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HomeMy WebLinkAboutSWP272867(5) 4205 148th Ave.N.E.Suite 200 � CORE Bellevue,Washington 98007 425.885.7877 Fax 425.885.7963 V DESIGN Cf RE%TC* ' �U►��irvu v�o�«I�� STORM DRAINAGE REPORT FOR MAPLEWOOD PARCEL ' RENTON, WASHINGTON ar W Q c-Q, � ' 33713 PREPARED BY: Gina R. Brooks, P.E. ' APPROVED BY: David E. Cayton, P.E. DATE: February, 2000 REVISED: June, 2000 b 'lY-vim fCORE PROJECT JNO.: 94168 ENGINEERING PLANNING SURVEYING MAPLEWOOD PARCEL TABLE OF CONTENTS tSection I: Project Overview Section II: Off-site Analysis ' Section III: Detention Analysis and Design Section IV: Conveyance System Analysis and Design ' SECTION I: PROJECT OVERVIEW: The Maplewood Parcel is a proposed single family development located on the south side ' of 128th Street SE between the Right of Ways for 148th and 152nd Avenue SE in Renton, Washington in the Section 14, Township 23 North, Range 5 East W.M. The property will be accessed from 128th Street SE. The property is approximately 62.73 ' acres sloping to the southwest at an average slope of 5%. Approximately 47.75 acres of the subject property will be developed. The remaining 14.98 acres will remain in its existing condition as preserved wetlands, buffers, and Native Growth Protection ' Easements. The surrounding land uses are residential housing and undeveloped land. See Figure 1 for vicinity map. ' The property is currently vacant. Ground cover consists of a combination of young trees and wetlands. A couple minor drainage swales consisting of wetlands traverse northeast to southwest across the property. ' Development of the site will include construction for 218 single family lots with associated roadway and utilities. A detention/water quality pond followed by a ' biofiltration swale will be installed at the southwest corner of the site. 1 t 405 ' 4 wal 900 9 10 � 11 ' R E N T ® N ig ' NE 4TH ST. SE f2BTH St. Li� BM P7. BM PT, TE 1852 2103 ' GREENWOOD S� CEMETERY 17 169 16 15 14 CEDAR 4f& MAPLEWOOD GOLF COURSE VICINITY MAP ' N 1" = 3000't 1 1 1 1 t SECTION II: OFFSITE ANALYSIS : Upstream Area ' The site receives runoff from 53.17 acres. ' The upstream drainage basin extends from the east property line east to 156' Avenue SE between SE 132nd Street and SE 128`h Street Another smaller area is also upstream of the site. This area is the west half of the 152nd Avenue SE right-of-way from SE 132nd Street ' south to the intersection of a proposed road (located 365 feet north of the southeast property corner). This tributary area described above is divided into two tributary areas based on the location of the arrival onsite. Tributary Area 1 arrives on the site in the form ' of sheet flow which is collected by the onsite conveyance system. Tributary Area 2 arrives on the site in the form of both sheet flow and concentrated ditch flow. Drainage from Tributary Area 2 flows directly into a onsite wetland. This corresponding wetland tdrainage is bypassed through the site. The site straddles another upstream tributary area which is near the west boundary of the ' site and adjacent to SE 128d' Street. This area sheet flows onto the site and is captured by the onsite drainage system. ' All drainage east of 152nd Avenue SE between SE 1360' Street and SE 132" Street is intercepted by a ditch that runs along 152"Avenue SE conveying drainage south and away from the proposed site. ' An upstream area on the north side of SE 128th Street is diverted from flowing onto the site through a series of culverts and ditches. The sormwater flows under SE 128th Street ' in a 30-inch concrete culvert to the northwest corner of the site and ultimately away from the proposed site. Onsite Area ' The majority of the site is currently young alder saplings. The site has a minor drainage swale traversing the site from the northeast to the southwest. The property is surrounded ' by unimproved Right of Way with the exception of the north property line. The Right of Ways currently are unimproved dirt roads. Small runnels have formed along the perimeter roads. Stormwater generally flows in a southwesterly direction over forested ' terrain. Where the flows reach the west perimeter dirt road, they generally run through puddles until a runnel directs them to the drainage Swale to the west. The flows from this drainage swale ultimately run back towards the southwest property corner. Where the ' flows reach the south perimeter road, they run through runnels to a section of cleared property which directs the flow toward a 30" culvert south of the site. ' Downstream Investigation ' The western swale and the on-site flows drain to a swale just south of the southwest property corner. The swale is broad with a shallow low-flow eroded channel. The channel seems to contain normal flows but is probably inundated during major storm ' events. However, there does not currently appear to be any erosion or capacity problems for the swale as a whole. This swale flows through a cleared and grassed area which does not appear to be maintained. The southern swale and other site runnels converge ' approximately 500 feet south of the property at a 30" culvert. This culvert directs the flows through the Plat of Briar Hills through a 30" CMP pipe at varying slopes of 0.6 to 3.8% (see Figure 3 for Downstream Drainage Map). There is one "off-line" detention ' pond approximately 1200 feet downstream which is thoroughly grassed and shows no sign of recent inundation. The 30" inch CMP ultimately drains to another"off-line" detention pond approximately 2200 feet downstream near the south end of Briar Hills. ' This detention pond shows evidence of recently detained flows filling up the bottom 2 feet of the pond(the pond has seven feet of available storage). This pond releases to a rip-rapped discharge at the top of a natural drainage ravine. The ravine eventually ' discharges to the Cedar River approximately one mile downstream of the subject property. ' The downstream flow path has no apparent signs of flooding or extensive erosion. 1 t 1 ! �O 7a 7M IflKl •1 iL I 1 1. 75 iAI WIN ! . •••• +•• +• 00 f _ •\� 1 IN ! + +''w H 0+1 4 -� "�1+ •-� • 1 -ter . \ . \ 1� .\ �_,`_ / t jag � 1 a +P' e ■ ■ . a C/� •1 y t. r 1.�■ w 1. �. t=. � \ O x 1 1 a ! L-LJI 1 - e � t IN It s It ° a \ t \ LLJ s-cz-sr ss J Z CV) c 0 w SECTION III: DETENTION ANALYSIS & DESIGN: A. Hydraulic Analysis Storm water runoff for the site was modeled using Waterworks hydrology software and the Santa Barbara Urban Hydrograph Methodology. A combination detention/water ' quality pond along with a biofiltration swale will be used for mitigation of the stormwater. ' The soil type on-site and upstream of the site is Alderwood (AgQ per the King County SCS Map. The soil type falls under hydrologic group C. ' The precipitation rates used for this analysis are as follows: *Water quality storm= 1/3(2-year, 24-hour storm) -a 0.67 in. ' •2-year, 24-hour storm 2.00 in. •5-year, 24-hour storm 2.60 in. ' *I 0-year, 24-hour storm 2.94 in. 925-year, 24-hour storm 3.46 in. •100-year, 24-hour storm-+ 3.95 in. Existing Conditions ' The existing conditions will consist of those portions of the site within the property boundaries that will be disturbed(47.75 acres) and some areas outside the property ' boundaries that will be improved with half street and/or full street improvements (0.95 acres). EXISTING SITE Total Area=48.70 acres CONDITIONS GROUND COVER AREA acre CN Second Growth Forest 48.70 81 Time of concentration See Site Plan exhibit on the following 68.12 min. pages (See Waterworks printouts for calculation wA IJ ��. Ir - • • r �paq Y AI r . ANi On NFM . - . • w�� IttsAm Val • • ' lot NX � u "all Its►,�►!� �� y, Ilk, IF411 Imp t in IRA WAN low • � w, ki i _Jaw �. 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Ur ` 27 em6 ► AgB MAPLEWOOD PARCEL 492.I PROJECT NO. 94168 No • • Wm ME all WON 14 Ab �_�►ate� rp ® � � w w s, e � , 1 6/12/00 11 : 35 :44 am Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT-NO. -94168____________________________________________________ BASIN SUMMARY BASIN ID: EX002 NAME: EX SITE 2 YR STORM 1 SBUH METHODOLOGY TOTAL AREA. . . . . . 48 . 70 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 00 inches AREA. . : 48 . 70 Acres 0 . 00 Acres 1 TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min ABSTRACTION COEFF: 0 . 20 1 TcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 TcReach - Shallow L: 630 . 00 ks : 5 . 00 s : 0 . 0300 1 TcReach - Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 PEAK RATE : 2 . 35 cfs VOL: 2 .45 Ac-ft TIME : 550 min 1 BASIN ID: EX005 NAME : EX SITE 5 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs 1 RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 60 inches AREA. . : 48 . 70 Acres 0 . 00 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min 1 ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 300 . 00 ns : 0 . 4000 p2yr: 2 . 00 s : 0 . 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 1 TcReach - Shallow L: 630 . 00 ks : 5 . 00 s : 0 . 0300 TcReach - Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 ' PEAK RATE : 4 . 56 cfs VOL: 4 . 12 Ac-ft TIME: 540 min BASIN ID: EXO10 NAME: EX SITE 10 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 94 inches AREA. . : 48 . 70 Acres 0 . 00 Acres 1 TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min ABSTRACTION COEFF : 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0- 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 TcReach - Shallow L: 630 . 00 ks : 5 . 00 s : 0 . 0300 TcReach -Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 1 TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 PEAK RATE : 5 . 98 cfs VOL: 5 . 14 Ac-ft TIME: 520 min 1 i 1 6/12/00 11 :35 :44 am Dodds Engineers, Incorporated page 2 ' MAPLEWOOD PARCEL PROJECT NO. 94168 --------------------------------------------------------------------- --------------------------------------------------------------------- ' BASIN SUMMARY ' BASIN ID: EX100 NAME : EX SITE 100 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 48 . 70 Acres 0 . 00 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min ' ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 ' TcReach - Shallow L: 630 . 00 ks : 5 . 00 s : 0 . 0300 TcReach - Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 TcReach Channel L: 840 . 00 kc . 17 . 00 s : 0 . 0250 PEAK RATE: 11 . 00 cfs VOL: 8 . 44 Ac-ft TIME: 490 min t t ' Open Space Portions of the open space (5.51 acres)within the property are captured by the storm ' drainage system and routed through detention. Since these areas will remain in their natural condition, these areas will be routed through the detention pond undetained. ' Listed below are the areas within specific tracts that are captured by the storm drainage system. See "Site Plan" exhibit in the previous pages. ' Tract Area acres A 2.61 C 0.16 ' D 0.03 E 0.04 F 1.66 ' J 1.01 ' OPEN SPACE Total Area= 5.51 acres GROUND COVER AREA acre CN ' 2nd Growth Forest 5.51 81 Time of concentration Assumed to be equal to the"Existing 68.12 min. Time of Concentration" 1 ' 6/12/00 1 : 18 :4 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT NO. 94168 BASIN SUMMARY BASIN ID: OPEN002 NAME : OPEN SPACE 2 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 5 . 51 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE . . . . : TYPE1A PERV IMP PRECIPITATION. . . . : 2 . 00 inches AREA. . : 5 . 51 Acres 0 . 00 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min ABSTRACTION COEFF : 0 . 20 ' TcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 TcReach - Shallow L: 630 . 00 ks : 5 . 00 s : 0 . 0300 ' TcReach - Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 PEAK RATE . 0 . 27 cfs VOL: 0 . 28 Ac-ft TIME: 550 min ' BASIN ID: OPEN005 NAME: OPEN SPACE 5 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 5 . 51 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 60 inches AREA. . : 5 . 51 Acres 0 . 00 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min ' ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 ' TcReach - Shallow L: 630 . 00 ks : 5 . 00 s : 0 . 0300 TcReach - Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 ' PEAK RATE : 0 . 52 cfs VOL: 0 . 47 Ac-ft TIME : 540 min BASIN ID: OPENO10 NAME: OPEN SPACE 10 YR STORM SBUH METHODOLOGY ' TOTAL AREA. . . . . . . : 5 . 51 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE . . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 2 . 94 inches AREA. . : 5 . 51 Acres 0 . 00 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min ABSTRACTION COEFF : 0 . 20 ' TcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 TcReach - Shallow L. 630 . 00 ks : 5 . 00 s : 0 . 0300 TcReach -Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 ' TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 PEAK RATE: 0 . 68 cfs VOL: 0 . 58 Ac-ft TIME : 520 min 1 6/12/00 1 : 18 :4 pm Dodds Engineers, Incorporated page 2 ' MAPLEWOOD PARCEL PROJECT NO. 94168 ' BASIN SUMMARY ' BASIN ID: OPEN100 NAME : OPEN SPACE 100 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 5 . 51 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPE1A PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 5 . 51 Acres 0 . 00 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min ' ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 . 4000 p2yr: 2 . 00 s : 0 . 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 ' TcReach - Shallow L: 630 . 00 ks : 5 . 00 s : 0 . 0300 TcReach - Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 TcReach - Channel L : 840 . 00 kc . 17 . 00 s : 0 . 0250 PEAK RATE: 1 . 24 cfs VOL: 0 . 95 Ac-ft TIME: 490 min 1 1 1 ' Offsite Tributary Area The site receives runoff from 53.17 acres as described previously There will be three different offsite areas delineated. One area sheet flows onto the site ' from the east (Offsite Tributary Area 1). This area includes a large area north of SE 132nd Street and east of 152°d Avenue SE. The area also includes the west half of 152' Avenue SE from SE 132' Street south to the intersection of a proposed road (located 365 ' feet north of the southeast property corner). This area will flow through the detention system undetained ' The other area is either intercepted by a ditch along the north side of SE 132°d Street upstream and east of 152' Avenue SE or sheet flows into a wetland onsite (Offsite Tributary Area 2). The concentrated flow from the ditch will be intercepted by a culvert ' and conveyed directly to the adjacent onsite wetland. This wetland will bypass the detention system. ' The site straddles the other offsite area which is near the west boundary of the site and adjacent to SE 128' Street (Offsite Tributary Area 3). This area sheet flows onto the site. This area will flow through the detention system undetained 1 OFFSITE TRIBUTARY Total Area= 10.63 acres ' AREA 1 GROUND COVER AREA acre CN 2nd Growth Forest 2.01 81 ' Pasture 0.86 85 Lawn/Landscaping Lawn/Landscaping 2.07 86 ' Gravel 4.39 89 Impervious 1.30 98 Existing Time of concentration See Existing Offsite Tributary Area 73.90 min. ' exhibit on the following pages (See Waterworks printouts for calculation Developed Time of See Developed Offsite Tributary Area 36.74 min. ' concentration exhibit on the following pages (See excel spreadsheet Dev. Time of Conc. For Trib. Area 1 for calculation ' Time of concentration to project (See Waterworks printouts for 29.83 min. property line (for conveyance calculation) calculations 1 1 ' 6/12/00 2 :29 : 51 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT NO. 94168 ' BASIN SUMMARY ' BASIN ID: EXOS1002 NAME: EX TRIB AREA 1 2 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 10 . 63 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPEIA DERV IMP PRECIPITATION. . . 2 . 00 inches AREA. . : 4 . 94 Acres 5 . 69 Acres TIME INTERVAL. . . . . 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 73 . 90 min 73 . 90 min ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 TcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 ' TcReach - Shallow L : 1405 . 00 ks : 5 . 00 s : 0 . 0160 TcReach - Channel L: 290 . 00 kc : 17 . 00 s : 0 . 0240 TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 ' impTcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 impTcReach - Shallow L: 1405 . 00 ks : 5 . 00 s : 0 . 0160 impTcReach - Channel L: 290 . 00 kc : 17 . 00 s : 0 . 0240 ' impTcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 PEAK RATE: 1 . 03 cfs VOL: 0 . 86 Ac-ft TIME: 510 min t BASIN ID: EXOS1005 NAME : EX TRIB AREA 1 5 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 2 . 60 inches AREA. . : 4 . 94 Acres 5 . 69 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 73 . 90 min 73 . 90 min ' ABSTRACTION COEFF: 0 .20 TcReach - Sheet L : 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 TcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 ' TcReach - Shallow L: 1405 . 00 ks : 5 . 00 s : 0 . 0160 TcReach - Channel L : 290 . 00 kc : 17 . 00 s : 0 . 0240 TcReach Channel L: 840 . 00 kc . 17 . 00 s : 0 . 0250 impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 ' impTcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 impTcReach - Shallow L: 1405 . 00 ks : 5 . 00 s : 0 . 0160 impTcReach - Channel L: 290 . 00 kc : 17 . 00 s : 0 . 0240 impTcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 PEAK RATE: 1 . 68 cfs VOL: 1 . 30 Ac-ft TIME: 490 min 6/.12/00 2 :29 : 51 pm Dodds Engineers, Incorporated page 2 ' MAPLEWOOD PARCEL PROJECT NO. 94168 --------------------------------------------------------------------- --------------------------------------------------------------------- ' BASIN SUMMARY ' BASIN ID: EXOS1010 NAME: EX TRIB AREA 1 10 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 2 . 94 inches AREA. . : 4 . 94 Acres 5 . 69 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 73 . 90 min 73 . 90 min ' ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 TcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 ' TcReach - Shallow L: 1405 . 00 ks : 5 . 00 s : 0 . 0160 TcReach - Channel L: 290 . 00 kc : 17 . 00 s : 0 . 0240 TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 ' impTcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 impTcReach - Shallow L: 1405 . 00 ks : 5 . 00 s : 0 . 0160 impTcReach - Channel L: 290 . 00 kc : 17 . 00 s : 0 . 0240 impTcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 PEAK RATE: 2 . 08 cfs VOL: 1 . 56 Ac-ft TIME : 490 min ' BASIN ID: EXOS1100 NAME : EX TRIB AREA 1 100 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . . 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 4 . 94 Acres 5 . 69 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . . 73 . 90 min 73 . 90 min ' ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 TcReach - Shallow L : 1050 . 00 ks : 11 . 00 s : 0 . 0410 ' TcReach - Shallow L: 1405 . 00 ks : 5 . 00 s : 0 . 0160 TcReach - Channel L: 290 . 00 kc : 17 . 00 s : 0 . 0240 TcReach Channel L: 840 . 00 kc . 17 . 00 s : 0 . 0250 impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 t impTcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 impTcReach - Shallow L: 1405 . 00 ks : 5 . 00 s : 0 . 0160 impTcReach - Channel L: 290 . 00 kc : 17 . 00 s : 0 . 0240 ' impTcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 PEAK RATE: 3 . 33 cfs VOL: 2 .36 Ac-ft TIME: 490 min DEV. TIME OF CONCENTRATION FOR TRIB. AREA 1 Sheet Flow: Tt= 0.42(nsL)" (Pz) (so) 0.4 where: Tt: travel time (min). ' ns: sheet flow Manning's Effective roughness coefficient(from Table 3.5.2C). L: flow length (ft). Pz: 2-year, 24-hour rainfall (in), (see Figure 3.5.1 C). so: slope of hydraulic grade line (land slope, ft/ft). Shallow Tt= L ' Concentrated Flow: 60ks(sp) where: Tt: travel time (min).. ' L: flow length (ft). ks: time of concentration velocity factor(ft/s), (see Table 3.5.2C). sA: slope of hydraulic grade line (land slope, ft/ft). Channel Flow: Tt= L 60kc(sa) 0.5 where: Tt: travel time (min). ' L: flow length (ft). kC: time of concentration velocity factor(ft/s), (see Table 3.5.2C). so: slope of hydraulic grade line (land slope, ft/ft). Fill in Values In Boxes: ' Sheet Flow: Segment#= 1 Tt= 21.97 min. ns = 0.15 ' L = 300 P2 = 2 sQ = 0.043 Shallow Segment#= 2 Tt= 7.86 min. t Concentrated Flow:. L = 1050 ks = 11 So= 0.041 t Segment#= 3 Tt= 0.59 min. ' L = 97 ks = 11 ' so = 0.062 Channel Flow: Segment# = 4 Tt= 0.20 min. ' L 145 ko= 42 ' so = 0.083 Segment#= 5 Tt= 2.02 min. ' L = 1066 kc = 42 So = 0.044 ' Segment#= 142 T,= 4.10 min. Lko= so = 0.018 To= 36.74 min. 1 6/12/00 3 : 9 : 58 pm Dodds Engineers, Incorporated page 1 --_----_MAPLEWOOD PARCEL 94168 PROJECT NO. 94168 BASIN SUMMARY 1 BASIN ID: DOS1002 NAME : DEV TRIB AREA 1 2 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . ° 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 00 inches AREA. . : 4 . 94 Acres 5 . 69 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 36 . 74 min 36 . 74 min ABSTRACTION COEFF: 0 . 20 PEAK RATE : 1 .43 cfs VOL: 0 . 86 Ac-ft TIME: 490 min BASIN ID: DOS1005 NAME : DEV TRIB AREA 1 5 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . e 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 60 inches AREA. . : 4 . 94 Acres 5 . 69 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 36 . 74 min 36 . 74 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE : 2 . 31 cfs VOL: 1 . 30 Ac-ft TIME: 490 min BASIN ID: DOS1010 NAME : DEV TRIB AREA 1 10 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA DERV IMP PRECIPITATION. . . . : 2 . 94 inches AREA. . : 4 . 94 Acres 5 . 69 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 36 . 74 min 36 . 74 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE : 2 . 83 cfs VOL: 1 . 56 Ac-ft TIME: 490 min BASIN ID: DOS1100 NAME : DEV TRIB AREA 1 100 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . .. TYPElA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 4 . 94 Acres 5 . 69 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 36 . 74 min 36 . 74 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE : 4 .45 cfs VOL: 2 .36 Ac-ft TIME: 4.90 min t 1 1 6/12/00 3 : 24 : 35 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT NO. 94168 --------------------------------------------------------------------- --------------------------------------------------------------------- ' BASIN SUMMARY 1 BASIN ID: TRIB1025 NAME: TRIB AREA 1 25 YR STORM -70 Peop LInE, SBUH METHODOLOGY TOTAL AREA. . . . . . . : 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . 3 .46 inches AREA. . : 4 . 94 Acres 5 . 69 Acres TIME INTERVAL. . . . . 10 . 00 min CN. . . . . 83 . 80 91 . 10 TC. . . . : 29 . 83 min 29 . 83 min 1 ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 TcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 impTcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 PEAK RATE : 3 . 90 cfs VOL: 1 . 97 Ac-ft TIME: 490 min BASIN ID: TRIB1100 NAME: TRIB AREA 1 100 YR STORM TO fZCP, LM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 10 . 63 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 4 . 94 Acres 5 . 69 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 1 TC. . . . . 29 . 83 min 29 . 83 min ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 TcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 ' impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 impTcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 PEAK RATE: 4 . 74 cfs VOL: 2 . 36 Ac-ft TIME: 490 min i 1 1 1 i 1 1 OFFSITE TRIBUTARY Total Area=33.54 acres ' AREA 2 GROUND COVER AREA acre CN 2nd Growth Forest 20.43 81 ' Pasture 5.40 85 Lawn/Landscaping Lawn/Landscaping 5.29 86 hn ervious 2.42 98 Time of concentration to project See Existing &Developed Offsite 77.58 min. property line (for conveyance Tributary Area exhibits on previous calculations) pages (See Waterworks printouts for ' calculation ' 6/12/00 3 :26 : 17 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT NO. 94168 --------------------------------------------------------------------- --------------------------------------------------------------------- ' BASIN SUMMARY ' BASIN ID: TRIB2025 NAME: TRIB AREA 2 25 YR STORM "1-0 PQpp LJry& SBUH METHODOLOGY TOTAL AREA. . . . . . . : 33 . 54 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 .46 inches AREA. . : 31 . 12 Acres 2 .42 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 82 . 50 98 . 00 TC. . . . : 77 . 57 min 77 . 57 min ' ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0260 TcReach - Shallow L: 1290 . 00 ks : 5 . 00 s : 0 . 0530 ' impTcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0260 impTcReach -- Shallow L: 1290 . 00 ks : 5 . 00 s : 0 . 0530 PEAK RATE : 6 . 50 cfs VOL: 5 .29 Ac-ft TIME : 490 min ' BASIN ID: TRID2100 NAME: TRIB AREA 2 100 YR STORM -TO eZOi� L4Y-C-, SBUH METHODOLOGY TOTAL AREA. . . . . . . : 33 . 54 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 31 . 12 Acres 2 .42 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 82 . 50 98 . 00 TC. . . . : 77 . 57 min 77 . 57 min ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0260 ' TcReach - Shallow L: 1290 . 00 ks : 5 . 00 s : 0 . 0530 impTcReach - Sheet L: 300 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0260 impTcReach Shallow L: 1290 . 00 ks : 5 . 00 s : 0 . 0530 PEAK RATE: 8 .24 cfs VOL: 6 .46 Ac-ft TIME: 490 min ' OFFSITE TRIBUTARY Total Area=9.00 acres AREA 3 ' GROUND COVER AREA acre CN 2'Growth Forest 7.66 81 Pasture 0.26 85 ' Compact Dirt 0.28 87 Impervious 0.80 98 Existing Time of concentration See Existing Offsite Tributary Area 30.50 min. ' exhibit on the previous pages (See excel spreadsheet Ex. Time of Conc. ' For Trib. Area 3 for calculation Developed Time of See Developed Offsite Tributary Area 26.48 min. concentration exhibit on the previous pages (See ' excel spreadsheet Dev. Time of Conc. For Trib. Area 3 for calculation Time of concentration to project (See Waterworks printouts for 15.91 min. t property line (for conveyance calculation) calculations 1 1 r EX. TIME OF CONCENTRATION FOR TRIB. AREA 3 ' Sheet Flow: Tt= 0.42(nsL)0.8 where: Tt: travel time (min). r ns: sheet flow Manning's Effective roughness coefficient (from Table 3.5.2C). L: flow length (ft). P2: 2-year, 24-hour rainfall (in), (see Figure 3.5.1C). ' so: slope of hydraulic grade line (land slope, ft/ft). Shallow Tt= L rConcentrated Flow: 60ks(s,) where: Tt: travel time(min). ' L: flow length (ft). ks: time of concentration velocity factor(ft/s), (see Table 3.5.2C). so: slope of hydraulic grade line (land slope, ft/ft). Channel Flow: Tt= L r60kc(sa) where: Tt: travel time(min). ' L: flow length (ft).kc: time of concentration velocity factor(ft/s), (see Table 3.5.2C). so: slope of hydraulic grade line (land slope, ft/ft). ' Fill in Values In Boxes: ' Sheet Flow: Segment#= 1 Tt= 2.04 min. ns = 0.011 ' L = 260 P2 = 2 So = 0.066 rSegment#= 2 Tt= 8.09 min. ns = 0.4 ' L= 40 P2= 2 So = 0.066 1 1 1 ' Shallow Segment#= 3 Tt= 5.78 min. Concentrated Flow: L = 410 kg = 5 ' so= 0.056 ' Channel Flow: Segment#= 4 Tt= 7.54 min. L = 1115 kc= 17 So= 0.021 Segment#= 5 Tt= 1.84 min. L= 290 kc= 17 So = 0.024 ' Segment#= 6 Tt= 5.21 min. L= 840 ' kc= 17 So = 0.025 ' Tc= 30.50 min. 1 6/12/00 2 :29 :41 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT NO. 94168 --------------------------------------------------------------------- --------------------------------------------------------------------- ' BASIN SUMMARY BASIN ID: EXOS3002 NAME : EX TRIB AREA 3 2 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 2 . 00 inches AREA. . : 8 . 20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . 81 . 30 98 . 00 TC. . . . : 30 . 50 min 30 . 50 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE : 0 . 79 cfs VOL: 0 . 54 Ac-ft TIME: 490 min BASIN ID: EXOS3005 NAME : EX TRIB AREA 3 5 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 2 . 60 inches AREA. . : 8 . 20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . . 30 . 50 min 30 . 50 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE: 1 .44 cfs VOL: 0 . 86 Ac-ft TIME : 490 min BASIN ID: EXOS3010 NAME : EX TRIB AREA 3 10 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 2 . 94 inches AREA. . : 8 . 20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . . 30 . 50 min 30 . 50 min ABSTRACTION COEFF: 0 .20 ' PEAK RATE : 1 . 85 cfs VOL: 1 . 06 Ac-ft TIME: 490 min BASIN ID: EXOS3100 NAME: EX TRIB AREA 3 100 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9. 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 8 . 20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . . 30 . 50 min 30 . 50 min ABSTRACTION COEFF: 0 . 20 PEAK RATE: 3 . 15 cfs VOL: 1 . 69 Ac-ft TIME: 490 min DES/. TIME OF CONCENTRATION FOR TRIB. AREA 3 Sheet Flow: Tt= 0.42(nsL)°& where: Tt: travel time (min). ns: sheet flow Manning's Effective roughness coefficient (from Table 3.5.2C). L: flow length (ft). P2: 2-year, 24-hour rainfall (in), (see Figure 3.5.1 C). so: slope of hydraulic grade line (land slope, ft/ft). Shallow Tt= L ' Concentrated Flow: 60ks(So) 0.5 ' where: Tt: travel time (min). L: flow length (ft). ks: time of concentration velocity factor(ftls), (see Table 3.5.2C). ' so: slope of hydraulic grade line (land slope, ft/ft). Channel Flow: Tt= L ' 60kc(so) 0-5 where: Tt: travel time (min). L: flow length (ft). kc: time of concentration velocity factor(ft/s), (see Table 3.5.2C). so: slope of hydraulic grade line (land slope, ft/ft). ' Fill in Values In Boxes: ' Sheet Flow: Segment#= 1 Tt= 2.04 min. ns = 0.011 ' L = 260 P2= 2 So 0.066 Segment#= 2 Tt= 6.09 min. ns= 0.4 ' L = 40 P2= 2 ' So= 0.066 i i 1 ' Shallow Segment#= 3 Tt= 5.78 min. Concentrated Flow: L= 410 k$= 5 So= 0.056 ' Channel Flow: Segment#= 4 Tt= 0.70 min. L = 260 kc= 42 1 So = 0.022 Segment#= 5 Tt= 5.78 min. ' L= 1527 kC= 42 So = 0.011 ' Segment#= 6 Tt= 4.10 min. L = 1386 1 kC= 42 So = 0.018 1 TC= 26.48 min. 1 i 1 1 1 1 1 1 1 ' 6/12/00 4 : 35 :47 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT NO. 94168 ' BASIN SUMMARY ' BASIN ID: DOS3002 NAME : DEV TRIB AREA 3 2 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 00 inches AREA. . : 8 .20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . : 26 . 48 min 26 .48 min ABSTRACTION COEFF: 0 .20 PEAK RATE: 0 . 83 cfs VOL: 0 . 54 Ac-ft TIME: 490 min ' BASIN ID: DOS3005 NAME : DEV TRIB AREA 3 5 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs t RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 60 inches AREA. . : 8 .20 Acres 0 . 80 Acres TIME INTERVAL. . . . . 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . : 26 . 48 min 26 .48 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE: 1 . 51 cfs VOL: 0 . 86 Ac-ft TIME : 490 min ' BASIN ID: DOS3010 NAME : DEV TRIB AREA 3 10 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . 2 . 94 inches AREA. . : 8 .20 Acres 0 . 80 Acres TIME INTERVAL. . . . . 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . : 26 . 48 min 26 .48 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE : 1 . 93 cfs VOL: 1 . 06 Ac-ft TIME : 490 min ' BASIN ID: DOS3100 NAME: DEV TRIB AREA 3 100 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE . . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 8 . 20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . . 26 .48 min 26 . 48 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE: 3 . 28 cfs VOL: 1 . 69 Ac-ft TIME : 490 min 6/12/00 3 :24 : 12 pm Dodds Engineers, Incorporated page 1 ' -PROJECT NO. 94168 MAPLEWOOD PARCEL --------------------------------------------------------------------- --------------------------------------------------------------------- ' BASIN SUMMARY BASIN ID: TRIB3025 NAME: TRIB AREA 3 25 YR STORM -"v FTzP une ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 3 .46 inches AREA. . : 8 .20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . : 15 . 91 min 15 . 91 min ' ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 260 . 00 ns : 0 . 0110 p2yr: 2 . 00 s : 0 . 0660 TcReach Sheet L: 40 . 00 ns : 0 . 4000 p2yr: 2 . 00 s : 0 . 0660 TcReach - Shallow L: 410 . 00 ks : 5 . 00 s : 0 . 0560 ' impTcReach - Sheet L: 260 . 00 ns : 0 . 0110 p2yr: 2 . 00 s : 0 . 0660 impTcReach - Sheet L: 40 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0660 impTcReach - Shallow L: 410 . 00 ks : 5 . 00 s : 0 . 0560 ' PEAK RATE: 3 . 04 cfs VOL: 1 . 38 Ac-ft TIME: 480 min BASIN ID: TRIB3100 NAME: TRIB AREA 3 100 YR STORM TO f'ZOP. UY)e, SBUH METHODOLOGY ' TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 8 . 20 Acres 0 . 80 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 .30 98 . 00 TC. . . . : 15 . 91 min 15 . 91 min ABSTRACTION COEFF: 0 . 20 t TcReach - Sheet L: 260 . 00 ns : 0 . 0110 p2yr: 2 . 00 s : 0 . 0660 TcReach - Sheet L: 40 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0660 TcReach - Shallow L: 410 . 00 ks : 5 . 00 s : 0 . 0560 impTcReach - Sheet L: 260 . 00 ns : 0 . 0110 p2yr: 2 . 00 s : 0 . 0660 ' impTcReach - Sheet L: 40 . 00 ns : 0 . 4000 p2yr: 2 . 00 s : 0 . 0660 impTcReach - Shallow L: 410 . 00 ks : 5 . 00 s : 0 . 0560 PEAK RATE: 3 . 83 cfs VOL: 1 . 69 Ac-ft TIME : 480 min 1 1 1 ' Developed Conditions The amount of new impervious area for the developed site within the property boundaries ' was derived from Table 3.5.2B of the 1990 King County Surface Water Design Manual (KCSWDM). ' According to Table 3.5.2B of the 1990 KCSWDM, the percentage of impervious area for the site is 46.3 % for 218 proposed lots on 47.75 acres=4.57 DU/AC. ' The developed conditions will consist of those portions of the site within the property boundaries that will be disturbed (47.75 acres) and some areas outside the property boundaries that will be improved with half street and/or full street improvements (0.95 acres). The areas outside the property boundaries will be consider completely impervious. tDEVELOPED CONDITIONS Total Area=48.70 acres GROUND COVER AREA acre CN ' Lawn/Landscaping Lawn/Landscaping 25.64 86 Impervious (46.3%*47.75 ac+ 23.06 98 0.95 ac ' Time of concentration See Site Plan exhibit on the previous 29.53 min. pages (See Waterworks printouts for calculation 1 1 1 1 1 6/12/00 3 :40 :42 pm Dodds Engineers, Incorporated page 1 ' PROJECT NO. 94168 MAPLEWOOD PARCEL. --------------------------------------------------------------------- --------------------------------------------------------------------- ' BASIN SUMMARY BASIN ID: DEV002 NAME : DEV SITE 2 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE . . . . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 2 . 00 inches AREA. . : 25 . 64 Acres 23 . 06 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 29 . 53 min 29 . 53 min ABSTRACTION COEFF: 0 .20 ' TcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 TcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 TcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 TcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 impTcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 .3300 impTcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 ' impTcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 impTcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 PEAK RATE: 10 . 02 cfs VOL: 5 .22 Ac-ft TIME: 490 min ' BASIN ID: DEV005 NAME: DEV SITE 5 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 2 . 60 inches AREA. . : 25 . 64 Acres 23 . 06 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 - TC. . . . : 29 . 53 min 29 . 53 min ABSTRACTION COEFF: 0 .20 TcReach Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 TcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 ' TcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 TcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 impTcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 impTcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 impTcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 impTcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 PEAK RATE: 14 .47 cfs VOL: 7 . 39 Ac-ft TIME : 480 min ' 6/12/00 3 :40 :42 pm Dodds Engineers, Incorporated page 2 MAPLEWOOD PARCEL PROJECT NO. 94168 ----------------------------------------- BASIN SUMMARY ' BASIN ID: DEVO10 NAME : DEV SITE 10 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 2 . 94 inches AREA. . : 25 . 64 Acres 23 . 06 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 29 . 53 min 29 . 53 min ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 TcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 ' TcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 TcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 impTcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 impTcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 impTcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 impTcReach Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 PEAK RATE : 17 . 09 cfs VOL: 8 . 65 Ac-ft TIME : 480 min ' BASIN ID: DEV025 NAME: DEV SITE 25 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA DERV IMP PRECIPITATION. . . . : 3 .46 inches AREA. . : 25 . 64 Acres 23 . 06 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 29 . 53 min 29 . 53 min ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 .3300 ' TcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 TcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 TcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 impTcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 impTcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 impTcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 impTcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 PEAK RATE : 21 . 17 cfs VOL: 10 . 61 Ac-ft TIME : 480 min 1 ' 6/12/00 3 :40 :42 pm Dodds Engineers, Incorporated page 3 MAPLEWOOD PARCEL PROJECT NO. 94168 BASIN SUMMARY====_______________________ ' BASIN ID: DEV100 NAME: DEV SITE 100 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 25 . 64 Acres 23 . 06 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 29 . 53 min 29 . 53 min ' ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 .3300 TcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 ' TcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 TcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 impTcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 impTcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 impTcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 impTcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 PEAK RATE : 25 . 07 cfs VOL: 12 . 48 Ac-ft TIME: 480 min t t t ' B. Water Quality Calculations A combination of dead storage in the pond along with a biofiltration swale will be used ' for mitigation of the stormwater to meet Special Requirement#5 and Core Requirement #3 of the 1990 King County Surface Water Design Manual. DEAD STORAGE ' According to the 1990 King County Surface Water Design Manual,the required volume for dead storage of the ponds shall be equal to the water quality storm in the developed condition. The water quality storm is defined as a storm having a precipitation equal to 1/3 of the 2-year precipitation. The required surface area for the dead storage of the ponds shall be equal to 1% of the impervious surface area tributary to the pond. t The areas considered for treatment are those areas tributary to the detention pond. These areas include the developed site along with any open space and tributary area captured by the storm drainage system conveying drainage to the pond. For each area considered for treatment, 6-month storms were calculated. The areas were summed to arrive at a required volume for water quality. See WaterWorks hydrograph ' summary printout in Section IRC. Hydrograph 13 is the sum of the 6-month storm events of the developed site plus the open space plus the tributary areas(1 &3). See basin summary printouts on the following pages. ' The dead storage required for the pond is 51,440 CF. Refer to the volume calculations spreadsheet on the following pages. Dead storage will be accomplished from elevation ' 391 to elevation 394. The dead storage provided is 95,775 CF which is more than the required. The required dead storage surface area is equal to 1%*(23.06+ 0.00 + 5.69+ ' 0.80) AC= 12,872 SF. At elevation 394,the surface area is equal to 35,967 SF which exceeds the minimum. 1 ' 6/12/00 4 : 36 : 15 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT NO. 94168 ' BASIN SUMMARY ' BASIN ID: DEV6MO NAME : DEV SITE 6 MONTH STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 0 . 67 inches AREA. . : 25 . 64 Acres 23 . 06 Acres TIME INTERVAL. . . . . 10 . 00 min CN. . . . . 86 . 00 98 . 00 TC. . . . : 29 . 53 min 29 . 53 min t ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 TcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 ' TcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 TcReach - Channel L: 2767 . 00 kc :42 . 00 s : 0 . 0340 impTcReach - Sheet L: 30 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 3300 t impTcReach - Sheet L: 100 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0050 impTcReach - Channel L: 235 . 00 kc :42 . 00 s : 0 . 0420 impTcReach - Channel L:2767 . 00 kc :42 . 00 s : 0 . 0340 PEAK RATE: 1 . 86 cfs VOL: 1 . 04 Ac-ft TIME: 480 min BASIN ID: DOS10006 NAME : DEV TRIB AREA 1 6 MONTH STORM SBUH METHODOLOGY ' TOTAL AREA. . . . . . . : 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 0 . 67 inches AREA. . : 4 . 94 Acres 5 . 69 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 36 . 74 min 36 . 74 min ABSTRACTION COEFF. 0 . 20 PEAK RATE: 0 . 07 cfs VOL: 0 . 09 Ac-ft TIME: 960 min ' BASIN ID: DOS30006 NAME : DEV TRIB AREA 3 6 MONTH STORM SBUH METHODOLOGY ' TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 0 . 67 inches AREA. . : 8 . 20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 .30 98 . 00 ' TC. . . . : 26 .48 min 26 .48 min ABSTRACTION COEFF: 0 . 20 PEAK RATE: 0 . 07 cfs VOL: 0 . 04 Ac-ft TIME: 480 min 1 ' 6/12/00 4 :36 : 15 pm Dodds Engineers, Incorporated page 2 MAPLEWOOD PARCEL PROJECT NO. 94168 --------------------------------------------------------------------- --------------------------------------------------------------------- BASIN SUMMARY t BASIN ID: OPEN6MO NAME : OPEN SPACE 6 MO STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 5 . 51 Acres BASEFLOWS : 0 . 00 cfs ' RAINFALL TYPE . . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 0 . 67 inches AREA. . : 5 . 51 Acres 0 . 00 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 68 . 12 min 0 . 00 min ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 . 4000 p2yr: 2 . 00 s : 0 . 0570 TcReach - Shallow L: 250 . 00 ks : 5 . 00 s : 0 . 0560 ' TcReach - Shallow L: 630 . 00 ks : 5 . 00 s : 0 . 0300 TcReach - Channel L: 670 . 00 kc : 17 . 00 s : 0 . 0240 TcReach - Channel L: 840 . 00 kc : 17 . 00 s : 0 . 0250 ' PEAK RATE: 0 . 01 cfs VOL: 0 . 01 Ac-ft TIME: 1330 min 1 t BIOFILTRATION SWALE According to the 1990 King County Surface Water Design Manual, the required flow for design of a biofiltration swale shall be equal to the 2-year outflow from the detention pond. The required bottom width of a 200' biofiltration swale was calculated by using Manning's Equation with an assumed depth of flow and 2-year outflow from the detention/water quality pond. The required flow for the biofiltration swale is 3.08 cfs. The 100-year outflow is equal to ' 18.70 cfs. The required bottom width of a 200' biofiltration swale was calculated by using ' Manning's Equation. According to the spreadsheet on the following pages, the biofiltration swale was designed with wetland vegetation with a depth of 8 inches, an n value equal to 0.35 and a slope of 0.02. For a 200' Swale, the required bottom width is 9.35 feet. The calculated velocity is 0.41 fps which is less than the required 1.5 fps limit. The swale will be designed with a 12.5-foot bottom which exceeds the minimum. The swale was checked for conveyance capacity based on the actual design slope of 0.005, true n value equal to 0.035 and a bottom width equal to 12.5 feet. The flow depth ' required to carry the 100-year outflow is between 0.64 feet which is less than the design flow depth of 8 inches. The velocity of the 100-year outflow is between 2.03 fps which is less than the required 5 fps limit. 1 ........................................................ ............................................................ � mm�TT N�7 ��T�A T ��+ . : L S. is TT 11.:..:ly: .x.:Yv: �Lli: V ........:..:.:.:.:.:.:..:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:.:...........:.......... ' .... .......::.................. .......:.... BaT J.. IZ T I I.... ........................ .. ............ SWALE GEOMETRY JOB NAME: MAPLEWOOD PARCEL BOTTOM SLOPE = 0.0200 JOB#: 94168 ' SIDE SLOPE (Z:1)= 3.00 OPERATOR: G.R. BROOKS MANNING'S n= 0.350 DATE: 6/13/00 DESIGN FLOW DEPTH ' WATER QUALITY SWALE BIOFILTRATION SWALE 3 INCHES 4 INCHES 8 INCHES (NATURAL GRASS) WETLAND VEGETATIO BOTTOM DESIGN FLOW DESIGN FLOW DESIGN FLOW WIDTH FLOW VELOCITY FLOW VELOCITY FLOW VELOCITY ' (FEET) (CFS) (FPS) (CFS) (FPS) (CFS) (FPS) 0.00 0.03 0.15 0.06 0.18 0.37 0.28 0.50 0.05 0.17 0.10 0.20 0.50 0.30 ' 1.00 0.08 0.18 0.14 0.22 0.64 0.32 1.50 0.11 0.19 0.19 0.23 0.77 0.33 2.00 0.14 0.20 0.23 0.23 0.91 0.34 ' 2.50 0.17 0.21 0.28 0.24 1.06 0.35 3.00 0.20 0.21 0.33 0.25 1.20 0.36 ' 3.50 0.23 0.21 0.37 0.25 1.34 0.37 4.00 0.25 0.21 0.42 0.25 1.49 0.37 4.50 0.28 0.22 0.47 0.26 1.64 0.38 ' 5.00 0.31 0.22 0.52 0.26 1.78 0.38 5.50 0.34 0.22 0.56 0.26 1.93 0.39 t 6.00 0.37 0.22 0.61 0.26 2.08 0.39 6.50 0.40 0.22 0.66 0.26 2.23 0.39 7.00 0.43 0.22 0.71 0.27 2.38 0.40 ' 7.50 0.46 0.22 0.76 0.27 2.53 0.40 8.00 0.49 0.22 0.80 0.27 2.68 0.40 8.50 0.52 0.23 0.85 0.27 2.83 0.40 9.00 0.55 0.23 0.90 0.27 2.98 0.41 2.0 0.57 0.23 0.93 0.27 QA1 9.50 0.58 0.23 0.95 0.27 3.13 0.41 ' 10.50 0.64 0.23 1.04 0.27 3.43 0.41 11.50 0.70 0.23 1.14 0.27 3.74 0.42 ' 13.00 0.79 0.23 1.28 0.28 4.19 0.42 1 T: n N T ST D W LE SWALE DATA: ' BOTTOM WIDTH (FT) = 12.50 JOB NAME: MAPLEWOOD PARCEL LEFT SIDE SLOPE (L:1) 3.00 JOB #: 94168 ' RIGHT SIDE SLOPE (R:l 3.00 OPERATOR: G.R. BROOKS BOTTOM SLOPE (FT/FT 0.0050 DATE: 1/28/00 MANNING'S n= 0.035 ' FLOW FLOW WETTED HYDRAULIC SWALE FLOW DEPTH AREA PERIMETER RADIUS CAPACITY VELOCITY (FEET) (SQ FT) (FEET) (FEET) (CFS) (FPS) ' 0.00 0.0000 0.0000 0.0000 0.000 0.000 0.05 0.6325 12.8162 0.0494 0.255 0.404 0.10 1.2800 13.1325 0.0975 0.814 0.636 0.15 1.9425 13.4487 0.1444 1.605 0.826 0.20 2.6200 13.7649 0.1903 2.603 0.993 ' 0.25 3.3125 14.0811 0.2352 3.790 1.144 0.30 4.0200 14.3974 0.2792 5.156 1.283 ' 0.35 4.7425 14.7136 0.3223 6.693 1.411 0.40 5.4800 15.0298 0.3646 8.397 1.532 0.45 6.2325 15.3460 0.4061 10.261 1.646 0.50 7.0000 15.6623 0.4469 12.285 1.755 0.55 7.7825 15.9785 0.4871 14.464 1.858 0.60 8.5800 16.2947 0.5266 16.796 1.958 Q fi4 9.2288 16.5477 0.5577 18,772 2.034 0.65 9.3925 16.6110 0.5654 19.282 2.053 ' 0.71 10.3873 16.9904 0.6114 22.463 2.163 0.75 11.0625 17.2434 0.6415 24.704 2.233 0.80 11.9200 17.5596 0.6788 27.641 2.319 1 ' C. Detention Calculations ' All site drainage will be collected in a roadway drainage system with roof drains connected directly to the system. Some of the existing offsite tributary areas and open space will be captured and routed through the detention pond. ' The detention system will be sized using the detention criteria specified in the Determination of Non-Significance (Mitigated), Mitigation Measures Item 2. The ' stormwater release rate for the developed site shall be limited to 50% of the existing 2 year storm with a safety factor of 10% applied to the detention volume and 100% of the existing 5, 10 and 100 year storms with a safety factor of 30% applied to the detention ' volume. The developed 2-year, 5-year, 10-year, and 100-year, 24-hour storms were routed through ' the pond to confirm adequate sizing. The pond to be constructed in the field was reduced by 1/1.10 from EL 394 to EL 396 and reduced by 1/1.30 from EL 396 to EL 400 for calculation of the required pond volume. See pond volume calculations in Section lI113 of ' this report. See results on the following pages. Hydrographs were generated and are as specified below: ' Hydrograph Storm Peak Runoff Rate cfs ' 1 50% existing site 2-year, 24-hour storm+open 3.09 space 2-year, 24-hour storm+offsite trib. area 1 2-year, 24-hour storm + offsite trib. area 3 ' 2 existing site 5-year, 24-hour storm+open space 7.98 5-year, 24-hour storm+offsite trib. area 1 5-year, 24-hour storm+offsite trib. area 3 5-year, 24- ' hour storm 3 existing site 10-year, 24-hour storm+open space 10.49 10-year, 24-hour storm+ offsite trib. area 1 10- ' year, 24-hour storm+offsite trib. area 3 10-year, 24-hour storm 4 existing site 100-year, 24-hour storm+open 18.73 ' space 100-year, 24-hour storm+ offsite trib. area 1 100-year, 24-hour storm+offsite trib. area 3 1 00- ear, 24-hour storm ' 5 . developed site 2-year, 24-hour storm+open 12.51 space 2-year, 24-hour storm+offsite trib. area 1 2-year, 24-hour storm+offsite trib. area 3 2-year, ' 24-hour storm 6 developed site 5-year, 24-hour storm+ open 18.75 ' space 5-year, 24-hour storm+offsite trib. area 1 5-year, 24-hour storm +offsite trib. area 3 5-year, 24-hour storm ' Hydrograph Storm Peak Runoff Rate cfs ' 7 developed site 10-year, 24-hour storm+ open 22.45 space 10-year, 24-hour storm+ offsite trib. area 1 10-year, 24-hour storm+ offsite trib. area 3 10- ' ear, 24-hour storm 8 developed site 100-year,24-hour storm+ open 33.86 space 100-year, 24-hour storm + offsite trio. area ' 1 100-year, 24-hour storm+ offsite trib. area 3 100- ear,24-hour storm ' 9 2-year,24-hour outflow out of pond 3.09 10 5-year, 24-hour outflow out of pond 6.77 11 10- ear,24-hour outflow out of pond 9.15 ' 12 100- ear, 24-hour outflow out of p2nd 18.68 13 developed site 6-month,24-hour storm+ open 1.99 space 6-month, 24-hour storm+ offsite trib. area (51,440 CF) ' 1 6-month,24-hour storm+ offsite trib. area 3 6- month, 24-hour storm 1 t CALCULATED POND VOLUME CALCULATIONS ' DEI# 94168 PROJECT NAME:MAPLEWOOD LEVATION INCREMENTAL TOTAL LIVE VOLUME VOLUME VOLUME SF CF CF CF 391.0 28061 r ;,''II :' 0 �y � e 1 11,10 ,,t �� I � r 29,589 dx � a`;� v`��r±r A+ 1 d�p� 7t ' 392.0 31117 'b "r '," 29,589 67,413 �,�`{G�'�-`'.'�ti''r°�,�F�� �,' r 1'�u"Y���� •1 394.0 36296 ji' !. ���;fir �'w,�� 97,002 .i j:�9a%jEy t dtt�F i;i ;h% rdt- r O 394.0 32697 97,002 0 Surface Areas e ara. •':'.+s dry d;:w �. r�, `. k yT.: .,%. ,. r �. � < � � : • � m,� 70,515 � ��.�° ��u' Decreased by 1/1.10 396.0 37818 ,�� �k. +< 167,517 pp 70,515 a.� j,�'� 396.0 32000 167,517 70,515 Surface Areas f � k 68,432 Decreased by 1/1.30 398.0 36432 235,949 1 j,'i• rc i.. {% •'1:,I ,Aax`;r t '.'(', 7711:LA %, f •%'V �.'w' !� 400.0 41122 `"�.. 313,503 216,501 ­J 1 1 i 1 1 1 POND TO BE CONSTRUCTED VOLUME CALCULATIONS 1 DEI 4 94168 PROJECT NAME: MAPLEWOOD 1 LEVATION INCREMENTAL TOTAL LIVE VOLUME VOLUME VOLUME SF CF CF CF 391 0 27602 2,,.'� y x r �� '' �� 0 .�.,,,arw� ,�,.," ,1 I IV It",,x5i 29,137 " 392.0 30671 ° ' 'f" � �','"' `.'" 29,137 iR ;�,: 7 ""If �6t a i,,P! 394.0 35 967 t ,� wh � syg 95,775 0 a 77o 567 n. r. ,;•r. r v' hog n aM,:r1� 396.0 41600 � 173,342 77,567 , � u,� �it rg a rx m;,��v� a a,rw � �3s �. ar,;a,✓h w �„`tT 88,961 ,wu_., �tA�� ` < a 1 398.0 47361 - 262,303 166,528 � m�r�`�r��,ea' ,�'+'>s�kf��`�a�3rr�g 3wv,° � R f"✓s�;;Y`i�� ^t''' a� � ` 100,819 �'_ ' � �. t ;,,� . s,.<�.` 400.0 53458 363,122 267,347 1 V e o� �J 1 1 1 1 1 1 8/9/00 2 : 24 : 55 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT NO. 94168 Revised 8/9/00 --------------------------------------------------------------------- --------------------------------------------------------------------- ' HYDROGRAPH SUMMARY 1 PEAK TIME VOLUME HYD RUNOFF OF OF Contrib NUM RATE PEAK HYDRO Area cfs min. cf\AcFt Acres --------------------------------------------- --------------------------------------------- ' 1 3 . 085 540 126406 cf 73 . 84 2 7 . 976 490 293685 cf 73 . 84 3 10 .487 490 363460 cf 73 . 84 4 18 . 728 490 585580 cf 73 . 84 5 12 . 505 490 300517 cf 73 . 84 6 18 . 745 490 436156 cf 73 . 84 ' 7 22 .445 490 516065 cf 73 . 84 8 33 . 861 490 761736 cf 73 . 84 9 3 . 085 1000 300553 cf 73 . 84 10 6 . 767 700 436334 cf 73 . 84 11 9 . 154 650 516152 cf 73 . 84 12 18 . 680 570 761910 cf 73 . 84 13 1 . 988 490 51440 cf 73 . 84 1 ' 8/9/00 2 : 24 : 55 pm Dodds Engineers, Incorporated page 2 MAPLEWOOD PARCEL PROJECT NO. 94168 Revised 8/9/00 STAGE STORAGE TABLE ' CUSTOM STORAGE ID No. POND Description: CALCULATED POND SIZE STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> ' (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --AC-Ft- (ft) ---cf--- --Ac-Ft- 394.00 0.0000 0.0000 395.60 56412 1.2950 397.20 111574 2.5614 398.80 169969 3.9019 ' 394.10 3526 0.0809 395.70 59938 1.3760 397.30 114996 2.6399 398.90 173846 3.9910 394.20 7052 0.1619 395.80 63464 1.4569 397.40 118417 2.7185 399.00 177724 4.0800 394.30 10577 0.2428 395.90 66989 1.5379 397.50 121839 2.7970 399.10 181602 4.1690 394.40 14103 0.3238 396.00 70515 1.6188 397.60 125261 2.8756 399.20 185479 4.2580 394.50 17629 0.4047 396.10 73937 1.6974 397.70 128682 2.9541 399.30 189357 4.3470 394.60 21155 0.4856 396.20 77358 1.7759 397.80 132104 3.0327 399.40 193235 4.4361 394.70 24680 0.5666 396.30 10780 1.8544 397.90 135525 3.1112 399.50 197113 4.5251 394.80 28206 0.6475 396.40 84201 1.9330 398.00 138947 3.1898 399.60 200990 4.6141 394.90 31732 0.7285 396.50 87623 2.0115 398.10 142825 3.2788 399.70 204868 4.7031 395.00 35258 0.8094 396.60 91045 2.0901 398.20 146702 3.3678 399.80 208746 4.7921 ' 395.10 38783 0.8903 396.70 94466 2.1686 398.30 150580 3.4568 399.90 212623 4.8812 395.20 42309 0.9713 396.80 97888 2.2472 398.40 154458 3.5459 400.00 216501 4.9702 395.30 45835 1.0522 396.90 101309 2.3257 398.50 158336 3.6349 395.40 49361 1.1332 397.00 104731 2.4043 398.60 162213 3.7239 395.50 52886 1.2141 397.10 108153 2.4828 398.70 166091 3.8129 ' 8/9/00 2 :24 : 55 pm Dodds Engineers, Incorporated page 3 MAPLEWOOD PARCEL PROJECT NO. 94168 Revised 8/9/00 STAGE STORAGE TABLE ' CUSTOM STORAGE ID No. PONDREAL Description: REAL POND SIZE STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> ' -(ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --AC-Ft- (ft) ---cf--- --Ac-Ft- 394.00 0.0000 0.0000 396.80 113803 2.6126 399.60 248193 5.6977 402.40 389608 8.9442 ' 394.10 3904 0.0896 396.90 118268 2.7151 399.70 253243 5.8137 402.50 394659 9.0601 394.20 7808 0.1793 397.00 122733 2.8176 399.80 258294 5.9296 402.60 399709 9.1761 394.30 11712 0.2689 397.10 127198 2.9201 399.90 263344 6.0456 402.70 404760 9.2920 394.40 15616 0.3585 397.20 131663 3.0226 400.00 268395 6.1615 402.80 409810 9.4080 394.50 19521 0.4481 397.30 136128 3.1251 400.10 273446 6.2774 402.90 414861 9.5239 394.60 23425 0.5378 397.40 140593 3.2276 400.20 278496 6.3934 403.00 419912 9.6398 394.70 27329 0.6274 397.50 145059 3.3301 400.30 283547 6.5093 403.10 424962 9.7558 394.80 31233 0.7170 397.60 149524 3.4326 400.40 288597 6.6253 403.20 430013 9.8717 394.90 35137 0.8066 397.70 153989 3.5351 400.50 293648 6.7412 403.30 435063 9.9877 395.00 39041 0.8963 397.80 158454 3.6376 400.60 296698 6.8572 403.40 440114 10.104 ' 395.10 42945 0.9859 397.90 162919 3.7401 400.70 303749 6.9731 403.50 445164 10.220 395.20 46849 1.0755 398.00 167384 3.8426 400.80 308799 7.0891 403.60 450215 10.336 395.30 50753 1.1651 398.10 172435 3.9586 400.90 313850 7.2050 403.70 455265 10.451 395.40 54657 1.2548 398.20 177485 4.0745 401.00 318901 7.3209 403.80 460316 10.567 395.50 58562 1.3444 398.30 182536 4.1904 401.10 323951 7.4369 403.90 465366 10.683 395.60 62466 1.4340 398.40 187586 4.3064 401.20 329002 7.5528 404.00 470417 10.799 395.70 66370 1.5236 398.50 192637 4.4223 401.30 334052 7.6688 404.10 475468 10.915 ' 395.80 70274 1.6133 398.60 197687 4.5383 401.40 339103 7.7847 404.20 480518 11.031 395.90 74178 1.7029 398.70 202738 4.6542 401.50 344153 7.9007 404.30 485569 11.147 396.00 78082 1.7925 398.80 207788 4.7702 401.60 349204 8.0166 404.40 490619 11.263 ' 396.10 82547 1.8950 398.90 212839 4.8861 401.70 354254 8.1326 404.50 495670 11.379 396.20 87012 1.9975 399.00 217890 5.0021 401.80 359305 8.2485 404.60 500720 11.495 396.30 91477 2.1000 399.10 222940 5.1180 401.90 364355 8.3645 404.70 505771 11.611 ' 396.40 95942 2.2025 399.20 227991 5.2339 402.00 369406 8.4804 404.80 510821 11.727 396.50 100408 2.3050 399.30 233041 5.3499 402.10 374457 8.5963 404.90 515872 11.843 396.60 104873 2.4075 399.40 238092 5.4658 402.20 379507 8.7123 405.00 520922 11.959 396.70 109338 2.5100 399.50 243142 5.5818 402.30 384558 8.8282 1 8/9/00 2 :24 : 55 pm Dodds Engineers, Incorporated page 4 MAPLEWOOD PARCEL PROJECT NO. 94168 Revised 8/9/00 STAGE DISCHARGE TABLE ' COMBINATION DISCHARGE ID No. COMBO Description: COMBO Structure : ORIFICE Structure : Structure : NOTCH Structure : Structure : STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> _(ft)=====cfa (ft)=====cfa (ft)=====cfs (ft)=====cfa=====________ 393.85 0.0000 395.40 2.0952 397.00 2.9869 398.60 12.711 393.90 0.3763 395.50 2.1617 397.10 3.0339 398.70 13.617 394.00 0.6518 395.60 2.2263 397.20 3.0802 398.80 14.681 394.10 0.8415 395.70 2.2890 397.30 3.1969 398.90 15.688 394.20 0.9956 395.80 2.3501 397.40 3.5376 399.00 16.708 ' 394.30 1.1289 395.90 2.4096 397.50 3.9989 399.10 17.737 394.40 1.2481 396.00 2.4676 397.60 4.5482 399.20 18.775 394.50 1.3568 396.10 2.5244 397.70 5.1684 399.30 19.819 ' 394.60 1.4575 396.20 2.5799 397.80 5.8484 399.40 20.868 394.70 1.5516 396.30 2.6342 397.90 6.5799 399.50 21.919 394.80 1.6403 396.40 2.6874 398.00 7.3564 399.60 22.971 394.90 1.7245 396.50 2.7396 398.10 8.1728 399.70 24.022 ' 395.00 1.8047 396.60 2.7908 398.20 9.0244 399.80 25.070 395.10 1.8816 396.70 2.8411 398.30 9.9074 399.90 26.115 395.20 1.9554 396.80 2.8905 398.40 10.818 400.00 27.154 ' 395.30 2.0265 396.90 2.9391 398.50 11.754 t 1 ' 8/9/00 2 : 24 : 55 pm Dodds Engineers, Incorporated page 5 MAPLEWOOD PARCEL PROJECT NO. 94168 Revised 8/9/00 STAGE DISCHARGE TABLE ' NOTCH WEIR ID No. NOTCH Description: NOTCH ' Weir Length: 1 . 9500 ft , Weir height (p) 3 , 3400 ft . Elevation 397 . 25 ft . Weir Increm: 0 . 10 STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> (ft) ---cfe-- ------- (ft) ---cfa-- ------- (ft) ---cfe-- ------- (ft) ---cfa-- ------- 397.25 0.0000 398.00 3.9281 398.80 10.936 399.60 18.935 397.30 0.0711 398.10 4.7034 398.90 11.906 399.70 19.951 397.40 0.3667 398.20 5.5144 399.00 12.889 399.80 20.965 397.50 0.7837 398.30 6.3572 399.10 13.881 399.90 21.975 397.60 1.2893 398.40 7.2284 399.20 14.883 400.00 22.980 397.70 1.8663 398.50 8.1246 399.30 15.891 397.80 2.5036 398.60 9.0411 399.40 16.903 ' 397.90 3.1931 398.70 9.9811 399.50 17.919 1 8/9/00 2 :24 : 55 pm Dodds Engineers, Incorporated page 6 MAPLEWOOD PARCEL PROJECT NO. 94168 Revised 8/9/00 STAGE DISCHARGE TABLE ' MULTIPLE ORIFICE ID No. ORIFICE Description: ORIFICE ' Outlet Elev: 393 . 85 Elev: 391 . 85 ft Orifice Diameter: 7 . 8750 in. STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> (ft) --cfa-- - (ft) --cfS-- (ft) --cfS-- - (ft) --cfa-- - ' 393.85 0.0000 395.40 2.0952 397.00 2.9869 398.60 3.6678 393.90 0.3763 395.50 2.1617 397.10 3.0339 398.70 3.7062 394.00 0.6518 395.60 2.2263 397.20 3.0802 398.80 3.7443 ' 394.10 0.8415 395.70 2.2890 397.30 3.1259 398.90 3.7819 394.20 0.9956 395.80 2.3501 397.40 3.1709 399.00 3.8192 394.30 1.1289 395.90 2.4096 397.50 3.2152 399.10 3.8561 394.40 1.2481 396.00 2.4676 397.60 3.2590 399.20 3.8926 ' 394.50 1.3568 396.10 2.5244 397.70 3.3021 399.30 3.9288 394.60 1.4575 396.20 2.5799 397.80 3.3447 399.40 3.9647 394.70 1.5516 396.30 2.6342 397.90 3.3868 399.50 4.0003 394.80 1.6403 396.40 2.6874 398.00 3.4284 399.60 4.0355 394.90 1.7245 396.50 2.7396 398.10 3.4694 399.70 4.0704 395.00 1.8047 396.60 2.7908 398.20 3.5100 399.80 4.1051 ' 395.10 1.8816 396.70 2.8411 398.30 3.5501 399.90 4.1394 395.20 1.9554 396.80 2.8905 398.40 3.5898 400.00 4.1735 395.30 2.0265 396.90 2.9391 398.50 3.6290 1 1 1 8/9/00 2 :24 : 57 pm Dodds Engineers, Incorporated page 7 MAPLEWOOD PARCEL PROJECT NO. 94168 Revised 8/9/00 LEVEL POOL TABLE SUMMARY ' MATCH INFLOW -STO- -DIS- <-PEAK-> OUTFLOW STORAGE <--------DESCRIPTION---------> (cfs) (cfs) --id- --id- <-STAGE> id (cfs) VOL (cf) 2 YR .... ..................... 3.09 12.51 POND COMBO 397.20 9 3.08 3 ac-ft 5 YR 7.98 18.74 POND COMBO 397.92 10 6.77 3 ac-ft 10 YR 10.49 22,45 POND COMBO 198.21 11 9,15 3 ac-ft 1 100 YR 18.73 33.86 POND COMBO 399.19 12 18.68 4 ac-ft 1 i 1 1 1 i 1 i 1 1 1 ' The routing results are summarized as follows: ROUTING RESULTS 2 year 5-year 10 year 100 year ' storm storm storm storm Qp allowable release from site (cfs) 3.09 7.98 10.49 18.73 ' (adjusted 2 yr outflow by 50%) Hydrographs 1, 2, 3, 4 Qp developed(cfs) 12.51 18.75 22.45 33.86 ' Hydrographs 5, 6, 7, 8 Qp out of pond(cfs) 3.09 6.78 9.15 18.72 ' Hydrographs 9, 10, 11, 12 Pond live storage required CF 111,700 136,350 147,269 185,121 Pond live storage provided(CF)w/ 136,128 167,384 182,536 233,041 ' safety factor of 10% for 2-yr and 30% for remaining storms ' See attached volume calculations spreadsheet for the actual pond to be constructed on the following page. ' Design of the emergency overflow spillway for the pond is calculated below. ' The maximum water surface is at EL 399.19. The spillway will be placed at EL 400.00 with a berm located at EL 401.00 The depth of water over the spillway will be 0.7 feet. The overflow elevation therefore will be equal to 400.0 plus 0.7 or 400.7. ' L=(Qtoo/(3.21H3/2))- 2.411 ' L=(33.86/(3.21(0.7)")) -2.4(0.7)= 16.3 feet minimum =:>USE 16.5 feet A minimum of 0.3 feet of freeboard above the overflow elevation is required. Therefore, ' the berm height for the pond needs to be greater than or equal to 400.70 plus 0.3 or 401.00. The actual berm height for the pond is 401.00 which is equal to the minimum. 1 1 ' SECTION IV: CONVEYANCE SYSTEM ANALYSIS & DESIGN: The conveyance system for the site was designed for both the 25-year, 24-hour storm and ' the 100-year, 24-hour storm. The conveyance sheets were generated using the rational method to calculate flows for each area collected by each catch basin. ' A conveyance spreadsheet was produced for both the 25-year and 100-year storms. Backwater calculations were also performed in accordance with KCSWDM, Chapter 4. The flows generated from both storms were input into a backwater analysis spreadsheet t to confirm adequate sizing. Some of the flows were manipulated if they exceeded the SBUH flows for the entire site including the tributary areas and open space collected by the conveyance system. ' The backwater analysis was performed to ensure that during the 25-year design storm, the maximum water surface elevation in each structure did not exceed an elevation equal to ' 0.5' less the rim and during the 100-year design storm, the maximum water surface elevation did not exceed the rim. Exceedance of a rim would be allowed if the topography of the basin would allow the overflow to be conveyed to the next downstream catch basin or if the topography could ensure that ponding would not cause damage. t A weighted C value was used for each area collected by each catch basin. A breakdown of the amount of the site, open space, and tributary areas flowing into each catch basin is listed on the following pages. For each area(site, open space, and/or tributary area), an ' average C value was used. The amount of area that a specific catch basin collects takes into account the amount of the site, open space, and/or tributary area it is collecting and calculates a weighted C value for that catch basin. See the following pages for the ' calculated C values for each catch basin. Developed Site: C (average) _ [25.64Ac(0.25) +23.06Ac(0.90)]/48.70Ac=0.56 ' Open Space: C =0.15 Tributary Area 1: C (average) _ [2.OlAc(0.15) + 0.86Ac(0.20) +2.07Ac(0.25) + 4.39Ac(0.80) + 1.30Ac(0.90)]/l0.63Ac= 0.53 Tributary Area 3: C (average) _ [7.66Ac(0.15) + 0.26Ac(0.20) + 0.28Ac(0.80) + ' 0.80Ac(0.90)]/9.00Ac=0.24 ' The maximum SBUH flows were calculated and used for those rational flows that exceeded the maximum SBUH flows. The maximum SBUH flows were calculated for both the 25-year and 100-year storms. See Waterworks printouts on the following pages ' for flows from the developed site, open space, and tributary areas. The four areas for a specific storm were added together to derive the maximum SBUH flows. ' Maximum SBUH Flow=Developed Site+ Open Space+Tributary Area 1 +Tributary Area 2 ' Max. SBUH Flow(25-year)=21.51 + 1.84 + 3.90 + 3.04=30.29 cfs Max. SBUH Flow (100-year) =25.48 + 2.36 +4.74+ 3.83 =36.41 cfs 1 Catch SBLJH Areas SBUH Flows(cfs) .Basin 25-Year 100-Year ' 2 A,B,C,D,1,2,3,4,5,6,7,8,9,10 33.81 40.46 3 A,B,C,D,1,2,3,4,5,6,7,8,9,10 33.81 40.46 ' 3A 7 1.69 2.01 4 9 2.87 3.42 4A 9 2.87 3.42 ' 5 9 2.87 3.42 5A 9 2.87 3.42 ' 6 9 2.87 3.42 6A 9 2.87 3.42 7 9 2.87 3.42 ' 7A 9 2.87 3.42 7B 9 2.87 3.42 7C 9 2.87 3.42 ' 7D 9 2.87 3.42 8 9 2.87 3.42 8A 9 2.87 3.42 9 9 2.87 3.42 10 9 2.87 3.42 ' 11 , A,B,C,D,1,2,3,4,5,6,7,8 30.65 36.69 12 A,B,C,D,1,2,3,4,5,6,7,8 30.65 36.69 12A 7 1.69 2.01 ' 13 A,B,C,D,1,2,3,4,5,6,7,8 30.65 36.69 14 A,B,C,D,1,2,3,4,5,6,7,8 30.65 36.69 15 A,B,C,D,1,2,3,4,5,6,7,8 30.65 36.69 16 6,8 6.22 7.36 17 6,8 6.22 7.36 18 6,8 6.22 7.36 18A 8 1.78 2.11 19 6,8 6.22 7.36 20 8 1.78 2.11 20A 8 1.78 2.11 21 6 4.44 5.24 21 A 6 4.44 5.24 22 6 4.44 5.24 ' 23 6 4.44 5.24 23A 6 4.44 5.24 24 6 4.44 5.24 24A 6 4.44 5.24 ' Catch SBUH Areas SBUH'Flows cfs Basin 25-Year 100=Year 25 6 4.44 5.24 25A 6 4.44 5.24 ' 26 6 4.44 5.24 26A 6 4.44 5.24 27 6 4.44 5.24 ' 28 6 4.44 5.24 28A 6 4.44 5.24 ' 29 6 4.44 5.24 30 6 4.44 5.24 30A 6 4.44 5.24 ' 31 6 4.44 5.24 31 A 6 4.44 5.24 32 A,B,C,D,1,2,3,4,5,7 24.43 29.33 ' 32A 7 1.69 2.01 33 A,B,C,D,1,2,3,4,5,7 24.43 29.33 ' 33A 7 1.69 2.01 34 AB,C,D,1,2,3,4,5 22.73 27.32 35 AB,C,D,1,2,3,4,5 22.73 27.32 ' 35A 5 2.30 2.72 36 AB,C,D,1,2,3,4,5 22.73 27.32 ' 37 A,D,1,2,3,4,5 20.48 24.64 38 5 2.30 2.72 39 A,2,3,4 11.73 14.01 ' 40 A,2,3 9.84 11.77 40A 3 7.33 8.80 41 A,2,3 9.84 11.77 ' 41A 3 7.33 8.80 42 A,2,3 9.84 11,77 ' 43 A,2,3 9.84 11.77 43A 3 7.33 8.80 44 A,2,3 9.84 11.77 ' 45 A,2,3 9.84 11.77 45A 3 7.33 8.80 46 A,2,3 9.84 11.77 ' 47 A,3 8.80 10.54 48 3 7.33 8.80 ' 48A 3 7.33 8.80 49 A 1.47 1.74 ' Catch SBUH Areas SBUH Flows (cfs) Basin 25-Year 100-Year ' 49A A 1.47 1.74 50 A 1.47 1.74 ' 50A A 1.47 1.74 51 B 1.16 1.37 52 B 1.16 1.37 r53 B 1.16 1.37 54 B 1.16 1.37 54A B 1.16 1.37 55 C 1.09 1.31 56 C 1.09 1.31 ' 57 C 1.09 1.31 58 D,1,5 8.75 10.63 59 D,1,5 8.75 10.63 60 D,1,5 8.75 10.63 60A 5 2.30 2.72 ' 61 D,1,5 8.75 10.63 62 D,1,5 8.75 10.63 62A 5 2.30 2.72 ' 63 D,1 6.45 7.91 64 1 1.90 2.33 ' 64A 1 1.90 2.33 65 D,1 6.45 7.91 65A 1 1.90 2.33 66 D,1 6.45 7.91 67 1 1.90 2.33 67A 1 1.90 2.33 68 D,1 6.45 7.91 68A 1 1.90 2.33 69 D,1 6.45 7.91 ' 69A 1 1.90 2.33 70 D,1 6A5 7.91 ' 70A_ 1 1.90 2.33 71 D 4.55 5.59 71A D 4.55 5.59 72 D 4.55 5.59 72A D 4.55 5.59 73 D 4.55 5.59 ' 73A D 4.55 5.59 ' Catch SBUH Areas SBUH Flows (cfs) Basin 25-Year I 100-Year 74 41 1.891 2.24 74A 4 1.89 2.24 75 4 1.89 2.24 ' 75A 4 1.89 2.24 76 4 1.89 2.24 76A 4 1.89 2.24 ' 77 4 1.89 2.24 78 4 1.89 2.24 79 4 1.89 2.24 80 4 1.89 2.24 81 4 1.89 2.24 ' 82 4 1.89 2.24 82A 4 1.89 2.24 83 4 1.89 2.24 ' 83A 4 1.89 2.24 84 2 1.04 1.23 84A 2 1.04 1.23 85 2 1.04 1.23 85A 2 1.04 1.23 86 D 4.55 5.59 87 D 4.55 5.59 88 D 4.55 5.59 ' 88A D 4.55 5.59 89 D 4.55 5.59 ' 6/14/00 1 :29 :43 pm Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL PROJECT-NO. -94168____________________________________________________ BASIN SUMMARY ' BASIN ID: DEV02501 NAME: DEV SITE 25 YR STORM AREA 1 SBUH METHODOLOGY TOTAL AREA. . . .. . . : 1 . 98 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE- - : TYPEIA PERV IMP PRECIPITATION. . . . : 3 . 46 inches AREA. . : 1 . 04 Acres 0 . 94 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 PEAK RATE: 1 . 11 cfs VOL: 0 .43 Ac-ft TIME : 480 min BASIN ID: DEV02502 NAME : DEV SITE 25 YR STORM (AREA 2) SBUH METHODOLOGY ' TOTAL AREA. . . . . . . : 1 . 85 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 . 46 inches AREA. . : 0 . 97 Acres 0 . 88 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 PEAK RATE: 1 . 04 cfs VOL: 0 .40 Ac-ft TIME : 480 min BASIN ID: DEV02503 NAME : DEV SITE 25 YR STORM (AREA 3) SBUH METHODOLOGY ' TOTAL AREA. . . . . . . : 6 . 31 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 . 46 inches AREA. . : 3 . 32 Acres 2 . 99 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE: 3 . 54 cfs VOL: 1 . 37 Ac-ft TIME: 480 min BASIN ID: DEV02504 NAME: DEV SITE 25 YR STORM (AREA 4) SBUH METHODOLOGY ' TOTAL AREA. . . . . . . : 3 . 32 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 .46 inches AREA. . : 1 . 75 Acres 1 .57 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 PEAK RATE: 1 . 86 cfs VOL: 0 . 72 Ac-ft TIME : 480 min 6/14/00 1 : 29 :43 pm Dodds Engineers, Incorporated page 2 MAPLEWOOD PARCEL PROJECT NO. 94168 ' BASIN SUMMARY BASIN ID: DEV02505 NAME : DEV SITE 25 YR STORM (AREA 5) ' SBUH METHODOLOGY TOTAL AREA. . .. . . . . : 4 . 08 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 .46 inches AREA. . : 2 . 15 Acres 1 . 93 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 .20 PEAK RATE: 2 . 29 cfs VOL: 0 . 89 Ac-ft TIME : 480 min BASIN ID: DEV02506 NAME: DEV SITE 25 YR STORM (AREA 6) 1 SBUH METHODOLOGY TOTAL AREA. . . . . . . : 7 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 .46 inches AREA. . : 4 . 01 Acres 3 . 62 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE: 4 . 29 cfs VOL: 1 . 66 Ac-ft TIME : 480 min BASIN ID: DEV02507 NAME : DEV SITE 25 YR STORM (AREA 7) SBUH METHODOLOGY TOTAL AREA. . . . . . . : 2 . 89 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 .46 inches AREA. . : 1 . 52 Acres 1 . 37 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE: 1 . 62 cfs VOL: 0 . 63 Ac-ft TIME : 480 min BASIN ID : DEV02508 NAME: DEV SITE 25 YR STORM (AREA 8) SBUH METHODOLOGY TOTAL AREA. . . . . . . : 2 . 97 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 .46 inches AREA. . : 1 . 56 Acres 1 .41 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 .20 PEAK RATE : 1 . 67 cfs VOL: 0 . 65 Ac-ft TIME : 480 min 6/14/00 1 :29 :43 pm Dodds Engineers, Incorporated page 3 ' MAPLEWOOD PARCEL PROJECT NO. 94168 ' BASIN SUMMARY BASIN ID: DEV02509 NAME : DEV SITE 25 YR STORM (AREA 9) ' SBUH METHODOLOGY TOTAL AREA. . .. .. . . . : 4 . 69 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 .46 inches AREA. . : 2 .47 Acres 2 .22 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 .20 PEAK RATE : 2 . 63 cfs VOL: 1 . 02 Ac-ft TIME : 480 min BASIN ID: DEV0250A NAME : DEV SITE 25 YR STORM (AREA A) SBUH METHODOLOGY TOTAL AREA. . . . . . . : 2 . 62 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 .46 inches AREA. . : 1 .38 Acres 1 .24 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE: 1 . 47 cfs VOL: 0 . 57 Ac-ft TIME: 480 min BASIN ID: DEV0250B NAME : DEV SITE 25 YR STORM (AREA B) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 2 . 06 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 .46 inches AREA. . : 1 . 08 Acres 0 . 98 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE : 1 . 16 cfs VOL: 0 .45 Ac-ft TIME: 480 min BASIN ID: DEV0250C NAME: DEV SITE 25 YR STORM (AREA C) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 1 . 76 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP 1 PRECIPITATION. . . . : 3 .46 inches AREA. . : 0 . 93 Acres 0 . 83 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 .20 IPEAK RATE: 0 . 99 cfs VOL: 0 . 38 Ac-ft TIME : 480 min 6/14/00 1 :29 :44 pm Dodds Engineers, Incorporated page 4 ' PROJECT NO. 94168 MAPLEWOOD PARCEL BASIN SUMMARY BASIN ID: DEV0250D NAME: DEV SITE 25 YR STORM (AREA D) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 3 .49 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 .46 inches AREA. . : 1 . 84 Acres 1 . 65 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE : 1 . 96 cfs VOL: 0 . 76 Ac-ft TIME : 480 min BASIN ID: DEV02510 NAME: DEV SITE 25 YR STORM (AREA 10) SBUH METHODOLOGY TOTAL AREA. . . . . . . : 0 . 52 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 .46 inches AREA. . : 0 . 27 Acres 0 .25 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE : 0 . 29 cfs VOL: 0 . 11 Ac-ft TIME: 480 min 6/14/00 1 : 31 :21 pm Dodds Engineers, Incorporated page 1 ' MAPLEWOOD PARCEL PROJECT NO. 94168 BASIN SUMMARY BASIN ID: DEV10001 NAME : DEV SITE 100 YR STORM (AREA 1) ' SBUH METHODOLOGY TOTAL AREA. . .. . . . . : 1 . 98 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 1 . 04 Acres 0 . 94 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE: 1 . 31 cfs VOL: 0 . 51 Ac-ft TIME : 480 min BASIN ID: DEV10002 NAME : DEV SITE 100 YR STORM (AREA 2) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 1 . 85 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 0 . 97 Acres 0 . 88 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE: 1 . 23 cfs VOL: 0 .47 Ac-ft TIME : 480 min BASIN ID: DEV10003 NAME : DEV SITE 100 YR STORM (AREA 3) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 6 . 31 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 3 . 32 Acres 2 . 99 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . • 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 .20 ' PEAK RATE: 4 . 19 cfs VOL: 1 . 62 Ac-ft TIME : 480 min BASIN ID: DEV10004 NAME: DEV SITE 100 YR STORM (AREA 4) SBUH METHODOLOGY TOTAL AREA. . . . . . . : 3 . 32 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 1 . 75 Acres 1 . 57 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE: 2 . 20 cfs VOL: 0 . 85 Ac-ft TIME : 480 min 6/14/00 1 : 31 :21 pm Dodds Engineers, Incorporated page 2 ' PROJECT NO. 94168 MAPLEWOOD PARCEL ' BASIN SUMMARY BASIN ID: DEV10005 NAME : DEV SITE 100 YR STORM (AREA 5) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 4 . 08 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 2 . 15 Acres 1 . 93 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . • 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 PEAK RATE : 2 . 71 cfs VOL: 1 . 05 Ac-ft TIME : 480 min BASIN ID: DEV10006 NAME: DEV SITE 100 YR STORM (AREA 6) SBUH METHODOLOGY TOTAL AREA. . . . . . . : 7 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 4 . 01 Acres 3 . 62 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 .20 PEAK RATE : 5 . 06 cfs VOL: 1 . 96 Ac-ft TIME : 480 min BASIN ID: DEV10007 NAME: DEV SITE 100 YR STORM (AREA 7) SBUH METHODOLOGY TOTAL AREA. . . . . . . : 2 . 89 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ! PRECIPITATION. . . . : 3 . 95 inches AREA. . : 1 . 52 Acres 1 . 37 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE: 1 . 92 cfs VOL: 0 . 74 Ac-ft TIME : 480 min BASIN ID: DEV10008 NAME: DEV SITE 100 YR STORM (AREA 8) ' SBUH METHODOLOGY TOTAL AREA. . . . . . • 2 . 97 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ! PRECIPITATION. . . . : 3 . 95 inches AREA. . : 1 . 56 Acres 1 .41 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . 86 . 00 98 . 00 TC. . . . . 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 .20 ' PEAK RATE: 1 . 97 cfs VOL: 0 . 76 Ac-ft TIME: 480 min ! 6/14/00 1 : 31 : 21 pm Dodds Engineers, Incorporated page 3 ' PROJECT N0. 94168 MAPLEWOOD PARCEL BASIN SUMMARY BASIN ID: DEV10009 NAME : DEV SITE 100 YR STORM (AREA 9) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 4 . 69 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 2 .47 Acres 2 .22 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 .20 ' PEAK RATE: 3 . 11 cfs VOL: 1 . 20 Ac-ft TIME : 480 min BASIN ID: DEV1000A NAME: DEV SITE 100 YR STORM (AREA A) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 2 . 62 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 1 . 38 Acres 1 .24 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 .20 PEAK RATE: 1 . 74 cfs VOL: 0 . 67 Ac-ft TIME : 480 min BASIN ID: DEV1000B NAME : DEV SITE 100 YR STORM (AREA B) ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 2 . 06 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 1 . 08 Acres 0 . 98 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . 86 . 00 98 . 00 TC. . . . . 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 ' PEAK RATE: 1 . 37 cfs VOL: 0 . 53 Ac-ft TIME: 480 min BASIN ID: DEV1000C NAME : DEV SITE 100 YR STORM (AREA C) SBUH METHODOLOGY TOTAL AREA. . . . . . . : 1 . 76 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPElA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 0 . 93 Acres 0 . 83 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . 86 . 00 98 . 00 TC. . . . . 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 .20 ' PEAK RATE: 1 . 17 cfs VOL: 0 .45 Ac-ft TIME: 480 min 6/14/00 1 : 31 :21 pm Dodds Engineers, Incorporated page 4 ' PROJECT N0. 94168 MAPLEWOOD PARCEL ' BASIN SUMMARY BASIN ID: DEV1000D NAME : DEV SITE 100 YR STORM (AREA D) ' SBUH METHODOLOGY TOTAL AREA. . .. . . . . : 3 .49 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 1 . 84 Acres 1 . 65 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ' ABSTRACTION COEFF: 0 . 20 PEAK RATE : 2 . 32 cfs VOL: 0 . 89 Ac-ft TIME : 480 min BASIN ID: DEV10010 NAME : DEV SITE 100 YR STORM (AREA 10 ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 0 . 52 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 0 .27 Acres 0 .25 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . • 86 . 00 98 . 00 TC. . . . : 10 . 00 min 10 . 00 min ABSTRACTION COEFF: 0 . 20 PEAK RATE : 0 . 35 cfs VOL: 0 . 13 Ac-ft TIME : 480 min MAPLEWOOD PARCEL Catch Basin Sub-basin Areas ' Note: CB's 41 42 71 72 73 86 88A & 89 have flows coming from , , g Tributary Area 3. All other CB's collecting tributary flows are collecting from Tributary Area 1. Sub Total Site Upstream Trib. Open Space Composite` Basin/ Area Area Area(Acres) Area C Value ' Catch (Acres) (Acres), C=0.56 C=0.53 (Trib 1) (Acres), C=0.15 Basin C=0.24(Trib 3) 3 p 3..... 0.52 0.00 0.00. ........... 3A :: 5:4::::::: 0.54 0.00 4 :::0:=,5..7::::::: 0.57 0.00 0.00:.... Q:S6...: 4A ::f?5 ::::::: 0.55 0.00 0.00.:.:.:.:.43: 6:::::::: ' S :#}; :: 0.56 0.00 0.00:::*:*:::: 5A .:Q S4:.:.:. 0.54 0.00 0.00:..... :-.fi:.»:. 6 >.fl:39>:: 0.39 0.00 0.00??:?{1;56. .: ' 6A Q :... 0.17 0.00 0.00.....4: 6.... 7 0.02 0.00 0.00 7A : 0.30 0.00 0.00.....E ' 7B ::::b::i :. 0.12 0.00 0.00:::::::::0.'. 6:.:.:::. 7C : 0.04 0.00 0.00. 7D 0.27 0.00 0.00:::::::::0:5f ' 8 .:.:fl 45.:.:.:. 0.45 0.00 0.00.:.:.:::.:0:5.6.:::::.: 8A >.:.0�3..> 0.33 0.00 0.00 .... 06 .::. 9 p�I.... 0.21 0.00 0.00 ' 10, :::-.:j 3:7:::'' 0.17 0.19 1.01 :' :?:.O:Z ':::: 11 ...A`3.9.:.:.:. 0.39 0.00 O.00::::: Q: 6::::: 12A' ?.A3�:"` 0.39 0.00 0.00 : >.:Q; :.:' : 13 SQ: .... 0.41 0.00 0.00::::: 3: G`::: ' 14 ........... 0.46 0.00 0.00:.:. :.: .......... 15 ; 0.16 0.00 0.00.....4: 5...: 16 0.02 0.00 0.00::"::*{: . 18 4 0.43 0.00 0.00 { 56 i 8A >.I:$4:... 1.20 0.00 t 19 <......:.:.: 0.48 0.00 0.00`..... ......: 20 <::fla35.:." 0.05 0.00 0.00 .:. . 6 ..< 20A 0.19 0.00 0.00 21 :.: 3 ..:.:. 0.23 0.00 0.00 ..... �6.:.:. : 21A 04 ;.:.: 0.44 0.00 0.00::::: ..0.6:.,.:: Sub- Total Site Upstream Trib. Open Space Composite Basin/ Area Area Area(Acres) Area C Value ' Catch (Acres) (Acres), C=0.56 C=0.53 (Trib 1) (Acres), C=0.15 Basin C=0.24(Trib 3) 22 Q 6:.:::: 0.16 0.00 0.00.... ' 23 :#13 .::: 0.32 0.00 0.00................: 23A :.::065:>:: 0.65 0.00 0.00 24 0.11 0.00 ' 24A ........: . 0.75 0.00 0.00 .:....0: ..:.:.. 25 0.04 0.00 0.00 25A :fl76.:.: 0.76 0.00 ' 26 .:.b:0? ::; 0.04 0.00 O.00.....O::S6 ::.: 26A fl:g4:::: 0.89 0.05 0.00 27 .:05:� :. 0.57 0.00 0.00..........................................5...... ' 28 ::A : ::::::: 0.11 0.00 0.00.:.:.::::......:: 28A ::1:42::: 0.88 0.14 0.00:::::::::-0.56::: 29 >::� ;3:`:>: 0.23 0.00 0.00:::: ::(;56:;::::: ' 30 %:::4:(9... 0.09 0.00 0.00 :::: F ?>: 30A .#f>}7::::::: 0.83 0.14 0.00 31 :::Q:{# :::: 0.01 0.00 0.00.::::f: G: ' 3lA :......: 0.52 0.08 0.00.............:.: 32 :: : i:Q$:::: 0.08 0.00 32A '.#}4{i:': 0.08 0.00 0.32 ?".::0... 23;<::: ' 33 :Q4::: 0.04 0.00 0.00.::.:.:. 6 :::. 33A :.fl2�::: 0.10 0.00 0.10 34 0.19 0.00 ' 35 :::......... 0.34 0.00 0.00:...... 6..:.:.: 35A .. ..: 0.29 0.00 0.00:::::::::*0.*5:6:.:.:.:. 36 :.�{ <» 0.09 0.00 0.00::::: :::4:56 :... 38 .Oi:}:::::.: 0.11 0.00 0.00 39 ;:#},pp;::::: 0.00 0.00 0.00` ::.:{ ' 40 ::0::24 ;::: 0.24 0.00 0.00:::::. : : C ::::: 40A 0;43:.::::: 0.43 0.00 0.00::::::::::(; ::: 41 ::f?7$::::::: 0.53 0.25 0.00:::::::::43:4:G.:.: ' 41A :: 4$::::;:: 0.08 0.00 0.00 :::::::Q:56::'%" 42 :f}3:3>::::: 0.27 0.08 0.00> 43 ;:.::#?:03 0.03 0.00 0.00:?:::::: ' 43A : 83'?::: 0.83 0.00 0.00.: :::: ?:56':;:::: 44 :fl8>:: 0.28 0.00 0.00 :»>Q:S :.:.. 45 0,25 0.25 0.00 0.00. ' 45A ::::�64i:::::` 0.60 0.00 0.00:::::::::0.'. 6:.:... 46 : 1.01 0.00 0.00 47 :n:78 > 0.78 0.00 0.00 :::: O:Sf t48 :::.;4) f 5::::: 0.15 0.00 ' Sub- Total Site Upstream Trib. Open Space Composite Basin/ Area Area Area;(Acres) Area C Value Catch (Acres) (Acres), C=0.56 C=0.53 (Trib l) (Acres), C=0.15 Basin C=0.24 (Trib 3) 48A >? ;29:>::: 0.83 3.46 0.00 <4 :5 :::: > 49 :::f1:2:�:.:.:.: 0.21 0.00 0.00:.:.:.:::0:56: : 49A ::: 8X::::::: 0.42 1.45 0.00:::::::::0}5 :::::::: 50 #: ::: 0.95 0.34 0.00:::::::::: 5 :::.:.:: 50A ::::: 3: .:'. 1.04 0.27 0.00 '. :................ 51 ::::�:} ;:::::; 0.97 0.00 0.00.............. 52 : 0.06 0.00 0.00 ..............: ' 53 ....E.........: 0.62 0.00 0.00 :............. 54 ::::034::::::: 0.34 0.00 0.00::::::::::0::5:6:::::::: 54A ':n:0'';"> 0.07 0.00 ..............0.00:' : 3SC:::? ' 55 .......... 0.77 0.00 0.00:::'::::.:0 5�...:.. 56 ::::0: 8::::::: 0.48 0.00 0.00 ............ ............ .............. ' 57 :.........: 0.51 0.00 0.60 .:........... 58 :::::4:t0::::: 0.00 0.00 0.00:::::::::.............. 59 ::::� 2>::: 0.68 0.00 0.04:::::::' ............ ............. ............ .............. 60A :::::065:>:: 0.65 0.00 0.00 >::( ;$6:::»: 61 ::• :39::•::: 0.39 0.00 .............. 62 ::03 ...: 0.32 0.00 62A >`�............: 0,27 0.00 0.00>:»::b6> ::> 63 :;•:fl a0 >:: 0.00 0.00 0.00:::::::::0:56::<:: 64 >::fl #7>:->: 0.17 0.00 0.00' ' 64A a:b:35:?:: 0.18 0.00 0.17:. `.:0: 6 ? : 65 ::06::::::: 0.15 0.00 0.01 ::::::::4:5:3:::::::: 65A :::n:4 ::::::: 0.23 0.00 0.19:::::::::t3: 7:::::66 0.00 0.00 67 :::0:06:::::: 0.04 0.00 0.02:::::::::;G:...::::::: ............ .............. 68 :.:::33$:::;::: 0.14 0.99 2.25:::::::::4 ::::::: 68A" > :A¢7::?': 0.07 0.00 0.00::: ::{�;5 ::::::: ........... .............. ............ 69 69A >:>�47:>:: 0.07 0.00 0.00 :?:{*:�6.:::::::: 70 0.08 0.00 0.00 ........... .............. ' 70A :........ .. 0.06 0.00 0.00:::::.:::0:56y...; 71 ::::165::::::: 0.12 1.53 0.00: :::E?: 6::>:::: 71A 0.06 0.00 0.00:::::::::0:56x::::::: 72 ;:::: : � :::: 0.14 2.55 0.00::::::'::0:: 6::... 72A ... . �;::?? 0.07 0.00 0.00 :{:56:::::::: 73 ..:5$::»: 0.14 0.44 U.00::::::.:: 73A 0.06 0.00 ' Sub- Total Site Upstream Trib. Open Space Composite Basin/ Area Area Area(Acres) Area C Value, ' Catch (Acres) (Acres), C=0.56 C=°0.53 (Trib 1) (Acres), C=0.15 Basin C=0.24 (Trib 3) 74A Q::#3:::: 0.13 0.00 0.00:::::4?:SG:::: 75 .::.:0>0 .... 0.09 0.00 O.00 :..::. ... .. . 75A ::Q:{9>::: 0.09 0.00 0.00:>::::a: fi::: 76 0.09 0.00 0.00 76A ..:.......... 0.07 0.00 0.00'«'.0 6::. 77 ::0: ::: 0.05 0.00 0.00 78 0:#7:::: 0.17 0.00 0.00 :b 79 :: .i ... 0.14 0.00 0.00:: 80 : 0.24 0.00 0.00:::::A 81 ::n23: 0.23 0.00 0.00 : O:S6'.*. ' 82 ... :3$ 0.28 0.00 0.00:.......�6:::: 82A ; :n:4 ::: 0.42 0.00 0.03 >::E}:S�>:» 83 £):45 :: 0.45 0.00 0.00:: 0 36 .:.: ' 83A :f):9 . 0.78 0.00 0.13 :::::0:5Q.:::: 84 ::A : :.:.:.: 0.11 0.00 0.00 84A :::a7 ::::: 0.76 0.00 0.00::::::::: ' 85 ::A 22. 0.22 0.00 0.00: . .... 85A : 0.76 3.91 0.00::::::?:43: 3:?:>:: 86 »#i4:$<:: 0.64 0.84 0.00 87 .:.:......... 0.35 0.00 0.00 .........0.G.... 88 ::#12 ::: 0.23 0.00 0.00 ............ .............. 88A 2:{6:::: 0.59 1.47 0.00 >':`•C133:`:' 89 > 94:.: 1.09 0.85 0.00:::::: .: 3/1/00 8 : 9 : 33 am Dodds Engineers, Incorporated page 1 MAPLEWOOD PARCEL ' PROJECT NO. 94168 BASIN SUMMARY ' BASIN ID: DEV025 NAME : DEV SITE 25 YR STORM SBUH METHODOLOGY t TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 3 . 46 inches AREA. . : 25 . 64 Acres 23 . 06 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 86 . 00 98 . 00 ' TC. . . . : 28 . 19 min 28 . 19 min ABSTRACTION COEFF : 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0380 ' TcReach - Shallow L : 690 . 00 ks : 11 . 00 s : 0 . 0420 impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0380 impTcReach - Shallow L: 690 . 00 ks : 11 . 00 s : 0 . 0420 ' PEAK RATE : 21 . 51 cfs VOL: 10 . 61 Ac-ft TIME : 480 min BASIN ID: OPEN025 NAME : OPEN SPACE 25 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 5 . 51 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 3 .46 inches AREA. . : 5 . 51 Acres 0 . 00 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 10 . 00 min 0 . 00 min ABSTRACTION COEFF : 0 .20 ' PEAK RATE : 1 . 84 cfs VOL: 0 . 77 Ac-ft TIME : 480 min BASIN ID: TRIB1025 NAME: TRIB AREA 1 25 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE . . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 3 . 46 inches AREA. . : 4 . 94 Acres 5 . 69 Acres ' TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 29 . 83 min 29 . 83 min ABSTRACTION COEFF : 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 TcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 ' impTcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 PEAK RATE: 3 . 90 cfs VOL: 1 . 97 Ac-ft TIME : 490 min t t 3/1/00 8 : 9 :33 am Dodds Engineers, Incorporated page 2 ' PROJECT NO. 94168 MAPLEWOOD PARCEL --------------------------------------------------------------------- --------------------------------------------------------------------- ' BASIN SUMMARY BASIN ID: TRIB3025 NAME : TRIB AREA 3 25 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 3 . 46 inches AREA. . : 8 . 20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . : 15 . 91 min 15 . 91 min ABSTRACTION COEFF : 0 . 20 ' TcReach - Sheet L: 260 . 00 ns : 0 . 0110 p2yr: 2 . 00 s : 0 . 0660 TcReach - Sheet L : 40 . 00 ns : 0 . 4000 p2yr: 2 . 00 s : 0 . 0660 TcReach - Shallow L: 410 . 00 ks : 5 . 00 s : 0 . 0560 ' impTcReach - Sheet L : 260 . 00 ns : 0 . 0110 p2yr: 2 . 00 s : 0 . 0660 impTcReach - Sheet L: 40 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0660 impTcReach - Shallow L: 410 . 00 ks : 5 . 00 s : 0 . 0560 ' PEAK RATE : 3 . 04 cfs VOL: 1 . 38 Ac-ft TIME : 480 min 1 1 1 3/1/00 8 : 9 :46 am Dodds Engineers, Incorporated page 1 ' PROJECT NO. 94168 MAPLEWOOD PARCEL --------------------------------------------------------------------- --------------------------------------------------------------------- BASIN SUMMARY BASIN ID: DEV100 NAME: DEV SITE 100 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 48 . 70 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 25 . 64 Acres 23 . 06 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . 86 . 00 98 . 00 TC. . . . : 28 . 19 min 28 . 19 min ' ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0380 TcReach Shallow L: 690 . 00 ks : 11 . 00 s : 0 . 0420 impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0380 ' impTcReach - Shallow L: 690 . 00 ks : 11 . 00 s : 0 . 0420 PEAK RATE : 25 . 48 cfs VOL: 12 . 48 Ac-ft TIME : 480 min BASIN ID: OPEN100 NAME : OPEN SPACE 100 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 5 . 51 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE- . : TYPEIA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 5 . 51 Acres 0 . 00 Acres TIME INTERVAL. . . . ; 10 . 00 min CN. . . . : 81 . 00 0 . 00 TC. . . . . 10 . 00 min 0 . 00 min ABSTRACTION COEFF: 0 . 20 PEAK RATE : 2 . 36 cfs VOL: 0 . 95 Ac-ft TIME : 480 min ' BASIN ID : TRIB1100 NAME : TRIB AREA 1 100 YR STORM SBUH METHODOLOGY TOTAL AREA. . . . . . . : 10 . 63 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . , : TYPEIA PERV IMP ' PRECIPITATION. . . . : 3 . 95 inches AREA. . : 4 . 94 Acres 5 . 69 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 83 . 80 91 . 10 TC. . . . : 29 . 83 min 29 . 83 min ' ABSTRACTION COEFF: 0 .20 TcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 TcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 ' impTcReach - Sheet L: 300 . 00 ns : 0 . 1500 p2yr: 2 . 00 s : 0 . 0430 impTcReach - Shallow L: 1050 . 00 ks : 11 . 00 s : 0 . 0410 PEAK RATE : 4 . 74 cfs VOL: 2 . 36 Ac-ft TIME : 490 min 1 3/1/00 8 : 9 :46 am Dodds Engineers, Incorporated page 2 MAPLEWOOD PARCEL PROJECT NO. 94168 --------------------------------------------------------------------- --------------------------------------------------------------------- BASIN SUMMARY BASIN ID: TRIE3100 NAME : TRIB AREA 3 100 YR STORM ' SBUH METHODOLOGY TOTAL AREA. . . . . . . : 9 . 00 Acres BASEFLOWS : 0 . 00 cfs RAINFALL TYPE. . . . : TYPEIA PERV IMP PRECIPITATION. . . . : 3 . 95 inches AREA. . : 8 . 20 Acres 0 . 80 Acres TIME INTERVAL. . . . : 10 . 00 min CN. . . . : 81 . 30 98 . 00 TC. . . . : 15 . 91 min 15 . 91 min ' ABSTRACTION COEFF: 0 . 20 TcReach - Sheet L: 260 . 00 ns : 0 . 0110 p2yr: 2 . 00 s : 0 . 0660 TcReach Sheet L: 40 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0660 TcReach - Shallow L: 410 . 00 ks : 5 . 00 s : 0 . 0560 1 impTcReach - Sheet L: 260 . 00 ns : 0 . 0110 p2yr: 2 . 00 s : 0 . 0660 impTcReach - Sheet L: 40 . 00 ns : 0 .4000 p2yr: 2 . 00 s : 0 . 0660 impTcReach - Shallow L: 410 . 00 ks : 5 . 00 s : 0 . 0560 ' PEAK RATE : 3 . 83 cfs VOL: 1 . 69 Ac-ft TIME : 480 min ■r rr rr �r rr �r rr rr r� rr r rr �r r r r r� r r T Y. 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LOCATION: KING COUNTY 24-HRRAINFALL: 3.46 INCHES JOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 25 YEAR 'i i`INCR.£14i6N3AL!i`i'SiRb : .,.T1hYE OF.,..,RA3NFA7E.4...,.TIFIBl1TARY........:.:•:•:•:.:•:.::.;.�.I'IPE.�.:..•.�.YIRE.�.�..�.�R1PE�.�..�AC7: .�.�TRrtyEL.�..�.�.�.PIP:E.CAPACITY.SUMMASY:�:•.� ..S ':............. SFGt4i �P1tE EN?i'i i'i'i'i'iARI ::::: ........'.,1.,... A.... .CDERRIC ENt:': ' "i i;. , !i i i i :.:;:.:•::i i i i ..:::::::: '' iii ` i i :`' : °p`p0p:':°i°i SUM()iF' Cc1N.... ..,INTENSITY ,.::...ELt3N�.,..,•)VIA1vN)NC�3,. 4TA241k7BR..;.;SLDPE,.; LENGTH..V.Flo....I'S: ...TtME.•. Q(x'I?L.L).,:.V�F'ULL)...Q(ACTI E -):; .RQR1'ii:ii'1•,p:`::iii;ili' ::p: ....... .:..:...::.. (A,RES)':':`:i.:`:"i^G".:;j'�i :..'. (A;.t�•:•'�:iifA;'C') �[IT?7:FI'ES} � (IN Ilk {FT/SEC);i 01INl3;F :(G]FS} ,;,(FT/SEC) 41A 41 0.080 0.56 0.045 0.045 10.00 2.06 0.092 0.012 8 2.000 27 2.52 0.18 1.851 5.30 5.0% 41 40 0.780 0.46 0.359 10.735 11.72 1.86 19.950 0.012 12 3.A00 120 8.65 0.23 6.796 8.65 293.6% 40A 40 0.430 0.56 0.241 0.241 10.00 2.06 0.496 0.012 8 2.000 27 4.46 0.10 1.851 5.30 26.8% 40 39 0.240 0.56 0.134 11.111 11.95 1.93 20.387 0.0I2 12 1.090 55 5.13 0.18 4.030 5.13 505.9% 39 37 0,000 0.56 0.000 12.991 12.53 1.78 23.114 0.012 18 6.630 185 1 18.41 0.17 29.301 16.58 78.9% 38 37 0.110 0.56 0.062 0.062 10.00 2.06 0.127 0.012 12 20.000 29 5.05 0.10 17.261 21.98 0.7% 37 36 0.600 0.56 0.336 20.609 12,70 1.76 36.353 0.012 24 5.000 177 18.66 0.16 54.801 17.44 66.3% 36 35 0.090 0.56 0.050 21.737 12.86 1.75 38.035 0.012 24 0.500 159 5.52 0.48 17.329 5.52 219.5% 35A 35 0.290 0.56 0.162 0.162 10.00 2.06 0.335 0.012 8 8.400 27 6.41 0.07 3,794 10.87 8.8% 35 34 0.340 0.56 0.190 22.090 13.34 1.71 37.742 0.012 24 5.160 124 18.96 0.11 55.671 17.72 67.8% 34 33 0.190 0.56 0.106 23.350 13.45 1.70 39.684 0.012 24 0.500 78 5.52 0.24 17.329 5.52 229.0% 33A 33 0.200 0.36 0.072 0.072 10.00 2.06 0.148 0.012 8 18.200 27 6.08 0.07 5.585 16.00 2.7% 33 32 0.040 0.56 0.022 23.444 13.68 1.68 39.397 0.012 24 0.500 157 5.52 0.47 17.329 5.52 227.3% 32A 32 0.400 0.23 0.092 0.092 10.00 2.06 0.190 0,012 8 9.200 27 5.40 0.08 3.971 11.38 4.8% 32 15 0.080 0.56 0.045 23.581 14.16 1.64 38.759 0.012 24 12.420 38 26.53 0.02 86.370 27.49 44.9% F?1�1�rE 1.7.ys�� ,��� l.r ' ::: ::'' LOCATION: KING COUNTY 24-IIRRAINFALL: 3.46 INCHES OB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 25 YEAR >•IIYCiiE �'''�' ' � �'�'�'�'''':� :�;���'�'�' ����� .��:���:�::::�:::::�:::�::::::_:;:�:�:�:�:::�:�:�:::::::�:::�:::::�:�:::�:::�;:;: .,.FIMEOF.,..RP3CtFhf�....T.RI$l7TKRY...............•.,.,.,...�..P3PE.�...•..CIPk.....�RfP.E...A:::::::::::::::::::::::.:.:.:.:.:.:.:.:.:.:.:.::.:.:.:.:.:.:.:.:.:::::::::::::::::.:.:.:.:.:.:.:.....•.•...... 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LOCATION: KING COUNTY 24-FIR RAINFALL: 3.46 INCITES JOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 25 YEAR li .�:::55 1i�5iii�:�i kiii55i�i i�i�i�i�5i�i'•i ii;i...�..."�::::::�.;.�.�.�.�.�.�ij� '�0�0�'`�"�'i i[i iiii i i i ii ii;`'::':i:ii:;i::.:.:.:.:..:..i:'�'''�`�`i:i ii�`������i�i:is`•i:...�Ei . ..;�i��i`i";�'�.�`i���i;���`�'i'i`���`i�i�i�i .q1?..:.:.;. :•:•:•:.:..,;,;•.,;•.,.,,. 7f!NIEOF kAiNRlff.. ..T3E16llTARY,, ..P►PE.�.� .•.•.Y1B6.�:� .RIpE�:•::�AL*fU.4L.; ..:. Y t pE RIC 6y3 SUNG!!. C13NC. .;1NfEN$iTY; F.CGSN 1NANNit9GS:..D1AM63BR 31K1E L :V GC! F.... .,.�.. 1''•'!:.: ............•.•.•. .QQ?1�.)......tom...,), ..RQM::�:�:T9::::::::;: '`'`'�:�: ........ ............: .:..(.,.....3..............,.,.,.,...... .(A.. ..,.,....,L'::. k... CFS):.:.:.::..:.:.:.R:.:.:..: f�NCtt&S):::EPERL;F-iy"f)'i FEET::i i TVSEE':;jrij l3TE .IiSEC i i i i FRCFNT i i i 21 19 0.230 0.56 0.129 4.502 11.74 1.86 8.359 0.012 12 0.610 54 3.84 0.23 3.015 3.94 277.3% 20A 20 0.190 0.56 0.106 0.106 10.00 2.06 0.219 0.012 8 2.000 27 3.34 0.13 1.851 5.30 11.8% 20 19 0.050 0.56 0.028 0.134 10.13 2.04 0.275 0.012 12 3.100 200 4.11 0.81 6.796 8.65 4.0% 19 18 0.480 0.56 0.269 4.906 11.97 1.83 8.991 0.012 18 0.940 130 6.93 0.31 11.033 6.24 81.5% 18A 18 1.840 0.42 0.773 0.773 10.00 2.06 1.592 0.012 8 2.000 27 5.99 0.08 1.851 530 86.0% 18 17 0.430 0.56 0.241 5.919 12.29 1.80 10.668 0.012 18 0.500 100 4.55 0.37 8.047 4.55 132.6% 17 16 0.600 0.56 0.336 6.255 12.65 1.77 11.061 0.012 18 0.500 135 4.55 0.49 8.047 4.55 137.5% 16 15 0,020 0.56 0.011 6.266 13.15 1.72 10.808 0.012 18 0.500 60 4.55 0.22 8.047 4.55 134.3 15 14 0.160 0.56 0.090 29.937 14.18 1.64 49.152 0.012 30 0.500 140 6.40 0.36 31.420 6A0 156.4% 14 13 0.460 0.56 0.258 30.194 14.55 1.62 48.764 0.012 30 0.500 54 6.40 0.14 31.420 6.40 155.2% 13 12 0.410 0.56 0.230 30.424 14.69 1.60 48.829 0.012 30 0.500 42 6.40 0.11 31.420 6.40 155.4% 12A 12 0.390 0.56 0.218 0.218 10.00 2.06 0.450 0.012 8 8.700 27 6.97 0.06 3.861 11.06 11.7% 12 11 0.240 0.56 0.134 30.777 14.80 1.60 49,157 0.012 30 0.500 149 6.40 0.39 31.420 6.40 156.4% 11 3 0.390 0.56 0.218 30.995 15.18 1.57 48.680 0.012 30 0.800 73 8.10 0.15 39.744 8.10 122.5% 10 9 1.370 0.25 0,343 0.343 10.00 2.06 0.706 0.012 12 2.200 55 4.85 0.19 5.725 7.29 12.3% 9 8 0.210 0.56 0.118 0.460 10.19 2.04 0.937 0.012 12 3.000 138 5.92 0.39 6.685 9.51 14.0% 8A 8 0.330 0.56 0.185 0.185 10.00 2.06 0.381 0.012 8 2.000 27 4.11 0.11 1.851 5.30 20.6% 8 7 0.450 0.56 0.252 0.897 10.58 1.99 1.782 0.012 12 15.270 44 12.10 0.06 15.083 19.20 11.8% 7A 7 0.300 0.56 0.168 0.409 11.26 1.91 0.780 0.012 12 17.100 23 9.65 0.04 15.961 20.32 4.9% r r �r r rr rr r r r rr r� r� r� r rr rr r r rr � y�7 LOCATION:DESG� ` j Nv E KING COUNTY 24-HR RAINFALL: 3.46 INCHES OB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 25 YEAR .UVCR�MEIVi F .. :. :;:;TIME?DF,:':`•,.12A.1DfFA�.#..� i:TRIRUTARY�:.�i:5::i�i�`i�i�i�i:�.�i�PIP�:.::;::;:::PIP.Fi�i�:��i�.kiNE'i�.i'.ACTEI'l.'���:� Y �. :::.I ..A: .A.......�Rb..�4.:: :::.,P..,1'F CAkAC1TX:8WMM..RY:;: : s& ''FFI CMENE. 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R .:�4NCE1F :f R 3Fi7 :( )Tk ''(Fr/SEe)• (MINOT SJ IFS) .(Pfi5 c3..:..fp�kC 7 6 0.020 Q56 0.011 1.317 11.30 1.90 2.506 0.012 12 0.500 78 E6.75 0.33 2.729 3.47 91.8% 6A 6 0.170 0.56 0.095 0.095 10.00 2.06 0.196 0.012 8 17.500 27 0.07 5.476 15.69 3.6% 6 5 0.390 0.56 0.218 1.631 11.63 1.87 3.045 0.012 12 0.500 200 3.47 0.96 2.729 3.47 111.6% 5A 5 0.540 0.56 0.302 0302 10.00 2.06 0.623 0.012 8 8.800 27 8.07 0.06 3.883 11.13 16.0% 5 4 0.560 0.56 0.314 2.247 12.59 1.77 3.985 0.012 12 0.500 200 3.47 0.96 2.729 3.47 146.0% 4A 4 0.550 0.56 0.308 0.308 10.00 2.06 0.635 0.012 8 2.000 27 4.77 0.09 1.851 5.30 34.3% 4 3 0.570 0.56 0.319 2.874 13.55 1.69 4.860 0.012 12 0.500 132 3.47 0.63 2.729 3.47 178.1% 3A 3 0.540 0.56 0.302 0.302 10.00 2.06 0.623 0.012 8 2.000 27 4.69 0.10 1.851 5.30 33.7% 3 2 0.520 0.56 0.291 34.462 15.33 1.56 53.780 0.012 30 0.900 132 8.59 0.26 42.155 8.59 127.6% 2 2A 0.000 0.56 0.000 34.462 15.59 1.54 53.204 0.012 30 11.800 63 27.99 0.04 152.640 31.10 34.9% lR 1 1 tr i 1 X �ESI. :::.. LOCATION: KING COUNTY 24-HR RAINFALL: 3.95 INCHES FOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 100 YEAR N ...... .. E MF'iOFi i::RA3NFAf.E:::::TR�Bl7TARY: :::::::::::.:.:•:•::.:.:� :. I. :.p :.:..:- ............ BI:::::::PI$E:G3PAG1TYMAR i°'�'•'�':.iii ° � 'i ........... ..SU.....,...,�<1HC;.,.....INTEN�TY..,.....E4(}W,..;.:.::,iIiANNIp!rC�.::AIA?BRTFR..;.;S4AP£;:;..#.Er7GCH.:vBT:OCrrY;:•:•:.1[I1f16:.:.::.; irl„L.:..v. UL4::: aCT. fFr£L..: .f<NQM..:.�.T9...�..�.�.�.(ACWI ��.�.�.�...N.�...� . E...1......(..�}.,..iM.Mn'TL`t�)...:.,.(FN!Hlt)'I;i::!:!:;fc�i)::.:::.:.:.:.:.R:•::.:.::.:f�l�1CN�S);::(pF.11?4'EN'L'):::(FEET :::;:(FTiSEC1i::;IhiIN�3'C��i i;'.i{G�H):i::(F�!Sp.C)i i;i;iE{RERCEh1T1:::?! 71) 7C 0.270 0.56 0.151 0.151 10.00 2.42 0.365 0.012 12 2.000 27 3.75 0.12 5AS9 6.95 6.7% 7C 713 0.040 0.56 0.022 0.174 10.12 2.40 0.416 0.012 12 1.240 53 3.31 0.27 4.298 5.47 9.7% 713 7A 0.120 0.56 0.067 0.241 10.39 2.36 0.568 0.012 12 0.500 130 2.69 0.80 2.729 3.47 20.8% 89 88 1.940 0.42 0.815 0.815 I0.00 2.42 1.969 0.012 12 0.500 82 3.79 0.36 2.729 3.47 72.2% 88A 88 2.060 0.33 0.680 0.680 10.00 2.42 1.643 0.012 8 2.000 27 5.99 0.08 1.851 5.30 88.7% 88 87 0.230 0.56 0.129 1.623 10.36 2.36 3.837 0.012 12 2.000 186 7.51 0.41 5.458 6.95 70.3% 87 86 0.350 0.56 0.196 1.819 10.77 2.31 4.195 0.012 12 0.500 27 3.47 0.13 2.729 3.47 153.7% 86 71 1.480 0.38 0.562 2.382 10.90 2.29 5.451 0.012 12 1.020 52 4.96 0.17 3.898 4.96 139.8% 85A 85 4.670 0.53 2.475 2.475 10.00 2.42 5.982 0.012 8 2.000 27 5.30 0.08 1.851 5.30 323.1% 85 84 0.220 0.56 0.123 2.598 10.08 2.40 6.246 0.012 12 4.950 165 11.92 0.23 8.587 10.93 72.7% 84A 84 0.760 0.56 0.426 0.426 10.00 2.42 1.029 0.012 8 2.000 27 5.41 0.08 1.851 5.30 55.6% 84 46 0.110 0.56 0.062 3.086 10.32 2.37 7.312 0.012 12 0.500 72 3.47 035 2.729 3.47 267.9% 83A 83 0.910 0.50 0.455 0.455 10.00 2.42 1.100 0.012 8 2.000 27 5.52 0.08 1.851 5.30 59.4% 83 82 1 0.450 0.56 0.252 0.707 10.08 2.40 1.700 0.012 12 5.050 114 834 0.23 8.674 11.04 19.6% 92A 82 0.450 0.53 0.239 0.239 10.00 2.42 0.576 0.012 8 2.000 27 4.61 0.10 j 1.851 5.30 31.1% 82 81 0.280 0.56 0.157 1.102 10.31 2.37 2.613 0.012 12 4.520 96 9.09 0.18 8.206 10.45 31.8% 81 80 0.230 0.56 0.129 1.231 10.49 2.35 2.888 0.012 12 2.120 78 7.16 0.18 5.620 7.16 51.4% 80 79 0.240 0.56 0.134 1.366 10.67 2.32 3.169 0.012 12 0.500 27 3.47 0.13 2.729 3.47 116.1% 79 78 0.140 0.56 0.078 1.444 10.80 2.30 3.325 0.012 12 0.500 65 3.47 0.31 2.729 3.47 121.8% 78 77 0.170 0.56 0.095 1.539 11.11 2.26 3.481 0.012 12 0.500 28 3.47 0.13 2.729 3.47 12T6% 77 76 0.050 0.56 0.028 1.567 11.24 2.24 3.518 0.012 12 2.860 166 8.39 0.33 6.527 8.31 53.9% 7,,ljillri 1u�1 # 1 i�i {? i.A? l:Rt !J LOCATION: KING COUNTY 24-HR RAINFALL: 3.95 INCHES [JOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 100 YEAR AL':SINCtt£S7BNi :iiiii'RI11iDFBi`iEii5iiii555555i iii5iiiiiii:ii`'`'`'`:':`'`i[E "i' ''''''i ii''�'''':' ':i 55iii5i'•5i�i�i::ii'i`"` 55i Sit"''iii i'i""'Ji':i'i``::"ii i:i'"'`'`'`'E`:asE:f:" i:'��i��"�"�'�i ::i`:`: . PIPE.CARAGITY.SUMMARY.•.. ...............:� ..,.,.,.,.,.,,.,.E�NIEOF....I?a3RFAaf.76 ,.'fJRBUTARY F: .......... ti.._.....i..... C�tlNC• ...•.......................:.............NSlTY: i;iFLQ,.,......,.141AMg1}VC`S,i:.AIAM)STER.:;:SC,OPE;:.:.£ENCTH..V.E[:OCITY.y,:.9FIMlii;.�i:;iQEFI1LL;.; Y(FOCL}:`:Q(kCTI/cF(I�zF,E.$: C: ..A. .;... ....,. �.�.��.�. ( ..)..:.... .......... PERCENT 76A 76 0.070 0.56 0.039 0.039 10.00 2.42 0.095 0.012 8 2.000 27 2.68 0.17 1.851 5.30 5.1% 76 75 0.090 0.56 0.050 1.657 11.57 2.20 3.652 0.012 12 7.050 152 11.74 0.22 10.248 13.05 35.6% 75A 75 0.090 0.56 0.050 0.050 10.00 2.42 0.122 0.012 8 14.400 27 5.41 0.08 4.968 14.23 2.5% 75 74 0.090 0.56 0.050 1.758 11.79 2.18 3.829 0.012 12 0.800 170 4.40 0.64 3.452 4.40 110.9% 74A 74 0.130 0.56 0.073 0.073 10.00 2.42 0.176 0.012 8 2.000 27 3.21 0.14 1.851 5.30 9.5% 74 39 0.090 0.56 0.050 1,891 12.43 2.11 1963 0.012 12 0.800 55 4.40 0.21 3.452 4.40 114.8% 73A 73 0.060 0.56 0.034 0.034 10.00 2.42 0.081 0.012 8 2.000 27 2.52 0.18 1.851 5.30 4.4% 73 72 0.580 0.32 0.186 0.219 10.18 2.39 0.524 0,012 12 3.500 5.19 0.00 7.221 9.19 7.3% 72A 72 0.070 0.56 0.039 0.039 10.00 2.42 0.095 0.012 8 2.000 27 2.68 0.17 1.851 5.30 5.1% 72 71 2.690 0.26 0.699 0.958 10.18 2.39 2.289 0.012 12 2.660 185 7.33 0.42 6.295 8.02 36.4% 71A 71 0.060 0.56 0.034 0.034 10.00 2.42 0.081 0.012 8 2.000 27 2.52 0.18 1.851 5.30 4.4% 71 70 1.650 0.26 0.429 3.802 10.60 2.33 8.858 0.012 12 0.500 165 3.47 0.79 2.729 3.47 324.6% 70A 70 0.060 0.56 0.034 0.034 10.00 2.42 0.081 0.012 8 2.000 27 2.52 0.18 1.851 5,30 4.4% 70 69 0.080 0.56 0.045 3.881 11.39 2.23 8.640 0.012 12 1.830 200 1 6.65 0.50 5.221 6.65 165.5% 69A 69 0.070 0.56 0.039 0.039 10.00 2.42 0.095 0.012 8 2000. 27 2.68 0.17 1.851 5.30 5.1% 69 68 0.750 0.56 0.420 4.340 11.89 2,17 9.404 0,012 12 2.150 200 7.21 0.46 5.659 7.21 166.2% ........................ ......A..N........ ' :::::::.ST.'QRM::CONVEYCE..SYSTEM.,DE LOCATION: KING COUNTY 24-HR RAINFALL: 3.95 INCHES [JOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 100 YEAR ................... ...... ...... .......... �i:A rm A c:::::;T. ............ j; SUM*.Q. MGTH 90. iY., itt /H R) (macENT) Om: ................. ....(INCHES): 68A 68 0.070 0.56 0m039 0.039 10.00 2.42 0.095 0m012 8 2m000 27 2.68 0.17 1.851 5.30 5.1% 68 66 3.380 0.28 0.946 5.325 12.35 2.12 11.265 0.012 12 4.420 74 10.33 0.12 8.115 1033 138.8% 67A 67 0.040 0.56 0m022 0.022 lomoo 2.42 0m054 0m012 8 2.000 27 2m02 0.22 1.851 5.30 , 2.9% 67 66 0.060 0.42 0m025 0.048 10.22 2.38 0.113 0.012 12 0m500 -5mm1 1.65 0.51 2.729 3.47 4.2% 66 65 0,000 0.56 0.000 5.373 12.47 210 11.297 0.012 12 0.500 85 3.47 0.41 2.729 3.47 413.9% 65A 65 0.420 0m37 0.155 0m155 10.00 2.42 0.376 0.012 8 2.540 48 4m51 0.18 2.086 5.98 18.0% 65 63 Om 160 0.53 0085 5.613 12.88 2.06 11.566 0.012 12 0M500 110 3.47 0m53 2.729 3.47 423.8% 64A 64 0350 0.36 0.126 0.126 10.00 2.42 0.305 0.012 8 2.000 45 3.85 0.20 lm851 530 16.4% 64 63 0m170 0.56 0.095 0221 10.20 2.39 0.528 0.012 12 11.030 30 T75 0.06 12m819 1632 4m1% 63 62 0.000 0.56 0.000 5.834 13.41 2.01 11.721 0.012 12 omsoo 66 3.47 0.32 2.729 3.47 429.5% 62A 62 0.270 0.56 0.151 0m151 10.00 2.42 0.365 0.012 8 9m500 27 6.99 0M06 4.035 11.56 9.1% 62 61 0320 0.56 0m179 6.165 13.73 1.98 12.204 0m012 12 0m500 162 3.47 0.78 2.729 3.47 447.2% 61 60 0.390 0m56 0.218 6383 14.50 1.91 12.206 0m012 12 0.500 70 3.47 0.34 2.729 147 4472% 60A 60 0.650 0.56 0.364 0.364 lomoo 2.42 0.880 0m012 8 8.200 27 8.59_ 0.05 3.749 10.74 23.5% 60 59 0.150 0.56 0.084 6.831 14.84 1M88 12.875 0.012 12 0m550 85 3.64 0.39 2.862 3.64 449.8% 59 58 0.720 0.54 0389 7.220 15.23 L85 13.388 0.012 12 0m500 124 3.47 0.59 2.729 3.47 490.6% 58 37 0.000 0.56 0.000 7.220 15.82 1M81 13.069 0m012 12 0m540 124 3.61 0.57 2.836 3.61 460.8% 57 56 1.110 0m34 0.377 0.377 10.00 2.42 0.911 0.012 12 2.200 150 5m07 0.49 5.725 7.29 15.9% 56 55 0.480 LOCATION: KING COUNTY 24 HR RAINFALL: 3.95 INCHES [JOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 100 YEAR INERE1N6N3Ft1: :::RUNUFB::: tiA1EOF..:RAIBFAE4 .:rw6 R................................................::...:.. >..:.:..:.......... UTr,Y..::.::•:::i�i�i�i�i;i;i;iP3l!Ei;i`i�:i2IBE:�:�i:•:�l'ICF.:::ACT.ttRG.:::STRAYBI,?i:i�:`•iI'Ih�.'.CAPi4ClTY.SUMb1Al2Yi:i i 6N7'::..!....A .. E:::::_......tC .... ::!: ? ::;,..:;:.:;:;:;:;:;:; :.;:;:;;::::,;i i!''!'':`'`'`i i`'`'`E`'``:`'`:ii['5:'''°°'°55i::;:.:::":'::: ;:':.'::::: ::>:':,:::::':':':<'::,:: ..•..CUNC,.,.,..INtENEfTY..,.,.,.F.hOW.,...,,.M>taNlt9f.3.::DIAhtB3$R..;.:5£pPE.;..fENGTH..Vt40C7ly,.:.:.;TIME.;.;..:•. .U1L1:•::V IILL). ;.Q(rtCTycXfETEL.7; .....M. .�................5....$)..;i;i;;`i;:p:;:'!C":i;i;i;iii i;i;i;.:fA;.;E);i;i;i;�i;T+�!'L7i;�i�!�1)N.L:ITT33Ei i�l�illNdHRI....�...�ECF3)�.�.�.��.�.�.�.�.rt�.,�.�.��. NCH); �:: RC �.:�:REE.,:;�:; .ISEE��:� INUT6 :::�:.� :�:•:: t ...;.;.;.C Ff EE, ANT)...:...,.:...,..63. fP�....F,!`>•►) ..f....?7. ..EF?...).. .(�!....� ....{c�).....CF£SE�. ...;1.:�C ,.,.,. 55 36 0.770 0.56 0.431 1.077 10.62 2.33 2.507 0.012 12 4.980 65 9.38 0.12 8.613 10.97 29.1% 54A 54 0.070 0.56 0.039 0.039 10.00 2.42 0.095 0.012 8 2.000 27 2.68 0.17 1.851 5.30 5.1% 54 53 0.340 0.56 0.190 0.230 10.17 2.39 0.549 0.012 12 1.300 130 3.73 0.58 4.401 5.60 12.5% 53 52 0.620 0.56 0.347 0.577 10.75 2.31 1.332 0.012 12 0.500 27 3.44 0.13 2.729 3.47 48.8 52 51 0.060 0.56 0.034 0.610 10.88 2.29 1.399 0.012 12 1.730 86 5.43 0.26 5.077 6.46 27.6% 51 34 0.970 0.56 0.543 1.154 11-14 2.26 2.604 0.012 12 0.500 185 3.96 0.78 2.729 3.47 95.4% 50A 50 1.310 0.55 0.721 0.721 10.00 2.42 1.741 0.012 8 2.000 27 6.05 0.07 1.851 5.30 94.1 50 49 1.290 0.55 0.710 1.430 10.07 2.41 1 3.440 0.012 12 4.180 82 9.60 0.14 7.891 10.05 43.6% 49A 49 1.870 0.54 1.010 1.010 10.00 2.42 2.440 0.012 8 2.000 44 5.30 0_14 1.851 5.30 131.8% 49 47 0.210 0.56 0.118 2.557 10.22 2.38 6.098 0.012 12 4.090 215 11.03 0.32 7.806 9.94 78.1 48A 48 4.290 0.54 2.317 2.317 10.00 2.42 5.599 0.012 8 2.000 14 5.30 0.04 1.851 5.30 302.4% 48 47 0.150 0.56 0.084 2.401 10.04 2.41 5.786 0.012 12 1.370 27 5.75 0.08 4.518 5.75 128.1% 47 46 0.780 0.56 0.437 5.395 10.54 2.34 12.612 0.012 12 4.180 284 10.05 0.47 7.891 10.05 159.8% 46 45 1.010 0.56 0.566 9.046 11.01 2.27 20.573 0.012 12 4.650 122 10.60 0.19 8.323 10.60 247.2% 45A 45 0.600 0.56 0.336 0.336 10.00 2.42 0.812 0.012 8 2.000 28 5.07 0.09 1.851 5.30 43.9% 45 44 0.250 0,56 0.140 9.522 11.20 2.25 21.421 0.012 12 4.850 78 10.82 0.12 8.500 10.82 252.0% 44 43 0.280 0.56 0.157 9.679 11.32 2.23 21.628 0.012 12 6.090 65 12.13 0.09 9.525 12.13 227.1% 43A 43 0.830 0.56 0,465 0.465 10.00 2.42 1.123 0.012 8 2.000 27 5.58 0.08 1.851 5.30 60.7% 43 42 0.030 0.56 0.017 1 10.160 1 11.41 1 2.22 22.592 0.012 12 4.100 1 98 9.95 0.1 77.815 9,95 289.1% 42 41 0.350 0.49 0.172 1 10.332 1 11.58 2.20 22.768 0.012 12 4.530 1 77 10.46 0.12 8.215 10.46 277.2% CON. .r •,��1�tr�.l� 1.,1��� �L' iJ�1]t l� LOCATION: KING COUNTY 24-HR RAINFALL: 3.95 INCHES OB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 100 YEAR i siOCtt£b IiN 3AC5�5:�512UNi>P i i i i i;i;i;ij i;i;i;i;i;i;i;i; ii iiiiiii�i�i;;i i': :°: :i;i i''i ii i°:°'''' i''i!;i i i i!i is i i i i iiii ''i i i i i''':i;i i i;i i�i i[i ii:i:i:iE E i i i;''Ei:E:is i f i E i i''-`_"i'';; I F..,,, ,.,.•:,:,,, :.,•:,.,•:TIMCOF RAiNFA1t> T3tlBUfARX.......: ......:PIPE.. ..;.>!IRIi:;:;:.•:;PipE;:;.:;ACTUAL•.:•:•TRiYBL.....:PIPE:CAr k......SUMRIA$):::: i:. .:.: ...AREiS� 5i�5�i'CD$BRICI6N3�:1�5i�5i�i�55i1555i:i'"'•'`�''':i i'Si'.,.,.,,..:.�::�.;.'.:':':'':i;i;i;i::.;;.;.;i;i;i ip°.;:;';';';.;_;:;, :;''`;`;`;`;`;:`?ipE°;';;;';;,; ;,;,;,;;,;; ;iiiii;i >i;yi; :i '..;:;.;;;;: ;;;;; i'?'": ;;;..i.,:. 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A.....l,.,,.,... f.....1.. 41A 41 0.080 0.56 0.045 0.045 10.00 2.42 0.108 0.012 8 2.000 27 2.68 0.17 1.851 5.30 5.8% 41 40 0.780 0.46 0.359 10.735 11.70 2.19 23.500 0.012 12 3.100 120 8.65 0.23 6.796 8.65 345.8% 40A 40 0,430 0.56 0.241 0.241 10.00 2.42 0.582 0.012 8 2.000 27 4.61 0.10 1.851 5.30 31.4% 40 39 0.240 0.56 0.134 11,111 11.93 2.16 24.024 0.012 12 1,090 55 5.13 0.18 4.030 5.13 596.2% 39 37 0.000 0.56 0.000 12.991 12.64 2.09 27.087 0.012 18 6,630 185 18.90 0.16 29.301 16.58 92.4% 38 37 0.110 0.56 0.062 0.062 10.00 2.42 0.149 0.012 12 20.000 29 5.05 0.10 17.261 21.98 0.9% 37 36 0.600 0.56 0.336 20.609 12.80 2.07 42.624 0.012 24 5.000 177 19.19 0.15 54.801 17.44 77.8% 36 35 0.090 0.56 0.050 21.737 12.96 2.05 44.620 0.012 24 0.500 159 5.52 0.48 17.329 5.52 1 257.5% 35A 35 0.290 0.56 0.162 0.162 10.00 2.42 0.392 0.012 8 8.400 27 1 6.85 0.07 3.794 10.87 10.3% 35 34 0.340 0.56 0.190 22.090 13.44 2.01 44.316 0.012 24 5.160 124 19.67 0.11 55.671 17.72 79.6% 34 33 0.190 0.56 0.106 23.350 13.54 2.00 46.615 0.012 24 0.500 78 5.52 0.24 17.329 5.52 269.0% 33A 33 0.200 0.36 0.072 0.072 10.00 2.42 0.174 0.012 8 18.200 27 6.88 0.07 5.585 16,00 3.1% 33 32 0.040 0.56 0.022 23.444 13.78 1.97 46.297 0.012 24 0.500 157 5.52 0.47 17.329 5.52 267.2% 32A 32 0.400 0.23 0.092 0.092 10.00 2.42 0.222 0.012 8 9,200 27 5.74 0.08 3.971 1138 5.6% 32 15 0.080 0.56 0.045 23.581 14.25 1.93 45.585 0.012 24 12.420 38 27.77 0.02 86.370 27.49 52.8% STO_` CVI.I C: AN.0. K� LOCATION: KING COUNTY 24-IiR RAINFALL: 3.95 INCtIES JOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 100 YEAR INCRE]NB .'N3AL. ..RUNDBB. i:'�' ':p':'i '..F ME F..:::,. RAtNFAlf:i�i:T.iUBUTP:RY. :.: pE..:;:::::: / .....P� ...Y RE.•:�:::::PIPS.....ACTU 'V "A.. .A4..:;:;3'RA.,6L:. ..;�.:P[Pi✓.C...PACITY:SUMINARY::E:' IvT.i iiiii:?!iAREiiiiiiiii iii'0`j.:1;1.;.; r1..... D$ fi C BN7iii 555555i 5555i '' '`:�'i 55i'' '`-''"'"''"' E:':::':': ;:::'o:':':':':: '5 "'''°''''•'i :;:;:;:;:,i ```:i ii i i i i i i[5ii " ::.'. .........i. ...................... GVNC..,.,..,1NtENSITV. E14Cf$::YEL.Q!JJ :*.cj NU'rS). (FEE'ry. :' .CFT/SfEC) :{RERCBNT):.E. 31A 31 0.600 0.56 0.336 0.336 10.00 2.42 0.812 0.012 8 2.000 27 5.07 0.09 1.851 5.30 43.9% 31 29 0.010 0.56 0.006 0.342 10.09 2.40 0.821 0.012 12 4.300 190 6.42 0.49 8.004 10.19 10.3% 30A 30 0.970 0.56 0.543 0.543 10.00 2.42 1.313 0.012 8 2.000 15 5.73 0.04 1.851 5.30 70.9% 30 29 0,090 0.56 0.050 0.594 10.04 2.41 1.431 0.012 12 0.500 27 3.51 0.13 2.729 3.47 52.4% 29 27 0.230 0.56 0.129 1.064 10.58 2.33 2.481 0.012 12 4.600 198 9.01 0.37 8.278 10.54 30.0% 28A 28 1.020 0.56 0.571 0.571 10.00 2.42 1.380 0.012 8 2.000 15 5.83 0.04 1.851 5.30 74.6% 28 27 0.110 0.56 0.062 0.633 10.04 2.41 1,525 0.012 12 0.500 27 3.54 0.13 2.729 3.47 55.9% 27 25 0.570 0.56 0.319 2.016 10.95 2.28 4.602 0.012 12 4.800 83 10.98 0.13 8.456 10.77 54.4% 26A 26 0.940 0.56 0.526 0.526 10.00 2.42 1.272 0.012 8 2.000 14 5.73 0.04 1.851 5.30 68.7% 26 25 0.040 0.56 0.022 0.549 10.04 2.41 1.323 0.012 12 0.500 27 3.44 0.13 2.729 3.47 48.5% 25A 25 0.760 0.56 0.426 0.426 10.00 2.42 1.029 0.012 8 2.000 15 5.41 0.05 1.851 5.30 55.6% 25 24 0.040 0.56 0.022 3.013 11.07 2.27 6.828 0.012 12 4.700 218 11.83 0.31 8.368 10.65 81.6% 24A 24 0.750 0.56 0.420 0.420 10.00 2.42 1.015 0.012 8 2.000 13 5.41 0.04 1.851 5.30 54.8% 24 22 0.110 0.56 0.062 3.494 11.38 2.23 7.794 0.012 12 5.600 75 13.02 0.10 9.134 11.63 85.2% 23A 23 0.650 0.56 0,364 0.364 10.00 2.42 0.880 0.012 8 6.600 38 8.09 0.08 3.363 9.63 26.2% 23 22 0.320 0.56 0.179 0.543 10.08 2.40 1.306 0.012 12 0.500 27 3.41 0.13 2.729 3.47 47.9% 22 21 0.160 0.56 0.090 4.127 11.48 2.22 9.145 0.012 12 7.000 165 14.69 0.19 10.212 13.00 89.6% 21A 21 0.440 0.56 0.246 0.246 10.00 2.42 0.595 0.012 8 2.000 27 4.69 0.10 1.851 5.30 32.2% # �+y�✓1 1 't114 1:lalt!E � :\ LOCATION: KING COUNTY 24-TIR RAINFALL: 3.95 INCHES JOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 100 YEAR NCRE1f1:NTA:..:..,:,:RUNDU$:.:.:.::.:.:.... ...:•:. :.;.;.;.;.;.;..;.;FINtEOF,...1E+3NFA£f...;.TIABQTXRY,,,,, PIPE.•:::: PIPE...::.ACT:l.EkL•:: TRAYEI... CArPACITY:SUMMARY:::: T TYES CDTtF1ii E iL...:...V.. LG::?i:..k.:C::::::: ::',``` :::::: . TSUM ?T6).::..:.:.,i.:.;,:'!C"iiE:;.ii�i�i�:EA;.;E):::iE,:�;:LA:�:?�'3;::;YN1!NLkTTS):::;:;:(INMR)::::::::::::EQFS):::::::.......... ... .:f� S... ...1F.,..,.>.,....,E..........�..:. 21 19 0.230 0.56 0.129 4.502 11.66 2.19 9.875 0.012 12 0.610 54 3.84 Q23 3.015 3.84 327.6% 20A 20 0.190 0.56 0.106 0.106 10.00 2.42 0.257 0.012 8 2.000 27 3.53 0.13 1.851 5.30 13.9% 20 19 0.050 0.56 0.028 0.134 10.13 2.40 0.322 0.012 12 3.100 200 4.11 0.81 6.796 8.65 4.7% 19 18 0.480 0.56 0.269 4.906 11.90 2.17 10.626 0.012 18 0.940 130 7.12 0.30 11.033 6.24 96.3% 18A 18 1.840 0.42 0.773 0.773 10.00 2.42 1.868 0.012 8 2.000 27 6.05 0.07 L851 5.30 100.9% 18 17 0.430 0.56 0.241 5.919 12.20 2.13 12.619 0.012 18 0.500 100 4.55 0.37 8.047 4.55 156.8% 17 16 0.600 0.56 0.336 6.255 12.57 2.09 13.089 0.012 18 0.500 135 4.55 0.49 8.047 4.55 162.7% 16 15 0.020 0.56 0.011 6.266 13.06 2.04 12.798 0.012 18 0.500 60 4.55 0.22 8.047 4.55 159.0% 15 14 0.160 0.56 0.090 29.937 14.28 1.93 57.814 0.012 30 0.500 140 6.40 0.36 31.420 6.40 184.0 14 13 0.460 0.56 0.258 30.194 14.64 1.90 57.392 0.012 30 0.500 54 6.40 0.14 31.420 6.40 182.7% 13 12 0.410 0.56 0.230 30.424 14.78 1.89 57.482 0.012 30 0.500 42 6.40 0.11 31.420 6.40 182.9% 12A 12 0.390 0.56 0.218 0.218 10.00 2.42 0.528 0.012 8 8.700 27 7.36 0.06 3.861 11.06 13.7% 12 11 0.240 0.56 0.134 30.777 14.89 1.88 57.879 0.012 30 0.500 149 6.40 0.39 31.420 6.40 194.2% it 3 0.390 0.56 0.218 30.995 15.28 1.85 57.353 0.012 30 0.800 73 8.10 0.15 39.744 1 8.10 144.3% 10 9 1.370 0.25 0.343 0.343 10.00 2.42 0.828 0.012 12 2.200 55 5.07 0.18 5.725 7.29 14.5°% 9 8 0.210 0.56 0.118 0.460 10.18 2.39 1.099 0.012 12 3.000 138 6.17 0.37 6.685 8.51 16.4% 8A 8 0.330 0.56 0.185 0.185 10.00 2.42 0.447 0.012 8 2.000 27 4.35 0.1.0 1.851 5.30 24.1% 8 7 0.450 0.56 0.252 0.897 10.55 2.34 2.095 0.012 12 15.270 44 12.77 0.06 15,083 19.20 13.9% EA 7 0,300 0.56 0.168 0.409 11.19 2.25 0.920 0.012 12 17.100 23 10.26 0.04 15.961 20.32 5.8% ST .RI' (. �j_ y �i 7� f �7 ........w L.L, � ..l .Y.sTE:1)F, TI�:.:.:.:.:.:.:.:.:. LOCATION: KING COUNTY 24-HR RAINFALL: 3.95 INCHES .IOB NAME: MAPLEWOOD PARCEL JOB NUMBER: 94168 PREPARED BY: GRB DESIGN STORM: 100 YEAR ..NCR�MEN`FA '�:�:�:RUNO:Fp. .i`'i�i i i i i i i i i i i i i i i ii5.•t.•i.i..i.ii•TIR7E O!F.i.i is RAiiE 1`I F:AL 3'...i; T[21aU`T:ARXi,.4 " ....... ":: ``..... 5i i i' ' i " '` : :. ... :I'rE':rC'AP:"A I FFI •iP YBSBF:riIENT. ..AR6Ai�i�iiE'�E�:COiE..GIE•�T'� `�'`: ;� .................:.:................................................:........::.:: :.BIINFQFi iii?EE)NC;i.,.:_NTENSF..,.,_..._..FGOW;.,.,..,iN�iNNIT*.f.5,..DfA3N1;TER::.;.St?J,T$.;:;;LE1V:C.K7.1.[;.V.ELOCITY��.�.�.YIMFi�.�.��:�..�FIILL.�..V(f'UY•4)� ACI' � Ff3L� ::i: PRPM! ::;:T11i;` :'::`•<tAC>?i S)i `:i i 5::.: !:i:::::: A:L1::::::fA 11?yICES:..;.;.1Vr.H f....... ... .::.t�!..... ...E ..Rl..: ::::;aces) ::: .1ENN� ..f. ltclm:aFE&!3:;;: : :m+,Nur�sJ:::.:(E�sc� rstapr Ac>Hr�:;:;:; 7 6 0.020 0.56 0.011 1.317 11.23 2.25 2.959 0.012 12 0.500 78 3.47 0.37 2.729 3.47 108.4% 6A 6 0.170 0.56 0.095 0.095 10.00 2.42 0.230 0.012 8 17.500 27 7.45 0.06 5.476 15.69 4.2% 6 5 0.390 0.56 0.218 1.631 11.60 2.20 3.588 0.012 12 0.500 200 3.47 0.96 2.729 3.47 131.5% 5A 5 0.540 0.56 0.302 0.302 10.00 2.42 0.731 0.012 8 8.800 27 8.40 0.05 3.883 11.13 18.8% 5 4 0.560 0.56 0.314 2.247 12.56 2.09 4.703 0.012 12 0.500 200 3.47 0.96 2.729 3.47 172.3% 4A 4 0.550 0.56 0.308 0.308 10.00 2.42 0.744 0.012 8 2.000 27 4.99 0.09 1.851 5.30 40.2% 4 3 0.570 0.56 0.319 2.874 13.52 2.00 5.743 0.012 12 0.500 132 3.47 0.63 2.729 3.47 210.4% 3A 3 0.540 0.56 0.302 0.302 10.00 2.42 0.731 0.012 8 2.000 27 4.93 0.09 1.851 5.30 39.5% E23 2 0.520 0.56 0.291 34.462 15.43 1.84 63.377 0.012 30 0.900 132 8.59 0.26 42.155 8.59 150.3% 2A 0.000 0.56 0.000 34.462 15.69 1.82 62.722 0.012 30 11.800 63 29.23 0.04 152.640 1 31.10 41.1°% ' KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL ' FIGURE 4.3.4D BACKWATER CALCULATION SHEET NOTES Column(1) - Design flow to be conveyed by pipe segment. Column(2) -Length of pipe segment. ' Column(3) - Pipe Size; Indicate pipe diameter or span x rise. Column(4) - Manning's'n value. Column(5) - Outlet Elevation of pipe segment. Column(6) -Inlet Elevation of pipe segment. Column(7) -Barrel Area Is the full cross sectional area of the pipe. Column(8) -Barrel Velocity Is the full velocity In the pipe as determined by: V = O/A or Col.(6) = Col.(1) /Col.(7) Column(9) -Barrel Velocity Head = V2/2g or (Col.(8))2/2g Where, g = 32.2 ft/sec2 (acceleration due to gravity) Column (10)-Tallwater(1W) Elevation;this is the water surface elevation at the outlet of the pipe segment. If the pipe's outlet Is not submerged by the TW and the TW depth Is less than(D+Q/2,set the TW elevation equal to(D+dj/2 to keep the analysis simple and still obtain reasonable results(D = ' pipe barrel height and d, = critical depth,both in ft. See Figure 4.3.58 for determination of old. Column(11)- Friction Loss = S,x L or S,x Col.(2) (7 Where, S,Is the friction slope or head loss per lineal toot of pipe as determined by Manning's Equation expressed in the form: ' S, = (nV)2/2.22 R`" Column(12)a Hydraulic Grade Line(HGL)Elevation just inside the entrance of the pipe barrel;this is determined by adding the friction loss to the TW elevation: ' Col.(12) = Col.(11) + Col.(10) If this elevation falls below the pipe's inlet crown,fl no longer represents the true HGL when computed In this manner. The true HGL will fall somewhere between the pipe's crown and either normal flow depth or critical flow depth,which ever is greater. To keep the analysis simple and ' still obtain reasonable results(ie,erring on the conservative side),set the HGL elevation equal to the crown elevation. Column(13)- Entrance Head Loss = K.x V2/2g or K.x Col.(9)Where, K. = Entrance Loss Coefficient(from Table 4.3.5A) This is the head lost due to flow contractions at the pipe entrance. Column(14) - Exit Head Loss = 1.0 x V2/2g or 1.0 x Col.(9) This is the velocity head lost or transferred downstream. Column(15) - Outlet Control Elevation = Col.(12) + Col.(13),+ Col.(14) This is the maximum headwater elevation assuming the pipe's barrel and inlet/outlet characteristics are controlling capacity. It does not include structure losses or approach velocity considerations. Column(16)- Inlet Control Elevation(See Section 4.3.5 for computation of inlet control on culverts). This is the ' maximum headwater elevation assuming the pipe's inlet is controlling capacity. It does not include structure losses or approach velocity considerations. Column(17)-Approach Velocity Head;this is the amount of head/energy being supplied by the discharge from an upstream pipe or channel section,which serves to reduce the headwater elevation. If the ' discharge is from a pipe,the approach velocity head is equal to the barrel velocity head computed for the upstream pipe. If the upstream pipe outlet Is significantly higher In elevation(as in a drop manhole)or lower in elevation such that its discharge energy would be dissipated,an approach velocity head of zero should be assumed. ' Column(18)- Bend Head Loss = K,x V2/2g or K,x Col.(17) Where, K, = Bend Loss Coefficient(from Figure 4.3.4E) This is the loss of head/energy required to change direction of flow in an access structure. Column(19)-Junction Head Loss;this Is the loss In head/energy which results from the turbulence created ' when two or more streams are merged into one within the access structure. Figure 4.3.4F can be used to determine this loss or ft can be computed using the following equations derived from Figure 4.3.4F: Junction Head Loss = K,,x V2/2g or ICt x Col.(17) ' Where, Vt is the Junction Loss Coefficient determined by: N _ (Q3/G,)/(1.18 + 0.63(Ga/QJ) Column (20)- Headwater(HW)Elevation;this is determined by combining the energy heads in Columns 17, 18, and 19 with the highest control elevation in either Column 15 or 16,as follows: Col.(20) - Col.(115 or 16)-W.(17) + Col.(18) + Col.(19) 4.3.4-21 1/90 OB NUMBER: 94168_ DESIGN STORM: 25 YEAR ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND 3IJNCTION PIPE PIPE hLANNING'S OUTLET INLET PIPE FLOW VELOCITY TAILWATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY HEAD HEAD HEADWATER 1;1 FLOW LENGTII DIA. n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION CB (CFS) (FEE al I VALUE (FEET) (FEET) (SO FT) (FT/SEC) (FEET) (FEET) (FEET) FEE FEE T) ( (FEET) (FEET) FEE (FEET) (FEET) (FEET) (FEET) Rlh1 EL 2A 2 30.29 0 01012 391.00 395.00 4,91 6. ). 9 -0.29 399.48 0.30 0.59 400.37 398.119 0.49 0.0 400.26 4 324 2 3 30.29 132 30 0,012 395.00 398.00 4,91 6.17 0.59 400.26 0.61 400.87 0.30 0.59 401.76 400.50 0.21 0.78 0.33 402.66 405.20 2.54 0.00 3 3A 0.62 27 12 0.012 399,50 402.16 0.79 0.79 0.01 402.66 0.01 403.16 0.00 0.01 403.17 403.16 0.00 0.00 0.00 403.17 405.20 2.03 0.00 3 4 2.8 132 12 0.012 399.50 402.28 0.79 3.65 0.21 402.66 0. 2 403.38 0.10 0.21 403.69 403.47 0.21 0.01 0.03 403.53 406.27 2.74 0.00 4 4A 0.63 27 12 0,012 402.28 402.82 0.79 0.80 0.01 403.53 0.01 403.82 0.01 0.01 403.94 403.82 0.00 0.00 0.00 403,84 406.27 2.43 0.00 4 5 2.97 200 12 0.012 402.28 403.28 0.79 3.65 0.21 403.53 1.09 404.63 0.10 0.21 404.94 404.49 0.21 0.00 0.03 404.77 408.67 3.90 0.00 5 5A 0.62 7 12 0.012 403.28 405.66 0.79 0.79 0.01 404.77 0.01 406.66 0.00 0.01 406.67 406.66 0,00 0.00 0.00 406,67 408,67 2.00 0.00 5 6 2.87 200 12 0.012 403.28 40428 0.79 3.65 0.21 404.77 1.09 405.86 0.10 0.21 406.17 405.28 0.16 0.02 0.01 406.04 412.01 5.97 0.00 6 6A 0.20 27 12 0.012 404.28 409.01 0.79 0.25 0.00 406.04 0.00 410.01 0.00 0.00 410.01 410.01 0.00 0.00 0.00 410.01 412.01 2.00 0.00 6 7 2.51 78 12 0.012 404.28 404.67 0,79 3.20 0,16 406.04 0.33 406.37 0.08 0.16 406.61 405.67 0.08 0.06 0.05 406.63 413,97 7.34 0.00 7 7A 0.78 58 12 0.012 404.67 407.11 0.79 0.99 0.02 406.63 0.02 408.11 0.01 0.02 408.13 408.11 0.01 0.00 0.00 408.13 413.50 5.37 0.00 7 8 1.78 44 12 0,012 404.67 411.39 0.79 2.27 0.08 406.63 0.09 1 412.39 0.04 0.08 412.51 412.39 0.02 0.02 0.02 412.53 414,96 2.43 0.00 8 8A 0.38 7 12 0,012 411.39 411.93 0.79 0.48 0.00 412.53 0.00 412.93 0.00 0.00 412.94 412.93 0.00 0.00 0.00 412.94 414.96 2.02 0.00 8 9 0.94 138 12 OAl2 411.39 415.53 0.79 1.20 0.02 412.53 0.08 416.53 0.01 0.02 416.56 4I6.53 0.01 0.00 0.00 416.55 418,56 2.01 9 10 0.71 55 12 0,012 415.53 416.7r 0.79 0.90 0.01 416.55 0.02 417.74 0.01 0.01 417.76 417.74 0.00 .00 0.00 417.76 419.74 1.98 0.00 3 11 30.29 73 30 0.012 398.00 399.99 4.91 6.17 0.59 402.66 0.34 403,00 0.30 0.59 403.89 403.15 0.59 0.05 0.00 403.35 405.60 2.25 11 12 30.29 149 30 0,012 1 399.99 400.94 4.91 6.17 0.59 403.35 0.69 404.03 0.30 0.59 404.92 404.12 0.59 0.06 0.01 404.40 408.29 3.89 0.00 12 12A 0.45 7 12 0.012 402.44 405.29 0.79 0.57 0.01 404.40 0.00 406.29 0.00 0.01 40b.30 406.29 OAO 0.00 0.00 406.30 408.29 1.99 ' 1 0.00 12 13 3029 42 30 0,012 400,94 401.15 4.91 6.17 0.59 404. 00 0.19 404.59 0.30 0.59 405A8 404.33 0.59 0.13 0.00 405.02 409.01 3.99 13 14 30.29 54 30 0.012 401.15 401.42 1 4.91 6.17 0.59 405.02 0.25 405.27 0.30 0.59 406.15 404.60 0.59 0.17 0.00 405.73 409.95 4.22 14 1 15 1 30.29 140 30 0.012 401.42 402.12 4.91 6.17 0.59 405.73 0.65 406.37 0.30 0.59 407.26 404.62 0.94 0.19 0.11 406.62 412,65 6,03 0.00 15 16 6.22 60 18 0.012 403.12 403.92 1.77 3.52 0.19 406,62 0.18 406.80 0.10 0,19 40T09 405.42 0.19 0.02 0.00 406.92 412.63 5.71 16 17 6.22 1 5 18 0.012 403.92 404.59 1.77 3.52 0.19 406.92 0.40 407.32 0.10 0.19 1 407.61 406.09 0.19 1 0.04 0.00 407.45 409.93 2.48 17 18 6.22 100 18 0,012 404.59 405.09 1.77 3.52 0.19 407.45 0.30 407.75 0.10 0.19 408.04 406.59 0.19 0.02 0.04 407.90 409.13 1.23 _ 0.00 18 18A 1.59 27 12 0,012 405.59 406.13 0.79 2.02 0.06 407.90 0.05 407.94 0.03 0.06 408.04 407.13 0,00 0.00 0.00 408.04 409.13 1.00 0.00 18 19 6.22 130 18 0,012 405.09 406.31 1.77 3.52 0.19 407.90 1 0.39 408.28 1 0.10 0.19 408.57 407.81 0.50 0.25 0.01 408.34 410.57 2.23 0.00 19 20 0.27 200 12 0.012 406.81 413.01 0.79 0.34 0.00 408.34 0.01 414.01 0.00 0.00 414.01 414.01 0.00 0.00 0.00 414.01 416.55 2.54 20 20A 0.22 27 12 0,012 413.01 413.55 0.79 0.28 0.00 414.01 0.00 414.55 0.00 0.00 414.55 414.55 0.00 0.00 0.00 414.55 416.55 2.00 0.00 19 21 4.44 54 12 0.012 406.91 407.14 0.79 5.65 0.50 408.34 0.71 409.05 0.25 0.50 40979 409.08 0.50 0.02 0.05 409.36 410,70 1,34 0.00 21 21A 0.51 27 12 O,012 407.14 407.68 0.79 0.65 1 0.01 409.36 0.00 409.36 0.00 0.01 409.37 408.68 0.00 0.00 0.00 409,37 410.70 1.33 0.00 21 22 4.44 165 12 0.012 407.14 41&69 0.79 5.65 0.50 409.36 2.16 419.69 0.25 0.50 420.44 420.60 0.50 0.05 0.09 420.24 421.87 1.63 0.00 22 23 1.11 27 12 0.012 418.69 418.83 0.79 1.41 0.03 420.24 0.02 420.26 0.02 0.03 420.31 419.83 0.01 0.02 0.00 420,32 421,87 1.55 23 23A 0.75 38 12 0,012 418.83 420.34 0.79 0.95 0.01 420.32 0.01 421.34 0.01 0.01 421.36 421.34 0.00 0.00 0.0 421.36 424.371 3.01 0.00 22 24 4.44 75 12 0.012 418.69 422.89 0.79 5.65 0.50 420.24 0.98 423.89 0.25 0.50 424.64 424.80 0.50 0.03 0.07 424.42 42594 1.52 0.00 'ER C-ALCUMIONS Is NAME: MAPLE"'UUD FARUEL PREPARED BY: G.Broom OB NUMBER: 94168 DESIGN STORM: 25 YEAR ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND JUNCTION PIPE PIPE MANNING'S OUTLET INLET PIPE FLOW VELOCITY TAILR'ATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY" HEAD HEAD HEADWATER FROM TO FLOW LENGTH DIA. n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION CB CB (CFS) (FELT) (IN) VALUE (FEET) (FEET) (SQ FT) (FT/SEC) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) RIM EL 24 24A 0.87 13 12 0.012 422.89 423.15 0.79 1.11 0.02 424.42 0.01 424.42 0.01 0.02 424.45 424.15 0.00 0.00 0.00 424.45 426,74 2.29 0.00 24 25 4.44 218 12 0.012 422.99 433.14 0.79 5.65 0.50 424.42 2.86 434.14 0.25 0.50 434.89 434.77 0.38 0.05 0.11 434.66 436.27 1.61 0.00 25 25A 0.88 15 12 0.012 433.14 433.44 0.79 1.12 0.02 434.66 0.01 434.67 0.01 0.02 434.69 434.44 0.00 0.00 0.00 434.69 437,04 2.35 0.00 25 26 1.13 27 12 0,012 433.14 433.27 0.79 1,44 0.03 434.66 0.02 434.68 0.02 0.03 434.73 434.27 0.03 0.00 0.00 434.70 436,27 1.57 26 26A 1.08 14 1 12 0,012 433.27 433.55 0.79 1.38 0.03 434.70 0.01 434.71 0.01 1 0.03 434.76 434.55 0.00 1 0.00 0.00 434.76 436.57 1 1.81 0.00 25 27 3.90 83 12 0,012 433.14 437.12 0.79 4.97 0.38 434.66 0.94 438.12 0.19 0.38 438.70 438.12 0.11 0.04 0,15 438.77 440.31 1.54 0.00 27 28 1.30 27 12 0,012 437.12 437.26 0.79 1-66 0.04 438.77 0.03 438.80 0.02 0.04 438.87 438.26 0.01 0.02 0.00 438.88 440.31 1.43 28 28A 0.52 15 12 0,012 437.26 437.56 0.79 0.66 0.01 438.88 0.00 438.98 0.00 0.01 38.89 438.56 0.00 0.00 0.00 438.89 441,08 2.19 0.00 27 29 2.11 198 12 0,012 437.12 446.23 0.79 2.69 0.11 439.77 0.59 447.23 0.06 0.11 M455.42 447.23 0.01 0.00 0.09 447.47 449.76 2.29 - 0.00 29 30 1.22 27 12 0.012 446.23 446.37 0.79 1.55 0.04 447.47 0.03 447.50 0.02 0.04 447.37 0.03 0,00 0.00 447.53 449.76 223 30 30A 1.12 15 12 0.012 446:37 446.67 0.79 1.43 0.03 447.53 0.01 447.67 0.02 0.03 447.67 0.00 0.00 0,00 447.72 450.25 2.53 0.00 29 31 0.70 190 12 0.012 446.23 454.40 0.79 0.89 0.01 447.47 0.06 455.40 0.01 0.01 455.40 0.01 0.02 0.00 455.43 457,94 2.51 31 31A 0.52 27 12 0,012 454.40 454.94 0.79 0,66 0.01 455.43 0.00 455.94 0.00 0.01 455.94 0.00 0.00 0.00 455.95 457,94 1.99 0.00 15 32 24.43 38 24 0.012 402.62 407.84 3.14 7.78 0.94 406.62 0.37 409.84 0.47 0.94 411.25 411.45 0.94 0.38 0.01 410.89 414.33 3.44 0.00 32 32A 0.19 27 12 0.012 408.84 411.32 0.79 0.24 0.00 410.89 0,00 412.32 0.00 0.00 412.32 412.32 0.00 0.00 0.00 412.32 414.33 2.01 0.00 32 33 24.43 157 24 0.012 407.8-1 408.62 3.14 7.78 0.94 410.89 1.55 412.44 0.47 0.94 413.85 412.04 0.81 0.10 0.01 413.34 41754 4.40 0.00 33 33A 0.15 7 12 0.012 409.62 414.53 0.79 0.19 0.00 413.14 0.00 41553 0.00 0,00 415.53 415.53 0.00 0.00 0,00 415.53 417.54 2.01 0.00 33 34 22.73 78 24 0.012 408.62 409.01 3.14 7.24 0.81 413.14 0.67 413.81 0.41 0.81 415.03 412.43 0.91 0.07 0.03 414.32 419,12 4.80 0.00 34 35 22.73 124 24 0,012 409.01 415.41 3.14 724 0,81 414.32 1.06 417.41 0.41 0.81 418.63 418.78 0.81 0.00 0.01 417.98 42I.70 3.72 0.00 35 35A 0.33 7 12 0,012 416.41 418.68 0.79 0,42 0.00 417.98 0.00 419.68 0.00 0.00 19,68 419.68 0.00 0.00 0.00 419.68 421,70 2.02 0.00 35 36 22.73 159 24 0,012 415.41 416.20 1 3.14 7.24 0.81 417.98 1.36 419,34 0.41 0.81 420.56 419.23 0.66 0.03 0.04 419,96 425.17 5.21 0.00 36 37 20.48 177 24 0,012 416.20 417.08 3.14 6.52 0.66 419.96 1.23 421.19 0.33 0.66 4 2.18 419.08 1,42 0.05 0.30 421.11 429.11 8.00 0.00 37 38 0.13 29 12 0,012 418.08 423.88 0.79 0.17 0.00 421.11 0.00 424.88 0.00 0.00 424.88 424.88 0,00 0.00 0.00 424.88 429.23 4.35 0.00 37 39 11.73 185 15 0,012 417.83 430.10 1.23 9.56 1.42 421.11 5.15 431.35 0.71 1 A2 433.48 435.45 1.00 0.00 0.00 432.48 433.40 0.92 0.00 39 40 9.84 55 15 0,012 430.10 430.70 1.23 8.02 1.00 432.48 1.08 433.56 0.50 1.00 435.06 434.09 1.00 0,03 0.04 434.13 434,59 0.46 0.00 40 40A 0.50 27 12 0.012 430.95 431.49 0.79 0.64 0.01 434.13 0.00 434.13 0.00 0.01 434.14 4.2.49 0.00 0.00 0.00 434.14 1 434,59 0.45 0.00 40 41 9.94 120 15 0,012 430.70 434.42 1.23 8.02 1.00 4-14.13 2.35 436.48 0.50 1.00 437.98 43 .80 1.00 0.19 0.01 437.18 438.21 1.03 0.00 41 41A 0.09 27 12 0.012 434.67 435.21 0.79 0.11 0.00 437.18 0.00 fl447.14 0.00 0.00 437.18 436.21 0.00 0.00 0.00 437.18 438.21 1.03 0.00 41 42 9.84 77 15 0.012 434.42 437.91 1.23 8.02 1.00 437.18 1.51 0.50 1.00 440.66 441.28 1.00 0.28 0,00 440.56 441.21 0.65 42 43 9.84 98 15 0,012 437.91 441.93 1.23 8.02 1.00 440.56 1.92 0.50 1.00 444.68 445.30 1.00 .10 0.04 444.44 445.72 1.28 0.00 43 43A 0.52 7 12 0,012 442.18 442.72 0.79 0.66 0.03 444.44 0.00 0.00 0.01 4"4 46 443.72 0.00 0.00 0.00 444.46 445.72 1.26 0.00 43 44 9.84 65 15 0.012 441.93 15.89 1.23 8.02 1.00 444.44 127 0,50 1.00 448.64 449.25 1.00 0.22 0.00 448.47 449.16 0.69 44 45 9.84 78 15 0.012 445.89 449.67 1.23 8.02 1,00 448.47 1.53 450.92 0.50 1.00 452.42 453.04 1.00 0.20 0.04 452.28 453.21 0.93 WEL B INAML. MD FM PREPARED BY: G.Brooks OB NUMBER 94168 DESIGN STORM: 25 YEAR ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND JUNCTION PIPE PIPE MANNING'S OUTLET INLET PIPE FLOW VELOCITY TAILWATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY HEAD HEAD HEADWATER FROM TO E LENGTH DIA. n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION CB CB (FEET) (I VALUE (FEET) (FEET) (SQ FT) (FT/SEC) (FEET) (FEET) (FEET) FEE (FEET) (FEET) FEE FEE (FEET) (FEET) (FEET) (FEET) RIM EL 0.00 45 45A 0.52 28 12 0.012 449.92 450.48 0.79 0.66 0.01 452.28 0.01 452.29 0.00 0.01 452.30 451.48 0,00 0.00 0.00 452.30 453 48 1.18 0.00 45 46 9.94 122 15 0,012 449.67 455.34 1.23 8.02 1.00 452.28 2.39 456.59 0.50 1.00 458.09 458.20 0,80 0.02 0.00 457.42 458.77 1.35 0.00 46 4 8.80 294 15 0.012 455.34 467.21 1.23 7.17 0.80 457.42 4.45 468.46 0.40 0.80 469.66 468.46 0.05 0.00 0.81 470.42 470.70 0.28 0.00 47 48 4.93 27 1 15 0,012 467.45 467.82 1.23 4.02 1 0.25 470.42 0.13 470.55 0.13 1 0.25 470.93 469.07 0.23 0.02 0.00 470.71 471.20 0.49 48 48A 4.77 12 15 0.012 467.82 468.10 1.23 3.89 0,23 470.71 0.06 470.76 0.12 0.23 471.12 469.35 0.00 0.00 0.00 471.12 471.60 0.48 0.00 47 49 1.47 215 12 0.012 467.45 476.25 0.79 1.87 0.05 470.42 0.31 477,25 0.03 0.05 477.33 477.25 0.05 0.00 0.03 477.31 479.73 2.42 0.00 49 49A 1.47 44 12 0.012 476.25 477.13 0.79 1.87 0.05 477.31 0.06 478.13 0.03 0.05 478.21 478.13 0.00 0.00 0.00 479.21 480.13 1.92 0.00 49 50 1.47 82 12 0.012 476.25 479.68 0.79 1.87 0.05 477.31 0.12 480.68 0.03 0.05 480.76 480.68 0.05 0.07 1 0.00 480.78 483.22 2.44 50 50A 1.47 27 12 0,012 479.68 480.22 039 1.87 0.05 480.78 0.04 481.22 0.03 0.05 491.30 481.22 0.00 0.00 0.00 481.30 483.22 1.92 0.00 34 51 1.16 185 12 0.012 410.01 410.96 0.79 1.48 0.03 414.32 0.17 414.48 0.02 0.03 TI4.53 411.96 0.03 0.04 0.00 414.54 415.00 0.46 51 52 1.16 80 12 0,012 410.96 4I2.24 0.79 1.48 0.03 414.54 0.07 414,62 0.02 0.03 414.67 413.24 0.03 0.01 0.00 414.64 415.59 0.95 52 53 L13 27 12 01012 412.24� 412.56 0.79 1.44 0.03 414.64 0.02 414.67 0.02 0.03 414.71 413.56 0.01 0.04 0.00 414.75 415.59 0.94 53 54 0.4 130 12 0,012 412.56 414.25 0.79 0.60 0.01 414.75 0.02 415.25 0.00 0,01 415.26 415.25 D.00 0.01 0.00 415.27 417,81 2.54 54 54A 0.08 7 12 0,012 414.25 414.79 0.79 0.10 0.00 415.27 0.00 415,79 0.00 0.00 415.79 415.79 0.00 0.00 0.00 415.79 417.81 2.02 0.00 36 55 1.09 65 1 12 0,012 417.20 420.44 0.79 1.39 0.03 419.90 0.05 421.44 0.01 0.03 421.48 421.44 0.03 0.04 0.00 421.49 424.07 2.58 55 56 1.09 27 12 0.012 420.44 420.57 0.79 1.39 0.03 421.49 0.02 421.57 0.01 0,03 421.61 421.57 0.02 0.04 0.00 421.64 424.07 2.43 56 57 0.78 150 12 0,012 420.57 423.87 0.79 0.99 0.02 421.64 0.06 424.87 0.01 0.02 424.89 424.87 0.00 0.00 0.00 424.89 428.50 3.61 0.00 37 58 8.75 124 24 0,012 1 417.08 417.75 3.14 2.79 0.12 421.11 0.16 421.27 0.06 0.12 421.45 419.75 0.12 0.08 0.00 421.41 430.00 8.59 58 59 8.75 124 24 0,012 417.75 418.37 3.14 2.79 1 0.12 421.41 0.16 421.57 0.06 0.12 4 1.75 420.37 0.38 0.16 0.00 421.52 424.001 2.48 59 60 8.75 85 18 0.012 418.8^ 419.34 1.77 4.95 0.38 421.52 0.50 422.02 0.19 1 0.38 422.59 421.32 0.38 0.14 0,03 1 422.39 425,06 2.67 0.00 60 60A 0.75 27 12 0.012 419.94 422.05 0.79 0.95 0.01 422.39 0.01 423.05 0.01 0.01 423.07 423.05 0.00 .00 0.00 423,07 425.06 1.99 0.00 60 61 &75 70 18 0,012 419.34 419.69 1.77 4.95 0.38 422.39 0.41 422.80 0.19 0.38 42337 421.67 0.39 0.03 0.00 423.02 426.54 3.52 61 62 8.75 162 18 0,012 419.69 420.50 1.77 4.95 0.38 423.02 0.95 423.97 0.19 0.38 424.54 422.00 0.21 0.05 0.02 424.39 426.57 2.18 0.00 62 1 62A 0.31 27 12 0,012 421.00 423.57 0.79 0,39 0.00 424.39 0.00 424.57 0.00 0.00 42457 424.57 0,00 0.00 0.00 424.57 426,57 2.00 0.00 62 63 6.45 66 18 0,012 420.50 420.83 1.77 3.65 0.21 424.39 0.21 424.60 0.10 0.21 424.91 422.33 0.21 0.27 0.01 424.99 427.86 2.87 0.00 63 64 0.45 30 12 0,012 421.33 424.64 0.79 0.57 0.01 424.99 0.00 425.64 0.00 0.01 425.65 425.64 0.00 0.01 0.00 425.65 428.54 2.89 64 64A 0.26 45 12 0.012 1 424,64 425.54 0.79 0.33 0.00 425.65 0.00 426.54 0.00 0.00 426.54 426.54 0.00 0.00 0.00 426.54 428.54 2.00 0.00 63 65 6.45 110 18 0,012 420.83 421.38 1.77 3.65 0.21 424.99 0.35 425.34 0.10 0.21 425.65 422.88 0.21 0.00 0.01 425.45 426,10 0.65 0.00 65 65A 0.32 48 12 0,012 421.88 423.10 0.79 0.41 0.00 425.45 0.00 425.46 1 0.00 0.00 425.46 424.10 0,00 0.00 0.00 425.46 426.10 0.64 0.00 65 66 6.45 109 18 0.012 421.38 421.93 1.77 3.65 0.21 425.45 0.35 425.80 0.10 021 426.11 423.43 0.43 0.27 0,00 425.96 427.23 1.27 0.00 66 67 0.10 51 15 0,012 422.18 422.43 1.23 0.08 0.00 425.96 0.00 425.96 0.00 0.00 425.96 42 . 88 0.00 0.00 0.00 425.96 426.09 0.13 67 67A 0.05 27 12 0.012 422.68 423.22 0.79 0,06 0.00 425.96-' 0.00 425.96 0.00 0.00 425.96 424.22 0,00 0.00 0.00 425.96 426,09 0.13 0.00 66 68 6.45 74 15 0.012 422.18 425.11 1.23 5.26 0.43 425.96 0.62 426.58 0.21 0.43 427.22 427.02 0.43 0.57 0.00 427.37 428.88 1.51 0.00 68 68A 0.08 27 12 0.012 425.44 425.67 039 0.10 0.00 427.37 0.00 427.37 0.00 0.00 427.37 426.67 0.00 0.00 0,00 427.37 428.88 1.51 0.00 68 69 6.45 198 15 .012 425.11 429.49 1.23 5.26 0.43 427.37 1,67 430.74 0.21 0.43 431.38 431.41 043 .00 0.00 430.99 433.28 2.29 0.00 69 69A 0.08 7 12 0,012 429.49 430.28 0.79 0.10 0.00 430.99 0.00 431.28 0.00 0.00 431.28 431.28 0.00 0.00 0.00 431.28 433.28 2.00 , OB NUMBER: 94168 DESIGN STORM: ro0 25 YEAR ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND JUNCTION PIPE PIPE MANNING'S OUTLET INLET PIPE FLOW VELOCITY TAILWATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY HEAD HEAD HEADWATER FROM TO FLOW LENGTH D1A. n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION CB CB (CF (FEET) (IN) VALUE (FEED (FEET) (SQ FT) (FT/SE (FEET) (FEET) FEE(FEE T) T) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) RI11I EL 0.00 69 70 6.45 200 15 0.012 429.49 432.22 1,23 5.26 0.43 430.99 1.68 433.47 0.21 0.43 434.11 433.47 0.21 0.00 0.01 433,91 437.12 3.21 0.00 70 70A 0.07 27 12 0,012 432.47 433.94 0.79 0.09 0.00 433.91 0,00 434.94 0.00 0.00 434.94 434.94 0.00 0.00 0.00 434.94 437,12 2.18 0.00 70 71 4.55 109 15 0.012 432.22 433.92 1.23 3.71 0.21 433.91 0.46 435.17 0.11 0.21 435.49 435.17 0.52 0.28 0.06 435.31 439.15 3.84 0.00 71 71A 0.07 150 12 0.012 434.17 436.73 0,79 1 0.09 0.00 435.31 0.00 437.73 0.00 0.00 437.73 437.73 0,00 0.00 0.00 1 437.73 439.15 1.42 '71A 72 1.9 0.00 172 12 0,012 436.73 441.67 0.79 2.48 0.10 437.73 0.43 442.67 0.05 0.10 442.81 442.67 0.00 0.00 0.05 442.87 445.53 0.00 0.00 72 72A 0.08 27 12 0,012 441.67 442.21 0.79 0.10 0.00 442.87 0.00 443.21 0.00 0.00 443.21 44321 0.00 0.00 0.00 443.21 445.53 2.32 0.00 0.00 39 74 1.89 55 12 0,012 430.35 430.79 0.79 2.41 0.09 432.48 0.13 432.61 0.05 0.09 :432.67 431.79 0.09 0.00 0.01 432.67 434.48 1.81 0.00 74 74A 0.1 32 12 0,012 43779 431.43 0,79 0.19 0.00 432.67 0.00 432.67 0.00 0.00 432.43 0.00 0.00 0.00 432.67 434.23 1.56 0.00 74 75 1.89 170 12 0.012 430,E 432.15 0.79 2,41 0.09 432.67 0.40 433.15 0.05 0.09 433.15 0.09 0.01 0.00 433.21 439,38 6.17 0.00 75 75A 0.10 7 12 0.012 432.15 436.04 0.79 0.13 0.00 433.21 0,00 437.04 0.00 0,00 437.04 437.04 0.00 0.00 0.00 437.04 439.38 2.34 0.00 75 76 1.89 152 12 0.012 432.15 442.86 0.79 2.41 0.09 433.21 0.36 443.86 0.05 0.09 444.00 443.86 0.09 0.01 0.00 443.91 446.40 2.49 0.00 76 76A 0.08 27 12 0.012 442,86 443.40 0.79 0.10 0.00 443.91 0,00 444.40 0.00 0.00 444.40 444,40 0.00 0.00 0.00 444,40 446.40 2.00 0.00 76 77 1.89 166 12 0.012 442.8) 447.61 1 779 2.41 0.09 443.91 0.39 448.61 0.05 0.09 448.75 448.61 0.09 0.08 0.00 448.73 453.99 5.26 77 78 1.89 28 12 0,0I2 447.6i 447.75 0.79 2.41 0.09 448.73 0.07 448.80 0.05 0.09 448.93 448.75 0.09 0.03 0.00 448.87 454.371 5.50 78 79 1.89 65 12 0.012 447.75 448.07 0.79 2.41 0,09 448.87 0.1 449.07 0.05 0.09 449,21 449.07 0.09 0.05 0.00 449.16 451,25 2.09 79 80 1.89 7 12 0.012 448.07 448.21 0.79 2.41 0.09 449.16 0.06 449.23 0.05 0.09 449.36 449.21 0.09 0.12 0.00 449.39 451.25 1.86 80 81 1.89 78 12 0.012 448 2; 449.86 0.79 2.41 0.09 449.39 0.19 450.86 0.05 0.09 451.00 1 450.86 0.09 0.01 0.00 450.91 452,94 2.03 81 82 1.89 96 12 0.012 449.86 454.20 0.79 2.41 0.09 450.91 0.23 45 20 0.05 0.09 455,34 1 455.20 0.05 0.01 0.02 455,32 457.74 2.42 0.00 92 82A 0.49 27 12 0.012 454.20 454.74 ON 0.62 0.01 455.32 0.00 455.74 0.00 0.01 455.75 455.74 0,00 0.00 0.00 455.75 457,74 1.99 0.00 82 83 1.45 114 12 0.012 454.20 459.96 0.79 1.85 0.05 455.32 0,16 460.96 1 0.03 0.05 461.04 460.96 0.02 0.06 0.00 461.07 463,501 2.43 83 83A 0.94 TT 12 0.012 459.96 460.50 0.79 1.20 0.02 461.07 0.02 461.50 0,01 0.02 46153 461.50 0.00 0,00 0.00 461.53 463.50 1.97 46 84 1.04 72 12 0,012 455.59 455.95 0.79 1.32 0.03 457.42 0.05 457.47 0.01 0.03 457.51 456.95 0.00 0.03 0.00 0.01 457.50 459A9 1.99 84 84A 0.88 27 12 0.012 455.95 456.49 0.79 1.12 1 0.02 457.50 0.01 457.51 0.01 0.02 457.54 457.49 0,000.00 54 4500 0.00 0.00 457. ,49 1.95 0.00 84 85 1.04 165 12 0.012 455.95 464.11 0.79 1.32 1 0.03 45750 0.12 465.11 0.01 0.03 465,15 465.11 0.03 0.03 0.00 465.16 467.65 2.49 85 85A 1.04 27 12 0,012 464.11 464.65 0.79 1.32 0.03 465.16 0,02 465.65 0.01 0.03 465.69 465.65 0.00 0.00 OM 465.69 467.651 1.96 0.00 71 87 4.55 68 12 0,012 434.17 434.97 0.79 5.79 0.52 435.31 0.94 436.25 0.26 0.52 437.03 436.46 0.32 J40 0.00 437.03 437.80 0.77 87 86 3.57 27 12 0,012 434.97 435.10 0. 99 4.55 0.32 437.03 0.23 437,26 0.16 0.32 437.74 436.46 0.27 0.00 437.88 437.80 -0.08 87 H8 3.27 186 12 OAl2 434.97 438.88 0.79 4.16 0.27 437.03 1.32 439.88 0.13 0.27 440.28 439.88 0.07 0.13 440.50 443,46 2.96 0.00 88 88A 1.40 27 12 0,012 438.88 440.46 0.79 1.78 0.05 440.50 0.04 441.46 0.02 0.05 441.53 441.46 0.00 0.00 441.53 443.46 1.93 0.00 88 89 1.68 82 12 0,012 438.88 439.94 0.79 2.14 0.07 440.50 0.1 440.94 0.04 0.07 441.05 440.94 0.00 . 0.00 441.05 443,00 1.95 0.00 7A 7B 0.48 91 12 0,012 407.11 409.20 0.79 0,61 0.01 408.13 0.01 410.20 0.00 0,01 410.21 410.20 0.00 0.01 0.00 410.21 413.30 3.09 7B 7C 1 035 72 12 0,012 409,20 409.91 0.79 0.45 0.00 410.21 0.01 410.91 0.00 0.00 410.91 410.91 0.00 0.00 0.00 410,92 412.45 1.53 1 . 12 1 41 _ 0. 0 410-92 0. 1 1. 1 ,4 0. 1 .4 4 . 5 1.00 h ... MAMLWOUtf PARCEL PHtFARM)15 Y U.Brooks OB NUMBER 94168 E57DESIGN STORM: 100 YEAR ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND JUNCTION PIPE PIPE MANNING'S OUTLETJ INLET PIPE FLOW VELOCITY TAILWATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY HEAD HEAD HEADWATER FROM TO FLOW LENGTH DIA n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION CB CB (CFS) (FEET) ( VALUE (FEET) (FEET) (SQ FT) (FT/SEC) (FEET) (FEET) (FEET) (FEET) (FEET) EET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) RIM EL 2A 2 36.41 63 30 0.012 391.00 395.W 4.91 7.42 -0.86 398.39 0.42 39 . 1 0.43 0.86 400109- 8. 9 0. 4 403,50 3.56 2 3 36.41 132 30 0,012 395.00 398.00 4.91 7.42 0.86 399.94 0.88 400,82 0.43 0.86 402.10 400.50 0.29 1.13 0.47 403.41 405.20 L79 0.00 3 3A 0.73 27 12 0.012 399.50 402.16 0.79 0.93 0.01 403.41 0.01 403.42 0.01 0.01 403.44 403.16 0.00 0.00 0.00 403.44 405.20 1.76 0.00 3 4 3.42 1 2 12 0.012 399.50 402.28 0.79 4.35 0.29 403.41 1.03 404.44 0.15 0.29 404.88 403.69 0.29 0.02 0.05 404.65 406.27 1.62 0.00 4 4A 0.741 27 12 1 0,012 402,28 402.82 1 0.79 0.94 0.01 1 404.65 0.01 404.66 0.01 1 0.01 404,68 403.82 0.00 0.00 0.00 404.68 40627 1.59 0.00 4 5 3.42 200 12 0,012 402.28 403.28 039 4.35 0.29 404.65 1.55 406.20 0.15 0.29 406.65 404.70 0.29 .00 0.05 406.40 408.67 2,27 0.00 5 5A 0.73 27 12 0,012 403.21; 405.66 0.79 0.93 0.01 406.40 0.01 406.66 0.01 0.01 406.68 406.66 0.00 0.00 0.00 406.68 408.67 1.99 0.00 5 6 3.42 200 12 0.012 403.28 404.28 039 4.35 029 406.40 1.55 407.95 0.15 0.29 408.40 405.51 0.22 0.02 0.02 408.22 412.01 3.79 0.00 6 6A 1 0.23 27 1 12 0.012 404.29 409.01 0.79 029 0.00 408.22 0.00 410.01 0.00 0.00 410.01 410.01 0.00 0.00 0.00 410.01 412.01 2.00 0.00 6 7 2.96 78 12 0,012 404.29 404,67 0.79 3.77 0.22 408.22 0.45 408.67 0.11 0.22 409.00 405.67 0.11 0.08 0.07 409.04 413,97 4.93 0.00 7 7A 0.92 58 12 0.012 404.67 407.11 0.79 1.17 0.02 409.04 0.03 409.07 0.01 0,02 409.10 408.11 0.01 0.00 0.00 409.10 413,50 4.40 7 8 2.10 44 12 0.012 404.67 411.39 0.79 2.67 0.11 409.04 0.13 412.39 0,06 0.11 1 412.56 412.39 0.03 0.02 0.03 412.58 414.96 0..000 0.00 8 8A 1 0.45 27 1 I2 0,012 411.39 411.93 0.79 0.57 0.01 412.58 0.00 412.93 0.00 0.01 412.94 412.93 0.00 0.00 0.00 412.94 414,96 2.02 .00 8 9 1.10 138 12 0.012 411.39 415.53 039 1.40 0.03 412.58 0.11 416.53 0.02 0.03 416.58 416.53 0,02 0.00 0.00 416.56 418.56 0 0.00 9 10 0.83 55 12 0,012 415.53 416.74 0.79 1.06 0.02 416.56 0.03 417.74 0,01 0.02 417-77 417.74 0.00 0.00 0.00 417.77 419.74 1.97 0.00 3 11 36.41 73 30 0,012 398.00 399.99 4.91 T42 0.86 403.41 0.49 403.90 0.43 0.86 405.18 403.82 0.86 0.08 0,00 404.40 405.60 110 11 12 36.41 149 30 0.012 39999 400.94 4.91 7.42 0.86 404.40 0.99 405.39 0.43 0.86 406.68 404.80 0.86 0.09 0.01 405.92 40 .29 2.37 0.00 12 12A 0.53 27 12 0.012 402.44 405.29 0,79 0.67 0.01 405.92 0.01 406.29 0.00 0.01 406.30 406.29 0.00 0.00 0.00 406.30 408.29 1.99 0.00 12 13 36.41 42 30 0.012 400 94 401.15 4.91 7.42 0.86 405.92 0.28 406.20 0.43 0.86 407.48 405.01 0.86 0.19 0.00 406.81 409.01 2,20 13 14 36.41 54 30 0.012 401.15 401.42 4.91 7.42 0.86 406.81 0.36 407.17 0.43 0.86 408.46 405.28 0.86 0.24 0. 407.94 409,95 2.11 14 15 36.41 140 30 01012 401.42 402.12 4.91 7.42 0.86 407.84 0.93 408.77 0.43 0.86 410.06 405.21 1.36 0.27 0.16 409.14 412.65 3.51 0.00 15 16 7.36 60 18 0.012 403,12 403.92 1,77 4.16 0.27 409.14 0.25 409.39 1 0.13 0,27 409.79 1 405.42 0.27 0.03 0.00 409.55 412.63 3.08 16 17 7.36 135 18 0.012 403.92 404.59 1.77 4.16 0.27 409.55 0.56 410,11 0.13 0.27 410,51 406.09 0.27 0.05 0.00 410.30 409.93 -0.37 17 18 7.36 100 18 0.012 404.54 405.09 1.77 4.16 0.27 410.30 0.41 410.71 0.13 0.27 411.12 406.59 0.27 0.02 0.05 410.92 409.13 -1.79 0.00 18 18A 1.87 27 12 0,012 405.59 406.13 0.79 2.38 0.09 410.92 0. 410.98 0.04 0.09 411.12 407.13 0.00 0.00 0.00 411.12 409.13 _L99 0.00 18 19 7.36 130 18 0.012 405.09 406.31 1.77 4.1 0.27 41.0.92 0.54 411.46 0.13 0.27 411,86 407.81 0'.69 0.36 0.01 411.54 410,57 -0.97 0.00 19 20 0.32 200 12 0.012 406.81 413.01 0.79 0.41 0.00 411.54 0.01 414.01 0.00 0.00 414,01 414.01 0.00 0.00 0.00 414.02 416.551 2.53 20 20A 0.26 27 12 0,012 413.01 413.55 0.79 0,33 0.00 414.02 0.00 414.55 0.00 0.00 414.55 414.55 0.00 0.00 0.00 414.55 416.55 2.00 0.00 19 21 5,24 54 12 0,012 406.91 407.14 0.79 6.67 1 0.69 411.54 0.99 412.53 0.35 0.69 413.57 409.58 0.69 0.03 0.07 412.97 410.70 -2.27 0.00 21 21A 0.62 27 I2 0.012 407.14 407.68 0.79 0.79 0.01 412.97 0.01 412.97 0.00 0.01 4I2.99 408.68 0.00 0.00 0.00 412.99 410.70 -2.29 21 22 524 165 12 0.012 407.14 418.69 0.79 6,67 0.69 412.97 3.01 419.69 0.00 0.35 0.69 420.73 421.10 0.69 0.07 O.I 420.60 421.87 1.27 0.00 22 23 1.31 7 12 0,012 418.69 1 419.83 1 0.79 1.67 0.04 420.60 0.03 420.63 0.02 0.04 420.70 419.83 0.02 0.03 0.00 420.71 421.87 1.16 23 23A 0.88 8 12 0,012 1 418.83 420.34 0.79 1.12 0.02 1 420.71 0.02 421.34 0.01 0.02 421.37 421.34 0.00 0.00 1 0.00 1 421.37 424.37 3.00 0.00 22 24 5.24 5 12 D.012 418.69 422.84 0.79 6.67 0.69 420.60 1.37 423.89 0.35 0.69 424.93 425.30 0,69 0.05 0.10 424.76 425.94 1.18 0.00 OB NUMBER 94168 DESIGN STORM: 100 YEAR ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND JUNCTION PIPE PIPE MANNING'S OUTLET INLET PIPE FLOW VELOCITY TAILWATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY HEAD HEAD HEADWATER FROM TO FLOW LENGTH DIA. n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION CB CB (CFS) (FEET) (IN) VALUE (FEET) FEE (SQ FT) (FT/SEC) (FEET) (FEET) (FEET) (FEET) (FEET) (FEE (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) RIM EL 24 24A 1 1.02 13 12 0.012 422.89 423.15 0,79 1.30 0.03 424.76 0.01 424.77 0.01 0.03 424.81 424.15 0.90 0.00 0.00 424.81 426,74 1.93 0.00 24 25 5.24 218 12 0.012 422.89 433.14 0.79 6.67 0.69 424.76 3.98 434.14 0.35 0.69 43518 435.15 0.53 0.07 0.15 434.86 436.27 1.41 0.00 25 25A 1.03 15 12 0.012 433.14 433.44 0.79 1.31 0,03 434.86 0.01 434.87 0.01 0.03 434.91 434.44 0.00 0.00 0.00 434.91 437,04 2.13 0.00 25 26 1 1.32 27 12 0,012 433.14 433.27 0.79 1.68 0.04 434.86 0.03 434.89 0,02 0.04 434.96 434.27 0.04 0.00 0.00 434.92 436.27 1.35 26 26A 1.27 14 12 0,012 433.27 43355 0.79 1.62 0.04 434.92 0.02 434.93 0.02 0.04 435.00 1 434.55 0.00 0.00 0.00 435.00 436,57 1.57 0.00 25 27 4.60 83 12 0,012 433.14 437.12 0,79 5.86 0.53 434.86 1,17 438.12 027 0.53 438.92 439.12 0.16 0.05 0.21 439.03 440.31 128 0.00 27 28 1.53 27 12 0.012 437.12 437.26 0.79 1.95 0.06 439.03 0.04 439.07 0.03 0.06 439.16 438.26 0.05 0.03 0.00 439.14 44031 1.17 28 28A 1.38 15 12 0.012 437.26 437.56 0.79 1.76 0.05 439.14 0.02 439.16 0.02 0.05 439.23 438.56 0.00 0.00 0.00 439.23 441.08 1.85 0.00 27 29 2.48 198 12 0,012 437.12 446.23 0.79 3.16 1 0.16 439.03 0.81 447.23 1 0.08 0.16 447.46 447.23 0.02 0.00 0.12 447.56 449.76 2.20 0.00 29 30 1.43 27 12 0.012 446.23 446.37 0.79 1.82 0.05 447.56 0.04 447.60 0.03 0.05 447.68 447.37 0.04 0.01 0.00 447.64 449.76 2.12 30 30A 1.31 15 12 0.012 446.37 446.67 0.79 1.67 0.04 447,64 0.02 447.67 0.02 0.04 447.73 447.67 0.00 0.00 0.00 447.73 450.25 2.52 0.00 29 31 0.82 190 12 0.012 446.23 454.40 0.79 1.04 0.02 447.56 0.08 455.40 0.01 0.02 455.43 455.40 0.01 0.02 0.00 455.44 457.94 2.50 31 31A 0.62 27 12 0.012 454.40 454.94 0.79 0.79 0.01 455.44 0.01 455.94 0.00 0.01 455.95 455.94 0.00 0.00 0.00 455.95 457.94 1.99 0.00 15 32 29.33 38 24 0,012 402.62 407.94 3.14 9.34 1.36 409.14 0.54 409.84 0.68 1.36 411.87 412.51 1.36 0.54 0.01 411.71 414,33 0.00 0.00 32 32A 012 27 12 0.012 408.84 411.32 0.79 0.28 0.00 41131 0.00 412.32 0.00 0.00 412.32 412.32 0.00 0.00 0.00 41232 414.33 2.01 32 33 29.33 157 24 0.012 407.84 408.62 3.14 9.34 1.36 411.71 22 0.00 3 413.94 0.68 1.36 415.97 412.96 1.18 Q.15 0.01 414.95 417.54 2.00 0.00 33 33A 0.17 27 12 0.012 409.62 414.53 0.79 0.22 0.00 414.95 0.00 415.53 0.00 0.00 415.53 415.53 0,00 0.00 0.00 415.53 417.54 2.01 0.00 33 34 27.32 78 24 0.012 408.01 409.01 3.14 9.70 1.18 414.95 0.96 415.91 0.59 1.18 417.68 413.35 1.18 .09 0.05 416.64 41 ,12 2.48 0.00 34 35 27.32 124 24 0,012 409.01 415.41 3.14 8.70 1.18 416.64 1.53 418.17 0.59 1.18 419.94 419.71 1.18 0.00 1 0.01 418,78 421,70 2.92 .00 35 35A 0.39 27 12 0.012 416.41 418.68 0.79 0.50 0.00 418.78 0.00 419.68 0.00 0.00 419,69 419.68 0.00 .00 0.00 419.69 421.70 0 0.01 0.00 35 36 27.32 159 24 OAl2 415.41 416.20 3.14 8.70 1.18 418.78 1.96 420.74 0.59 1.18 422.50 419.98 0.96 0.05 0.05 421.64 425.I7 3.53 0.00 36 37 24.64 177 24 0.012 416.20 417.08 3.14 7.84 0,96 421.64 1.78 423.42 0.48 0.96 424.85 419.08 2.03 0.08 0.44 423.34 429,11 5.77 0.00 37 38 0.15 29 12 0,012 418.08 423.88 0.79 0.19 0.00 423.34 0.00 424.88 0,00 0.00 424.88 424.88 0.00 0.00 0.00 424.88 42 .23 4.35 0.00 37 39 14.01 195 1 15 0,012 417.83 430.10 1.23 11.42 2.03 423.34 7.35 431.35 1.01 2.03 4.39 434.56 1.43 0.00 0.00 433.13 433.40 0.27 0.00 39 40 11.77 55 15 0,012 430.10 430.70 1.23 9.59 1.43 433.13 1.54 434.67 0.72 1.43 436.81 435.19 1.43 0.04 0.06 435.49 434,59 -0.90 0.00 40 40A 0.62 27 12 0,012 430,95 431.49 0.79 0.79 0.01 435,49 0.01 435.50 0.00 0.01 435.51 432.49 0.00 0.00 0.00 435.51 434.59 -0.92 0.00 40 41 11.77 120 15 0.012 430.70 434.42 123 9.59 I.43 435.49 3.36 438.85 0.72 1.43 441.00 438.90 1.43 0.27 0.01 439.85 438.21 1.64 0.00 41 41A 0.11 27 12 0,012 434.67 435.21 0.79 0.14 0.00 439.85 0.00 439.$5 1 0.00 0.00 439.85 436.21 0.00 0.00 1 0.00 439.85 438.21 -1.64 0.00 41 42 11.77 7 15 0,012 434.42 437.91 1.23 9.59 1.43 439.85 2.16 442.01 0.72 1.43 444.15 442.38 1.43 0.40 0.00 443.12 441,21 -1.91 42 43 11.77 98 15 0,012 437.91 441.93 1,23 9.59 1.43 443.12 2.75 445.87 0.72 1.43 448.02 446.40 1.43 0.14 0.06 446.79 445.72 -1.07 4 OA 3 43A 0.62 27 12 12 442.18 442.72 0.79 0 0.00 .79 0.01 446.79 0.01 446.80 0.00 0.01 446.81 443.72 0.00 0.00 0.00 446.81 445.72 -1.09 0.00 43 44 11.77 65 15 0,012 441.93 445.89 1,23 9.59 1.43 446.79 1.82 448.61 0.72 1.43 450.76 450.35 1.43 0.31 0.00 449.64 449.16 -0.48 44 45 11.77 78 15 0.012 445.89 449.67 1.23 9.59 1.43 449.64 2.19 451.83 0.72 1.43 453.97 454.14 1.43 1 0.29 0.06 453.06 453.21 11 0.15 utj NAME: G. roo EB NUMBER: 94168 DESIGN STORM: 100 YEAR ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND JUNCTION PIPE PIPE MANNING'S OUTLET INLET PIPE FLOW VELOCITY TAILWATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY HEAD HEAD HEADWATER FROM TO FLO'"' LENGTH DIA. n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION CB CB (CFS) (FEET) (IN) VALUE (FEET) (FEET) (SO Fn (FT/SE (FEET) (FEET) (FEET) (FEET) ((FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) RIM EL 0.00 45 45A 0.62 28 12 0.012 449.92 450.48 0.79 0.79 0.01 453.06 0.01 453.06 0.00 0.01 453.08 451.48 0.00 0.00 0.00 453.08 453.48 0.40 0.00 45 46 11.77 ITT 15 0.012 449.67 455.34 1.23 9.59 1.43 453.06 3.42 456.59 0.72 1.43 458.74 459.08 1.15 0.03 0,00 45T97 458.77 0,80 0.00 46 47 10,54 294 15 0,012 455.34 467.21 1.23 8.59 1.15 457.97 6,39 468.46 0.57 1.15 470.18 468.46 0.08 0.00 1.16 47127 470.70 -0.57 0.00 47 48 5.79 27 15 0,012 467.45 467.82 1.23 1 4.72 0.35 471.27 0.19 471.45 0.17 0.35 471.97 469.48 0.32 0.02 0.00 471.67 471.20 -0.47 48 48A 5.60 12 15 0.012 467.82 468,10 1.23 4.56 0.32 471,67 0.0 471.74 0.16 0.32 472.23 469.35 0.00 0.00 0.00 472.23 471.60 -0.63 0.00 47 49 1.74 215 12 0.012 467.45 476.25 0.79 2.22 0.08 471.27 0.43 477.25 0.04 0.08 477.36 477.25 0.08 0.00 0.04 477.33 479.73 2.40 49 49A 1.74 44 12 0.012 476.25 4771_ 0.79 2.22 0,08 477.33 0.09 478.13 0.04 0.08 478.24 478.13 0.00 0.00 0.00 0.00 478.24 480,13 1.89 0.00 49 50 1.74 82 12 0.012 476.2.5 479.68 0.79 2.22 0.08 477.33 0.16 480.68 0.04 0.08 490.79 480.68 1 0.08 0.10 0,00 1 480.82 48322 2.40 50 50A 1.74 27 12 0,012 479.68 490,22 0.79 2.22 0.08 480.82 0.05 481.22 0.04 0.08 481.33 481.22 0.60 .00 0.00 481.33 483.22 1.89 0.00 34 51 1.37 195 12 0,012 410.01 410.96 0,79 1.74 0.05 416.64 0.23 416.88 0.02 0.05 416.95 411.96 0.05 0.06 0.00 416.96 415.00 -1.96 51 52 1.37 80 12 0.012 410.96 412.24 0.79 1.74 0.05 416.96 0.10 417.06 0.02 0.05 417.13 413.24 0.05 0.01 0.00 417.10 415.59 -1.51 52 53 1.37 27 12 0.012 412.24 412.56 0.79 1.74 0.05 417.10 0.03 417.13 0.02 0.05 417.20 413.56 0.01 0.06 0.00 417.26 415.59 -1.67 53 54 0.55 130 12 0.012 412.56 414.25 0.79 0.70 0.01 417.26 0,03 417.28 0.00 0.01 417.29 415.25 0.00 0.01 0.00 417.30 417,81 0.51 54 54A 0.09 27 12 0.012 414.25 414.79 0.79 0.11 0.00 417.30 0.00 417,30 1 0.00 0.00 417.30 1 415.79 0.00 0.00 1 0.00 417.30 417.81 1 0.51 0.00 36 55 1.31 65 I2 0.012 417.20 420.4d 0.79 1.67 0.04 42L64 0.07 421.72 0.02 0.04 421.78 421.44 0.04 0.06 0.00 421.79 424,07 2.28 55 56 1.31 27 12 0.012 420.44 420.57 0.79 1.6T 0.04 42139 0.03 421.83 0.02 0.04 421.89 42L57 0,02 0.06 0.00 421.93 424.07 2.14 56 57 0.91 150 12 0,012 420.57 423.87 0.79 1.16 0.02 421.93 0.08 424.87 0.01 0.02 424.90 424.87 0.00 0.00 0.00 424.90 428.50 3.60 OAO 37 58 10.63 124 24 0,012 417.08 417.75 3.14 3.38 0.18 423.34 0.2_ 423.57 0.09 0.18 4 3.84 419.75 0.18 0.12 0.00 423.78 430.00 6.22 58 59 10.63 124 24 .012 417.75 418.37 3.14 3.38 0.18 423.78 0.23 424.01 0.09 0.18 424.28 420.37 0.56 0.23 0.00 423.95 424.00 0.05 59 b0 10.63 85 18 0.012 418.87 419.34 1.77 6.02 0.56 423.95 0.74 424.68 028 0.56 425.53 421.78 0.56 0.21 0.04 425.22 425.06 -0.16 0.00 60 60A 0.88 27 12 0.012 419.T 422.05 0.79 1.12 0.02 425.22 0.01 425.23 0.01 0.02 425.26 423.05 0.00 0.00 0.00 425,26 425.06 -0.20 0.00 60 61 10.63 70 18 0,012 419.34 419.69 1.77 6.02 0.56 425.22 0.61 425.82 0.28 0.56 426.67 422.13 0.56 0.05 0.00 426.15 426.54 0.39 61 62 10.63 162 18 0.012 419.69 420.50 1.77 6.02 0.56 426.15 1.40 427.55 028 0.56 428.39 422.30 0.31 0.07 ---o-.-Oy 428.17 426.57 -1.60 62 62A 037 27 12 0.012 421,00 423,57 0.79 0.47 0.00 428.17 0.00 428.17 0.00 0.00 418.18 424.57 0.00 .00 0.00 428.18 42 .5 0.00 7 1.61 0.00 62 63 7.91 66 18 0,012 420.50 420.83 1.77 4.48 0.31 428.17 0.32 428.49 0.16 0.31 428.96 422.63 0.31 0,41 0.02 429.07 427.86 -1.21 0.00 63 64 0.53 30 I2 0,012 421.33 424.64 0.79 0.67 0.01 429.07 0,01 429.08 0.00 0.01 429.09 425.64 0.00 0.01 0.00 429.09 428.54 -0.55 64 64A 0.30 45 12 0,012 424.64 425.54 0,79 0.38 0.00 429.09 0.00 429.10 0.00 0.00 429.10 426.54 0,00 0.00 0.00 429.10 428.54 -0.56 0.00 63 65 7.91 110 18 0,012 420.83 421.38 1.77 4.48 0.31 429.07 0.53 429.60 0.16 0.31 430.07 423.18 0.31 0.00 0.01 429.77 426.10 -3.67 0.00 65 65A 0.38 48 12 0.012 421.88 423.10 0,79 0.48 0.00 429.77 0.00 429.77 0.00 0.00 429.78 424.10 0.00 1 0.00 0.00 429.78 426.10 -3.68 0.00 65 66 T91 109 18 0.012 421,38 421.93 L77 4.49 0.31 429.77 0.52 43029 0.16 0.31 430.76 423.73 0.65 0.41 0.00 430.53 427,23 -3.30 0.00 66 67 0,11 51 15 0.012 422.18 422.43 1.23 0.09 0.00 430.53 0.00 430,53 0.00 0.00 4 0.53 423.68 0,00 0.00 0.00 430.53 426.09 -4,44 67 67A 0.05 27 12 0.012 422.68 423.22 0.79 0.06 0.00 430.53 0.00 430.53 0.00 0.00 430.53 424.22 0.00 0.00 0.00 430.53 426.09 -4,44 66 68 7.91 74 15 0.012 422.18 425.11 1.23 6.45 0.65 430.53 0.9d 431.46 0.32 0.65 32.43 0.00 427.58 0.65 0.85 - 0.01 432.64 428,88 -3.76 0.00 68 68A 0.09 27 12 0.012 1 425.44 425.67 1 0.79 1 0.11 1 0.00 432.64 0.00 432,64 0.00 0.00 432,64 426.67 0.00 0.00 0.00 432.64 428.88 -3.76 0.00 68 �69 9 T91 198 15 0.012 425.11 429.49 1.23 6.45 0.65 432.64 2.51 435.15 0.32 0.65 4 6. 22 431.97 0.65 0.00 0.01 435.48 433.28 -2.20 0.00 69 A 0.09 27 12 0.012 429.49 430.28 039 0.11 0.00 435.48 0.00 435.48 0.00 0.00 435.48 43L28 0.00 0.00 0.00 435.48 433.28 -2.20 BACKWAl ER CALCULATIONS raoOB NUMBER. 9410 DESIGN STORM: 100 YEAR ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND JUNCTION PIPE PIPE MANNING'S OUTLET INLET PIPE FLOW VELOCITY TAILWATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY HEAD HEAD HEADWATER FROM TO FLOW LENGTH DIA. n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION CB CB (CFS) (FEET) (IN) VALUE (FEET) (FEET) (SQ FT) (FT/SEC) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) FEE FEE (FEET) (FEET) (FEET) (FEET) RIM EL 0.00 69 70 1 7.91 200 112 0,012 429.49 432.22 1.23 6.45 0.65 435.48 2.53 438.01 0.32 0.65 438.98 433.87 0.32 0.00 0.01 438.67 437.12 -1.55 0,00 70 70A 6.08 7 0,012 432.47 433.94 0.79 0.10 0.00 438.67 0.00 438.67 0.00 0.00 438.67 434.94 0.00 0.00 0.00 438.67 437.12 -1.55 0.00 70 71 5.59 109 0.012 432.22 433.92 1.23 4.56 0.32 438.67 0.69 439.35 0.16 0.32 439.94 435.53 0.75 0.43 0.09 439.61 439.15 -0.46 0.00 71 71A 0.08 150 1 12 0,012 434.17 436.73 0.79 0.10 0.00 439.61 0.00 439.61 1 0.00 0.00 439.61 437.73 0.00 0.00 1 0.00 439.61 439.15 -0,46 0.00 71 72 2.29 172 12 0.012 436.73 441.67 0.79 2.92 0.13 439,61 0.60 442.67 0.07 0.13 442.87 442.67 0.00 0.00 0.00 442.87 445.53 2,66 0.00 72 72A 0.09 27 12 0,012 441.67 442.21 0.79 0.11 0.00 44187 0.00 443.21 0.00 0.00 443.21 443.21 0.00 0.00 0.00 443.21 445.53 2.32 0.00 0.00 39 74 2.24 55 12 0,012 430.35 430.79 0.79 2,85 0.13 433.13 0.18 433.31 0.06 0.13 433.50 431.79 0.13 0.00 0.01 433.39 434,48 1.09 0.00 35 74 74A 0.18 32 12 0.012 43u.79 431.43 0.79 0.23 0.00 433.39 0.00 433.39 0.00 0.00 433.39 432.43 0.00 0.00 0.00 433.39 434.23 0.94 0.00 74 75 2.24 170 12 0,012 430.79 432.15 0.79 2.85 0.13 433.39 0.57 433.95 0.06 0.13 434.14 433.15 0.13 0.01 0.01 434.03 439.38 0.00 0.00 75 75A 0.12 27 12 0.012 432.15 436.04 0.79 0,15 0.00 434.03 0.00 437.04 0.00 0.00 437.04 437.04 0,00 M. 0.00 437.04 439.381 2.34 0.00 75 76 2.24 152 12 0,012 432.15 442.86 0.79 2.85 0.13 434.03 0.51 443.86 0.06 0.13 444.05 443.86 0.13 0.01 0.00 443.94 446.40 2.46 0.00 76 76A 0.09 7 12 0.012 442.86 443.40 0.79 0.11 0.00 443.94 0.00 444.40 0.00 0.00 444.40 444.40 0.00 0.00 0.00 444.40 446.40 2.00 0.00 76 77 2.24 166 12 0,012 442.96 447.61 0.79 2.85 0.13 443.94 0.55 448.61 0.06 0.13 448.80 448.61 0.13 0.11 0.00 448.78 453.99 5.21 77 78 2.24 TV. 12 0.012 447.61 447.75 0.79 2.85 0.13 448.78 0.09 448.87 1 0.06 0.13 449.06 448.75 0.13 0.04 0.00 448.98 454.37 5.39 78 79 2.24 65 12 0,012 44735 448.07 0.79 2.85 0.13 448.98 0.22 449.19 0.06 0.13 449.38 449.07 0.13 0.07 0.00 449,32 451.25 1.93 79 80 2.24 27 12 0.012 448.07 448.21 0.79 2,85 0.13 449.32 0.09 449.41 0.06 0.13 449.60 449.21 0.13 0.17 0.0 449.64 451.25 1.61 80 81 2.24 78 12 0,012 44s.21 449 8T 0.79 2.85 0.13 449.64 0.26 450,86 0.06 0.13 451.05 450.86 0,13 0.01 0.00 450.93 452.94 2.01 81 82 2.24 96 12 6.012 449.86 454.20 0.79 2.85 0.13 450.93 0.32 455.20 0.06 0.13 455.39 455,20 0.07 0.02 0.03 455.37 457.74 2.37 0.00 82 82A 0.58 7 12 0.012 454.20 454.74 0.79 0.74 0.01 455.37 0.01 455.74 0.00 0.01 455.75 455,74 1 0.00 0.00 0.00 455.75 457.74 1.99 0.00 82 83 1.70 114 12 0.012 454.20 459.96 0.79 2.16 0.07 455.37 0.22 460,96 0.04 0.07 461.07 460.96 0.03 0.08 0.00 461.12 1 463.50 2,38 83 93A 1.10 27 12 0,012 45996 460.50 0.79 1.40 0.03 461.12 0.02 461.50 0.02 0.03 461.55 461.50 0.00 0.00 0.00 461.55 463.50 1.95 0.00 46 84 1.23 72 12 0,012 455.59 455.95 0.79 1.57 0.04 4 7. 77 0.07 458.04 0.02 0.04 458.10 456.95 0.04 0.00 0.02 458.08 459A9 1,41 0.00 84 84A 1.03 27 12 0.012 455.95 456.49 0.79 1.31 0.03 459.08 0.02 458.10 0.01 0.03 459.14 457.49 0,00 0.00 0.00 458.14 459,49 1.35 0.00 84 85 1.23 165 12 0,012 455.95 464.11 0.79 1.57 0.04 458.08 0.17 1 465.11 0.02 0.04 465.17 463.11 0.04 0.04 0.00 465.17 467,651 2.48 85 85A 1.23 27 12 0,012 464.11 464.65 779 1,57 0.04 465.17 0.03 465.65 0.02 0.04 465.71 465.65 0.00 0.00 0.00 465.71 467.65 1.94 71 86 5.45 68 12 0.012 434.17 434.97 0.79 69 0,00 4 0.75 439.61 134 440.95 0.37 0.75 442.07 43b.77 0,44 0.46 0.00 442.09 437,80 -429 86 87 4.20 27 12 0.012 434.97 435.10 0.79 5.35 0.44 442.09 0.3 442.40 0.22 0.44 443.07 436.72 0.37 0.56 0.00 443.26 437.80 -5.46 87 88 3.94 186 12 0.012 434.97 438.88 0.79 4.89 0.37 443.26 1.8r 445.08 0.19 0.37 445.64 439.88 0.10 0.22 0.18 445.94 443.46 -2.48 0.00 88 88A 1.64 27 12 0.012 438.88 440.46 0.79 2.09 0.07 445.94 0.05 445.99 0.03 0.07 446.09 441.46 0.00 0.00 0.00 M410.22413.30 -2.63 0.00 88 89 1.97 82 12 0,012 438.88 439.94 0.79 2.51 0.10 445.94 0.21 446.15 0.05 0.10 446.30 440.94 0.00 0.00 0.00 -3.30 0.00 7A 7B 0.57 1 12 0.012 407.11 409.20 0.79 0.73 0.01 409.10 0.02 410.20 0.00 0.01 410.21 410.20 0.00 0.01 0.00 308 7B 7C 0.42 2 12 0.012 409.20 409.91 0.79 0.53 0.00 4 0,22 0.01 410.91 0.00 0.00 410.92 410.41 0.00 0.01 0.00 1.53 2 41 0.4 0. .46 4 .4� 0. 0,99 rHNAMh MAPLEWOOD PARCEL PREPARED BY: OB NUMBER: 94168 DESIGN STORM: roo 100 YEAR I ENTRANCE ENTRANCE EXIT OUTLET INLET APPROACH BEND JUNCTION PIPE PIPE MANNING'S OUTLET INLET PIPE FLOW VELOCITY TAILWATER FRICTION HGL HEAD HEAD CONTROL CONTROL VELOCITY HEAD HEAD HEADWATER ::FROM TO FLOW LENGTH DIA. n ELEVATION ELEVATION AREA VELOCITY HEAD ELEVATION LOSS ELEVATION LOSS LOSS ELEVATION ELEVATION HEAD LOSS LOSS ELEVATION B CB (CFS) (FEET) (I VALUE (FEET) (FEET) (SO FT) (FP/SE (FEE T) (FEET) (FEET) (FEET) (FEET) (FEET) (FEET) (FEE' (FEET) (FEET) (FEET) (FEET) RIM EL OiJT 45 CB 95 36.411 751 30 0.012 1 390.30 1 390.68 1 4.911 7.421 0.86 1 390.33 1 0.501 393.181 0.43 1 0.86 1 394.46 1 394.54 1 0.861 0.86 1 0.00 1 394.54 1 95.00 0.46 4 0 I -io 1 0.0121390.681 392.50 4.91 7,4210.861 394.54 1 0.2ol 395.001 0.43 .8 6.2 39 .0 0.00 1 396.28 9 -0.28 7�7-171, Inv 34 ,\ ' , :�< '. , • -�a• ,off �� �` ,�,,~.�� "�i�1��� � .. � - : .. . . s# ,�� ; t =°• 0. 46 I 6.ob IWO` .0b a 31 "A 46 AdL Z., NI 41 411� 46 10 A IV'I % k n. d' ILI .5 ♦% Do 30 so 1 rr 4v IN oft 21 loo- '26 Ab 46 N, 5a 44A I 14 to I 12 71 Aft k 61*Tm FaoT 54 Aa DEVELOPED OFFSITE TRIBUTARY AREAS *Woo" ....... % MAPLEWOOD PARCEL PROJECT NO. 94168 ,4 �w ( good go M1 1, f Y J `. 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