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HomeMy WebLinkAboutSWP272071(6) BASIS OF DESIGN STORM DRAINAGE SYSTEM �• -; GSA/FAA OFFICE BUILDING SITE June 5, 1989 1. Method of Analysis Drainage calculations were performed using the HEC-1 computer program. The HEC- 1 model simulates the surface runoff response of a drainage system to rainfall by representing the drainage system as a interconnected system of subbasins. Results of these calculations are attached to this document. SCS Runoff Curve Numbers are used in the model to represent varying degrees of surface permeability ranging from asphalt pavement to undeveloped vegetated areas. 2. Design Storm A 24-hour design storm duration was used as a basis for evaluating existing and proposed system capacity and for determining required detention storage. A Soil Conservation Service Type IA precipitation distribution was used in the HEC-1 model to represent typical rainfall distribution west of the Cascades. A Total 24-hour rainfall of 2.9 inches was used for a 10-year storm and 3.4 inches was used for the total precipitation for a 25-year storm. These rainfall amounts were obtained from Figures 3.5.1E and 3.5.1 F in the King County Surface Water Design Manual. 3. Analysis Of Existing Drainage System 3.1 Existing Flows Off GSA/FAA Site Existing storm flow prior to the proposed development of the site was evaluated as a basis for sizing the required detention facilities For analysis purposes, the existing site was subdivided into 2 subbasins. The eastern portion consists of mostly brush over loosely consolidated soil. Most of the precipitation over this area infiltrates into the soil or is retained in the existing vegetation. What runoff does occur flows slowly into the western portions of the site. The western portion of the site consists of an abandoned gravel parking area which drains into an abandoned storm drain system which, in turn, drains toward the west into the storm drain on Raymond Avenue. 3.2 Capacity of Existing Storm Drain System The capacity of the existing storm drains running along Raymond Avenue and Lind Avenue were evaluated for existing conditions for a 25-year, 24-hour design storm. Flow capacities were determined based on best available information obtained from as-built design plans supplied by the City of Renton Public Works Department. Basis of Design GSA/FAA Storm Drainage System Page 2 The HEC-1 model was used to compute existing flows based on available information on the existing drainage areas tributary to these storm drains. Analysis results show that the Raymond Avenue storm drain has adequate capacity to convey 25-year, 24-hour storm flows. The storm drain running along Lind Avenue does not have adequate capacity for a 25-year, 24-hour storm. 4. Proposed Drainage System For New Development The drainage system for the proposed development has been designed so that storm flows will be released into the existing storm drain on Raymond Avenue. Since the present capacity of the Raymond Avenue storm drain is adequate for a 25- year, 24-hour storm, the required detention facilities will be designed to provide detention storage for a 10-year, 24-hour design storm with the allowable release rate not to exceed the existing peak flow for a 10-year storm. Paved surfaces will be graded to drain to catch basins. The collected runoff will be piped through storm drains which will be sized for a 25-year, 24-hour storm. Detention will be accomplished by using the underground system and surface parking. Flows released from the detention facility control structure will be routed through an oillwater separator. The effluent flow from the oilJwater separator will then be routed through a grass-lined swale prior to discharging into the Raymond Avenue storm drain. M of !2A( t�t>�C�E CALC-5 , F, -k, F l of f G 5 s ►fig �o Y a To r -rn 1 Gf S : 01,,)(?,L1 e- r �I f o r,, I :T -ntj s :11A _1Y — ► S—) F--,aL for roo )��1 f � ov) p f E- CQ n G t 11 o r a. ! o e—a— r Zq — o,,A y :5 o r-rz Y � I - cA ►0 - c-� r r e- w a s e. - o.y fi r-� —f y ( _ 1-7 , 500 cU . �fitaG� 2��1 foY y z� -�4Y srtoY . fia VO y�>, * , CO-IJ-, 3 ) I 0 - �r • S1-o r m - C-T j A sate_ - Dc, P f,Q) Jale e3£285 2o5gJ0 »yl@w! PAGE I R« 2....... ....... ....... ...J...3...2...2...2... ?...2 *DIAGRAM I 2 RRWE ANALYSIS FOR FAA KR2a-g4g2 JkRe@ AVE. g@MrQw a ID ±C! MODE e2w24 R g31111) G2 J3faG G#JIb§ ] R 2 a# 4 10 . § e ka ! ROUT RON gSgR SBA 5 ! & q b«RFgHP3R &w3S6S«I8 7 & ,#! a 8 3.4 § R .004 .Ra 22 26 .61) .24 .Ra ,QED 03 ,04 S R 26 .«) 3a .69 »& .079 23 ,ez .053 2, 11 R 2Q 26 2D 2y \R 234 2g 24 252 264 2 PC2 2& 2aa 2gg 2)» 20 E.7 2.� 237 2»a 2»7 2!& b G 2675 2e¢ .aw 324 230, ."4 4 4 J454 .%w »7 G w »ga 3036 312'! a32 55 ,ge .55E.4 .s2 2»} 3 K ,j .g 16 , a 3)» 338 ,g6 .@2 324 R R .Q+ »ka 3740 .Q2 324 E. .702 .703 J27 25§ s K ,e« .#g 2s5 ,742 ,ag .7526 223 .a@ .7630 271,40 16 % .7790 .54,) .5g 2aa .ag .640 .ky aw0 .615-5 .&a D w .823 232 236 24 .@4 .ga .ae . B 2e SIG 6 PC ,ka 22 23 2a 2a .6a .892 .6& .9 .94 E & .98 ae a6 .» .924 .ea ,e2 .936 .9 a@ & R .+a 29 .BAG ae aG .563 a» .g& .# .g§ w k ,#a .ge .96 1.000 S 2 o al . 3 R am 21 2§ !o ' 26 # 4Q 21 2 g 22 E R ! E7 KK SD _ w R ROUTE Rasta gawS141 »22 :«# AVE. 2a#eg6! /@2 5 R 32 .#J 2g q2 ! y « ken KmR Fkw @§BASIN & £ U RUNOFF Rg ¥s«S HI.RTION 0, UQEVELOPED Ggg2 y R .k2 3 a o 61 a A 5 .011 ,J !M 3 b !# 33 22 .007 G« 15 3 R g&a Ru EEQM k§63@ a 3 KN RUNOFF FKA KaEa Jlq Q b &&g QkeE . a & .#§ . » a o S w « 9 3! Jo 13 Q R !y .y; .012) .94 . 2 R 32 23 22 2g G3 a . @ b C 1 w q OeleE3Els2Wgq a » !»w±d&agkesi @ k 2 . " . Ssygb R2522a yClbGT PAGE 2 OR2....... ....... ....... ....... ...3...3...2...2...a...to . 4 « gal b§RE FRO! yaa3 3 4 U .Z [a; Ge6 »&a `62EFACILITY . g & .#4 - 8 a 0 a . 3 a !g .01 20 !g . 2 a 60 26 ae .m§ QR 2 & R SUB R AFz34 6a&2w4 g q ko<7 FROM VALLEY Sae PAR . a N .9l S G 0 g y w !g .ma a§ su s 6 40 .6E .02 26 C« i g R Q! 2 2 D SS:e CQB Ra CE ! AND g S£ Ga AND Q S 1 2 GI HE 4 . e R g Q p ROUTE ROWS FROM GI2 »#aRAY£g AVE. Eg#H 2D1 DRAIN 6 & !k .kg 211 2 G4 63 Q R g Q # #gECaG THROUGH R'ND AVE. »gkdeaMbaa g b k! .92:1 22 2% 2 Q b g D q R@3 EJq ImQe #¥-D AVE. EKHt RS! 2mj a R 82 .mg 2g O« Ea . 71 ZZ SChEI i IC DiAGRAM Of STREAM NETWORK - k x I ST I h1 G Co N O 1 T O N S INPUT LINE (•J) i?OUTINS t--->) DIV ER'S:ON OR PUC P fLC NO. t.) C01i;iECTOR (�(t---) RETURN OF D STED 0+ U,'O ED fL-1 IJ J V 27 IZ SD 30 sUR2q (C;5 Site — East Po, fi;0-1 � 36 SUBoB CG5Q 51te 46 SUB 3 ( G�o � Hea�fh Ware_ho 'S�� P 52 sup, 4 � Va �� O�flc� Ia �Vc ) 59 C0.1 2.................................... V V 62 ZI SD V 65 Z`1 SJ `' V 63 Z7 SD t ► ) RUNOFF ALSO C0,11,PUTED AT THIS LOCATION; 102'_0 14U ; , 10220 1JU , 10230 16.0 F L 6\N/ 10240 17.0 , 10300 19. 0 , 10310 20. U Z •O 3, �I ,0 S • 6:� 10320 21. . D . . . . . . .I �0. . . . . . . . : . 10330 22. 0 10340 23. 0 103J0 24. U �, 3 10400 25. 0 10410 26. D - Z 10420 27. 0 10430 28. 0 10440 29. 0 • < 10450 30. 0• . 10:100 31. . . . . 0 . . . 10J20 33. 0 vi I0J30 34. 0 O IOJ40 31. D O T' 7Q 10JJO 31 0 7° Ln 3 10600 10610 36. 0 To 3 ' 713 10630 40. 0 . . 10640 41. . . . . . . . . .0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 . 106J0 42. ; ; . FT1 10700 43. Z 10710 44. cl 10720 45. 10730 46. 10740 47. ' 10800 49. 10310 50. Z 10820 51. . . . . . . . . . . . . . . . . . ..--' • _ 10830 J2. 10840 J3. D o � • Z 108J0 54. ;0 (� LA 10900 11. 10910 J6. 0 T11- 10920 57. 0 -T 10930 58. 0 o 10940 19. D 10950 60. 0 11000 61. . . . . . 0 . . . . . . . . . . . . . . . . . . . . . . i� 11010 62. 0 U 11020 63. 0 11030 64. 0 11040 65. 0 (� 1105O 66. 0 11100 67. 0 11110 68. •0 , 11120 69. .0 11130 70. .0 , 11140 71. . . . . . . . . . . 0 . . . . . . . . . . . . . . . . . . . . 11IA 72. 0 -- , 11200 73. 0 , 11210 74. 0 11220 75. 0 ti ;n 7r,. 0 RUNOFF SVf ARY FLOU IN CUBIC FEET PER SECOND TIME IN HOURS, AREA IS SOUARE MILES PEA; TIME OF AVERAGE F�G,4 FOR MAXIMUM PE,jiOD BASili MAXIMUM TIME OF OPERATION STATION FLO'a PEAy; 6-HOUR 24-aOUR 7 2- 01UIR R.1EA STAGE MAX STAGE HYDROGRAPH AT SUP i 0. 8.00 0. 0. 0 .01) ROUTED TO iZ" SD 0. 8.00 0. 0. 0. ,pal HYDP0G,1'A,PH AT SUKA 0. 14.50 0. 0. 0. HYDROGRAPH AT SUKOD 1. 8.00 0. 0. 2 COMHNED AT C.;1 1 1. 8.00 p, 0. 0 0; HYDROGRAPH AT SLIP 3 2. 7.83 1. 0. 0. ,pri HYDROGRAPH AT SUB 4 2. 7.83 0 0 0 00 4 COMBINED AT CON 2 5. 7.83 2, 1. 1. .OL ROUTED TO Z i SD 5. 7.83 2. 1. 1. .02 ROUTED TO -)-y SD S. 7.83 2. 1. i. .02 ROUTED TO . SD 5. 8.00 2. 1. 1. .02 NORMAL END OF HEC-1 caPac-;TY of z� - ,r��, Stor,�. = 6.Z ifs cfi�w;�� full ) 06-02-1989 13:07:06.59 HEC-1 INPUT PAGE i LIB_ ID.......1.......2.......3.......4........D.......6.......7.......,9.......?......10 *DIAG;'A' I ID DRAINAGE ANALYSIS FUj FAA BUILDI--6 2 ID HEC-1 MODE' (10Y.;-29 HR STu�;7;) 75 _)i.:TlA CONDiTiO,:: FOR 3SA SIZE 3 IT 10 200 4 IO 5 ( t� P fi r 5 A s'�e 5 KK SUB 1 RU^U F r�i EXIMA 1 C a s r. �Y '�. c i 6 BA .00, 7 P5 2.90 ( I O 9 PC .095 .050 .055 .060 AM .No .076 .082 .08d .094 10 PC .NO .106 .113 .120 44 .141 193 .1_:.•2 .I`-=i r'� .1726 .1306 .1890 ._ 7_ .2901 .__-- .225I .2352 .2 At 12 PC -- .2810 .2944 AM .3304 .4184 .4454 .6534 .415.1 13 PC .4902 .5036 .5124 .5212 .5351 0386 .5476 .5564 .5652 .571., i r C .5828 .5916 .6004 .6092 .6._; .6236 .6M .638C .6,52 .'•1L 15 PC AM .6668 .6740 .6812 .6324 AM .70:3 .7070 .7127 .70 is PC 7' „ 746? .7526 .7583 .7640 .7650 .7740 17 PC .7790 .7840 .7890 .7940 .755 .8040 .8050 .8140 .8110 .8240 18 PC .526 .832 .816 .84 .814 .nib .82 .856 .86 .n64 19 PC ALS .872 .876 .88 .884 .866 .892 .896 .90 .904 20 PC .908 .912 .916 .92 .924 .928 .932 .936 .94 .944 21 PC .948 .952 .956 .96 .964 .968 .972 .976 .98 .984 22 PC .988 .992 .996 1.000 2+ LS 0 6i N UK. 520 .o11 .3 100 21, RK 187 .005 .012 .007 Ci3 1.5 t 26 XK SUB I' ^ G S A 51TL )R_MFF -vMEMS N� r__ 42 27 BA .0044 28 LS 0 85 29 UK 90 .01 .20 100 3�:. Ri 130 .01,15 .012 .0044 C.RC 1.5 31 R„ 320 .005 .012 .0044 CIRC 32 KK coo 1 33 K7 COMB 1K FLO'dS F M StiBRENS 1 AN 2 34 HC 2 35cZ i i i i FLO'd Ii C017C Ft- PE SECON) T PE: Its HOCK, .AREA IN SOCA;""E t,;LES F'EAY TI?= OF AU U FG "Afi!"L;" F`ERI00r J,i.:.' TIC= ^•r OPERATION STATiON FLOC P=AA 6-HC 24-K!JR 72-10Ll;; (CFS) HYDROGRAPH AT • SUB 1 0. 24.00 0. 0. HYDROGRAPii A; SNUB 2 1. 8.00 0. 0. 0. .00 2 COMBINED AT col 1 1 '� 8.00 0. 0. 0. .01 ►x NORMAL ENO Or HEC-1 cif a Yr o a � v S�0 r m Y a i'n �r a-n � �►lowa6l � � �� � � fio Y c�e-T -,-,b o rn fa �y r 33«2e SE5g24 «ylaeT PAGEI LINE ID.......1.......J.......3.......4.......8.......&.......7.......8.......9......10 eG2R . . . 1 2 2g+E #RS3 FOR FAA kJQg 2 IDHEC-1 L (Wza R aORM) D E@D [m»zmR§ 8 9va) ROE . a R 10 a@ 4 10 S G b e@I qg3 ey mB36NI abx! CORNER) & b .ai 7 . Q E9 ( 10 - \A. ) a R .#4 .k» 22 . 28 .&§ ,2§ .ea .ge 22 .9§ 9 R .045 .mo 2S 2Q .y§ . a3 .m2 .Q: .m§ b K 20") 26 25 23 w& 334 24: 2@ w»: uw§ E w .172S z#3 2e§ 2y3 2J7 2!2 .aJ 2£2 2w7 2§» J e .SOW .RS ,R@ 224 334 . 5644 »134 w4c4 wG: »2w 3 R .gt ,5 03 224 .52:2 33) . a .ge 2&a .k9 3a§ 14 K .kg .me .gg .&k 32 1 .R» 33s 3380 ,62 324 . 3 R .Qa .bQ 37q§ 3812 388§ .gG .aO .703 2127 J16 s m .&w 2218 Ja§ 2412 .aa .72e 2gl .34-3 .#y Ja§ 17 w 27. 2849 2a90 2940 .ay .800 .## 2140 a 15 .@# g K ay »2 a3 2§ ,a4 .#a .a2 .a& OWE .864 2 pr .863 272 23 28 .884 .888 .892 .8 .g .904 20 % ad .92 a\ .9 .924 .3£ as »3 .9 ,944 21 k .a3 ag .5, aG .964 .«a .g2 a3 .ia .#§ » K ag .ga .gG 1.000 23 LS 0 95 24 a 29 225 2§ !Q . » R 1 .#J 22 .a! e« I y b 91 . 27 d ROUTE RBa aQQH »-INCH gGA y R Q0 .gl 2R ce ! w b qaa kRRFmM &gG@e y m .00i £ LS 0 f 2 a Ga 22§ 2@ 20 33 # i .33 22 20" CT ! a # C i 3 q GeHE ROWS [.. a ! AND & 2k2 y HC 2 y R . ge . a R KgE [aw Iae 4 2314CBB3d 2Rw a w 3 .aa 22 Gc E5 w b SUP RUNOFF oa ma&gNa 41 w .&g w LS 0 w . 43 b !k 21 1:5 20 R§ g R. 1 .M3 .0 2 2Wa of ! . k1 g' a 0 QI g 9 S 0 sl . w #g0 m 2 yK5@9m m2! !.7 r os # 2 I 33 h#2 Q« £G ! q . / 9! G` 25' 2 • An 2 « 0 e . Esa§3 62 lkme z RS Y. e . I 20 ¥may c fm' 2 @ R #1 g' gm' g m 2 . a 0 g 8 Rm' N g 9g99qllSQ11-1iJ2ww . 99S 9 a 2! J- - Oy [#' mI A g £NMatSk!] Dg ega19g] 31mS n g . . yb » n [ » a ; aeVkl@22 Ae [ e Gg 7y] axm] Q a » r R] # n I 20 PON' 22 [k' 2 A e QI g' 2g' gi 'Al G k 0 sl G g#' q 3 vNisuags Aa ]£em # §q 9 « T 2O g002 e2 9E MI 9 2 M! g' 9E' R1 w e . , « 0 Sl m Gm« N « tg993lgm3) 9RagSmb33g8 S «S a m 93 O«. 237 2 A S S R2Z K3aI a@ES2 t # » [ 3 # 9 a m a [ G222 Sraa Rg 9y] 7I9U/ n 9 ? m] » 9 g...y...2...y...y...y...y...2...2....I....g 3E e 2% 36IE2N sewGo! @OaCg hC 06-04-1989 16:53:43.83 HEC-1 liSPUT PAGE 3 LINEID.......1.......2.......3.......4.......5.......6.......7.......8.......9......10 8, Y,: SD i 86 KN ROUTE FLO'NS THROUGH 24-INC.i STCRN DRAIN 87 RK 150 .003 .012 CiRc 2 88 KK, SUP 9 RUNOFF FR&I SUPPASIN 9 89 PA .000s j0 LS 0 95 91 UK 80 .0125 .10 100 92 RK 70 .003 .012 .0005 CTRC 1 93 KK, SUP 10 RUNOFF FROM SUBPASIN 10 94 PA .0004 95 LS 0 95 96 UK 70 .0125 .10 100 97 RK 1 .003 .012 .0004 CIRC 1 98 KK SUP 11 RUNOFF FROl SUPP.ASIN 11 j9 PA .0004 100 LS 0 95 10_ UK 100 .0125 .10 100 102 RK 100 .003 .012 .0004 CIRC I 103 KK CON 5 104 Kil COMBINE FLOSS FROM SD 5 AND SUP ASINS 9,10 AND 11 1'0J HC 4 106 KY 107 r.M DIVERT FLO„S FOR FUTURE COi^BINAT'_UN WITt. CC';?PijTED FLO»S FROM EAST SIDE 108 DT DSD6 S0+ Di 2 4 6 8 110 DO 2 4 6 8 III KK SUP 12 RUNOFF FROM SUP BASIN 12 01O:3THEAST CORNER) 112 PA .0007 113 LS 0 95 114 UK 90 .0125 .10 100 115 �� Rr, 1 � ,s .02 .0007 CIRC 12 116 Kr; SD 7 11; K:N ROUTE FLOWS T KUGH L 11 Rr, 120 .003 .012 I! § / !e S B/ ga 2§ G§ 23 R 1 ./i 22 2008 E3 2 24 KK S! & 2: KM Q6 SE 2a: E6a 2 7 AND 236GN O !8 w 2 624-269 16554525 6Q1I4£ && 4 LNEID, ..2...2................ ....... ....... ...a...a...a...R 27 b Q a !g KM ROUTE FLOWS agG e«ka £AIMDRAIN . 29 R !y .ki 22 E& 65 » !a KK @aa ROUF FHl SUSA14 \ 131 m .kb !e a 0 95 !» . a Qo 212: 20 !k . la b 1 .#a 22 .#« Q2 . 2 5! KK S47 26 Q SQaEEL: FROM a a ¥a 2/ Qg 14 27 w 2 !» b @ 9 !a q ROUTE CQBIeRA 18gkH530 DRAIN 140 # Q .#a 212 EK L§ »! KK SUBS RUNOFF FROM mSq\ S 142 b .0002 143 LB 0 95 . w§ J g 225 .1 !R . 145 R k 3Q 22 .k» CJ ! . P& b CON , 147 KM QUaE G&BFROM Q 9 AND 25W2§ 3 wa k 2 !g KK g 10 !g q ROUTE Ras a6S5 agkH STORM DRAIN G! R !& .Qa 22 Ew 2 ie KK ga s RUNOFF FROM g!&£N 5 Ga & .#y E4 3 0 » EJ a 19 2e5 20 !S . 156 6 80 .003 22 327 E 3 1 . b§ G "\/ % b! y \ 21 20 &§ 162 R # .003 .012 2ya E« ! 163 R Cn 9 164 R COMBINE FLOWS FROM 2 10, 2EE> q +) keQa G !G! NE l 3-04s ) 6Ga aJ! ' RD12%I mQ § sw E....... ....... ...g...»...3...3...2...2...J...B bG b g g 167 R @mE ±as THROUGH a3Ei2ud /RN Ra a !g ,&] .Ga 2± 2 10 R g§ 17 kb»£ qA ma&gw R 170 m .0� 4 yl a o « y2 R !g 225 .g !g 173 @ g .0.53 22 .Gm OQ ! g§ a @a8 RUNOFFRa ggtD 2 Ss FA aQa . pG a o « 177 b a .«a 20 100 26 # ! .k2 a2 =#w E3 ! 173 R Qt§ . Qo . q elm& Gas FROM g 2, kr S@ 2 6) 2\wy R w: R . ) . 8 b SD 2 . 8 a ROUTEr±# T qq @d«seaMy@w s§ a 3 .ki 22 O« a !S K !S R Rwa FLOWS RRRImEC R:Ia WITH 3&Qe &a§ !3a #3 SIDE DT D;aiz !k 3 a 4 6 a h9 & 2 4 G \ 8 . . !w R 5 Ra»E9y 26wM a �g2a2T 2; yam R2DEE£g R1 m .mJ 22 a § a 2: R 2 13 2, In 0 k2\ RRSTHROUGH 2- R DRAIN / 197 R k .#i 22 GK i ga R Se 20 Ra7EEmM 2@&b. 3 g5 R, .ye ae J 0 » a! y 70 225 io R§ 62 R £ .&] 32 300E C2 2 33 R m%! 34 R COMBINE FLOWS FROM 2 13 #» @§&gw & b: k 2 . agwga 6654723 LINE2....... ....... ....... ....... ....... ....... ....... ....... ...2...» && R g 14 2t'.17 q ROUTE Egalegw 182X4 STPRA @6R &a R !Q .&a a2 . Ee b& 205 R ma 21 n Ez«! ga&S§ E E§ Q .002 e! q 0 « 52 a 50 212 x& !Q . Ra w g .ka ag .mg G2 2 E4 A G%2 as A COMBINE &S: Fgl2 14 AD@#ea S 2!e HE 2 &7 « & G Ea q ROUTE EQQI6ma 18--XH STORN mQw 20 R !k .yJ ae C4 cs 2 R ka e - q mmQEJb RR w2 9J OF «C . a» » .p5. &3 G 0 a 84 U, &§ . 21 20 I &§ b 40 .03 2g 3 Gk ! e& R ?92SD O:SR) &C& E23Sh ge » gT »7 y »3 . 9O5R2 m s9RS� �2, ge a«9 ! gJ STxiw ¥ 3. R2, 232 K�, THIS THE TOTAL PENK Sn-3ITE HE PRO-POSE) XVELuPKEli :10 „i.) 233 KO 1 2 234 HC 4 235 K!. RES 1 236 KM ROUTE HYDF.DGNPH THROUGH DETEtiTNN SYSTEM WITH 10 YEAR l"_tASE = I CF3 237 KO 1 2 238 RS 1 ELEV 12 239 SV 0 .1 .2 .4 .6 .8 1.0 240 S; 12 12.5 13 14 15 16 18 241 so 0 0.5 1 1 1 1 1 242 ZZ SC4,:, 'fTIC DIAGRAM 6 STREA1 SENOR," INPUT LINE (V) ROUTING (--->i DIVERSION OF. PUMP FLN NO. (.) c0i=1,ECTG: t{---> RETURN OF DIVE TED OR P*-j:l -ZD FLOC 5 S1A 1 V V 26 SD 29 sL!B 2 34 CG ....... V V 37 SD 2 40 SUB 3 4_ c1lil �............ U U 4 SD 3 �I S_•. J �1 61 coil 3........................ V V 64 SD 4 67 SLID 6 72 SUB 7 77 SUP 8 810 MI 4.................................... V V 8J ID J 8;i K P 9 93 SUP 10 98 SUP 1' 103 CON J., ........................ 108 .-------) D-I 106 111 SUP 12 U V ll6 SD 7 119 SUP 13 lc4 COim o............ V V 127 3 130 SUP 14 c0 7............ �J V l S! 9 V ' v 149 SD 10 152 SUP :6 157 SUN R1 163 COIN 9........................ V V 166 SD 11 169 SUB 17 174 5-lip 18 179 Coll........................ y v 182 SD 12 187 ,-------i D=J:? 185 19v 19 V V 195 SD 13 1,8 SU+ 20 205 CO11i............ V V 206 SD 14 209 SU1 21 214 C0il12............ V 217 SD 15 2 J`I ; SUB n? 227 .!------- D�D6 2LJ • , 22g 230 - coi�13.................................... V V 231 R E S 1 UCTi:—�- r-ITIot-1 F TY (*£f) RUNOFF ALSO COMPUTED AT THIS LOCATION IE►rt. FLOOD HYDROGRAPH PACKAGE HEC-1 MIDOS VERSION) - JA);UA Y 192'_'• DODSON AND ASSOCIATES, INC. 7015 � TIDWELL. HOUSTION TEXAS 7i092, P'HG1E (713)5'35-8322 DRAINAGE ANALYSiS FOR FAA ALtiLUi)�G hEC-1 r',0DEL (2`YX 2A HR STORiM FOR' DEV=LOPED C0HDS.-DRA1H TO RAYMC..?iD W 4 IO OUTPUT CONTROL VARIABLES IP'^.1T 5 PRINT CONTROL IPLOT 0 PLOT CONiROL OSCAL 0. HYD�;OGR :`h PLOT SCALE IT HYDRGGRAP'ti TI DATA N M IY lu I1;_:TES I LO'~UTATI- It+TERVitL Tr:aT- 1 0 D:,TE !0!300 P� a � l N i(_ O Tom" D ET;E.,.;T l,ot-t F�c i I- C G C S ). 10i30 !00 `T� 10140 116). . . . . . . . . . . . . . . . . . . . . . . 10i50 120 . 10200 130 10210 140 10220 150 10230 16.0 10240 17.0 10250 18.0 10300 19. D 10310 20. D 10320 21. .0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10330 22. 0 10340 23. D 103JO 24. D 10400 25. 0 _0410 26. 0 10420 27. 0 10430 28. G 10440 29. D , 10450 30. 0 10500 31. . . .0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10510 32. G 12 10530 34. 0 . IOJ40 35. U . 10"710 K. 0. , 10E..00 37. 0. 10610 38. 0 10620 3i. 0 10630 40. 10640 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10659 42. 10700 43. 10710 44. 10720 45. , 10730 46. 10740 47. 10750 48. 108:,0 45. 108i0 50. 10820 51. . . . . . . . . . . . . . . . . . . . . . . . . 10830 52. 10840 53. 10850 54. 111100 5.5. 0 10520 5;. 10930 58. 10940 51. .0 10'350 6u. .0 11000 61. . . . .0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11010 62. .0 11020 63. .0 11030 64. .0 11040 65. 0 11050 66. .0 11100 67. 0 1IIIII 11120 11130 70. 0. -140 71. . . . .0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • i v IIltA+FEtIFt#!liilflllf IIIf I!!IF,[if fit if if I If*IKIIIIfI1111#111If fflffiill11111###{I lit 1FIIfEl1#4I Ff!#1I1tlf#I4#ItCl 1/1111111 lit if It HTDROGRADH AT STATION RES 1 1 1 1FII##l[!f#####1lf4ltfFf(fifffflflttif/fifE/t#Ai#4!!lEIAFIFF{lf ilif(l1 lit 111/If It*lt#iilf Af lfltll##C#If##{fiI+IFII#fI1E#1lllltl4ll! I e • I 1 # DA MON HRMN ORD OUTFLOW STORAGE STAGE + DA MON HRMN ORD OUTFLOW STORAGE STAGE + DA MOH HRMN ORD OUTFLOW STORAGE STAGE 1 0000 1 0. .0 12.0 + 1 1110 68 1. .4 14.1 f 1 2220 135 1. .1 12.7 1 0010 2 0. .0 12.0 + 1 1120 69 1. .4 14.1 + 1 2230 136 1. .1 12.7 I •• 1 0020 3 0. .0 12.0 ( 1 1130 70 I. .4 14.1 + 1 2240 131 1. .1 12.7 1 1 0030 4 0. .0 12.0 + l 1140 71 1. .4 14.1 # 1 2250 138 1. .1 12.7 1 0040 5 0. .0 12.0 t 1 1150 72 1. .4 14.1 + 1 2300 139 1. .1 12.7 • I 1 0050 6 0. .0 12.0 + 1 1200 73 1. .4 14.1 + 1 2310 140 1. .1 12.7 I e 1 0100 7 0. .0 12.0 I 1 1210 74 1. .4 14.1 # 1 2320 141 1. .1 12.6 1 0110 8 0. .0 12.0 + 1 1220 15 1. 4 14.1 + 1 2330 142 1. 1 12.6 • I 1 0120 9 0. .0 12.0 + 1 1230 76 1. .4 14.1 # 1 2340 143 1. .1 12.6 I e 1 0130 10 0. .0 12.0 # 1 1240 77 1. .4 14.1 1 235 0 144 1. .1 12.6 1 0140 11 0. .0 12.0 # 1 1250 78 1. .4 14.1 + 2 0000 145 1. .1 12.6 1 0150 12 0. .0 12.0 + 1 1300 79 1. .4 14.0 + 2 0010 146 1. 1 12.6 1 0200 13 0. .0 12.0 + 1 1310 80 1. 4 14.0 + 2 0020 147 1. .1 12.6 1 0210 14 0. .0 12.0 # 1 1320 81 1. .4 14.0 + 2 0030 148 1. .1 12.6 1 12.5 2 0040 149 1. . • + e 1 0220 IS 0. .0 12.0 + 1 1330 B2 1. .4 14.0I 1 0230 16 0. .0 12.0 + 1 1340 83 1. .4 14.0 + 2 0050 150 1. .1 12.5 i 1 0240 17 0. .0 12.0 + 1 1350 84 1. 4 14.0 + 2 0100 151 0. .1 12.5 1 0250 18 0. .0 12.0 + 1 1400 85 1. .4 1J.9 # 2 0110 152 0. .1 12.4 i e i 1 0300 19 0. .0 12.0 + 1 1410 86 1. .4 13.3 r 2 0120 153 0. .1 12.4 1 0310 20 0. .0 12.0 E 1 1420 87 1. 4 13.9 + 2 0130 154 0. 1 12.4 ' e O I 1 0320 21 0. .0 12.1 + 1 1430 88 1. .4 13.9 + 2 4140 155 0. .1 12.4 � 1 0330 22 0. .0 12.1 + 1 1440 89 1. .4 13.9 + 2 0150 156 0. .1 12.3 1 0340 23 0. .0 12.1 E 1 1450 90 1. 4 13.9 1 2 0200 157 0. 1 12.3 ' 1 0350 24 0. .0 12.1 # 1 1500 91 1. .4 13.8 # 2 0210 158 0. .1 12.3 i 1 0400 25 0. .0 12.1 # 1 1510 92 1. .4 13.8 + 2 0220 153 0. 1 12.3 i 0ii3 20 0. .0 i2.i i iS20 93 1. .4 13.8 # 2 0230 160 0. .1 12.3 - 1 0420 27 0. .0 12.2 + 1 1530 94 1. .4 13.8 + 2 0240 161 0. .1 12.3 1 0430 26 0. .0 12.2 # 1 1540 95 1. .3 13.7 + 2 0250 162 0. .0 12.2 i 1 0440 29 0. .0 12.2 + 1 1550 96 1. .3 13.7 + 2 0300 163 0. .0 12.2 • 1 0450 30 0. .0 12.2 # 1 1600 37 1. .3 13.7 # 2 0310 164 0. .0 12.2 e i 1 0500 31 0. .1 12.3 r 1 1610 98 1. .3 13.7 # 2 0320 165 0. .0 12.2 1 0510 32 0. .1 12.3 # 1 1620 99 1. .3 13.7 r 2 0330 166 0. .0 12.2 e I 1 0520 33 0. .1 12.3 # 1 1630 100 1. .3 13.6 + 2 0340 167 0. .0 12.2 1 0530 34 0. 1 12.4 E 1 1640 101 1. .3 13.6 # 2 0350 168 0. .0 12.2 1 0540 35 0. .1 12.4 r 1 1650 102 1. .3 13.6 + 2 0400 169 0. .0 12.1 e i 1 0550 36 0. .1 12.4 + 1 1700 103 1. .3 13.6 + 2 0410 170 0. .0 12.1 1 0600 37 0. .1 12.5 E 1 1710 104 1. .3 13.5 + 2 0420 171 0. .0 12.1 1 0610 38 0. .1 12.5 # 1 1720 105 1. .3 13.5 + 2 0430 172 0. .0 12.1 e 1 0620 39 1. .1 12.5 # i 1730 106 ]. J 13.5 + 2 0440 173 0. 0 12.1 O 1 0630 40 1. .1 12.6 + 1 1740 107 1. .3 13.4 + 2 0450 174 0. 0 12.1 1 0640 41 1. .1 12.6 # 1 1750 108 1. .3 13.4 + 2 0500 175 0. .0 12.1 . 1 0650 42 1. .1 12.6 + 1 1800 109 1. .3 13.4 + 2 0510 176 0. .0 12.1 I • i i 0700 43 1. .1 12.7 # 1 1810 110 1. .3 13.3 +. 2 0520 177 0. .0 12.1 1 0710 44 1. .1 12.7 t 1 1820 111 1. .3 13.3 + 2 0530 178 0. .0 12.1 e 1 0720 45 1. .2 12.8 E 1 1830 112 i. .3 13.3 + 2 0540 177 0. .0 12.1 . 1 0730 46 11 .2 12.9 + 1 1840 113 1. .2 13.2 + 2 0550 160 0. .0 12.1 i 1 0740 47 1. .2 13.0 r 1 1850 114 1. .2 13.2 # 2 0600 181 0. .0 12.1 1 0750 48 1. .2 13.2 t 1 1900 Ili 1. .2 13.2 # 2 0610 182 0. .0 12.1 i e 1 0800 49 1. .3 13.1, 4 1 1910 116 1. .2 13.1 + 2 0623 183 0. .0 12.] 1 0810 50 1. .3 13.7 # 1 1920 117 1. .2 13.1 I 2 0630 184 0. .0 12.1 1 0820 51 I .4+ 13.8 + 1 1930 118 1. .2 13.1 { 2 0640 185 0. .0 12.1 e • i 1 0830 52 1. .4 13.1 # 1 1140 111 1. .2 13.0 + 2 0650 186 0. .0 12.0 i i 1 0840 53 1. .4 13.9 A 1 1950 120 1. .2 13.0 + 2 0700 187 0. .0 12.0 1 0850 54 1. .4 14.0 E 1 2000 121 1. .2 13.0 + 2 0710 188 0. .0 12.0 1 0900 55 1. .4 14.0E 1 2010 122 1. .2 12.9 + 2 0720 189 0. .0 12.0 1 0910 56 1. .4 14.0 E l 2020 123 1. .2 12.9 # 2 0730 130 0. .0 12.0 i e 1 0920 57 1. .4 14.0 # i 2030 124 1. .2 12.9 # 2 0740 191 0. .0 12.0 i O I 1 0130 58 1. .4 14.0.I 1 2040 125 1. .2 12.3 # 2 0750 192 0. .0 12.0 I 1 0740 59 1. .4 14.0 + 1 2050 126 1. .2 12.8 + 2 0800 113 0. .0 12.0 1 0950 60 1. .4 14.0 # 1 2100 127 1. .2 12.8 + 2 0810 194 0. .0 12.0 e .4 14.1 # 1 2110 128 1. .2 12.8E 2 0820 195 0. .0 12.0 1 i 1 1000 61 1. � 1 1010 62 1. .4 14.1E 1 2120 129 1. .2 12.8 + 2 0830 116 0. .0 12.0 1 1020 63 1. .4 14.1 i 1 2130 130 1. .2 12.8 + 2 0840 197 0. .0 12.0 ® I 1 1030 64 1. .4 14.1 + 1 2140 131 1. .2 12.8E 2 0850 198 0. .0 12.0 I 1 1040 65 1. .4 14.1 + 1 2150 132 1. .1 12.7 E 2 0900 193 0. .0 12.0 p 1 1050 66 1. .4 14.1 + 1 2200 133 1. .1 12.7 + 2 0910 200 0. .0 12.0 1 1100 67 1. 4 14 + 1 2210 134 r 1. .1 12.7_+ r .1. .,_•_I r `r- - 1 -v, TIME IH HOURS, AREA IN SQUARE MILES PEAK TIME OF AVERAGE FLOW FOR MAXIMUM PERIOD BASIN MAXIMUM TIME OF OPERATION STATION FLOW PEAK 6-HOUR 24-HOUR 72-HOUR AREA STAGE MAX STAGE HYDROGRAPH AT SUB 1 0. 7.83 0. 0. 0. .00 ROUTED TO SD 1 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 2 0. 7.83 0. 0. 0. .00 2 COMBINED AT COM 1 1. 7.83 0. 0. 0. .00 ROUTED TO SD 2 1. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 3 0. 7.83 0. 0. 0. .00 2 COMBINED AT COi1 2 1. 7.83 0. 0. 0. .00 ROUTED TO SD 3 1. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 5 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 4 0. 7.83 0. 0. 0. .00 3 COMBINED AT C0.1 3 1. 7.83 0. 0. 0. .00 ROUTED TO SD 4 1. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 6 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 7 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 8 0. 7.83 0. 0. 0. .00 4 COMBINED AT COM 4 2. 7.83 1. 0. 0. .00 ROUTED TO SD 5 2. 7.83 1. 0. 0. .00 HYDROGRAPH AT SUB 9 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 10 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 11 0. 7.83 0. 0. 0. .00 4 COMBINED AT C07 5 3. 7.83 1. 0. 0. .01 DIVERSION TO DSD6 3. .17 1. 0. 0. .01 HYDROGRAPH AT 0. .17 0. 0. 0. .01 HYDROGRAPH AT SUB 12 0. 7.83 0. 0. 0. .00 ROUTED TO SD 7 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 13 0. 7.83 0. 0. 0. .00 2 COMBINED AT COM 6 1. 7.83 0. 0. 0. .00 ROUTED TO SD 8 1. 7.83 0. 0. 0. •01 H'iDfiOGRAPH AT SUB 14 0. 7.83 0. 0. 0. •00 2 COMBINED AT COM 7 i. 7.83 0. 0. 0. .00 ROUTED TO SD 9 1. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 15 0. 7.83 0. 0. 0. .00 2 COMBINED AT COi1 8 1. 7.83 0. 0. 0. .00 ROUTED TO SD 10 1. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 16 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB R1 0. 8.00 0. 0. 0. .00 3 CGMBINED AT COI" 9 2. 7.83 1. 0. 0. 00 ROUTED TO SD 11 2. 7.83 1. 0. 0. 00 HYDROGRAPH AT SUB 17 0. 7.8 3 0. 0. 0. 00 HYDROGRAPH AT SUB 18 0. 7.83 0. 0. 0. .00 3 C&IIHNED AT C01,110 2. 7.83 1. 0. 0. .00 ROUTED TO SD 12 2. 7.83 1. 0. 0. .00 DIVERSION TO DSD12 2. .17 1. 0. 0. .00 HYDR65RAPH AT 0. .17 0. 0. 0. .00 HYDROGA'APH AT 19 0. 7.83 0. 0. 0. .00 ROUTED TO SD 13 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 20 0. 7.83 0. 0. 0. .00 2 COMBINED AT CONll 0. 7.83 0. 0. 0. .00 ROUTED TO SD 14 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB 21 0. 7.83 0. 0. 0. .00 2 COiMBINED AT COM12 1. 7.83 0. 0. 0. .00 ROUTED TO SD 15 0. 7.83 0. 0. 0. .00 HYDROGRAPH AT SUB R2 0. 8.00 0. 0. 0. .00 HYDROGRAPH AT 3. 7.83 1. 0. 0. .00 HYDROGRAP;i AT 2. 7.83 1. 0. 0. .00 4 COMBINED AT C0h13 6. 7.83 2. 1. 1. .00 ROUTED TO RES i 1.� 7.83 1. 1. 1. .00 14.10 11.00 �0 0 Gcjr o , r NORMAL END OF HEC-1 *