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Home My WebLink AboutMASONRY DAM FLOOD OPERATIONS STUDYMASONRY DAM FLOOD OPERATIONS STUDY Flood Frequency Curves Flow Duration Curves Event Hydrographs Prepared for: Seattle Public Utilities, Seattle, Washington King County Water and Land Resources Division, Washington City of Renton, Washington Prepared by: Northwest Hydraulic Consultants Tukwila, Washington November 1997 FLOOD FREQUENCY CURVES LANDSBURG 100000 Y CO CU n 1000 + Baseline Conditions _ _ _ _ Alternative la 4 f .001 .01 .10 .50 .90 .99 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) W 100000 Ul Y Q) n 1000 + Baseline Conditions _ _ _ _ Alternative 1b �E 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 Y (D U n 1000 + Baseline Conditions .x _ _ _ _ . Alternative 2a 001 .01 .10 .50 .90 .99 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 Mj 1111 c- ro L U U1 O 1000 + Baseline Conditions .x _ _ _ _ Alternative 2b ------------- 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 9WOO L fD U Cf] Y f� U r 1000 + Baseline Conditions x _ _ _ _ Alternative 2c / / - - X 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 iff,wo 1000 + Baseline Conditions — — — — Alternative 3a ++ iE -----------4-------- .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 dl0000 L CO L U (n co �o CD a 1000 + Baseline Conditions .x - --- Alternative 3b ~- ++/ +H+ � -- ---* - 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 L M c- U U) 1II 1000 + Baseline Conditions -- -- Alternative 3c (1) / / +++ + .4+ i *- -- - - - - ----- ------ 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 1 I IIIII] U 11II 1000 + Baseline Conditions .x - - - - Alternative 3c (2) / / / X' ++yi��F # ++ A _ xx_ --------+--J---- .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 �.IZJTIWI co W a 1000 + Baseline Conditions .x _ _ _ _ Alternative 3c (3) 7% A 7% n _ _ _ — � " + 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) �o CU CL 1111, 1000 + Baseline Conditions .x - - - - Alternative 3c (4) / ++// + # -------------%- 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 Y (a QJ r 1111, 111110 + Baseline Conditions — — — — Alternative 3c (5) X / + + +++ ' X if �E X x X X-X��ASAHB ------------ '---- + .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 =; 1111 1000 + Baseline Conditions _ _ Alternative 3c (6) _____-__I - - L 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 11II 1000 + Baseline Conditions x - - - - Alternative 3c (7) + , A xx*)� ------------ -"- 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 9A0000 Co au n 1000 + Baseline Conditions x - - - _ Alternative 3c (8) , / i ++cif J+ ----------�----- 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) i[IO IN U -a 1111 L f0 U W Y f0 CLJ d 1000 + Baseline Conditions x - - - - Alternative 3c (9) ii / y , / +++, x-X)(X.X� - - - - - - - - - - - - - + 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 =; 11 I I Co CD a 10141] + Baseline Conditions -- -- Alternative 3c (10) + + + .11 +++ + 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 d10000 1000 + Baseline Conditions x - - - - Alternative 3d (1) ++ + +// +++ x + E )W IrAA g6AAP°` -------- 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) IIIIA d40000 L (O L U co 1000 + Baseline Conditions x - - - - Alternative 3d (2) / + + + ++ / ++ y + A^ - - - - - - - - - - - 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 f L CO U W co 1000 + Baseline Conditions X - - - - Alternative 3d (3) 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 =; 1111 Y ro QJ cl- 1000 + Baseline Conditions x - - - - Alternative 3d (4) y / ++ / + �E�E�EiE6� --------*-- .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 Y CO CD d 1000 + Baseline Conditions * - - - - Alternative 3d (5) ,K/ / �. + / i+ + -- - - - - --- -----* _ 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 f0 U CL 1111 1000 + Baseline Conditions .x - - - - Alternative 3d (6) X + + ++ --------I--�-�-�-�xx** 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) M 100000 1111 1000 + Baseline Conditions - - - - Alternative 3d (7) } +/ + +�H } wo* X 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 121l7500) 100000 co a) a 11II 011A + Baseline Conditions x — — — — Alternative 3d (8) X ++ + +++ iF 3f / X + J+ -------------J--_- 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 �0000 1000 + Baseline Conditions x - - - - Alternat i:e 3d (9) / / + / ++ # jE x / - - - -_- X 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 I 1000 } Baseline Conditions Alternative 3d (10) 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 MINI 1000 + Baseline Conditions Alternative 4a - - - - - - - - - - - X - - .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 4-- , WOO .001 .01 [,onditions ve 4b .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) 100000 U 1000 Baseline Conditions Alternative 4c / / .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Landsburg (USGS gage 12117500) FLOOD FREQUENCY CURVES RENTON 100000 U ff$Wl c- ro U U) 0 1000 + Baseline Conditions X _ _ _ _ Alternative la II .1 f I 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) fM410] 240000 L CD L U U) 0 1000 + Baseline Conditions X _ _ _ _ Alternative 1b 7 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 L ro U U') 0 1000 + Baseline Conditions X - - -_ Alternative 2a / / i 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 U .01 11 I I 1000 + Baseline Conditions X _ _ _ _ Alternative 2b / / .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 cu cl- 1000 + Baseline Conditions X _ _ _ _ Alternative 2c + ' , , , i , , 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 U -, 1111 101410 + Baseline Conditions x - - -- Alternative 3a , , i +ESE + X 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) xWorll 4- U MW 1I1I 1000 { Baseline Conditions x _ _ _ _ Alternative 3b ++ +// + + + 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 Ills, 1000 + Baseline Conditions .x - _ _ _ Alternative 3c (1) , + ' - + �E �E iE�E3E 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gags 12119000) 100000 O111 1000 + Baseline Conditions x _ _ _ - Alternative 3c (2) , , +++' + - ++ + X 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 a) n 1111 1000 + Baseline Conditions x _ _ _ _ Alternative 3c (3) + 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 210000 1000 + Baseline Conditions .x — — — — Alternative 3c (4) + / + r + +/ - + r r +JLY + �f�E �4 iF)EiE 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 9A0000 1000 + Baseline Conditions _ _ _ _ Alternative 3c (5) + / , / ++ + / + + # + x *Y X .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 �40000 L f0 U co 0 1000 + Baseline Conditions x _ _ _ _ Alternative 3c (6) .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 in U CD n 1111, 1000 + Baseline Conditions _ _ _ _ Alternative 3c (7) / + / / / / / ++ +'. + + *0 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 Owl Y [O Q) cl- 1000 + Baseline Conditions .x _ _ _ _ Alternative 3c (B) 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 U Y 00 CD 0- 1000 + Baseline Conditions .x - _ - - Alternative 3c (9) / X 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 910000 1000 + Baseline Conditions ..x _ _ _ _ Alternative 3c (10) 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 2 1111 1000 + Baseline Conditions x _ _ _ _ Alternative 3d (1) + xE X Xc I A 001 .01 .10 .50 .90 .99 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) • • • 100000 ;dill (o a.) n 1000 + Baseline Conditions .x _ _ _ — Alternative 3d (2) - y � ++I}H + + 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 c- ro r- U CO - CD �v n 1000 + Baseline Conditions x _ _ _ _ Alternative 3d (3) 001 .01 .10 .50 .90 .99 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 U d10000 L C0 L U 0 1000 + Baseline Conditions X - - _ - Alternative 3d (4) / / ++ +'�/ + + + } 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 v- L fo c- U W O (10 CD a 1111 1000 + Baseline Conditions _ _ _ _ Alternative 3d (5) , , + , , ++ + �. 0.1 + + + + XE X- �E-3E iE 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 �40000 L Co cj cn 0 N/ ro cu 1000 + Baseline Conditions x _ _ _ _ Alternative 3d (6) 001 .01 .10 .50 .90 .99 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 d10000 Y CO U n 101410 + Baseline Conditions _ _ _ _ Alternative 3d (7) + + + + X X x I �f 001 .01 .10 .50 .90 .99 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) e 1011111410 ro CD n 1111, 1000 + Baseline Conditions _ _ _ _ Alternative 3d (8) / , ++ �E + + 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 111 I IZIl �0000 1000 + Baseline Conditions _ _ _ _ Alternative 3d (9) / i X / / * * X" +1 x* 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 Ulm, L CO U Ln 0 1000 + Baseline Conditions X _ _ _ _ Alternative 3d (10) + / / / X / �.Y i X + + + �* 001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 1000 Baseline Conditions Alternative 4a ' + , .001 .01 .10 .50 .90 .99 .999 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) 100000 y-- co N CL 1111 1000 + _ Baseline Conditions Alternative 4b 7 .001 .01 .10 .50 .90 .99 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flo;s in the Cedar River at Renton (USGS gage 12119000) ... 100000 M0000 1000 Baseline Conditions y _ _ _ _ _ Alternative 4c + 001 .01 .10 .50 .90 .99 Cumulative Probability (P) Masonry Dam Flood Operations Study Simulated Flows in the Cedar River at Renton (USGS gage 12119000) ... FLOOD EVENT HYDROGRAPHS 14000 1 PI 8000 a� U 6000 I/1 'l l Fill Base Case Simulated Flows Altemative 2b Simulated Flows I I I I I I I l I I 11/ 1 /90 11/8/90 11/ 15/90 11 /22/90 11/29/90 12/6/90 Midnight (0001 A Vn on Date Masonry Dam Flood Operations Shady - Event Flow Hydrograph Discharge in Cedar River at Landsburg (USGS gage 12117500) 12/13/90 printed 12/04/97 :1 1 14000 12000 10000 8000 U 6000 111 0 Base Case Simulated Flows Alternative 2b Simulated Flows I I I I I r III r \ I 1 I I I I 1 � 1 11 / 1 /90 11 /8/90 11 / 15/90 11 /22/90 11 /29/90 12/6/90 Midnight (0001 A1P on Date Masonry Dan Flood Operations Study - Event Flow Hydrograph a scharge in Cedar River at Renton(USGS gage 12119000) 12/13/90 printed 12/04/97 12000 8000 a� 6000 He "I 11/ ON Base Case Simulated Flows Altemative 3a Sinwlated Flows If 1 _ r I It 4.11 , I I 1 I I I � I I I � 1 I \ ✓ r 1 V _ � 1 1 tti J 11 / 1 /90 11 /8/90 11 / 15/90 11 /22/90 11 /29/90 12/6/90 NEdnight (0001 AM) on Date Masonry Darn Flood Operations Study - Event Flow Hydrograph Discharge in Cedar River at Landsburg (USGS gage 12117500) 12/13/90 printed 12/04t97 14000 12000 b a� 8000 rA M6,312 1/1 n Base Case Simulated Flows Altemative 3a Simulated Flows r t' Jl � I � � � 1 11/ 1/90 11/8/90 11/ 15/90 11/22/90 11/29/90 12/6/90 Midnight (0001 A" on Date Masonry Dam Flood Operations Study - Event Flow Hydrograph Discharge in Cedar River at Renton(USGS gage 12119000) 12/13/90 printed 1 v04/97 14000 8000 a� U 6000 2000 M Base Case Simulated Flows Altemative 2b Simuated Flows I to 1 1 — _ 11 I �f I Il I 1 11 / 1 /95 11/8/95 11/ 15/95 11/22/95 11/29/95 12/6/95 Midnight (0001 AN1) on Date Masonry Darn Flood Operations Study - Event Flow Hydrograph Discharge in Cedar River at Landsburg (USGS gage 12117500) 12/13/95 printed 12/(9/97 •111 14000 12000 //1/ 8000 cn 6000 1_I 111 n Base Case Simulated Flows Alternative 2b Sinadated Flows I �L 1 � 11 / 1 /9 5 11 / 8/95 11 / 15/95 11 /22/95 11 /29/95 12/6/95 Midnight (0001 AM) on Date Masonry Dam Flood Operations Study - Event Flow Hydrograph Discharge in Cedar River at Renton(USGS gage 12119000) 12/13/95 printed 12A)4/97 14000 8000 a� �bn U 6000 2000 as Base Case Simulated Flows Alternative 3a Simulated Flows I r I ' I I I I l� 1 1/ 1 /95 11/8/95 11/ 15/95 11/22/95 11/29/95 12/6/95 Midnight (0001 AM) on Date Masonry Dam Flood Operations Study - Event Flow Hydrograph Discharge in Cedar River at Landsburg (USGS gage 12117500) 12/13/95 printed 12/04/97 •111 14000 12000 1A111 a� 8000 6000 i P11 111 n Base Case Simulated Flows Alternative 3a Sinndated Flows 1 I I I 1 11 / 1 /9 5 11 /8/95 11 / 15/95 11 /22/95 11 /29/95 12/6/95 Midnight (0001 A1V1 on Date Masonry Dam Flood Operations Study - Event Flow Hydrograph Discharge in Cedar River at Renton(USGS gage 12119000) 12/13/95 printed 12/04/97 14000 12000 TOM 8000 a� U 6000 PI 1 2000 "I Base Case Simulated Flows Altemadve 2b Simulated Flows t r 1 / 15/96 1 /22/96 1 /29/96 2/5/96 2/ 12/96 2/ 19/96 Midnight (0001 AM) on Date Masonry Dam Flood Operations Study - Event Flow Hydrogiaph Discharge in Cedar River at Landsbtwg (USGS gage 12117500) 2/26/96 printed 12/04/97 14000 12000 a� 8000 U 6000 9111 111 n Base Case Simulated Flows Alternative 2b Simulated Flows 1 1 ti I% I 1 1 ti v r♦ �r1� � � V v t y 1 / 15/96 1 /22/96 1 /29/96 2/5/96 2/12/96 2/19/96 Midnight (0001 AM) on Date Masonry Dam Flood Operations Study - Event Flow Hydrograph Discharge in Cedar River at Renton(USGS gage 12119000) 2/26/96 printed 12/04/97 m 14000 12000 8000 0 to 6000 2000 n Base Case Simulated Flows Alternative 3a Simulated Flows r� 1� II .. 1 / 15/96 1 /22/96 1 /29/96 2/5/96 2/ 12/96 2/ 19/96 Midnight (0001 A v1 on Date Masonry Dam Flood Operations Shady - Event Flow Hydrograph Discharge in Cedar River at Landsbtwg (USGS gage 12117500) 2/26/96 printed 12/04/97 •111 14000 12000 1-r111 a� 8000 U 6000 2000 [17 Base Case Simulated Flows Alternative 3a Simulated Flows I I I� 4 1 r 1 / 15/96 1 /22/96 1 /29/96 2/5/96 2/12/96 2/19/96 Midnight (0001 AM) on Date Masonry Dam Flood Operations Study - Event Flow Hydrograph Discharge in Cedar River at Renton(USGS gage 1211.9000) 2/26/96 printed 12/04/97 ANNUAL FLOW DURATION CURVES LANDSBURG 14000 12000 10000 8000 a� U 6000 M U1 7 XA �e --.}.-- Base Case Simulated Flows —p — Altema6ve 4b Simulated Flows 105 10-4 103 102 101 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow DUration Analysis Discharge in Cedar River at Landsbtrg 10° printed 12/04/97 14000 12000 \ 10000 8000 a� U A 6000 I11 2000 U —+ Base Case Simulated Flows p — Altemative la Simulated Flows .q 10) 104 10-3 10 2 10-1 10° Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsb> ug printed 12/03/97 14000 12000 8000 aD U 6000 /11 111 1❑ --+ Base Case Sunulated Flows —p — Alternative I Shmdated Flows IA 10-5 10 4 10 3 10-2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg printed 12/03/97 14000 12000 10000 8000 a� U 6000 111 11/ n —+ Base Case SinmWed Flows — — Alternative 2a Simulated Flows 10 5 104 10-3 10-2 10 1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg 100 printed 12/03/97 14000 111 an 6000 .11 1❑ —+ Base Case Simulated Flows 0 — Alternative 2b Simulated Flows ` 1\ 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Shady - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg 100 printed 12ro3w7 14000 12000 Ar 10000 8000 U bq 6000 2000 m —+ Base Case SinWated Flows —d — Altemative 2c Shadated Flows 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Hood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg 100 printed 12/03/97 14000 12000 8000 a� cn 6000 9111 111 1❑ -+-_ Base Case Simmiated FloNks —p — Alternative 3a Simulated Flows \ 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Darn Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg 100 printed 12/03/97 14000 :111 a� U 6000 191 111 1❑ -- ---- 4 + Base Case Simulated Flows —& — Altemative 3b Simulated Flows 1 — 10 5 104 10-3 10-2 1 l Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg 100 printed 12/03/97 + Base Case Simulated Flows —& — Altemative 3b Simulated Flows 1 — 10 5 104 10-3 10-2 1 l Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg 100 printed 12/03/97 12000 8000 6000 I/1 111 Id --+ — Base Case Simulated Flows Alternative 4a Simulated Flows *--A " i� �-, 10 5 104 10-3 10 2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg 100 printed 12/03/97 14000 12000 10000 8000 6000 111 7 --+ — Base Case Simulated Flows p — Alternative 4c Simulated Flows 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Landsburg 100 printed 12/03/97 OCTOBER - MARCH FLOW DURATION CURVES LANDSBURG 12000 8000 U A 6000 2000 0 --+ Base Case Simulated Flows Altemafive la Sirmflated Flows %4 10 5 10-4 10-3 10 2 101 Exceedance Probability (p) Masonry Daln Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at LandsbL g (USGS gage 12117500) 100 printed 12A)4/97 14000 12000 NMI 6000 i11 2000 0 --+ Base Case Sirrndated Flows A — Altemative lb Sinudated Flows �Q 10-5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Landsburg (USGS gage 12117500) 10, printed 12/04/97 14000 n \ 12000 .� 8000 NMI 1/1 0 —+ Base Case Sinulated Flows —,A — Alternative 2a Sirmilated Flows 10-5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Landsburg (USGS gage 12117500) 10O printed 12/04/97 14000 12000 n \ 10000 2000 m ,4 'A —+ Base Case SirmiWed Flows Altemative 2b Simulated Flows 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Dimation Analysis (October - March) Discharge in Cedar River at Landsbtwg (USGS gage 12117500) 100 printed 12A)4/97 14000 12000 8000 a� U 6000 2000 0 —+ Base Case Sinulated Flows --A — Altemative 2c Simulated Flows 10-5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Landsburg (USGS gage 12117500) 10O printed 12/04/97 ffirolf-TIM 8000 U 6000 111 a + Base Case Simulated Flows —d — Alternative 3a Sirmdated Flows e� `w. 0 b., 10-5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Darn Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12/Al4/97 14000 12000 8000 an U 6000 0 0 —+ Base Case Simulated Flows —d — Altemative 3b SimWated Flows n 4 A, 10 5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12J04/97 111 8000 NMI P 111 m W 0 —+ Base Case Sinwlated Flows —.A — Altemative 4a Simulated Flows 10-5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Landsbu g (USGS gage 12117500) 100 printed 12A)4/97 14000 12000 8000 a� U 6000 m —+ Base Case simulated Flows Alternative 4b simulated Flows .Q 10-5 104 10-3 10-2 10- l Exceedance Probability (p) Masonry Darn Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at l.andsburg (USGS gage 12117500) 100 printed 12/04/97 14000 12000 n 10000 8000 6000 PI 1 .11 10 --+ — Base Case Simulated Flows —A — Altemative 4c Sirr"ated Flows ,A 10-5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Landsbtug (USGS gage 12117500) 100 printed 12/04/97 APRIL - JUNE FLOW DURATION CURVES LANDSBURG 14000 12000 10000 8000 U N c� U 6000 4000 2000 0 —+ Base Case Sinulated Flows —A — Alternative laSimuilatedFlows 10 5 104 10-3 10 2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - Jtme) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12/04/97 14000 12000 10000 8000 a� U 6000 4000 2000 0 —+ Base Case Simulated Flows -- p — Alternative 1 b Simulated Flows 10-5 10-4 10-3 10-2 10- t Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Laridsbtwg (USGS gage 12117500) 100 printed 12/04/97 14000 12000 10000 8000 a� �n U 6000 4000 2000 0 —+ Base Case Sinnilated Flows Alternative 2a Simulated Flows 10-5 10-4 10-3 10-2 10- I Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Landsburg (USG'S gage 12117500) 10, printed 12/04/97 14000 12000 10000 8000 a� U 6000 4000 2000 0 --+ Base Case Simulated Flows --p — Altemadve 2b Simulated Flows 10--) 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12/04/97 14000 12000 10000 8000 a� U 6000 4000 2000 0 —+ Base Case Shy dated Flows --p — Altemadve 2c Sinuilated Flows 10-5 104 10-3 10-2 10- l Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Landsburg (USGS gage 12117500) 10, printed 12/04/97 14000 12000 8000 a� U 6000 4000 111 0 —+ Base Case Simulated Flows ---A — Alternative 3a Simulated Flows 10-5 10-4 10-3 10 2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Landsbtu-g (USGS gage 12117500) 100 printed 12A)4/97 14000 12000 8000 a� U 6000 2000 m —.}.-- Base Case Simulated Flows --A — Altemative 3b Simulated Flows 10 5 10 `t 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Dtuation Analysis (April - June) Discharge in Cedar River at Landsbtug (USGS gage 12117500) 10° printed 12/04/97 111 a� U 6000 111 V —+ Base Case Sirri lated Flows d — Alteanative 4a SimWated Flows 10 5 104 10-3 10 2 10 1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Landsburg (USGS gage 12117500) 10() printed 12/04/97 14000 12000 10000 8000 a� �r U 6000 4000 2000 0 —+ Base Case Sirrnilated Flows — Alternative 4b Simulated Flows 10-) 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12/04/97 14000 a� U 6000 IJ 1 0 —+ Base Case Sinulated Flows —p — Altema6ve 4c Sinwlated Flows 10' 10-4 10 3 10 2 10-1 Exceedance Probability (p) Masonry Darn Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Landsbtug (USGS gage 12117500) 100 printed 12/04/97 DULY - SEPTEM 3ER FLOW DURATION CURVES LANDSBURG 14000 12000 10000 8000 U U U 6000 4000 2000 0 —+ Base Case Simulated Flows --� — Alternative la Simulated Flows 10-5 104 10-3 10-2 10 l Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12A)4/97 14000 w 8000 U N U Q 6000 111 0 —+-- Base Case Sirmrlated Flows —d — Alternative ]b simulated Flows 10-5 10-4 10-3 10-2 10- l 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Landsbtug (USGS gage 12117500) printed 12/04/97 14000 12000 10000 8000 a� on v 6000 4000 2000 0 —+ Base Case Simulated Flows —,p — Altemative 2a Simulated Flox%s 10 5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Landsbiug (USGS gage 12117500) 100 printed 12/04/97 14000 12000 10000 8000 a� bn U 6000 4000 2000 0 —+-- Base Case Sinuilated Flows Alternative 2b Sinudated Flows 10-5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12/04/97 14000 12000 10000 w 8000 U N U 6000 4000 2000 0 —+ Base Case simulated Flows Alterative 2c SinUated Flows 10-5 104 10-3 10-2 10- l Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cechar River at Landsburg (USGS gage 12117500) 10O printed 12/04/97 14000 12000 10000 8000 U U U 6000 4000 2000 0 — + Base Case Sirmflated Flows —p — Altemative 3a Sirrnrlated Flows 10-5 10 4 10 3 10 2 10 1 Fxceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duation Analysis (July - September) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12/04/97 14000 12000 8000 a� cn U 6000 'l l 0 —+ Base Case Simudated Flows _d — Altemmtive 3b Simulated Flows 10 5 10-4 10-3 10 2 10 I Exceedance Probability (p) Masonry Dam Flood Operations Shady - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Landsbtwg (USGS gage 12117500) 10() printed 12/04/97 14000 12000 10000 8000 U tU cc U 6000 4000 2000 0 —+ Base Case Sirrnilated Flows —d — Altematiive 4a Siirnilated Flows 10 5 104 10-3 10 2 l 0- l Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Landsbtug (USGS gage 12117500) 10O printed 12/04/97 14000 12000 10000 8000 a� U 6000 4000 2000 0 — + Base Case Simulated Flows —p — Alternative 4b Simulated Flows 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Dtlration Analysis (July - September) Discharge in Cedar River at Landsbu g (USGS gage 12117500) 10, printed 12/04/97 14000 12000 10000 w 8000 U U bn U Q 6000 4000 2000 0 —+ — Base Case Sinnilated Flows —p — Altemative 4c simulated Flows 10 5 104 10-3 10-2 10- I Exceedance Probability (p) Masonry Dahl Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Landsburg (USGS gage 12117500) 100 printed 12/04/97 FLOW DURATION CURVES 16000 14000 12000 \ 10000 a� 8000 U ti 1= 111 C1] —+ Base Case simulated Flows Alternative 4b simulated Flows 10-5 10, 10-3 10-2 10 1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Renton (USGS gage 12119000) m printed 12/04/97 16000 14000 12000 10000 a� 8000 U 6000 4000 2000 0 --+— Base Case Simulated Flows —p — Alternative la Sirrailated Flows 10 5 10-4 10-3 10 2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Renton (USGS gage 12119000) printed 121C)3/97 16000 14000 12000 10000 a� 8000 U 6000 4000 2000 0 .} Base Case Sint"ed Flows Alternative lb Simulated Flows 10-5 10-4 10-3 10 2 10-1 10, ExceedanceProbability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Renton (USGS gage 12119000) printed 12ro3/97 12000 /111 `i 8000 U 6000 2000 1❑ A, A 16, ..�. -- Base Case Simudated Flows — d — Alterative 2a Simulated Flows 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Shady - Annual Flow Duration Analysis Discharge in Cedar River at Renton (USGS gage 12119000) 100 printed 12/03/97 16000 14000 12000 \ 10000 8000 U 6000 m --+-- Base Case Sin mated Flows —A — Alternative 2b simulated Flows 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Renton (LJSGS gage 12119000) 10° printed 12/03/97 16000 14000 12000 10000 8000 U 1- :I'11' 111 1 �.�._ _ Base Case Simulated Flows Altmmfive 2c Simulated Flows A l 0 104 10-3 10-2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/03/97 •111 12000 a� 8000 U f-� 6000 .1/ U --+ — Base Case Simulated Flows —A -.- Altemative 3a Simulated Flows �e '4 10-5 104 10-3 10 2 10 1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Renton (USGS gage 12119000) 100 printed 12/03/97 1600( 14000 12000 U N 8000 U NOR 4000 wil 1 H Ie A ems_ -- + Base Case Simulated Flows -••-p - Alternative 3b Simulated Flows 10-5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Renton (USGS gage 12119000) 10() printed 12/03/97 16000 14000 12000 10000 8000 U 6000 111 n �4 -,o --+ Base Case Simulated Flows Altemative 4a Sirrnilated Flows 10 5 104 10-3 10 2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Annual Flow Duration Analysis Discharge in Cedar River at Renton (USGS gage 12119000) 100 printed 12/03/97 16000 14000 12000 10000 8000 rA 6000 n --+ Base Case Sirn fated Flows Altemative 4c Simulated Flows �Q 0 10-5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Darn Flood Operations Study - Annual Flow Dmation Analysis Discharge in Cedar River at Renton (USGS gage 12119000) 10() printed 12/03/97 OCTOBER - MARCH FLOW DURATION CURVES RENTON 16000 14000 12000 10000 a� 8000 U 6000 4000 2000 0 — + Base Case Simulated Flows —p — Altemative la Sir n fated Flows .4 10-5 104 10-3 10-2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duation Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/tk1/97 16000 14000 12000 10000 8000 CA 6000 4000 2000 0 + Base Case Simulated Flows —p — Alternative lb Simulated Flows .4 10-5 104 10-3 10-2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 14000 12000 a� 8000 rA 111 2000 0 —+ Base Case Simulated Flows 4 —A — Alternative 2a Simulated Flows �o 10 5 104 10-3 10-2 10 1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) 10° printed 12/04/97 16000 14000 4 12000 �. 10000 8000 i 1' 1 7 —+ Base Case Sinn fated Flows ---A — Alternative 2b Sinudated Flows 10 5 104 10-3 10-2 10-1 Exceedance Probability (p) Masonry Darn Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) 100 printed 12/04/97 16000 14000 4 12000 P111` 8000 U N 1- 4000 2000 0 --+ Base Case Simulated Flows --A — Altemative 2c Simulated Flows 10 5 104 10-3 10-2 10 1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) 10p pruned 12A 4/97 109111111 14000 12000 a� 8000 Ln 6000 1' 1 a —+ Base Case Sinndated Flows p — Altemative 3a Simulated Flows 10) 10-4 10-3 10-2 10- l Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Dtlration Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) 10, printed 12/t}4/97 14000 12000 8000 rA 6000 0 —. f.-- Base Case Simulated Flows —p — Alternative 3b Simulated Flows 10 5 10-4 10-3 10-2 10-1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) 100 printed 12/04/97 16000 14000 12000 \ 8000 Ln 6000 2000 0 — + Base Case Simulated Flows —p — Altmofive 4a Simulated Flows 10-5 104 10-3 10-2 10-1 Fxceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) 10() printed 12/04/97 16000 14000 12000 I- c6 a� 8000 CA 1= PI f /11 ID + Base Case Sinubted Flows --d — Alternative 4b SimWated Flows A, A 10-5 10-4 10-3 10 2 10 t Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) 10, printed 12/04/97 16000 'IC 14000 12000 a� 8000 U 6000 m M —+ Base Case SinuUted Flows --A — Alternative 4c SimWated Flows 10-5 10-4 10-3 10 2 10 1 Exceeciance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Dmation Analysis (October - March) Discharge in Cedar River at Renton (USGS gage 12119000) 100 printed 12/04/97 o FLOW DURATION CURVES RENTON 16000 14000 12000 10000 U U 8000 U 6000 4000 2000 0 —+ Base Case Simmdated Flows — Alternative la Simulated Flms 10-' 104 10-3 10.2 10- l 10° Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow DtuVion Analysis (April - June) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12A)4/97 16000 14000 12000 10000 a� 8000 U 6000 4000 2000 0 —+ — Base Case Sinndated Flows — Alternative lb Simulated Flows 10-5 10-4 10-3 10 2 IT 1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 16000 14000 12000 10000 U N 8000 U 6000 4000 2000 0 —+ Base Case Simulated Flows --p — Alternative 2a Simulated Floes 10-5 10-4 10-3 10-2 10 1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 16000 14000 12000 10000 w U U 8000 .0 CA U 6000 4000 2000 0 _—+ Base Case Simulated Flows —p — Alternative 2b Simulated Flows 10 5 104 10-3 10 2 10 1 10�� Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12A)4/97 16000 14000 12000 10000 a� 8000 v 6000 4000 2000 0 + Base Case Sinndated Flows Altem five 2c Sinadated Flows 10 10-4 10-3 10-2 10-1 10° Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 •111 14000 12000 `i a� 8000 U R 2000 0 —+ Base Case Sicmdated Flows —A — Altemative 3a Shnulated Flows 0 _ - -A — - - --- --- - - 10-5 10-4 10-3 10-2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Thtration Analysis (April - June) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/tk1/97 •111 14000 12000 a� 8000 U rUl O I, 2000 M —.f.— Base Case Sindated Flows — Alternative 3b Simulated Flows 10 5 10-4 10-3 10-2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duation Analysis (April - June) P;scharge in Cedar River at Renton (USGS gage 12119000) printed 1 v04/97 14000 12000 N 8000 U 1- 2000 A —+ Base Case Simtilated Flows A — Alternative 4a Simulated Flows a - - — 10-5 104 10-3 10-2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Shady - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12A)4/97 :111 14000 12000 w U U 8000 U 6000 2000 m —+ Base Case Sitmdated Flows --.A — Altemative 4b Sini dated Flows P71--A- 10 5 10-4 10-3 10.2 10-1 l 0° Exceedance Probability (p) Masonry Dam Flood Operations Shady - Seasonal Flow Duration Analysis (April - Jtme) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 •11/ 14000 12000 10000 a� 8000 U H 6000 1511 7 —+ Base Case Simulated Flows —p — Alterative 4c Simulated Flows 10 5 10 10-3 10 2 10-1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (April - June) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 DULY - SEPTEM 3ER FLOW DURATION CURVES RENTON 16000 14000 12000 10000 a� 8000 U ,,rtir 6000 4000 2000 0 —+-- Base Case Sinwlated Flows —p — Alternative la Sirmflated Flows 10-) 104 10-3 10 2 10-1 10�� Exceedance Probability (p) Masonry Darn Flood Operations Shady - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/tl4/97 16000 14000 12000 10000 a� 8000 U y 6000 4000 2000 0 —+ Base Case Sinwlated Flows --A — Alternative lb simulated Floes 10 ) 10-4 10-3 10-2 10 1 100 Exceedance Probability (p) Masonry Darn Flood Operations Shady - Seasonal Flow Dwation Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12A)4/97 16000 14000 12000 10000 a� 8000 U 6000 4000 2000 0 —+ Base Case Simulated Flows --.A — Altemative 2a Simulated Flows 10 5 10-4 10-3 10 2 10 t 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Din-ation Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12A)4/97 16000 14000 12000 10000 a� 8000 CA CU 6000 4000 2000 0 —+ Base Case Simulated Flows .-0 — Alternative 2b Simulated Flows 10 5 104 10-3 10 2 10 t Fxceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 16000 14000 12000 10000 a� 8000 U 6000 4000 2000 0 —+ Base Case Sirn elated Flows .—A — Alternative 2c Sirn alated Flows 10 5 104 10-3 10 2 10-1 10�� Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12A)4/97 16000 14000 12000 a� 8000 U 6000 H 1�11 2000 0 —+ Base Case Simmdated Flows --d — Altemative 3a Simulated Flows A- " ---- - - --- --- - - 10 5 104 10-3 10-2 10-1 10° Exceeclance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 •111 14000 12000 U 8000 U N 9 011E I PI I 0 Base Case Simudated Flows p — Alternative 3b Simulated Flows 10 5 104 10 3 10-2 10 1 100 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duration Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12A 4/97 16000 14000 12000 10000 a� 8000 U ,,terr L--a 6000 4000 2000 0 —.}.-- Base Case Sinndated Flows —,p — Alternative 4a Simulated Flows 10-5 104 10-3 10-2 10-1 1 Ot1 Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duratipn Analysis (July - September) Discharge in Cedar River at Renton (USGS 12119000) printed 12/04/97 16000 14000 12000 10000 a� 8000 U 6000 4000 2000 0 —+ Base Case Sinwlated Flows -_--A — Alternative 4b Simulated Flows 10-5 104 10-3 10 2 10-1 10� Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Dm-ation Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97 16000 14000 12000 10000 a� 8000 U 6000 4000 2000 0 --+ Base Case Sinnilated Flows — d — Alternative 4c SkmAated Flows 10) 104 10-3 10 2 10- l 10�' Exceedance Probability (p) Masonry Dam Flood Operations Study - Seasonal Flow Duation Analysis (July - September) Discharge in Cedar River at Renton (USGS gage 12119000) printed 12/04/97