FLOOD00672

• County: Clear Creek
• Title: Hydrologic Analysis Clear Creek
• Date: 2/1/1998
• Prepared For: Clear Creek County
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

. South Clear Creek at confluence with Clear Creek
Recurrence Mean
Interval Regression D.A. Slope Peak Flow
(years) Equation (sq. mi.) (ft/ft) (cfs)
2 O=11.0(A)^,663*(S+ 1 )^3.465 30,7 0,322 280
5 O=17.9(A)^.677*(S+ 1 )^2.739 30.7 0.322 391
10 O=23.0(A)^.685*(S+ 1 )^2.364 30,7 0.322 465
50 O=34.5(A)^.700*(S+ 1)^1.768 30.7 0.322 621
100 O=39.5(A)^.706*(S+ 1 )^1.577 30.7 0,322 688
500 O=51.5(A)^.715*(S+ 1 )^1,209 30.7 0,322 835
Clear Creek just upstream of confluence with West Fork Clear Creek
Recurrence Mean
Interval Regression D.A. Slope Peak Flow
(years) Equation (sq. mi.) (ftIft) (cfs)
2 O=11.0(A)^.663*(S+ 1 )^3.465 86 0.401 678
5 O=17.9(A)^.677*(S+ 1 )^2.739 86 0.401 920
10 O=23.0(A)^.685*(S+ 1 )^2.364 86 0.401 1079
50 O=34.5(A)^.700*(S+ 1 )^1,768 86 0.401 1415
100 O=39.5(A)^.706*(S+ 1 )^1.577 86 0.401 1561
. 500 O=51.5(A)^.715*(S+ 1 )^1.209 86 0.401 1871
Clear Creek near Lawson
Recurrence Mean
Interval Regression D.A. Slope Peak Flow
(years) Equation (sq. mi.) (ft/ft) (cfs)
2 O=11.0(A)^.663*(S+ 1 )^3.465 144.9 0.406 970
5 O=17.9(A)^.677*(S+ 1 )^2.739 144.9 0.406 1322
10 O=23.0(A)^.685*(S+ 1 )^2.364 144.9 0.406 1556
50 O=34.5(A)^.700*(S+ 1 )^1. 768 144,9 0.406 2052
100 O=39.5(A)^. 706*(S+ 1 )^1.577 144.9 0.406 2268
500 O=51.5(A)^.715*(S+ 1 )^1.209 144.9 0.406 2728
Chicago Creek at confluence with Clear Creek
Recurrence Mean
Interval Regression D.A. Slope Peak Flow
(years) Equation (sq. mi.) (ft/ft) (cfs)
2 O=11.0(A)^.663*(8+ 1 )^3.465 48 0.360 416
5 O=17,9(A)^.677*(S+ 1 )^2. 739 48 0.360 571
10 O=23.0(A)^,68S*(8+ 1 )^2.364 48 0,360 67S
SO O=34,S(A)^.700*(S+ 1 )^1,768 48 0.360 893
. 100 O=39.S(A)^. 706*(8+ 1 )^1.S77 48 0.360 987
SOO O=S1,S(A)^,715*(S+1)^1.209 48 0.360 1189