FLOOD00106

• County: Statewide
• Title: Hydrologic Engineering Methods for Water Resources Development Volume 5
• Date: 3/1/1975
• Prepared For: US
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Educational/Technical/Reference Information

FIGURE 3.05
STANDARD PROJECT FLOOD COMPUTATION

Computation of total water : Computation of : Computation of runoff
Hour: Basin : 340F :Precip. : : Snow- :Total : water excess : Unit : Base : Total
:precipitation: elev. :as rain: Rain :melt : ilP : ilL : l:L : We : graph : flow : runoff
: Percent: in. : feet :percent: in. : in. : in. : in. : in. : in. :Mean flows 1,000 c.f.s.
0 16.00
6 0.8 0.16 8,800 83 .13 0.06 0.19 0.19 16.19 0 5.5 1.0 1.0
12 6.9 1.35 8,800 83 1.12 0.16 1.28 0.9017.09 0.38 33.8 1.0 3.1
18 12.1 2.36 9,100 86 2.03 0.26 2.29 1.33 18.42 0.96 28.2 1.0 19.1
24 1.0 0.20 9,100 86 0.17 0.06 0.23 0.23 18.65 0 12.4 1.0 44.2
30 0.3 0.06 8,800 83 0.05 0.10 0.15 0.15 18.80 0 7.9 1.1 32.9
w 36 0 0 8,800 83 0 0.12 0.12 0.12 18.92 0 5.7 1.2 16.1
I 42 1.5 0.29 10,200 97 0.28 0.12 0.40 0.40 19.32 0 4.4 1.3 11.0
....
c.n 48 11.6 2.26 10,200 97 2.19 0.22 2.41 1.32 20.64 1.09 3.5 1.4 14.5
54 10.3 2.01 10,500 98 1.97 0.20 2.17 1.20 21.84 0.97 2.8 1.5 49.2
60 12.9 2.52 10,500 98 2.47 0.24 2.71 1.3923.23 1.32 2.2 1.6 76.8
66 21.3 4.15 10,900 99 4.11 0.18 4.29 1.83 25.06 2.46 1.6 1.8 104.3
72 13.9 2.71 10,900 99 2.68 0.12 2.80 1.39 26.45 1.41 1.0 2.0 153.5
78 4.9 0.95 10,300 97 0.92 0.08 1.00 0.6727.12 0.33 0.5 2.2 153.2
84 1.4 0.27 10,300 97 0.26 0.08 0.34 0.31 27.43 0.03 0.2 2.3 105.8
90 1.1 0.21 9,600 92 0.19 0 0.19 0.19 27.62 0 2.4 65.8
96 2.5 44.8
102 2.5 34.1
108 2.5 27.0
114 2.5 21.5
120 2.5 16.8
126 2.5 12.6
132 2.5 8.9
138 2.5 6.0
144 2.5 4.1
150 2.5 3.0
156 2.5 2.6
Tota1100.0 19.50 18.57 2.0020.57 11.62 8.95 109.7 50.31,031.9