Question

0
دیا

The ordinates of a 3-hour unit hydrograph
for a small catchment are given below:
Time: Unit graph ordinates:
(hour)
(m/s)
0
1.5
6
4.5
9
18.6
12
12.0
15
9.4
18
4.6
21
2.3
24
0.8
27
If the design storm produces net rainfall
depths of 4.6 cm and 3.5 cm in successive
unit periods, and if the base flow is 2 mº/s,
then the peak flood flow (in mº/s) will
nearly be
a) 270
b) 130
c) 90
d) 86
[ES 93]​

Answer 1

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