Two storms, each of 4-hr duration and having rainfall excess of 3.0 and 2.0 cm, respectively, occur successively. The 2 cm excess rainfall follows the 3 cm rain. The ordinates of the 4- hr unit hydrograph for a catchment are given in the following table, Calculate the resulting Direct Runoff Hydrograph for the first and second period.
Two storms, each of 4-hr duration and having rainfall excess of 3.0 and 2.0 cm, respectively, occur successively. The 2 cm excess rainfall follows the 3 cm rain. The ordinates of the 4- hr unit hydrograph for a catchment are given in the following table, Calculate the resulting Direct Runoff Hydrograph for the first and second period.
Chapter2: Loads On Structures
Section: Chapter Questions
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Transcribed Image Text:10. Two storms, each of 4-hr duration and having rainfall excess of 3.0 and 2.0 cm, respectively,
occur successively. The 2 cm excess rainfall follows the 3 cm rain. The ordinates of the 4-
hr unit hydrograph for a catchment are given in the following table, Calculate the resulting
Direct Runoff Hydrograph for the first and second period.
Time (hr)
Unit Hydrograph
(m^3/s)
0
0
4
20
8
30
12
55
16
85
20
24
115 85
28
65
32
45
36
30
40
20
44
10
48
0
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