a. Compute the Unit Hydrograph (UH) in m3/s per mm for the watershed. Use straight-line method for base flow separation. No need to plot. Just show the tabular values. Time (hour) Streamflow (m³/s) 1 132 2 250 3 400 4 740 5 530 6 420 7 350 8 220 9 132 b. The same watershed was subjected to 3 hours of rainfall with the corresponding excess precipitation per hour: P₁-14 mm, P2-15 mm and P3=11 mm. Using the UH computed from the previous item, determine the actual streamflow hydrograph.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A watershed (area = 5,000 km2) was subjected to a 3-hr rainfall.

a. Compute the Unit Hydrograph (UH) in m3/s per mm for the watershed. Use straight-line
method for base flow separation. No need to plot. Just show the tabular values.
Time (hour)
Streamflow (m³/s)
1
132
2
250
3
400
4
740
5
530
6
420
7
350
8
220
9
132
b. The same watershed was subjected to 3 hours of rainfall with the corresponding excess
precipitation per hour: P₁=14 mm, P2=15 mm and P3=11 mm. Using the UH computed from the
previous item, determine the actual streamflow hydrograph.
Transcribed Image Text:a. Compute the Unit Hydrograph (UH) in m3/s per mm for the watershed. Use straight-line method for base flow separation. No need to plot. Just show the tabular values. Time (hour) Streamflow (m³/s) 1 132 2 250 3 400 4 740 5 530 6 420 7 350 8 220 9 132 b. The same watershed was subjected to 3 hours of rainfall with the corresponding excess precipitation per hour: P₁=14 mm, P2=15 mm and P3=11 mm. Using the UH computed from the previous item, determine the actual streamflow hydrograph.
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