GATE CE 2025 Set 2 — Question 59
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Water Resources Engineering → Hydrographs & Groundwater → Unit Hydrographs
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Question
The peak of flood hydrograph due to a 3-hour duration storm in a catchment is . The total rainfall depth is . It can be assumed that the average infiltration loss is . There are no other losses. The base flow is constant at a value of .The peak value of the 3-hour unit hydrograph for this catchment (in ) is ______ (round off to the nearest integer).
Correct answer
25 to 25
Solution
1.Calculate Total Infiltration Loss:
Duration () = Infiltration rate () =
Total loss =
2.Calculate Effective Rainfall ():
Total rainfall () = 3.Calculate Peak of Direct Runoff Hydrograph ():
Peak of Flood Hydrograph () = Base flow () =
4.Calculate Peak of Unit Hydrograph ():
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