GATE CE 2021 Set 2 — Question 32
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Water Resources Engineering → Hydrographs & Groundwater → Unit Hydrographs
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Question
A -hour unit hydrograph (of cm excess rainfall) of a catchment is of a triangular shape with a base width of hour and a peak discharge of m/s. The area of the catchment (in km, round off to the nearest integer) is ___________
Correct answer
595 to 598
Solution
Given:
Base width of triangular unit hydrograph, hours
Peak discharge, m/s
Excess rainfall, cm mThe volume of runoff is equal to the area under the unit hydrograph:
Also,
Converting to km:
Rounding off to the nearest integer, the area is km.
Base width of triangular unit hydrograph, hours
Peak discharge, m/s
Excess rainfall, cm mThe volume of runoff is equal to the area under the unit hydrograph:
Also,
Converting to km:
Rounding off to the nearest integer, the area is km.
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