Agricultural Engineering > GATE 2026 > Rational Method
A 0.80 km2 agricultural watershed has a slope of 0.30% and the maximum length of travel of water is 1 km. The 10-year maximum depth of rainfall is tabulated below:
Duration (minutes): 5, 10, 20, 30, 40, 60
Maximum depth of rainfall (mm): 16, 24, 39, 50, 60, 65
Half of the watershed has row crops (runoff coefficient = 0.40), whilst the other half of the watershed has pasture (runoff coefficient = 0.35). The peak flow rate for the watershed (in m3.s−1) for the 10-year return period is ________. (Rounded off to two decimal places)
Duration (minutes): 5, 10, 20, 30, 40, 60
Maximum depth of rainfall (mm): 16, 24, 39, 50, 60, 65
Half of the watershed has row crops (runoff coefficient = 0.40), whilst the other half of the watershed has pasture (runoff coefficient = 0.35). The peak flow rate for the watershed (in m3.s−1) for the 10-year return period is ________. (Rounded off to two decimal places)
Correct : 0.72
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