An instantaneous unit hydrograph is a direct run-off hydrograph: – McqOptions

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1.	An instantaneous unit hydrograph is a direct run-off hydrograph:
A.	of 12 cm magnitude due to a rainfall excess of 1-h duration
B.	that occurs instantaneously due to a unit rainfall excess of duration 'D' h
C.	of unit rainfall excess precipitating instantaneously over the catchment
D.	occurring at any instant in a long storm
Answer» D. occurring at any instant in a long storm

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