An instantaneous unit hydrograph is assumed to have the duration of rainfall occurrence as:
Show Hint
- 1 hour
- 0.5 hour
- 0.1 hour
- Zero hour
The Correct Option is D
Solution and Explanation
Step 2: Determine the duration of rainfall for an IUH. The term "instantaneously" implies that the rainfall event occurs over an infinitesimally small period. Therefore, the duration of the rainfall occurrence is assumed to be zero. The IUH is a theoretical concept derived by making the duration of the unit hydrograph approach zero.
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