If the duration of a unit hydrograph approaches zero, the resulting unit hydrograph is called __________________?
Correct answer: C. Instantaneous unit hydrograph
- A. Unit hydrograph
- B. Intensity unit hydrograph
- C. Instantaneous unit hydrograph
- D. Unit hyetgoraph
Explanation
When the duration of the effective rainfall excess approaches zero, the unit hydrograph becomes an instantaneous unit hydrograph. It represents the catchment response to an instantaneous unit pulse of effective rainfall.
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