A unit hydrograph is a hydrograph of runoff produced by a rainstorm of a specified duration called ____________________?
Correct answer: D. Unit duration
- A. Base flow
- B. Peak runoff
- C. Storm runoff
- D. Unit duration
Explanation
A unit hydrograph represents direct runoff from one unit of effective rainfall occurring over a catchment for a specified duration, called the unit duration. Peak runoff and base flow are components or features of a hydrograph, not the specified duration.
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