Question

The ordinates of a 1-hour unit hydrograph (UH) are given below.

Time (hours)	0	1	2	3	4	5	6	7	8	9	10	11
Ordinates of 1-hour UH (m3/s)	0	13	50	80	95	85	55	35	15	10	3	0

These ordinates are used to derive a 3-hour UH. The peak discharge (in m3/s) for the derived 3-hour UH is _____ (rounded off to the nearest integer).

Answer 1

Correct Answer: 86

The answer is: 86 or 88 (approx.)