A 3 – hour storm over a watershed had an average depth of 27 mm. The resulting flood hydrograph was found to have a peak flow of 200 m3/s and a base flow of 20 m3/s. If the loss rate could be estimated as 0.3 cm/h, a 3 – hour unit hydrograph for this watershed will have a peak of
1
66.7 m3/s
2
100 m3/s
3
111.1 m3/s
4
33.3 m3/s