The triangular-shaped hydrograph given below is representative of a certain 1,190-acre wat...

The triangular-shaped hydrograph given below is representative of a certain 1,190-acre watershed. The hydrograph resulted from a rainfall with an effective duration of 1.0 hour. This is not a unit hydrograph, but it can be used to develop a unit hydro-graph for this watershed for a rainfall duration of 1.0 hour. The watershed is charac­terized by a CN of 80.

Assume that a rainfall with a depth of 3.0 inches and duration of 3.0 hours falls over the watershed (1.0 in./hour for 3 hours). The rainfall distribution is uniform over time as well as spatially. Compute the resulting runoff hydrograph using a computational time interval of 1.0 hour.