9.11 Measured total hourly discharge rates (in cfs) from a 2.48-mi^(2) drainage basin are tabulated below. The hydrograph was produced by a rainstorm having a uniform intensity of 2.60(in)/(hr) starting at 9am and abruptly ending at 11am. The base flow from 8am to 3pm was a constant 100 cfs.
d) Derive a 4-hr unit hydrograph for the basin.
e) Derive a 1-hr unit hydrograph for the basin.