the rainfall summary for September 1983 (Table 4-1) at Washington, D.C., graph
the hourly hyetograph (in./hr) for the storm of September 30. Determine the
total depth (in.). Also, determine the peak hourly rate (in./hr) and the
maximum 3-hr rate of rainfall for the storm. What volume of rain (in acre-ft)
would fall on a 50-acre watershed for this storm event?