April 23 Daily Question: Rainfall Excess Based on a Hydrograph

NCEES Civil PE Specification V.D.: Runoff analysis


Runoff from a storm is measured over a period of 25 hours using a catchment with an area of 25 acres.  Given the following direct runoff hydrograph and a peak flow rate of 40 cubic feet per second, calculate the rainfall excess that resulted from the storm:


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