the runoff from a 1.2 acre parking lot is directed to a small flood control basi

Question

the runoff from a 1.2 acre parking lot is directed to a small flood control basin with a storage capacity of ~120.000 gallons. The basin has an average surface are of 1,300 sq-ft and a depth of 12 feet. The depersion storage (puddles)for the parking lot is estimated to be 0.18 inches; this is the rainfall that will not enter the basin from the parking lot. The remaining precipitaion is channeled and piped to the basin. If the final depth of water in the basin is 5.2 feet, estimate the depth of rainfall in inches that occurred during the rain event (assume that the basin was dry before the storm event). Remmber, the depth of rainfall would fall on the parking lot and directly into basin

Explanation / Answer

Parking Lot :   1.2 acre = 52272ft

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