Runoff from Impervious Surfaces.

Abstract : Numerical procedures form a basis for predicting the runoff from impervious surfaces which accords satisfactorily with the results of extensive field studies undertaken by the Corps of Engineers around 1950. The equations of continuity and of steady, uniform flow are sufficient if information is also available as to the surface resistance. The proposed equations are simpler than originally expected because a number of otherwise complicating terms are negligible for flow in thin sheets. A program is available in order to make computations on an IBM 1620 computor.