Converging Flow Model Applied to Urban Catchment

by Franklin W. Ellis, Hydro.; CH2M HILL, Reston, Va.,
George M. Hornberger, (A.M.ASCE), Chmn.; Dept. of Environmental Sci., Univ. of Virginia, Charlottesville, Va.,
Fred V. Ramsey, Water Resources Engr.; Environmental Sci. and Engrg., Gainesville, Fla.,

Serial Information: Journal of the Hydraulics Division, 1980, Vol. 106, Issue 9, Pg. 1457-1470

Document Type: Journal Paper


A converging kinematic wave overland flow model was applied to an urban catchment, Rock Creek Watershed in Maryland. The 2-parameter model was easily calibrated and gave reasonable predictions for hydrograph shape as well as peak flow. Two methods for estimating abstractions from gross precipitation were applied. The first was a generalization of a standard infiltration equation and the second used a linear regression between direct runoff and gross precipitation. The fairly accurate results suggest that the converging flow model is ideal for a variety of uses in urban hydrology.

Subject Headings: Urban areas | Catchments | Hydrologic models | Model accuracy | Kinematic waves | Precipitation | Overland flow | Water flow | Maryland | United States

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