Nonpoint Source Pollution Model for Agricultural and Rural Watersheds

by Deva K. Borah, Rutgers Univ, New Brunswick, United States,
M. Saleem Ashraf, Rutgers Univ, New Brunswick, United States,

Document Type: Proceeding Paper

Part of: Engineering Hydrology


A dynamic hydrologic and nonpoint source pollution simulation model for agricultural and rural watersheds; capable of simulating rainfall-runoff, soil erosion, sediment transport, mixing of rainwater with soils containing agricultural chemicals (nutrients and pesticides), and transport of these chemicals with runoff and sediment; is described. The model, called RUNOFF3, was applied to a small agricultural watershed in Georgia, where rainfall-runoff, sediment discharge and water quality data were collected under natural rainfall events. Simulated results of time varying runoff, sediment discharge, and concentrations and mass transport rates of ammonium and atrazine were compared with respective observed data. Sensitivities of two model parameters were studied.

Subject Headings: Agricultural wastes | Watersheds | Soil pollution | Sediment transport | Runoff | Water quality | Water pollution | Georgia | United States

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