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Water Quality Modeling Using a Small Watershed Model (SWAM)

by D. G. DeCoursey, USDA-ARS, United States,
Edward H. Seeley, USDA-ARS, United States,



Document Type: Proceeding Paper

Part of: Soil Properties Evaluation from Centrifugal Models and Field Performance

Abstract:

The Small Watershed Model (SWAM) is a state-of-the-art model that simulates the movement of water, sediment, and chemicals through a small, mixed-land-use watershed. It was developed to aid planners and others in assessing nonpoint sources of pollution. To the maximum extent practical, the physical processes are simulated using causal rather than black-box approaches. The watershed is divided into source area, channel, reservoir, and ground water segments within which water, sediment and chemicals move, interacting with each other and with the agricultural environment. Agricultural land use and management practices as well as daily changes in vegetative cover and infiltration rates are simulated.

Subject Headings: Water quality | Watersheds | Simulation models | Soil pollution | Water pollution | Mathematical models | Land use

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