Modeling Off-Site Impacts

by A. D. Nicks, USDA, Agricultural Research Service, Durant, OK, USA,
J. R. Williams, USDA, Agricultural Research Service, Durant, OK, USA,
R. R. Schoof, USDA, Agricultural Research Service, Durant, OK, USA,

Document Type: Proceeding Paper

Part of: Watershed Management in the Eighties

Abstract: The off-site impacts of a flood water control program were evaluated by applying the SWRRB (Simulation of Water Resources on Rural Basins) model to a treated basin, primarily agricultural, in central Oklahoma. Flood-water retarding structures were installed on the 538 km**2 basin, of the Little Washita River during the 1970's. The impacts of this structural management program on the stream flow and sediment transport from the basin were evaluated by simulating the daily runoff and erosion from historical data using the model during periods with and without structures installed. The simulated impacts of the basin management with structures installed are a 29% reduction in sediment transport and a 3% reduction in runoff from the basin.

Subject Headings: Basins | Hydrologic models | Computer models | Sediment transport | Floods | Water resources | Simulation models | Stormwater management | North America | Oklahoma | United States

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