Modeling the Lake Decatur Watershed in Illinois to Evaluate Effects of Best Management Practices on Nitrate Loadingby Deva Borah,
Misganaw Demissie, (M.ASCE),
Document Type: Proceeding Paper
Abstract: The Illinois State Water Survey recently completed a two-year monitoring and modeling study of the Lake Decatur watershed in Illinois to develop land use management alternatives that would eventually bring the city of Decatur, Illinois into compliance with Illinois Environmental Protection Agency drinking water standards. This paper describes the modeling component of the study. Best management practice (BMP) scenarios were evaluated with the Agricultural Nonpoint Source Pollution model, which was calibrated and verified on the Lake Decatur watershed using monitored data. Model results proved useful in evaluating the effects of BMPs on nitrate loading into Lake Decatur.
Subject Headings: Watersheds | Best Management Practice | Lakes | Load factors | Nitrates | Model analysis | Hydrologic models | Agricultural wastes | Nonpoint pollution | Land surveys | North America | Illinois | United States
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