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Title:Applications of GIS databases and water quality modeling for agricultural nonpoint source pollution control
Author(s):Lee, Ming T.; White, David C.
Contributor(s):University of Illinois at Urbana-Champaign; Illinois State Water Survey
Subject(s):Water resource development
Water resource development--Illinois
Geographic information systems
Water quality modeling
Pollution control
Geographic Coverage:Illinois (state)
Abstract:Physical and economic effects of nonpoint source pollution were analyzed by using the Geographic Information System (GIS) and an Agricultural Nonpoint Source Pollution (AGNPS) water quality model. The Highland Silver Lake watershed, a 50-square-mile drainage basin, was used as the test site. The GIS database consists of map layers of soil type, land use, farm boundaries, best management practices (BMPs), stream, scanned aerial photography, and digital elevation models DEMs). Water quality modeling was conducted before and after BMP implementation Soil erosion rate and sediment transport were used as an example of a pollution source and its transport. The pollution potential rating for each cell (10 acres) was assessed by considering both soil erosion rate and sediment delivery ratios to the receiving waters. Then a combination of economic costs and pollution potential were rated based on the model user's own criteria. The method established could be used as a tool for incorporating the on-site water quality sources, their off-site transport capacities, economic costs, and the model user's criteria. The potential of GIs technology for nonpoint source pollution management are discussed. Additional research is also suggested.
Issue Date:1992
Publisher:University of Illinois at Urbana-Champaign. Water Resources Center
Genre:Report (Grant or Annual)
Sponsor:U.S. Department of the Interior
U.S. Geological Survey
Rights Information:Copyright 1992 held by Ming T. Lee, David C. White
Date Available in IDEALS:2016-04-04

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