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Utilization of Geographic Information Systems Technology in the Assessment of Regional Ground-Water Quality

by Douglas Nebert, US Geological Survey, Portland, OR, USA,
Dean Anderson, US Geological Survey, Portland, OR, USA,



Document Type: Proceeding Paper

Part of: Steel Structures

Abstract:

The U. S. Geological Survey (USGS) in cooperation with the U. S. Environmental Protection Agency Office of Pesticide Programs and several State agencies in Oregon has prepared a digital spatial database at 1:500,000 scale to be used as a basis for evaluating the potential for ground-water contamination by pesticides and other agricultural chemicals. Geographic information system (GIS) software was used to assemble, analyze, and manage spatial and tabular environmental data in support of this project. Physical processes were interpreted relative to published spatial data and an integrated database to support the appraisal of regional ground-water contamination was constructed. Ground-water sampling results were reviewed relative to the environmental factors present in several agricultural areas to develop an empirical knowledge base which could be used to assist in the selection of future sampling or study areas.

Subject Headings: Groundwater quality | Groundwater pollution | Information systems | Geographic information systems | Spatial data | Agricultural wastes | Water quality | Oregon | United States

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