Abstract
 Geospatial Analysis Approaches for Drinking Water Source Protection Areas Track: Water Resources Author(s): Jamie Cajka, Roger Anzzolin, Bill Cooter, James Rineer, James Sinnott A variety of drinking water source area GIS layers are now available to assist in identifying potential contaminant risks for the surface and ground water sources used by public drinking water systems. Since these areas are typically defined for specific intakes or wellheads for each system, the complete set of source area polygons for entire states, or the entire country, will involve complex patterns, with polygons overlapping or being embedded within other polygons. Examples are presented on approaches for using these polygons to process information using other GIS data layers or raster-based information such as the NLCD. Esri tools such as Spatial Analyst, Model Builder, and Zonal Statistics commands were applied using special Python-based ArcGIS scripts. The outputs from these geospatial analyses can then be incorporated into ArcIMS-based tools such as the Office of Ground Water and Drinking Water's Drinking Water Mapping Application. Jamie Cajka Research Triangle Institute (RTI) 3040 Cornwallis Road Research Triangle Park , NC 27709 US Phone: 919-541-6470 E-mail: jcajka@rti.org Roger Anzzolin U. S. Environmental Protection Agency 1200 Pennsylvania Ave. NW Washington , DC 20460-001 US Phone: 202-564-4093 E-mail: anzzolin.roger@epa.gov Bill Cooter Research Triangle Institute (RTI) 3040 Cornwallis Road Research Triangle Park , NC 27709 US Phone: 919-316-3728 E-mail: sid@rti.org James Rineer Research Triangle Institute (RTI) CG 3040 Corwallis Road Research Triangle Park , NC 27709 US Phone: 919-990-8435 E-mail: jrin@rti.org James Sinnott Research Triangle Institute (RTI) 3040 Cornwallis Road Research Triangle Park , NC 27709 US Phone: 919-316-3723 E-mail: jsinnott@rti.org |
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