2004 UC Proceedings Abstract
Integrated Water Quality Management Through GIS Track: Water Resources Author(s): Peter Ilieve, Thomas Dewald, Kenneth Gilland States are required under the Clean Water Act (CWA) to maintain various types of information about the waters under their jurisdiction. Many states have realized that developing a system that links this information through a database with a GIS interface can maximize efficiency and provide a significant tool for protecting their waters. These states are working with the U.S. Environmental Protection Agency (EPA) to develop GIS coverages based on the National Hydrography Dataset (NHD). The NHD is a standard hydrography platform for mapping and other analyses of surface water systems. With technical support from EPA, states are developing systems that combine Water Quality Standards (WQS), assessment waters, and impaired waters data layers using the NHD Reach Indexing Tool (NHD-RIT). NHD-RIT is an ArcView software-based utility that allows the development of special event tables using Esri dynamic segmentation techniques in formats compatible with the EPA's Reach Address Database (RAD) geodatabase. Peter Ilieve RTI International Water Quality Department 3040 Cornwallis Road PO Box 12194 RTP , NC 27709 US Phone: (919) 316-3727 Fax: (919) 541-7155 E-mail: pii@rti.org Thomas Dewald U.S. Environmental Protection Agency Office of Water 401 M Street, SW Washington , DC 20460 US Phone: 202-566-1178 Fax: 202-566-1331 E-mail: dewald.tommy@epa.gov Kenneth Gilland Buck Engineering 8000 Regency Parkway Suite 200 Cary , NC 27511 US Phone: 919 463-5488 E-mail: kgilland@buckengineering.com |
|||||
