Abstract
Putting NHDPlus to Work Track: Water Resources Author(s): Thomas Dewald The National Hydrograpy Dataset (NHD) analyses performed to date have been predominantly based on spatial coincidence--identifying whether certain features exist or don't exist at the same location on the drainage network. With the 2006 completion of NHDPlus, up/downstream analysis, dilution modeling and landscape analysis are now possible. NHDPlus is a suite of geospatial products that build on and extend the capabilities of the NHD by integrating it with the National Elevation Dataset and the Watershed Boundary Dataset. NHDPlus includes improved NHD names and networking, value-added attributes (including stream order), catchments, catchment attributes (including land cover), stream flow volume and velocity estimates as well as associated flow direction and accumulation grids. This presentation will provide an overview of the inherent functionality provided by NHDPlus and a selection of applications that utilize it. Thomas Dewald EPA Office of Water 1200 Pennsylvania Ave (4503T) Washington , DC 20460 US Phone: 202-566-1178 E-mail: dewald.tommy@epa.gov |
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