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<span style='font-family: "Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size: 17px;'>1:100,000 NHDPlusV2.1 Catchments within Chesapeake Bay Watershed, including all catchments that intersect with the Chesapeake Bay Watershed Boundary. </span><div><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif' size='4'>NHDPlus is an integrated suite of application-ready geospatial data products, incorporating many of the best features of the National Hydrography Dataset (NHD), the National Elevation Dataset (NED), and the National Watershed Boundary Dataset (WBD). NHDPlus, based on the medium resolution NHD (1:100,000-scale), includes the stream network and improved linear networking, feature naming, and “value added attributes” (VAA). NHDPlus also includes elevation-derived catchments. </font></div><div><span style='color: rgb(33, 33, 33); font-family: "Source Sans Pro", "Helvetica Neue", Helvetica, Roboto, Arial, sans-serif; font-size: 17px;'>Since the significantly improved NHDPlusV2 is intended to supercede NHDPlusV1, new and existing NHDPlus users are strongly encouraged to use NHDPlusV2. While the NHDPlusV1 data, metadata and documentation remains available from this site, user support for the NHDPlusV1 will be increasingly limited.</span><br /></div><div><span style='font-family: "Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size: 17px;'>The details of </span><font face='Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif'><span style='font-size: 17px;'>National Hydrography Dataset Plus (NHDPlus) is at</span><font size='4'> </font></font><font size='4'><a href='https://www.epa.gov/waterdata/nhdplus-national-hydrography-dataset-plus'>https://www.epa.gov/waterdata/nhdplus-national-hydrography-dataset-plus</a> .</font></div> |