The National Hydrography Dataset Plus

Please note: The NHDPlus High Resolution is being released for download in Beta version (NHDPlus HR Beta) by Subregion (HU4) as it is built. Please see the NHDPlus High Resolution (NHDPlus HR) page for more information about this building process, to find out the current availability by Hydrologic Region, and to learn about participating in reviews of the Beta version data.

The NHDPlus HR data includes both vector and raster components for each geographic area mapped. NHDPlus HR Beta vector data is available in file geodatabase (GDB) format, zipped (.zip) to reduce the file size. NHDPlus HR raster data files are available for download as zipped (.7z) files