This nationwide dynamic service displays the NHD High Resolution at scales from 1:288K and below. This service is also available as a WMTS. It draws more quickly and is more reliable than the dynamic layers, but is updated less frequently and does not provide access to attributes nor the ability to change the style in other applications. It is useful for adding hydrography over other map layers down to 1:9,000 scale. This nationwide cached overlay uses a variety of hydrography layers and depicts them in standard USGS Topographic Map symbology. Which service should I use? Hydrography - Cached (Tiled) (USGSHydroCached) Hydrography web-based map services are available from The National Map Service Endpoints page as cached and dynamic services.ĭown to 9K (Level 17 in Google map tiles) The National Map Download viewer provides an online map viewing tool for downloading the NHDPlus High Resolution (NHDPlus HR), NHD, and WBD.Īccessing Datasets via Web-based Map Services The Watershed Boundary Dataset (WBD) is available in shapefile and file geodatabase formatsĭownload the WBD by 2-digit Hydrologic Unit (HU2) - dataset generated only when edits are performedĭownload the WBD by the Entire Nation - monthlyĭownload Option 2: The National Map Download Viewer Also, an extract containing only streamgages and dams is available.ĭownload the NHD by 4-digit Hydrologic Unit (HU4) - monthly updatesĭownload the NHD by 8-digit Hydrologic Unit (HU8) - monthly updatesĭownload the NHD by State - bimonthly updatesĭownload the NHD by the Entire Nation - monthly updates All NHD downloads contain a copy of the corresponding WBD dataset that is current only to the date the NHD dataset was created. The National Hydrography Dataset is available in shapefile and file geodatabase formats. Updates to select areas in CONUS will begin in 2022 and initial production will continue in Alaska.ĭownload the NHDPlus HR by 4-digit Hydrologic Unit (HU4) for CONUS or by 8-digit Hydrologic Unit (HU8) for Alaska The first version of the NHDPlus HR is currently available for CONUS, Hawaii, and U.S. NHDPlus HR raster data files are available for download as zipped (.7z) files. All NHDPlus HR GDB downloads contain a copy of the NHD and WBD datasets used to produce it, plus additional data specific to the NHDPlus HR dataset.
NHDPlus HR vector data is available in file geodatabase (GDB) format, zipped (.zip) to reduce the file size. The NHDPlus HR data includes a vector and raster component for each geographic area produced. It is recommended that you use Windows Extract or another other software of your choosing to unzip this product.ĭownload Option 1: Downloadable Product Directories NHDPlus High Resolution (NHDPlus HR)
Please note - An error occurs to header files of the datasets below during decompression with 7zip.
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