There are multiple ways to access hydrography data supported by AK HYDRO. The buttons below and the linked text in this paragraph will filter the data table below to display subsets of the available data based on source category. To access the most recent edited data, including features that may not have been integrated into the most recent version of the National Hydrography Dataset (NHD), filter the table to AK HYDRO. To access the most recent version of the NHD for all of Alaska or by subregion, filter the table to NHD Standard. Or click here to reset the table to show all data. The table below can also be filtered by data type or region using the filter option above the table to help users find available data. To contribute data to AK HYDRO, please coordinate by email with Kacy Krieger.
In some targeted areas High-Resolution NHDPlus (NHDPlus HR) has been created and is available through the USGS. NHDPlus HR is an integrated suite of application-ready geospatial data products, incorporating many of the best features of the NHD and the 3D Elevation Program (3DEP). NHD Plus, based on the high resolution NHD (1:24,000-scale or better), includes the stream network, feature names, “value added attributes” (VAA), and elevation-derived catchment rasters and other raster layers.