As of July 1, 2021 the Alaska Hydrography Database is no longer supported at the University of Alaska.
For more information about hydrography (NHD, WBD, NHDPlus HR) updates in Alaska, please contact the Alaska Hydrography Technical Working Group, or refer to the following links:
U.S. Geological Survey
National Hydrography Dataset (NHD)
Alaska Science Center Water Research
NOAA
Continually Updated Shoreline Product
Alaska-Pacific River Forecast Center
U.S. Forest Service
Hydrography Data Access
To access the National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD), visit: https://apps.nationalmap.gov/downloader/#/
To access hydrography related WMS/WMTS, visit: https://apps.nationalmap.gov/services/
To download the NHDPlus HR by 4-digit Hydrologic Unit (HU4) or by 8-digit Hydrologic Unit (HU8) for Alaska: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Hydrography/NHDPlusHR/Beta/GDB/