USGS Hydrologic Unit Map Publications

These icons indicate the available components of each publication:

  • Report = Report
  • Disk = CD/DVD
  • Map = Maps
  • Geospatial Data = Geospatial data
  • Outside Link = Outside Link
  • Interactive Map = Interactive Map

Maps that delineate units which are basically hydrographic in nature and which are used by the U.S.G.S. in cataloging water data.

HU 1974 Map
U.S. Geological Survey, 1974, Hydrologic unit map- 1974 state of Alaska, 1 sheet.
HU 1987 Map
U.S. Geological Survey, 1987, Hydrologic unit map- 1987 state of Alaska, 1 sheet, scale 1:2,500,000.