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  2. Hydrologic Unit Code
    • According to 2 sources
    HUC is the acronym for Hydrologic Unit Code (HUC). It is a hierarchical land area classification system created by the United States Geological Survey (USGS) that is based on surface hydrologic features in a standard, uniform geographical framework.

    What is a Hydrologic Unit C…

    extension.sdstate.edu
    The Hydrologic Unit Code (HUC) is part of a hierarchical classification system for surface water drainage in the US (Seaber et al. 1987). The numerical code represents a cataloging unit of delineation. Vector format (i.e. polygon) data were compiled from United States Geological Survey (USGS) source - the Watershed Boundary Dataset (WBD).

    USGS Gap Analysis Projec…

    usgs.gov
     
  3. People also ask
    What is a hydrologic unit code (HUC)?
    Hydrologic unit codes (HUC) are developed using a progressive two-digit system where each successively smaller areal unit is identified by adding two digits to the identifying code the smaller unit is nested within. WBD contains eight levels of progressive hydrologic units identified by unique 2- to 16-digit codes.

    Watershed Boundary Dataset | U.S. Geological Survey

    usgs.gov
    What is a hydrologic unit code?
    Each unit is identified by a unique hydrologic unit code (HUC) consisting of two to eight digits based on its classification. The Hydrologic Unit Maps site provides information and data for current and historical hydrologic units, names, and numbers. Sources/Usage: Public Domain. View Media Details Screenshot of Hydrologic Unit Maps tool.

    Hydrologic Unit Maps | U.S. Geological Survey - USGS.gov

    usgs.gov
    What does HUC stand for?
    Seaber, Paul R., F. Paul Kapanos, and George L. Knapp (1987). Hydrologic Unit Maps. United States Geological Survey Water-Supply Paper 2294: i–iii, 1–63. HUC is the acronym for Hydrologic Unit Code. It is a hierarchical land area classification system that is based on surface hydrologic features in a standard, uniform geographical framework.

    What is a Hydrologic Unit Code (HUC)? - SDSU Extension

    extension.sdstate.edu
    What is a hydrologic unit map?
    Screenshot of Hydrologic Unit Maps tool. The U.S. is sub-divided into successively smaller hydrologic units which are classified into four levels: regions, sub-regions, accounting units, and cataloging units. Each unit is identified by a unique hydrologic unit code (HUC) consisting of two to eight digits based on its classification.

    Hydrologic Unit Maps | U.S. Geological Survey - USGS.gov

    usgs.gov
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  4. USGS.gov
    https://www.usgs.gov/tools/hydrologic-unit-maps

    Hydrologic Unit Maps | U.S. Geological Survey - USGS.gov

    See results only from usgs.gov
     
  5. USGS.gov
    https://www.usgs.gov/faqs/how-can-i-find-huc...

    How can I find the HUC (Hydrologic Unit Code) for a stream

  6. USGS.gov
    https://www.usgs.gov/national-hydrography/...

    Watershed Boundary Dataset | U.S. Geological Survey - USGS.gov

  7. USGS.gov
    https://www.usgs.gov/publications/hydrologic-unit-maps

    Hydrologic unit maps | U.S. Geological Survey - USGS.gov

    Tags:
    Hydrologic unit maps
    Hydrological code
  8. usgs.gov
    https://help.waterdata.usgs.gov/codes-and-parameters

    Search criteria and codes - USGS Water Data for the Nation Help

  9. usgs.gov
    https://water.usgs.gov/wsc/map_index.…

    Science in Your Watershed: Locate Your Watershed …

    Locate Your Watershed Mapping Interface for Science in Your Watershed of the U.S. Geological Survey.

    Tags:
    Huc Usgs
    Science in Your Watershed
    Watershed Area
    Locate Your Watershed
  10. usgs.gov
    https://water.usgs.gov/GIS/huc.html

    USGS Water Resources: About USGS Water Resources

  11. usgs.gov
    https://water.usgs.gov/wsc/findwatershed.html

    Science in Your Watershed - Find Watershed Information - USGS

    Tags:
    Hydrologic Unit
    Science in Your Watershed
    8 Digit Watershed Codes
  12. USGS Publications Warehouse
    https://pubs.usgs.gov/wsp/wsp2294

    WSP 2294 - USGS Publications Warehouse

    Tags:
    Hydrologic unit maps
    Hydrologic Unit Code Map
    Usgs Wsp 2221
    WSP 2294
  13. USGS Publications Warehouse
    https://pubs.usgs.gov/publication/70046628

    1:2,000,000-scale Hydrologic Units of the United States

    Tags:
    Hydrologic Units
    John Watermolen
    USGS Unnumbered Series
  14. USGS Publications Warehouse
    https://pubs.usgs.gov/publication/wsp2294

    Hydrologic unit maps - USGS Publications Warehouse

    Tags:
    Hydrologic unit maps
    Hydrography
  15. U.S EPA Web Server
    https://enviroatlas.epa.gov/.../Supplemental/HUC.pdf
    [PDF]

    Hydrologic Unit Codes: HUC 4, HUC 8, and HUC 12 - US EPA

    Tags:
    Hydrologic Units
    Hydrologic unit maps
    Watershed Boundary Dataset
  16. USGS.gov
    https://www.usgs.gov/national-hydrography/access...

    Access National Hydrography Products | U.S. Geological Survey

    Tags:
    Hydrologic Unit
    United States Geological Survey
  17. Wikipedia
    https://en.wikipedia.org/wiki/Hydrologic_unit_system_(United_States)

    Hydrologic unit system (United States) - Wikipedia

    Tags:
    Hydrologic Units
    Hydrological code
  18. USGS WaterWatch
    https://waterwatch.usgs.gov/huc_map_help.html

    Huc Map Viewer Help - USGS

    Tags:
    Hydrologic Units
    Hydrological code
    Huc Usgs
  19. USGS Publications Warehouse
    https://pubs.usgs.gov/gip/hydrologic_units/pdf/hydrologic_units.pdf
    [PDF]

    Hydrologic Units - USGS Publications Warehouse

  20. USGS Publications Warehouse
    https://pubs.usgs.gov/gip/hydrologic_units/index.html

    REPORT TYPE AND NUMBER - USGS Publications Warehouse

    Tags:
    Water Drainage Maps
    Drainage Basin Map
    Hydrologic Units Map
  21. usgs.gov
    https://water.usgs.gov/wsc/a_api/wbd/index_wbd.html

    Science in Your Watershed: Locate Your Stream Site by 12-Digit …

    Tags:
    Huc Usgs
    Science in Your Watershed
    Locate Your Watershed
  22. USGS.gov
    https://www.usgs.gov/data/usgs-gap-analysis...

    USGS Gap Analysis Project Additional Data: Hydrologic Unit …

    Tags:
    Hydrologic Unit
    Gap analysis
  23. Nonindigenous Aquatic Species
    https://nas.er.usgs.gov/hucs.aspx

    Nonindigenous Aquatic Species

    Tags:
    Hydrologic Unit
    Watershed Boundary Dataset
    National Boundary Dataset
  24. SDSU Extension
    https://extension.sdstate.edu/what-hydrologic-unit-code-huc

    What is a Hydrologic Unit Code (HUC)? - SDSU Extension

    Tags:
    Hydrologic Unit
    Hydrological code
    Huc Usgs
    United States Geological Survey
  25. usgs.gov
    https://water.usgs.gov/wsc/watershed_finder.html

    Science in Your Watershed: Locate Your Watershed By HUC

    Tags:
    Huc Usgs
    Science in Your Watershed
    Locate Your Watershed
  26. USGS.gov
    https://www.usgs.gov/national-hydrography/national...

    National Hydrography Dataset | U.S. Geological Survey - USGS.gov

    Tags:
    National Hydrography Viewer
    National Hydrography Dataset
    Usgs Nhd Dataset
  27. usgs.gov
    https://waterdata.usgs.gov/nwis/current/?type=...

    USGS Current Conditions for the Nation -- Water Quality

    Tags:
    National
    Map