8 digit hydrologic unit codes - Search
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  2. The hydrologic unit code is an eight-digit number that identifies each hydrologic unit. The code uniquely identifies each of the four levels-regional, subregional, accounting, and cataloging-of hydrologic classification within four two-digit fields.

    REPORT TYPE AND NUMBER - USG…

    pubs.usgs.gov/gip/hydrologic_units/index.html
    The fourth level of classification, the 8-digit cataloguing unit, was originally the smallest element in the system and further divided the subregions and accounting units into smaller areas. For example, the Lower James unit within the James River subregion is identified with a HUC code of 10160011 (Figure 2).

    What is a Hydrologic Unit Code (HUC)? …

    extension.sdstate.edu/what-hydrologic-unit-code-huc
    WBD contains eight levels of progressive hydrologic units identified by unique 2- to 16-digit codes. The dataset is complete for the United States to the 12-digit hydrologic unit. The 8-digit level unit is often referred to as HUC8 and is a commonly used reference framework for planning and environmental assessment.

    HUC8 CA Simplified - የመረጃ ስብስብ - Ca…

    data.ca.gov/am/dataset/huc8-ca-simplified
     
  3. People also ask
    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
    How many digits are in a hydrologic unit system?
    The hydrologic unit system divides the country into 21 regions (2-digit), 222 subregions (4-digit), 352 accounting units (6-digit), and 2,262 cataloguing units (8-digit). A hydrologic unit code (HUC) consisting of 2 digits for each level in the hydrologic unit system is used to identify any hydrologic area. fields

    Nonindigenous Aquatic Species

    nas.er.usgs.gov
    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
    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

    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://water.usgs.gov/wsc/map_index.…

    Locate Your Watershed (Legacy 8-digit HUC) - USGS

    WEBScience in Your Watershed. Locate Your Watershed (Legacy 8-digit HUC) Click on the Map Above to View a Particular Region • Try the new Watershed Finder Menu Interface. USGS Water.

  6. USGS.gov
    https://www.usgs.gov/faqs/how-can-i-find-huc...

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

  7. usgs.gov
    https://water.usgs.gov/GIS/huc.html

    USGS Water Resources: About USGS Water Resources

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

    Science in Your Watershed - Find Watershed Information - USGS

  9. USGS.gov
    https://www.usgs.gov/national-hydrogr…

    Watershed Boundary Dataset | U.S. Geological …

    WEBWBD contains eight levels of progressive hydrologic units identified by unique 2- to 16-digit codes. The dataset is complete for the United States to the 12-digit hydrologic unit. The 14- and 16-digit hydrologic units …

  10. ArcGIS StoryMaps
    https://storymaps.arcgis.com/stories/b668…

    Hydrologic Unit Codes: What Are They? - ArcGIS …

    WEBEach hydrologic unit is identified by a unique hydrologic unit code (HUC) consisting of two to eight digits based on the four levels of classification in the hydrologic unit system. 01 / 06. HUC-2. Regions. …

  11. Nonindigenous Aquatic Species
    https://nas.er.usgs.gov/about/hucs.aspx

    Hydrologic Unit Codes (HUCs)Explained

    WEBEach hydrologic unit is assigned an 8-digit attribute code that uniquely identifies each of the four levels of classification within four two-digit fields. An example is shown below using hydrologic unit code 04030203:

  12. regulations.gov
    https://downloads.regulations.gov/OSM-2010-0018-10470/content.pdf
    [PDF]

    Hydrologic Unit Maps

  13. SDSU Extension
    https://extension.sdstate.edu/what-hyd…

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

    WEBMar 22, 2022 · 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 …

  14. usgs.gov
    https://help.waterdata.usgs.gov/codes-and-parameters

    Search criteria and codes — USGS Water Data for the Nation …

  15. Wikipedia
    https://en.wikipedia.org/wiki/Hydrologic_unit_system_(United_States)

    Hydrologic unit system (United States) - Wikipedia

  16. ArcGIS Hub
    https://hub.arcgis.com/maps/9ae37d0227de4c49ac...

    National Hydrography Dataset (NHD) - Hydrologic Unit Code …

  17. hydroshare.org
    https://www.hydroshare.org/resource/b832a6c2f...

    HUC8 - CONUS Shapefile | CUAHSI HydroShare

  18. Washington State Geospatial Open Data Portal
    https://geo.wa.gov/maps/waecy::national-watershed...

    National Watershed Boundary Dataset (WBD): Hydrologic Unit …

  19. Washington State Geospatial Open Data Portal
    https://geo.wa.gov/maps/de1373e9f5394e5284660c939c...

    National Watershed Boundary Dataset (WBD): Hydrologic Unit …

  20. Wikipedia
    https://en.wikipedia.org/wiki/Hydrological_code

    Hydrological code - Wikipedia

  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 …

  22. usgs.gov
    https://water.usgs.gov/wsc

    Science in Your Watershed - USGS

  23. ornl.gov
    https://hydrosource.ornl.gov/dataset/us-hydrologic-classification-data

    U.S. Hydrologic Classification Data | Hydrosource

  24. USGS.gov
    https://www.usgs.gov/centers/lower-mississippi...

    Mississippi Hydrologic Unit Code Map | U.S. Geological Survey

  25. U.S. Environmental Protection Agency
    https://www.epa.gov/hydrowq/metadata-hydrologic-unit-boundaries

    Metadata Hydrologic Unit Boundaries | US EPA - U.S.

  26. USGS.gov
    https://www.usgs.gov/national-hydrography/access...

    Access National Hydrography Products | U.S. Geological Survey

  27. USGS.gov
    https://www.usgs.gov/data/lower-androscoggin...

    Lower Androscoggin Watershed Hydrologic Unit 8 Seamless 1-m …