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- HUC stands for Hydrologic Unit Code. The 12-digit HUCs divide watersheds into sub-watersheds12. The USGS divides the country into 22 regions (2-digit), 245 subregions (4-digit), 405 basins (6-digit), ~2,400 subbasins (8-digit), ~19,000 watersheds (10-digit), and ~105,000 subwatersheds (12-digit)3. WBDs are represented as polygons that define the boundary of the HUs. The HUs are given a Hydrologic Unit Code (HUC) that ranges from 2 digits to 12 digits. These codes describe where the unit is in the country and the level of the unit4.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.The 10-digit HUCs divide the larger sub-region into watersheds, and the 12-digit HUCs divide the watersheds into sub-watersheds.www.in.gov/idem/nps/what-is-a-watershed/hydrolo…HUC 8 maps the subbasin level, analogous to medium-sized river basins (about 2200 nationwide, pictured in red in the image); and HUC 12 is a more local sub-watershed level that captures tributary systems (about 90,000 nationwide used by EnviroAtlas to display national metrics for the conterminous U.S.).enviroatlas.epa.gov/enviroatlas/datafactsheets/pdf/…Watersheds are delineated by USGS using a nationwide system based on surface hydrologic features. This system divides the country into 22 regions (2-digit), 245 subregions (4-digit), 405 basins (6-digit), ~2,400 subbasins (8-digit), ~19,000 watersheds (10-digit), and ~105,000 subwatersheds (12-digit).nas.er.usgs.gov/hucs.aspxWBDs are represented as polygons that define the boundary of the HUs. The HUs are given a Hydrologic Unit Code (HUC) that ranges from 2 digits to 12 digits. These codes describe where the unit is in the country and the level of the unit.developers.google.com/earth-engine/datasets/catal…
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How can I find the HUC (Hydrologic Unit Code) for a stream?
See results only from usgs.govHydrologic Unit Maps
Learn about the hydrologic unit codes (HUC) that identify the U.S. sub …
Locate Your Watershed
Find your watershed by using the 8-digit Hydrologic Unit Code (HUC) on a map …
Watershed Boundary Dat…
The Watershed Boundary Dataset (WBD) is a seamless, national hydrologic unit …
HUCs
Each hydrologic unit is assigned a 2-digit to 12-digit number that uniquely identifies …
About USGS Water Reso…
The downloadable Watershed Boundary Dataset (WBD) - is a nationally …
Find Watershed Information
Enter the 8-digit Hydrologic Unit Code (HUC) for your watershed to access …
Hydrologic Unit Maps | U.S. Geological Survey - USGS.gov
Science in Your Watershed: Locate Your Watershed …
Find your watershed by using the 8-digit Hydrologic Unit Code (HUC) on a map of the United States. Learn more about the USGS Water Science in Your Watershed program and the new Watershed Finder Menu Interface.
Hydrologic Unit Codes: What Are They? - ArcGIS …
Learn how hydrologic unit codes (HUCs) identify drainage basins in the United States in a nested arrangement of six levels. Explore the map and the interactive features to see the HUCs for each region, subregion, basin, subbasin, …
Watershed Boundary Dataset | U.S. Geological …
The Watershed Boundary Dataset (WBD) is a seamless, national hydrologic unit dataset that defines the drainage area of surface water to an outlet point. The WBD contains eight levels of progressive hydrologic units identified by unique …
Hydrologic unit system (United States) - Wikipedia
Nonindigenous Aquatic Species
Each hydrologic unit is assigned a 2-digit to 12-digit number that uniquely identifies each of the six levels of classification within six two-digit fields. An example is shown below using hydrologic unit code 180902030303:
USGS Water Resources: About USGS Water Resources
What is a Hydrologic Unit Code (HUC)? - SDSU …
Mar 22, 2022 · HUC is a system of land area classification based on surface hydrologic features. Learn about the levels, digits, and names of HUC, and how they differ from 8-digit to 12-digit units.
EnviroAtlas Interactive Map | US EPA
Sep 3, 2024 · HUC Navigation | Identify upstream or downstream 12-digit HUCs within the stream network from any given point in the conterminous US. Elevation Profile | View the elevation profile of a selected line segment.
Science in Your Watershed: Locate Your Stream Site by 12-Digit …
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