May 10, 2021 · Each unit is identified by a unique hydrologic unit code (HUC) consisting of two to eight digits based on its classification. This site provides information and data for current and historical hydrologic units, names, and numbers.

Each drainage has a unique Hydrologic Unit Code (HUC). The most current national HU dataset is the Watershed Boundary Dataset (WBD). HUCs from other sources might be out of date or differ from the WBD standards.

The Watershed Boundary Dataset (WBD) is the official set of seamless hydrologic basins in the United States. It is a companion dataset to the National Hydrology Dataset (NHD). WBD is produced and updated by the US Geological Survey (USGS).

Hydrologic units (HUs) represent the area of the landscape that drains to a portion of the stream network. More specifically, a hydrologic unit defines the areal extent of surface water drainage to an outlet point on a dendritic stream network or to multiple outlet points where the …

It is a companion dataset to the National Hydrography Dataset (NHD) and a component of the NHDPlus High Resolution (NHDPlus HR). Explore the feature classes, attribute tables and domains contained within the Watershed Boundary Dataset.

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: How's My Waterway? v1.0. Map a watershed. USGS Water Resources Division - Hydrologic Unit maps and spatial data.

Feb 16, 2019 · Watershed boundaries define the aerial extent of surface water drainage to a point. The intent of defining hydrologic units (HU) for the Watershed Boundary Dataset is to establish a base-line drainage boundary framework, accounting for all land and surface areas.

Jun 30, 2016 · Derived from 1:250,000-scale USGS HUC 8 boundaries, this dataset includes a suite of soil metric for use in landscape ecology studies.

Mar 7, 2019 · This resource contains a shapefile of HUC-8 (eight digit Hydrologic Unit Codes) for the Continental United States (CONUS). The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution.

Hydrologic Units at 8-digit, 10-digit, and 12-digit levels for the U.S. states bordering the Gulf of Mexico, along with 1:250000 scale basins and 1:1000000 scale subbasins for the Mexican states bordering the Gulf of Mexico are mapped.