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.

This document establishes Federal standards and procedures for creating the WBD as seamless and hierarchical hydrologic unit data, based on topographic and hydrologic features.

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 HUCs from other sources might be out of date or differ from the WBD standards.

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.

This dataset represents the hydrologic unit boundaries to the 12-digit (6th level) for the entire United States. Some areas may also include additional subdivisions representing the 14- and 16-digit hydrologic unit (HU).

Apr 22, 2017 · The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit (HU) data consistent with the national criteria for delineation and resolution. It defines the...

Watersheds 10-Digit HUC (USGS 2022) - 10-digit HU (Watershed) Topographic . Trust Center . Legal . Contact Esri . Report Abuse . Contact Us. Zoom to + Transparency + Set Visibility Range + Rename + Move up + Move down + Copy + Show in Legend + Hide in Legend + Remove + Filter Edits + Show All Edits ...

A hierarchical hydrologic unit code (HUC) consisting of 2 additional digits for each level in the hydrologic unit system is used to identify any hydrologic area (see Federal Standards and Procedures for the National Watershed Boundary Dataset).

10-digit watersheds from the USGS Watershed Boundary Dataset (WBD) bounded by the SPC Region.

Sep 5, 2023 · 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) and …