Ad
related to: united states hydrologic unit system parts and functions
Search results
Results From The WOW.Com Content Network
Originally a four-tier system divided into regions, sub-regions, accounting units, and cataloging units, each unit was assigned a unique Hydrologic Unit Code (HUC). As first implemented the system had 21 regions, 221 subregions, 378 accounting units, and 2,264 cataloging units. [1] [2] Over time the system was changed and expanded. [3]
A water resource region is the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units as part of the U.S. hydrologic unit system. This first level of classification divides the United States into 21 major geographic areas, or regions.
Water resource basins of the Southern California coastal subregion (HUC 1807). Southern California Coastal water resource subregion (HUC 1807) is one of 10 hydrologic subregions within the California water resource region and is one of 222 water resource subregions in the United States hydrologic unit system.
Hydrologic unit system (United States) W. Water resource region This page was last edited on 2 April 2024, at 21:46 (UTC). Text is available under the Creative ...
This category is for water resource subregions, second-level units of the United States hydrologic unit system, as defined by the USGS. Although focused in the United States , some subregions include parts of Canada and Mexico .
The Laguna–San Diego Coastal water resource basin is a third-level subdivision of the United States hydrologic unit system. [1] The tiers of the classification system, in order from largest to smallest, are regions, subregions, basins (formerly accounting units), subbasins (formerly cataloging units), watersheds, and subwatersheds. These ...
This category is for top-level hydrologic units, called water resource regions, as defined by the USGS. Although US focused, some regions include parts of Canada and Mexico . The main article for this category is water resource region .
There are two water resource basin subdivisions of the Northern Mojave–Mono Lake subregion (HUC 1809). Northern Mojave–Mono Lake water resource subregion (HUC 1809) is one of 10 water resource subregions within the California water resource region and is one of 222 water resource subregions in the federally organized United States hydrologic unit system.