The Hawaii water resource region is one of 21 major geographic areas, or regions, in 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. These geographic areas contain either the drainage area of a major river, or the combined drainage areas of a series of rivers.
The Hawaii region, which is listed with a 2-digit hydrologic unit code (HUC) of 20, has an approximate size of , and consists of 9 subregions, which are listed with the 4-digit HUCs 2001 through 2009.
This region includes the drainage within the state of Hawaii. Includes all of Hawaii.
List of water resource subregions Subregion HUC Subregion Name Subregion Description Subregion Location Subregion Size Subregion Map 2001 Hawaii subregion The drainage on the island of Hawaii; and associated waters. Hawaii 2002 Maui subregion The drainage on the island of Maui; and associated waters. Hawaii 2003 Kahoolawe subregion The drainage on the island of Kahoolawe; and associated waters. Hawaii 2004 Lanai subregion The drainage on the island of Lanai; and associated waters. Hawaii 2005 Molokai subregion The drainage on the island of Molokai; and associated waters. Hawaii 2006 Oahu subregion The drainage on the island of Oahu; and associated waters. Hawaii 2007 Kauai subregion The drainage on the island of Kauai; and associated waters. Hawaii 2008 Niihau subregion The drainage on the islands of Niihau and Kaula; and associated waters. Hawaii 2009 Northwestern Hawaiian Islands subregion The drainage on Kure, Laysan, Lisianski, Necker, and Nihoa Islands; Gardner Pinnacles; Maro, and Pearl and Hermes Reefs; French Frigate Shoals; and other islets, reefs, and associated waters northwest of Niipau Island. Hawaii Less than
See also List of rivers in the United States Water resource region
References