South Atlantic-Gulf Water Resource Region
The South Atlantic-Gulf 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.[1][2]
The South Atlantic-Gulf region, which is listed with a 2-digit HUC code of 03, has an approximate size of 279,664 square miles, and consists of 18 sub-regions, which are listed with the 4-digit HUC codes of 0301 through 0318.
This region includes the drainage that ultimately discharges into: (a) the Atlantic Ocean within and between the states of Virginia and Florida; (b) the Gulf of Mexico within and between the states of Florida and Louisiana; and (c) the associated waters. The geographic area of the South Atlantic-Gulf region includes all of Florida and South Carolina, and parts of Alabama, Georgia, Louisiana, Mississippi, North Carolina, Tennessee, and Virginia.[3]
Listing of Water Resource Sub-Regions
| Sub-Region HUC[4] | Sub-Region Name[4] | Sub-Region Description[3] | Sub-Region Location[4] | Sub-Region Size (mi2)[4] | Sub-Region Map |
|---|---|---|---|---|---|
| 0301 | Chowan-Roanoke | The coastal drainage and associated waters from and including the Back Bay drainage to Oregon Inlet. | Located in Virginia and North Carolina. | 19,063 |  |
| 0302 | Neuse-Pamlico | The coastal drainage and associated waters from Oregon Inlet to Browns Inlet. | Located in North Carolina. | 14,305 |  |
| 0303 | Cape Fear | The coastal drainage and associated waters from Browns Inlet to and including the Cape Fear River Basin. | Located in North Carolina. | 9,224 |  |
| 0304 | Pee Dee | The coastal drainage and associated waters from the Cape Fear River Basin boundary to the Santee River Basin boundary. | Located in North Carolina, South Carolina, and Virginia. | 18,865 |  |
| 0305 | Edisto-Santee | The coastal drainage and associated waters from and including the Santee River Basin to the Savannah River Basin boundary. | Located in Georgia, North Carolina, and South Carolina. | 23,859 |  |
| 0306 | Ogeechee-Savannah | The coastal drainage and associated waters from and including the Savannah River Basin to the Altamaha River Basin boundary. | Located in Georgia, North Carolina, and South Carolina. | 16,926 |  |
| 0307 | Altamaha-St. Marys | The coastal drainage and associated waters from and including the Altamaha River Basin to the St. Johns River Basin boundary. | Located in Florida and Georgia. | 20,785 |  |
| 0308 | St. Johns | The coastal drainage and associated waters from and including the St. Johns River Basin to St. Lucie Inlet. | Located in Florida. | 11,387 |  |
| 0309 | Southern Florida | The coastal drainage and associated waters from St. Lucie Inlet to and including the Caloosahatchee River Basin, and interior drainage south of the St. Johns and Peace River Basins. | Located in Florida. | 17,803 |  |
| 0310 | Peace-Tampa Bay | The coastal drainage and associated waters from the Caloosahatchee River Basin boundary to and including the Withlacoochee River Basin. | Located in Florida. | 9,751 |  |
| 0311 | Suwannee | The coastal drainage and associated waters from the Withlacoochee River Basin boundary to and including the Aucilla River Basin. | Located in Florida and Georgia. | 13,520 |  |
| 0312 | Ochlockonee | The coastal drainage and associated waters from the Aucilla River Basin boundary to and including the Ochlockonee River Basin. | Located in Florida and Georgia. | 3,665 |  |
| 0313 | Apalachicola | The coastal drainage and associated waters from the Ochlockonee River Basin boundary to and including the Apalachicola River Basin and the drainage into Apalachicola Bay. | Located in Alabama, Florida, and Georgia. | 20,355 |  |
| 0314 | Choctawhatchee-Escambia | The coastal drainage and associated waters from the Apalachicola Bay drainage boundary to the Mobile Bay drainage boundary. | Located in Alabama and Florida. | 14,930 |  |
| 0315 | Alabama | The Alabama River Basin. | Located in Alabama, Georgia, and Tennessee. | 22,739 |  |
| 0316 | Mobile-Tombigbee | The drainage into Mobile Bay excluding the Alabama River Basin. | Located in Alabama and Mississippi. | 21,833 |  |
| 0317 | Pascagoula | The coastal drainage and associated waters in Alabama and Mississippi north and east of the Louisiana-Mississippi state line from the Mobile Bay drainage boundary to the Pearl River Basin boundary. | Located in Alabama and Mississippi. | 11,965 |  |
| 0318 | Pearl | The Pearl River basin. | Located in Louisiana and Mississippi. | 8,689 |  |
See also
References
- ↑ "Science in Your Watershed - Locate Your Watershed". USGS. Retrieved 2015-11-28.
- ↑ "Hydrologic Unit Maps". USGS. Retrieved 2015-11-28.
- 1 2 "Boundary Descriptions and Names of Regions, Subregions, Accounting Units and Cataloging Units". USGS. Retrieved 2015-11-28.
- 1 2 3 4 McManamay RA, Bevelhimer MS, Kao SC, Yaxing W, Martinez-Gonzalez M, Samu N (2013). "National Hydropower Asset Assessment Environmental Attribution". USGS-Oak Ridge National Laboratory. Retrieved 2016-10-12.