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Line 1: [[Image:Apalachicola watershed.png|thumb|350px|right|Map of the ACF River Basin watershed showing the [[Apalachicola River]] and its two main tributaries, the [[Chattahoochee River]] and [[Flint River (Georgia)|Flint River]].]] [[Image:HUC031300.jpg|thumb|300px|right|Map of HUC031300 - Apalachicola sub-region and basin in the [[South Atlantic-Gulf Water Resource Region]], showing the 14 sub-basins in the basin.]] The '''ACF River Basin''' is the [[drainage basin]], or watershed, of the '''A''' [[Apalachicola River]], '''C''' [[Chattahoochee River]], and '''F''' [[Flint River (Georgia)|Flint River]], in the [[Southeastern United States]]. This area is alternatively known as simply the '''Apalachicola Basin''' and is listed by the [[United States Geological Survey]] as basin [[hydrologic unit|HUC]] 031300, as well as sub-region HUC 0313. It is located in the [[South Atlantic-Gulf Water Resource Region]], which is listed as HUC 03. The basin is further sub-divided into 14 sub-basins. ==Geography== The ACF River Basin begins in northern [[Georgia (U.S. state)|Georgia]] and flows into the [[Gulf of Mexico]] at [[Apalachicola Bay]], near [[Apalachicola, Florida]]. It drains an area of more than 19,300 square miles (50,000 km²).<ref name=ea>{{cite journal | first = Brian D. | last = Richter | author2 = Mathews, Ruth Harrison, David L. and Wigington, Robert |date=February 2003 | title = Ecologically Sustainable Water Management: Managing River Flows For Ecological Integrity | journal = Ecological Applications | volume = 13 | issue = 1 | pages = 206–224 | url = http://www.nature.org/summit/files/eswm.pdf | accessdate = 2007-02-14 | doi = 10.1890/1051-0761(2003)013[0206:ESWMMR]2.0.CO;2|format=PDF |archiveurl = https://web.archive.org/web/20061214110920/http://www.nature.org/summit/files/eswm.pdf <!-- Bot retrieved archive --> |archivedate = 2006-12-14| year = 2003 }}</ref> ==Listing of Water Resource Sub-Basins== Line 65: ===Conservation=== Other ecological conservation and economic concerns include protecting harvests of [[oyster]]s in Apalachicola Bay, which require a large enough flow of fresh water to prevent excessive [[saltwater intrusion]] from the Gulf.<ref>{{cite journal | first = DH | last = Wilber |date=August 1992 | title = Association Between Freshwater Inflows and Oyster Productivity in Apalachicola Bay, Florida | journal = [[Estuarine, Coastal and Shelf Science]] | volume =35 | issue = 2 | pages = 179–190 | doi = 10.1016/S0272-7714(05)80112-X| bibcode = 1992ECSS...35..179W }}</ref> Numerous endangered and imperiled species occur in the basin, including many endemic mussels <ref>http://www.fws.gov/southeast/news/2007/images/7MusselsFactSheet.pdf</ref> | |||