thumb|Washington Navy Yard med Anacostia rundt 1960. Anacostia er en elv i USA, som også fører gjennom hovedstaden Washington, D.C. og som munner ut i Potomac River.
Den er 13,5 km lang og har sitt utspring i Prince George’s County i Maryland. Langs elven ligger Washington Navy Yard og dessuten det tidligere hovedkvarteret til Naval Criminal Investigative Service.
Navnevarianter Opp gjennom historien har navnet vært variert på flere måter: Annacostin RiverKenny, Hamill. The Placenames of Maryland, Their Origin and Meaning. Baltimore: Museum and Library of Maryland History, Maryland Historical Society, 1984. The origin and meaning of the various words and phrases used in Maryland to name the State's most representative villages, towns, cities, mountains, and watercourses. Copious footnotes and an extensive bibliography. Superior treatment of Indian-derived placenames. p28 Annacostone RiverBryan, Wilhelmus Bogart. A History of the National Capital from Its Foundation through the Period of the Adoption of the Organic Act. Macmillan Co., 1914. I/53/1663 Annakostia RiverDermott/City of Washington map/1797 East BranchCram, George F. Map of Washington. Chicago: Phillips and Hunt, 1891. Page 183 in People's Atlas. Size 9x11.5. Prominent downtown buildings named in separate key. Compiled as part of a railway system atlas. 1891 Eastern BranchU.S. Geological Survey. Geographic Names Phase I data compilation (1976-1981). 31-Dec-1981. Primarily from U.S. Geological Survey 1:24,000-scale topographic maps (or 1:25K, Puerto Rico 1:20K) and from U.S. Board on Geographic Names files. In some instances, from 1:62,500 scale or 1:250,000 scale maps Eastern Branch of the PotomacJ T Dubois map/1892
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Kategori:Elver i Maryland Kategori:Washington D.C.