File:C&O Canal, Washington, DC. 2007 Along the Potomac River, Chesapeake Bay watershed. USEPA photo by Eric Vance (13765603633).jpg
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C&O_Canal,_Washington,_DC._2007_Along_the_Potomac_River,_Chesapeake_Bay_watershed._USEPA_photo_by_Eric_Vance_(13765603633).jpg (800 × 532 pixels, file size: 226 KB, MIME type: image/jpeg)