39°3′53.39″N 77°22′14.95″W / 39.0648306°N 77.3708194°W
Sharpshin Island is an island on the Potomac River in Montgomery County, Maryland, near Algonkian Regional Park.[1] It is 5.3 acres (2.1 ha) in area, but is very narrow, measuring only 50 ft (15 m) across at its broadest point.[2] Because of its plentiful shoreline, it provides habitat for waterfowl, molluscs, crustaceans, amphibians, and reptiles.[2] A land patent for the island for "Harry D. Johnson et. al" in 1903.[3]