in the Yukon River, 12 mi. SE of Fort Yukon, Yukon Flats.
Local name reported by U.S. Geological Survey (USGS) in 1956; so named because the island is 12 miles upstream from Fort Yukon; the island was shown on Edwards' Track Chart of the Yukon in 1899 as "Seventeenmile Island."
Homebrew Island, Jenny Island, Rodman Island, Toussaint Island, Twelvemile Island,
Lakes:Emile Lake, Hospital Lake, Laura Lake, Ninemile Lake, Otto Lake, Sixmile Lake,
Rivers:Streams:Bear Blanket Slough, Black River Slough, Eightmile Slough, Seventeenmile Slough, Seventeenmile Slough, Squirrel Creek, Yllota Slough,