flows SW to South Fork Fortymile River, 50 mi. SW of Eagle, Yukon-Tanana High.
Named by prospectors and reported in 1896 by Spurr (1898, pl. 47), U.S. Geological Survey (USGS). "Napoleon Gulch, named after the Frenchman who located it, is rich in nuggets" (Ogilvie, 1897, p. 8).
Dennison Fork, Mosquito Fork Fortymile River, Myers Fork, North Fork Fortymile River, South Fork Fortymile River,
Streams:Alder Creek, Atwater Creek, Buckskin Creek, Butte Creek, Chicken Creek, Dewey Creek, Eagle Creek, Forest Creek, Franklin Creek, Gimlet Creek, Left Fork Chicken Creek, Liberty Creek, Lost Chicken Creek, Napoleon Creek, Ophelia Creek, Soda Creek, Stonehouse Creek, Switch Creek, Tin Kettle Creek, Tom Paine Creek, Uhler Creek, Voss Creek, Wade Creek, Walker Fork, Wall Street Creek, Wilson Creek,