flows NE to South Fork Fortymile River, 55 mi. SW of Eagle, Yukon -Tanana High.
Prospectors' name obtained in 1898 by E. C. Barnard, U.S. Geological Survey (USGS). Named for the soda springs at the mouth of the stream.
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, Hilda Creek, Left Fork Chicken Creek, Liberty Creek, Lost Chicken Creek, Napoleon 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,