anabranch of Yukon River, flows NW around Serpentine I., 35 mi. NE of NULATO, Koyukuk Low.
Local name reported in 1954 by U.S. Geological Survey (USGS).
Cat Island, Cook Island, Hen Island, Jimmy Island, Lark Island, Serpentine Islands,
Rivers:Jimmy Slough, Kala Slough, Nikolai Slough,
Streams:Streams:Bear Creek, Cub Bear Creek, Galena Creek, Kinkaid Creek, Whakatna Creek,