flows NW to Selawik Lake, 15 mi. SW of Selawik, Kotzebue-Kobul Low.
Name reported in 1886 as Man-go-ak by Lieutenant Stoney (1900, map), U.S. Navy (USN).
Kacrowtuk Lake, Tuklomarak Lake,
Rivers:Fox River, Ikugoak River, Kungsugrug River, Mangoak River, Selawik River,
Streams: