heads at its Middle and North Forks, flows SW 425 mi. to Yukon River, 22 mi. NE of Nulato; Koyukuk Low.
Koyukan Indian name first recorded by Lieutenant L. A. Zagoskin, Imperial Russian Navy (IRN), as "Kuyukak" (and "Yunaka" or "Yunnaka"). Nulato referred to the stream as "Kuiuk" or "Kuyaak." Western Union Telegraph Expedition spelled the name "Coyukuk." Board on Geographic Names (BGN) standardized the present spelling. river was explored by Zagoskin in 1842-44 and in 1885, Lieutenant H. T. Allen, USA, explored almost its entire length.
Bishop Rock, Koyukuk Mountain,
Islands:Bishop Rock Island, Chips Island, Koyukuk Island, Milady Island, Whontleya,
Locales:Mountains:Rivers:Chips Slough, Koyukuk River, Pilot Mountain Slough,
Streams:Hodegaden Creek, Woodyard Creek,
Routes:Over the Hill Portage, Over-The-Hill Portage,
Cities: