The Kanuti is a 175-mile tributary of the Koyukuk River in the U.S. state of Alaska. The river begins near the Arctic Circle and flows generally west, passing under the Dalton Highway near Caribou Mountain. After continuing through a relatively flat basin, it enters a 1,200-foot deep canyon before meeting the larger river near Allakaket. The Kanuti Na…The Kanuti is a 175-mile tributary of the Koyukuk River in the U.S. state of Alaska. The river begins near the Arctic Circle and flows generally west, passing under the Dalton Highway near Caribou Mountain. After continuing through a relatively flat basin, it enters a 1,200-foot deep canyon before meeting the larger river near Allakaket. The Kanuti National Wildlife Refuge covers a large part of the river basin.