. . "8.28796e+10"^^ . . . . "35.052"^^ . "683971.0"^^ . "9344.56"^^ . "7.92872"^^ . "The Koyukuk River (Ooghekuhno\u2019 in Koyukon) is a 425-mile (684 km) tributary of the Yukon River, in the U.S. state of Alaska. It is the last major tributary entering the Yukon before the larger river empties into the Bering Sea.Rising at the confluence of the North Fork Koyukuk River with the Middle Fork Koyukuk River, it flows generally southwest to meet the larger river at Koyukuk."@en . . . . . . "217.932"^^ . "Koyukuk River"@en . . . . . . . "403.515"^^ .