Ivishak River

Upper reaches of the Ivishak River in the Brooks Range

It rises in the Brooks Range to the Continental Divide and flows first in a northeasterly, then northwesterly direction through the Philip Smith Mountains, the northern foothills of the Arctic National Wildlife Refuges and finally the tundra of the coastal plain. The Ivishak flows about 100 km south of Prudhoe Bay in the Sagavanirktok River, which flows into the Beaufort Sea.

The 129 km long part of the Ivishak River in the Arctic National Wildlife Refuge along with the entire headwaters and an unnamed tributary of the Porcupine Lake in 1980 were reported by the Alaska National Interest Lands Conservation Act as a National Wild and Scenic River.

Prudhoe Bay, Alaska Alaska North Slope Continental Divide of the Americas Alaska National Interest Lands Conservation Act National Wild and Scenic Rivers System Alagnak River Alatna River Andreafsky River Aniakchak River Beaver Creek (Alaska) Birch Creek (Alaska) Charley River Delta River Fortymile River Gulkana River John River (Alaska) Kobuk River Koyukuk River Noatak River Nowitna River Selawik River Sheenjek River Tinayguk River Tlikakila River Unalakleet River Wind River (Yukon–Koyukuk Census Area, Alaska)
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