North Fork of the Koyukuk River

Alaska

Gates of the Arctic National Park and Preserve
201 First Avenue
Fairbanks, Alaska 99701

Designated Reach: December 2, 1980. The segment within Gates of the Arctic National Park.

Classification/Mileage: Wild — 102.0 miles; Total — 102.0 miles.

This river flows from the south flank of the Arctic Divide through broad, glacially carved valleys in the rugged Endicott Mountains of Alaska's Central Brooks Range. It passes between the "Gates of the Arctic" at Boreal Mountain and Frigid Crags.