Emergency Sheep Hunting Closure in Units 23 & 26(A)
All sheep seasons in Game Management Units 23 and 26(A) for all resident and nonresident hunters are closed due to severe decline in sheep numbers in the contiguous populations of the De Long and Schwatka Mountains. More »
North Fork of the Koyukuk River
NPS Photograph Teri McMillan
The North Fork of the Koyukuk flows from the south flank on the Arctic Divide through broad, glacially carved valleys in the rugged Endicott Mountains of the Central Brooks Range. It passes between Boreal Mountain and Frigid Crags dubbed the "Gates to the Arctic" by Bob Marshall. The North Fork joins the Middle Fork and can be run all the way to Bettles Field.
Did You Know?
Three caribou herds migrate through Gates of the Arctic National Park and Preserve in the Spring and Fall.