Course
It is commonly assumed that the Kobuk River issues from Walker Lake. However, the headwaters of the river are to the east of Walker Lake in the Endicott Mountains within the Gates of the Arctic National Park and Preserve, just north of the Arctic Circle. It flows briefly south, descending from the mountains through two spectacular canyons (Upper and Lower Kobuk Canyon), then flows generally west along the southern flank of the western Brooks Range in a broad wetlands valley. In the valley it passes a connected community of inland native villages, including Kobuk, Shungnak, and Ambler, where it receives the Ambler River. In the river’s lower reaches, where it passes between the Baird and Warring mountains, it traverses Kobuk Valley National Park, the location of the 25 square miles (65 km2) Kobuk Sand Dunes. It then passes Kiana. The river enters its broad delta approximately 10 miles (16 km) southwest of Kiana. The delta is located in The Hotham Inlet of the Kotzebue Sound approximately 30 miles (48 km) southeast of Kotzebue.
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