on Kukpowruk River, 21 mi. E of Cape Beaufort and 50 mi. S of Point Lay; Arctic Slope. 2 miles wide.
named about 1950 by U.S. Geological Survey (USGS) geologists. by the Beaufort Syncline.
Beaufort Basin,
Amatusuk Hills,
Surprise Creek, Tupikchak Creek, Turbid Creek,