flows NE to Colville River 21 mi. SE of head of Ikpikpuk River, Arctic Slope; 25 miles long.
Named by U.S. Geological Survey (USGS) in 1924 for one of Ensign W. L. Howard's Eskimo guides on his trip from the Kobuk River to Point Barrow in the spring of 1886. The name is spelled "Owpuk" in the text (Stoney, 1900, p. 67).