flows NW to Colville River 5 mi. E of its junction with Etivluk River, Brooks Range. 30 miles long.
Name spelled "Koo-che-ak" on manuscript map made by an Eskimo about 1890. The Eskimo name probably is "Kugchiak," meaning "new river." Published by Schrader (1904, pl. 3), U.S. Geological Survey (USGS).