heads at glacier terminus, flows N to Okpikruak River 11 mi. SW of its junction with Okokmilaga River, Brooks Range
So named in 1949 by W. W. Patton, U.S. Geological Survey (USGS), during exploration of Naval Petroleum Reserve No. 4.
Imnatchiak Bluff, Sivogakruak Bluff,
Rivers:Middle Fork Okpikruak River, Okpikruak River,
Streams: