flows NW and E to Bonasila River, 41 mi. NW of Holy Cross, Nulato Hills. 50 miles long.
So named by R. H. Sargent, U.S. Geological Survey (USGS), in 1916, because he "found a hawk's nest near its (the stream's) mouth". It is said by some however, that the last sound element of the nearby feature name "Stuyahok" was arbitrarily picked and converted in spelling to "Hawk".