4 miles long.
Local name reported in 1954 by U.S. Geological Survey (USGS).
Big Island, Gemodedon Island, Megotsol Island, Milady Island, Nulato Island,
Rivers:Holtilyet Slough, Patsy Slough, Soonkakat River,
Streams:Happy Slough, Mukluk Creek, Negotsena Creek, Squirrel Creek,