T'eghes Untnu Bena is a lake located in Matanuska-Susitna County, Alaska. It appears on the Tyonek C-2 SW USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 133.01 feet (40.54 m) above sea level. The nearest populated place is Susitna, approximately 5.6 miles to the E.