Gega Bena is a lake located in Matanuska-Susitna County, Alaska. It appears on the Tyonek C-2 SE USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 46.80 feet (14.26 m) above sea level. The nearest populated place is Susitna, approximately 2.2 miles to the NNW.