Susitna Valley is a valley located in Matanuska-Susitna County, Alaska. It appears on the Tyonek B-2 SW USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 17.65 feet (5.38 m) above sea level. The nearest populated place is Tuqen Kaq' (historical), approximately 4.0 miles to the N.