Tl'et' Qelchentnu is a stream located in Matanuska-Susitna County, Alaska. It appears on the Tyonek C-1 NW USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 76.62 feet (23.35 m) above sea level. The nearest populated place is Kroto (historical), approximately 0.0 miles to the ENE.