Deer Tank is a reservoir located in El Paso County, Texas. It appears on the Hueco Tanks USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 4,769.00 feet (1,453.59 m) above sea level. The nearest populated place is Hueco Mountain Estates Number 5 Colonia, approximately 3.2 miles to the WNW.