 On July 1, 1908 Grantsville National Forest and Salt Lake National Forest were added.In 1973 Wasatch was combined administratively with Cache National Forest, creating Wasatch-Cache National Forest.In descending order of acreage, the Wasatch National Forest portion is located in Summit, Tooele, Salt Lake, Davis, Uinta (Wyoming), Duchesne, Wasatch, Morgan, Utah, Weber, and Juab counties in Utah except Uinta, which is in southwestern Wyoming.