Description
Located in sec 23,T1N,R9W, San Bernardino Meridian. 1.6 km (1 mi) southeast of Big Dalton Reservoir, 2.6 km (1.6 mi) northwest of San Dimas Reservoir, and 6.7 km (4.2 mi) northeast of Glendora. (US-T121)
History
Named in honor the the late W A Johnstone, one of the leaders in conservation and forestry activities in Califormia for many years. (US-T121)