The Sierra National Forest is located within the Pacific Southwest region of the US Forest Service. The forest is divided into three ranger districts: Bass Lake Ranger District is north and west of the
San Joaquin River. Its Ranger District office is located at 57003 Road 225
North Fork, California, 93643. The district includes 36 camp sites, 17 picnic sites, 7 Off Highway Vehicle Trails, and 10 trails. It includes the Forest Service Offices of
Oakhurst (40343 Hwy 41, Oakhurst, California 93644), and the Clover Meadow Wilderness Office. High Sierra Ranger District is south and east of the San Joaquin River; it has its Ranger District office out of 29688 Auberry Rd P.O. Box 559
Prather, California 93651. This district contains 30 camp sites, 11 picnic sites, and 13 Off Highway Vehicle Trails. It also includes the following Forest Service Offices; the High Sierra visitor information station near Mono Hot Springs on the Kaiser Pass Road, Eastwood visitor information center at Hwy 168 and Kaiser Pass Road at
Huntington Lake, Dinkey Creek visitor information center on Dinkey Creek Road near the Dinkey Creek Campground, Supervisor's Office (an administrative Unit) contains the Sierra National Forest Supervisor's office (1600 Tollhouse Rd Clovis, California, 93611); the Yosemite Sierra Visitor Bureau (40343 Highway 41, Oakhurst, California 93644); and the
Fresno Air Attack Base which is co-located with the Sierra National Forest Emergency Communications Center (2307 and 2309 N Clovis Ave,
Fresno, California 93727) at
Fresno Yosemite International Airport. In addition, the forest has a close relationship with the
Teakettle Experimental Forest which is deep inside the forest and the
San Joaquin Experimental Range which is just outside the forest boundaries. They both fall in the Pacific Southwest Research Station which is based in
Berkeley, California. ==Ecology==