|Eldorado National Forest|
|Location||El Dorado, Amador, Alpine, Placer counties, California, and Douglas County, Nevada, United States|
|Nearest city||Placerville, CA|
|Area||596,724 acres (2,414.86 km2)|
|Established||July 28, 1910|
|Governing body||U.S. Forest Service|
|Website||Eldorado National Forest|
Most of the forest (72.8%) lies in El Dorado County. In descending order of land area the others counties are: Amador, Alpine, and Placer counties in California; and Douglas County in Nevada with 78 acres (320,000 m2). The forest is bordered on the north by the Tahoe National Forest, on the east by the Lake Tahoe Basin Management Unit, on the southeast by the Humboldt-Toiyabe National Forest, and to the south by the Stanislaus National Forest.
A complicated ownership pattern exists. The parcels of Other Ownership (private or other Agency land) are mostly isolated and surrounded on all sides by government land. An opposite pattern occurs outside of the Forest Boundary where several small scattered pieces of National Forest lands are separated from the main body and surrounded by lands of Other Ownership.
The Forest ranges in elevation from 1,000 feet (300 m) in the foothills to more than 10,000 feet (3,000 m) above sea level along the Sierra crest. The mountainous topography is broken by the steep canyons of the Mokelumne, Cosumnes, American, and Rubicon rivers. Plateaus of generally moderate relief are located between these steep canyons.
The Desolation Wilderness is located within the forest's boundaries, as is most of the Mokelumne Wilderness (which extends into neighboring Stanislaus National Forest and Humboldt-Toiyabe National Forest).
A cool montane version of Mediterranean climate extends over most of the forest with warm, dry summers and cold, wet winters.
The principal plant communities found here are:
The major commercial Forest species are White Fir, Red Fir, Ponderosa Pine, Jeffrey pine, Sugar Pine, Douglas Fir, and Incense Cedar.
Water is a major resource of the Eldorado National Forest. The forest receives about 56 inches (1,400 mm) of precipitation annually. Average annual runoff is about 29 inches (740 mm). This is equal to an annual water yield of 2.4 acre-feet (3,000 m3) per acre (737,000 m³/km²); therefore National Forest lands yield an estimated 1,444,000 acre-feet (1.781×109 m3) annually.
The Eldorado National Forest has a high density of transportation routes, with 2,367 miles (3,809 km) of roads, and 349 miles (562 km) of trails. Roads under Forest Service jurisdiction total 2,158 miles (3,473 km). There are 209 miles (336 km) of county roads, and 400 miles (640 km) of private roads within the National Forest boundaries.
The forest was formed by the last ice age.
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