 stanislaus national forest is a united states national forest which manages  of land in four counties in the sierra nevada mountains of northern california. it was established on february 22, 1897, making it one of the oldest national forests. it was named after the stanislaus river. ==geography==  the forest is located primarily in eastern tuolumne county, adjacent to the northwestern part of yosemite national park, but parts of it extend (in descending order of forestland area) into southern alpine, northern mariposa, and eastern calaveras counties. forest headquarters are located in sonora, california. there are local ranger district offices in groveland, hathaway pines, mi-wuk village, and pinecrest.usfs ranger districts by state the emigrant wilderness is located entirely within its boundaries. portions of the carson-iceberg wilderness, including the dardanelles cone, and the mokelumne wilderness are also within the stanislaus national forest. ==features== it contains 78 lakes, and  of rivers and streams. it has  of non-motorized trails, and  of roads,  of which are paved.  the forest contains some  of old growth, which includes lodgepole pine (pinus contorta), jeffrey pine (pinus jeffreyi), and white fir (abies concolor).{{citation | last1 = warbington | first1 = ralph | last2 = beardsley | first2 = debby | year = 2002 | title = 2002 estimates of old growth forests on the 18 national forests of the pacific southwest region | url 
Biosphere_reserves_of_the_United_States IUCN_Category_VI National_Forests_of_California Protected_areas_of_Alpine_County,_California Protected_areas_of_Calaveras_County,_California Protected_areas_of_Mariposa_County,_California Protected_areas_of_Tuolumne_County,_California Protected_areas_of_the_Sierra_Nevada_(U.S.) Stanislaus_National_Forest