The Emigrant Wilderness of Stanislaus National Forest is a wilderness area in the Sierra Nevada. It is bordered by Yosemite National Park on the south, the Toiyabe National Forest and the Hoover Wilderness on the east, and State Route 108 over Sonora Pass on the north. It is an elongated area that extends northeast about in length and up to in width. Watersheds drain to the Stanislaus and Tuolumne Rivers. This area is entirely within Tuolumne County, California and is approximately east of San Francisco, California and south of Lake Tahoe. The Emigrant Wilderness is a glaciated landscape of scenic beauty. The northeastern third of the Wilderness is dominated by volcanic ridges and peaks; the remaining areas consist of many sparsely vegetated, granitic ridges interspersed with numerous lakes and meadows. Elevations range from below near Cherry Reservoir to at Leavitt Peak, but the elevation range of most of the popular areas is . Precipitation averages annually, 80% of it in the form of snow. Snowpacks typically linger into June, sometimes later following very wet winters. Summers are generally dry and mild, but afternoon thundershowers occur periodically and nighttime temperatures could dip below freezing anytime. History Various native peoples occupied this area for 10,000 years, spending the summer and early autumn hunting in the high country and trading with groups from the eastern side of the Sierra Nevada. The most recent groups were the Sierra Miwok of the western slope and Piute of the Great Basin. Following the discovery of gold in 1848, large numbers of miners and settlers came to the Sierra and the native cultures quickly declined. In September–October 1852, the Clark-Skidmore party became the first emigrant group to travel the West Walker route over Emigrant Pass, continuing through a portion of the present-day Emigrant Wilderness. Several more emigrant parties were enticed by officials from Sonora to use this route in 1853, but it was a very difficult passage with many hardships and was soon abandoned. Relief Valley and Relief Reservoir were so named because of the assistance some emigrants received there from residents of the Sonora area. In 1931, the United States Forest Service designated this area for primitive management as the Emigrant Basin Primitive Area. On January 4, 1975, the Emigrant Basin Primitive Area was designated as the Emigrant Wilderness. Dam Controversy Since 1975, 18 small dams in the Emigrant Wilderness have been the source of an