Berryessa Snow Mountain
Berryessa Snow Mountain is a high-elevation landform in Northern California, featuring alpine peaks, large reservoirs, and long-distance trail corridors. The monument protects part of the ancestral lands of local Native tribes and supports diverse ecosystems.
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Geography
| Continent | North America |
|---|---|
| Region | Western US |
| Subregion | Pacific Northwest |
| Country | United States |
| State | California |
| County | Napa County, Mendocino County, Lake County, Colusa County |
| Timezone | AmericaLos Angeles |
| Latitude | 39.5 |
| Longitude | -121.4 |
| Maps |
11:55 AM LOCAL TIMEBerryessa Snow Mountain is a rugged, high-altitude landform rising above the valleys of north-central California. Its core is a backbone of alpine peaks and passes, with summits reaching roughly 2800 meters and deep cirques carved by past glaciers. The region is a watershed source for major rivers and features several significant reservoirs, including Lake Berryessa and Clear Lake. Trails and access are geared toward backcountry hiking, multi-day passes, and remote camping, with options for cross-range routes and high-elevation lake basins. The monument area was established to protect ecological habitats — from forested slopes and montane meadows to sensitive riparian zones — and to recognize the cultural importance of the landscape to native peoples. Expect variable weather, winter snow, and seasonal access constraints that come with high mountain country.
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