Wilderness Landscape & Natural Heritage
Berryessa Snow Mountain National Monument spans approximately 330,780 acres across five Northern California counties: Lake, Napa, Yolo, Colusa, and Glenn. This vast expanse includes a wide range of geographic features, from the forested peaks of Snow Mountain to the clear waters of Lake Berryessa, one of California’s largest reservoirs. The monument encompasses portions of the Coast Ranges, characterized by diverse ecological communities such as mixed evergreen forests, chaparral, oak woodlands, and riparian corridors. The area supports a variety of wildlife including black-tailed deer, mountain lions, black bears, and numerous bird species, some of which are endemic or sensitive to habitat loss. Historically, the landscape has significance to the native Pomo, Patwin, Wintun, and Wappo peoples, and it contains archaeological sites reflecting thousands of years of indigenous presence. Recreational opportunities are rich and varied, featuring hiking and backpacking on extensive trail networks, mountain biking on designated routes, fishing in Lake Berryessa and local streams, and birdwatching. Scenic drives offer access to panoramic overlooks, while fishing and paddle sports on the lake provide water-based adventure. Key landmarks include the Snow Mountain summit, the Hell Hole Reservoir, and scenic points along Putah Creek. The monument appeals to visitors seeking solitude, natural beauty, and a chance to explore a less-visited but ecologically important part of California’s landscape.
