The Sierra Nevada is a mountain range that lies primarily in the state of California with the Carson Range spur expanding into Nevada. The Sierra runs 400 miles north to south, and 50 to 80 miles east to west. The Sierra houses General Sherman, the world’s largest tree by volume; Lake Tahoe, the largest alpine lake in North America; and Mount Whitney, the highest point in the lower 48 United States.

The Sierra is rich in natural resources. It produces 60% of California’s water supply and supplies the state with 50% of its hydroelectric energy. Wildlife is abundant with 3500 plant, 572 animal, and 321 aquatic species. This is a big weight to bear, all while hosting 788,000 residents and 50 million annual visitors.

This region is at risk, and the Alliance is leading the way to build resiliency in the face of climate change and explosive wildfire.

Our Mission: We unite people and organizations to protect Sierra Nevada ecosystems and communities.

Our Vision: Every Sierra ecosystem and community is healthy, resilient, and collectively cared for through thriving partnerships, as a legacy for future generations.