What is One Tam?
Mt. Tamalpais State Park, one of 280 units under the California Department of Parks and Recreation, encompasses 6,300 acres of land on Mt. Tamalpais.
Lands on the northeast side and along the base of Mt. Tam fall within Marin County Parks’ network of preserves.
For three decades, the nonprofit Parks Conservancy has worked with the public agencies and community organizations on restoration projects, trails, and volunteer and youth programs in Marin County.
Marin Water, a public utility providing water to 186,000 people in Marin County, manages 18,600 acres of watershed on the northern flank of the mountain for public use.
(Golden Gate National Parks)
Portions of the west side of the mountain, including Muir Woods National Monument, are managed by the National Park Service.
Individuals, community organizations, and local businesses can all help support our restoration, stewardship, and education efforts. Supporting One Tam supports the mountain!
Share your time and talents with Mt. Tamalpais! One Tam supports the volunteer efforts of all of our partners and also offers a number of special opportunities to give back to the mountain that gives us all so much.
Inspiring future Mt. Tamalpais stewards and supporters is essential to continue its long legacy of community care. With the mountain as a classroom, young stewards learn restoration practices, science, and leadership skills, and create meaningful experiences that will last a lifetime.
Mt. Tamalpais’ diverse wildlife, important habitats, and much-loved trails are the focus of a wide array of restoration and stewardship work. One Tam brings together the expertise and resources of its partners with additional funding and community support to care for Mt. Tamalpais in a way that none of us could do alone.
Mt. Tamalpais is an ecological treasure. But climate change, invasive species, forest diseases, and other challenges affect its plants, animals, water, and air. While we all have a role to play in helping keep this place healthy and resilient, how do we know what we need to do? Scientists and managers came together to find out: how healthy is Mt. Tamalpais?
Landscape-scale stewardship is how we work together across boundaries to care for the places we love, enjoy, and depend upon, and how we continue to renew and sustain these places for current and future generations. The One Tam partnership embodies this approach by creating a more seamless network among Mt. Tamalpais’ land managers. Learn more about how we are going further together.
Highlights from our programs and projects can be found in the Parks Conservancy's annual reports.
View documents below that describe the overall direction for our work, plus current activities:
With few well-documented models to inform this kind of partnership, the One Tam partners are forging new ground as they determine how best to work together for Mt. Tamalpais, and how to measure the benefits of collaboration. Researchers studied One Tam to understand the strengths and challenges of this new partnership model, and to assess its effectiveness and reach. Read more about what they found in the reports below.
- Managing Public Lands for Impact and Sustainability: The Tamalpais Lands Collaborative Case Study (2014)
- Developing Landscape-Scale Partnerships: The Tamalpais Lands Collaborative Case Study 2 (2015)
- Investing in Landscape-scale Stewardship: The Tamalpais Lands Collaborative Case Study 3 (2017)
- Generating, Scaling Up, and Sustaining Partnership Impact: One Tam's First Four Years (2018)
This research and One Tam's success led to the development of a new model—the Partnership Impact Model™ for measuring partnership impact. Learn more about the model and get a guide to evaluating partnership success.