It’s through community support that Mt. Tam has been protected for 100 years. And it’s through One Tam that we can protect it for 100 more. But we need your help. Tam’s land managers have the honor of protecting some of the most beautiful, ecologically rich, and well-loved open spaces in the region, and an important source of drinking water. To meet their missions, they must contend with numerous challenges.

One Tam seeks to raise awareness about the need to maintain the long-term health of Mt. Tam, engage more volunteers in caring for its treasured resources, and renew the spirit of philanthropy that has been so fundamental to the preservation of Mt. Tam over the past century.

Tam’s Challenges

Biodiversity and Habitat Loss

Invasive species, forest pathogens, wildfire, erosion, and hydrologic changes threaten precious remnant habitats and their inhabitants. Habitat degradation also affects high-value ecosystem services like soil stabilization, water purification, carbon sequestration and temperature regulation.

Climate Change

Climate change may alter the frequency, intensity and duration of droughts, floods, heat waves and wildfires. Tam’s lands will serve as vital refuges and dispersal corridors for species coping with what may be rapid and severe environmental changes.

Untapped Community Support

Despite a long and deep history of stewardship on Mt. Tam, there is currently no way to donate funds or volunteer to support the mountain as a whole, and current park supporters are not reflective of the demographic diversity necessary to sustain support of these lands into the future.

Programs at Capacity

Volunteers are being turned away and school groups put on wait lists because individual agencies simply do not have the capacity to accommodate them.

Limited Amenities

Well-worn trails, picnic areas and facilities, a shortage of restrooms, and parking and traffic issues in popular areas of the mountain affect the enjoyment and safety of her visitors. Erosion and hydrological changes caused by deferred trail maintenance are also harming stream and wetland habitats and water quality.

Inadequate Interpretation

Wayfinding and interpretive signage is inconsistent and does not adequately meet the needs of Mt. Tam’s visitors nor protect its resources. Interpretive staff and programming are also in short supply.

People’s love for Mt. Tam transcends the jurisdictional boundaries of the agencies responsible for its stewardship. The Tamalpais Lands Collaborative (TLC) will allow land managers to work together in a way that reflects this holistic view, and builds on the community’s long history of conservation, stewardship and giving.

The TLC Approach

A Common Vision

Like the plants and animals that live on these lands, most people view the mountain as a single, interconnected place. The TLC offers a coordinated approach that will demonstrate the power of collective impact and a common vision.

Borderless Solutions

Through the TLC, land managers can work together to address resource issues — especially those that do not recognize jurisdictional boundaries such as invasive weeds, trails and streams — and do so in a more holistic, efficient and cost effective way.

Philanthropic Potential

The TLC will build upon Marin’s long philanthropic tradition by providing a way for the community to support priority conservation and restoration projects, education programs, visitor amenities and stewardship activities.

Broad Community Engagement

Together, we can teach and cultivate the next generation of stewards, reach a wider range of audiences, improve interpretive programming and offer volunteers more ways to share their time and talents with the mountain.

Increased Capacity

Leveraging existing talent, experience, ideas, and resources through collaboration will result in efficiencies never before possible. Additional financial and staff support will further elevate our ability to protect the mountain and serve the public.

Proven Success

The TLC builds on the partnership approach that has been evolving among Marin land agencies over the past two decades. Rather than forming a new organization, the TLC relies on the Parks Conservancy’s existing infrastructure and its communications and fundraising expertise.

TLC Leadership

The Tamalpais Lands Collaborative is guided by an Executive Team comprised of leaders from Mt. Tam’s four land management agencies and the Golden Gate National Parks Conservancy.

Max Korten
Interim Director and General Manager
Marin County Parks

Christine Lehnertz
General Superintendent
Golden Gate National Recreation Area
National Park Service

Krishna Kumar
General Manager
Marin Municipal Water District

Greg Moore
President and CEO
Golden Gate National Parks Conservancy

Danita Rodriguez
Bay Area District
California State Parks

Community Outreach

To help build awareness about the formation and launch of the TLC, the partner organizations have spoken with representatives from a number of community stakeholder groups, including:

The TLC has also been reaching out to the community through participating in events such as:

The TLC partner organizations are committed to continued community outreach, and more information will be included here as our engagement unfolds. If your community stakeholder group would like to have a briefing on the TLC, please contact