Home

  • The Tamalpais Bee Lab Is Back!
    Sign up for a volunteer event this fall!
    Photo: Sara Leon Guerrero
  • Support One Tam
    to care for Mt. Tam
    Join One Tam today
    for a healthy Mt. Tam tomorrow
    Join us
    Photo by Lieven Leroy
  • Casual in Nature:

    Wildlife Picture Index Photo Exhibit

    Visit the virtual exhibit
    Photo: One Tam
  • On the Lookout for Invasive Species
    Early Detection Team releases
    report on findings and response
    Learn about our work
    Photo: Allison Titus/ Parks Conservancy
  • Interactive Marin Park Access Map
    Park status information from
    our five partner agencies
    Open The Map
    Photo: Lee Jester
Explore
Explore

Learn about Mt. Tam and get trail tips

Support
Support

Join One Tam to support our work and your mountain

Volunteer
Volunteer

Get involved in habitat restoration, commuity science, and more!

Events
Events

See all One Tam partner events

One Mountain, One Team

With its sweeping views, miles of trails, and ancient forests, Mt. Tam is a beloved local treasure. But the mountain also faces many challenges such as invasive weeds, forest diseases,
and the effects of climate change. 

The One Tam partnership mobilizes the resources of the National Park Service, California State Parks, The Marin Municipal Water District, Marin County Parks and Golden Gate National Parks Conservancy to ensure a vibrant future for Mt. Tamalpais. 

Join Us!

California State Parks
Marin County Parks
Golden Gate National Parks Conservancy
Marin Municipal Water District
National Park Service

Upcoming Events

 
Mill Valley Multi-Use Pathway (Pohono) Coastal Cleanup Day
Source: Marin County Parks
Meet at the Mill Valley Multi-Use Pathway (Pohono)
Saturday, September 18, 2021, 9am – 12pm
 
McInnis Park Coastal Cleanup Day
Source: Marin County Parks
Meet at the Canoe Dock at McInnis Park
Saturday, September 18, 2021, 9am – 12pm
 
Hal Brown Park Coastal Cleanup Day
Source: Marin County Parks
Meet across from Marin General Hospital at Hal Brown Park at Creekside.
 
Agate Beach Coastal Cleanup Day
Source: Marin County Parks
Meet at the Agate Beach parking lot.
Saturday, September 18, 2021, 8 – 10am
 
Mill Valley Multi-Use Pathway (Sycamore) Coastal Cleanup Day
Source: Marin County Parks
Meet at the roundabout at the end of Sycamore Avenue on the multiuse pathway in Mill Valley.
 
Kent Island Coastal Cleanup Day
Source: Marin County Parks
Kent Island in Bolinas. Meet at the public dock on Wharf Rd in Bolinas (across from the College of Marin biology lab).
 
Tamalpais Bee Lab Event
Source: One Tam Calendar

One Tam is excited to announce the return of the Tamalpais Bee Lab! 

 
McNears Beach Park Coastal Cleanup Day (FULL)
Source: Marin County Parks
Meet in front of the snack bar at McNears Beach Park.
Saturday, September 18, 2021, 9am – 12pm
 
Loma Alta Evening Hike
Source: Marin County Parks
Loma Alta Preserve
Saturday, September 18, 2021, 6 – 8pm
 
Muddy Hollow to the Beach
Source: Marin County Parks
Muddy Hollow
Tuesday, September 21, 2021, 10am – 3pm
 
Tamalpais Bee Lab Event
Source: One Tam Calendar

One Tam is excited to announce the return of the Tamalpais Bee Lab! 

 
Coffee With A Ranger
Source: Marin County Parks
Ring Mountain Preserve
Saturday, September 25, 2021, 8 – 10:30am
 
Evening at Roy's Redwoods
Source: Marin County Parks
Roy's Redwoods Preserve
Sunday, September 26, 2021, 4 – 7pm
 
Movie in the Park! Featuring ZOOTOPIA
Source: Marin County Parks
McInnis Park
Saturday, September 25, 2021, 6:30 – 9pm
 
Vagrant Songbirds
Source: Marin County Parks
Chimney Rock Trail
Wednesday, September 29, 2021, 10am – 2pm
 
Rush Creek/Binford Rd. Litter Clean Up
Source: Marin County Parks
Rush Creek Preserve
Saturday, October 2, 2021, 9am – 12pm
 
Coffee With A Ranger
Source: Marin County Parks
Ridgewood Drive, San Rafael
Wednesday, October 6, 2021, 7 – 9am
 
Tamalpais Bee Lab Event
Source: One Tam Calendar

One Tam is excited to announce the return of the Tamalpais Bee Lab! 

 
Tamalpais Bee Lab Event
Source: One Tam Calendar

One Tam is excited to announce the return of the Tamalpais Bee Lab! 

 
Art in the Park
Source: Marin County Parks
McNears Beach Park
Saturday, October 16, 2021, 10am – 12pm
 
Fall Ball
Source: Marin County Parks
McInnis Park
Saturday, October 16, 2021, 11am – 2pm
 
Tamalpais Bee Lab Event
Source: One Tam Calendar

One Tam is excited to announce the return of the Tamalpais Bee Lab! 

 
Tamalpais Bee Lab Event
Source: One Tam Calendar

One Tam is excited to announce the return of the Tamalpais Bee Lab! 

All Events

Featured Work

Wildlife Picture Index
The One Tam partner agencies are using motion-activated cameras to study wildlife on public lands around Mt. Tam.
Path beside the base of an enormous redwood tree
Roy’s Redwoods
Long loved by the San Geronimo Valley community, Roy’s Redwoods Open Space Preserve offers visitors an immersive experience in an old-growth redwood grove.
Bothin Marsh
With climate change and sea level rise, flooding is increasing in frequency and duration throughout Bothin Marsh - this project is creating a shared community vision for its future.

All Programs & Projects

What People Say

I walk out of this program with more perspective and a powerful mindset, to get out there and make a change. The One Tam LINC high school program made me realize that this is exactly what I want to do with my life: be outdoors and explore, while at the same time giving back to my community.
Nhi Nguyen
LINC 2018 Student
The mountain gives to all of us selflessly and constantly. The challenge is for each of us to consider in what way we can repay the generosity. Invent something, donate, pull weeds, shore up trails, volunteer with One Tam and you will become a Tamalpaian.
Peter Coyote
Co-author and Narrator, The Invisible Peak