Home

Explore
Explore

Learn about Mt. Tamalpais and get trail tips

Support
Support

Join One Tam to support our work and your mountain

Volunteer
Volunteer

Get involved in habitat restoration, community 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. Tamalpais 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

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Devil’s Gulch
Source: Marin County Parks
Samuel P Taylor State Park
Wednesday, November 13, 2024, 10am – 2pm
 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Lichen & Friends Bioblitz
Source: One Tam Calendar

Join us on Mt. Tam for a naturalist adventure! A bioblitz is a quick, intense survey of the species present.

 
Learn to Pier Fish
Source: Marin County Parks
Paradise Beach Park
Saturday, November 16, 2024, 11am – 1pm
 
Beach Whiffle Ball
Source: Marin County Parks
Upton Beach
Saturday, November 16, 2024, 12 – 2pm
 
Lichen & Friends Bioblitz
Source: One Tam Calendar

Join us on Mt. Tam for a naturalist adventure! A bioblitz is a quick, intense survey of the species present.

 
Watershed Stewardship and Naturalist Walk
Source: One Tam Calendar

When: Saturday, November 16

 
Senior Stroll: Hamilton Wetlands
Source: Marin County Parks
Hamilton Wetlands
Tuesday, November 19, 2024, 10am – 12pm
 
Tennessee Valley Tuesday Stewards
Source: One Tam Calendar

When: 1st, 3rd, & 5th Tuesdays, 10 am–2 pm

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Coffee with a Ranger
Source: Marin County Parks
Baltimore Canyon Preserve
Saturday, November 23, 2024, 8 – 10am
 
Coffee with a Ranger
Source: Marin County Parks
Ring Mountain Preserve
Sunday, November 24, 2024, 8 – 10am
 
Las Gallinas Birds
Source: Marin County Parks
Las Gallinas Sanitary Ponds
Monday, November 25, 2024, 10am – 1pm
 
Mt Tam Day of Thanks - Stewardship and Naturalist Walk
Source: One Tam Calendar

When: Tuesday, November 26

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Tennessee Valley Tuesday Stewards
Source: One Tam Calendar

When: 1st, 3rd, & 5th Tuesdays, 10 am–2 pm

 
Rush Creek Birds
Source: Marin County Parks
Rush Creek Preserve
Wednesday, December 4, 2024, 10am – 2pm
 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Planting for Monarchs: Joske Grove
Source: One Tam Calendar

When: Saturday, December 14, 2024, 10 am–2 pm;

 
Tennessee Valley Tuesday Stewards
Source: One Tam Calendar

When: 1st, 3rd, & 5th Tuesdays, 10 am–2 pm

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Watershed Stewardship and Naturalist Walk
Source: One Tam Calendar

When: Saturday, December 21

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Tennessee Valley Tuesday Stewards
Source: One Tam Calendar

When: 1st, 3rd, & 5th Tuesdays, 10 am–2 pm

 
(CANCELED) Tennessee Valley Tuesday Stewards
Source: One Tam Calendar

When: 1st, 3rd, & 5th Tuesdays, 10 am–2 pm

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Planting for Monarchs: San Carlos Way
Source: One Tam Calendar

When: Saturday, January 11, 2024, 10 am–1 pm;

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

 
Invasive Plant Patrol
Source: One Tam Calendar

When: Wednesdays, 10 am–2:30 pm; Registration Required

All Events

Featured Work

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.
Monarch Habitat Enhancement
One Tam partners are now working to identify monarch butterfly overwintering and breeding habitat for restoration in the region, and to plan enhancement efforts.
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