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Explore

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Support

Join One Tam to support our work and your mountain

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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

 
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

 
Rush Creek Birds
Source: Marin County Parks
Rush Creek Preserve
Wednesday, December 4, 2024, 10am – 2pm
 
Wreath Making Workshop
Source: Marin County Parks
McNears Beach Park
Sunday, December 8, 2024, 12:30am – 2:30pm
 
Habitat Restoration Team
Source: One Tam Calendar

When: Sundays, 9:30 am–2:30 pm

 
Indian Tree
Source: Marin County Parks
Indian Tree Preserve
Sunday, December 8, 2024, 9am – 2pm
 
Limantour Birds
Source: Marin County Parks
Point Reyes National Seashore
Tuesday, December 10, 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;

 
Art in the Park: Ornament Workshop
Source: Marin County Parks
Stafford Lake Park
Sunday, December 15, 2024, 10am – 12pm
 
Family Walk: Indian Tree
Source: Marin County Parks
Indian Tree Preserve
Sunday, December 15, 2024, 10am – 1pm
 
Mycoblitz Mushroom Foray
Source: Marin County Parks
Stafford Lake Park
Sunday, December 15, 2024, 10:30am – 1pm
 
Habitat Restoration Team
Source: One Tam Calendar

When: Sundays, 9:30 am–2:30 pm

 
Senior Stroll: Las Gallinas
Source: Marin County Parks
Las Gallinas Sanitary District
Tuesday, December 17, 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

 
Watershed Stewardship and Naturalist Walk
Source: One Tam Calendar

When: Saturday, December 21

 
Stafford Lake Birds
Source: Marin County Parks
Stafford Lake Park
Sunday, December 22, 2024, 10am – 2pm
 
Salmon of San Geronimo Valley
Source: Marin County Parks
Leo Cronin Parking Lot
Sunday, December 22, 2024, 10am – 12pm
 
Invasive Plant Patrol
Source: One Tam Calendar

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

 
Sensory Storytime with a Ranger (English/Spanish)
Source: Marin County Parks
Novato Library
Saturday, December 28, 2024, 3:30 – 4:30pm
 
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

 
Learn to Pier Fish
Source: Marin County Parks
Paradise Beach Park
Saturday, January 4, 2025, 11am – 1:30pm
 
Habitat Restoration Team
Source: One Tam Calendar

When: Sundays, 9:30 am–2:30 pm

 
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, 2025, 10 am–1 pm;

 
Habitat Restoration Team
Source: One Tam Calendar

When: Sundays, 9:30 am–2:30 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