Golden Gate National Parks Conservancy One Tam Newsletter

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News and Events
from One Tam



Dear Friend,

Discover your late summer opportunity to connect with the mountain; join the stinkwort safari, learn about the hidden waters of Tam, or celebrate Alpine Dam's 100th year!

~ Your friends at One Tam


Volunteer With Us


Stinkwort Safari: Using Technology to Track Weeds on Tam 
9 am-Noon
Hosted by the California State Parks and One Tam
Help us search for fast-spreading weeds while learning some tricks of the trade! We will give a training on how to search for, remove, and use a smartphone to map some of the most problematic weeds in Marin.   


California Biodiversity Day 2019 Bioblitz at Samuel P. Taylor State Park
7:30-10 pm
Hosted by California State Parks and One Tam
Join the celebration of California Biodiversity Day and participate in a unique bioblitz focused on nocturnal animals at Samuel P. Taylor State Park. Registration required.  


Invasive Plant Patrol at Homestead Valley
10 am-2:30 pm
Hosted by the National Park Service and One Tam
Rove the ridge tops and remove woody invasive shrubs from one of the finest coastal prairies in the park along with stunning views of the Bay and Ocean!

  See all upcoming volunteer events  

one day, two events, so many ways to love tam! 


Volunteers remove trash from the vital landscape and habitat of Creekside Marsh. Photo by Chuck Barnes/NPS.


International Coastal Clean Up Day 
Saturday, September 21, 9 am-Noon
Creekside Marsh at Hal Brown Park, Kentfield 

Join Marin County Parks, One Tam, and folks around the world on this day to give back to our oceans. Click here for a full list of Coastal Cleanup Day opportunities across California and to appreciate the full scope of this day!

Within the One Tam footprint, we will be removing trash from Corte Madera Creek along Creekide Marsh. Come for the whole morning, or just stop by to lend a hand! To join us at Corte Madera Creek, contact Kirk Schroeder at or 415-763-2977.

  view all coastal clean up projects  

Join this Member Hike for a tour of the hydro-ecology and history of springs on Mt. Tam. Photo by Chuck Barnes/NPS.


One Tam Member Hike: The Hidden Waters of Mt. Tam
Saturday, September 21, 9:30 am-1:30 pm
Rock Spring Parking Lot, Mt. Tamalpais

Join Jake Kurzweil, One Tam’s lead researcher of seeps and springs, for a hike through the history and ecology of Mt. Tam Springs. This hike will be difficult but beautiful, covering approximately 6 miles of terrain and 1,000 feet of ascent and descent. 

  Register for Member hike  



From vintage to vital: alpine dam celebrates 100 years! 


Nestled deep in MMWD’s beautiful Mt. Tamalpais Watershed, Alpine Dam continues to play an integral role in supplying clean, local water to our Marin customers—a full century after its construction. Come celebrate the 100th birthday of this iconic structure at a series of community events this September!

Events include:

Cake Cutting
Friday, September 13
Meet us at West Point Inn to celebrate Alpine Dam with cake and gorgeous views of the watershed.

On Site Trivia
Saturday, September 14
Visit the Alpine Dam and stop by our Roving Ranger van to play trivia, win prizes and learn more about Alpine Dam.

MCBC Bike Ride
Saturday, September 21
Join the Marin County Bicycle Coalition (MCBC) for a bike ride starting at Mike's Bikes in San Rafael, riding past Alpine Dam and ending at Pond Farm Brewery in San Rafael. Contact MCBC directly at for cost and final confirmed details.

History Walk
Sunday, September 22
Join one of MMWD's park rangers for a historical walking tour of Alpine Dam. Meet on top of the dam.

  Event details for Centennial  

 Alpine Dam under construction in 1918. Photo courtesy of Marin Municipal Water District.


About Us

California poppy along Mt. Tam's Ridgecrest Blvd



One Tam works to ensure a healthy, vibrant and diverse landscape for our beloved and iconic Mt. Tam. We are the community-supported partnership of Mt. Tam’s land agencies and managers.

One Team leads programs that care for our mountain, inspire our next generation of land stewards and strengthen our local community. We invite you to join us!




Going Further, Together

One Tam brings together inspired community members with its five partners to support the long-term stewardship of Mt. Tam.
One Tam Partner Logos: National Park Service, CA State Parks, Golden Gate National Parks Conservancy, Marin Municipal Water District, and Marin County Parks

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Building 201 Fort Mason, San Francisco CA 94123
(415) 561-3000