The West Marin region, of Marin County California is a part of a robust watershed, but its defining feature is the vast Pacific Ocean, which surrounds its shores. For thousands of years humans have depended on these rich waters for food, clothing, and transport. Today, these waters still provide those elements, but have also have become places for the masses to recreate and relax. With climate change, pollution, shifting political priorities, tourism and other factors impacting our environment, EAC remains fastidious in reviewing and researching issues important to our coastal communities. 

Located just an hour from San Francisco, our mission-based work focuses on environmental issues facing the coastal communities of West Marin, the largest rural region of Marin County, California. The area generally extends from Dillon Beach in the north to Muir Beach in the south and from Nicasio and the San Geronimo Valley out to the Pacific Ocean. The area includes several unincorporated coastal communities (BolinasDillon BeachInvernessMarshallMuir BeachOlemaPoint Reyes StationStinson Beach, and Tomales), and is home to approximately 16,000 people, or about 6.5% of the population of Marin County, and receives over 2+ million visitors a year in search of respite, relaxation, and recreation. 

Since 1971, EAC has been actively advocating for water protection from Dillon to Muir beaches. Our waters work is defined by the watersheds of Tomales Bay and Bolinas Lagoon. Our work is focused on bringing people, science and policy together to champion innovative solutions for local environmental problems and threats. 

For almost fifty years, we have worked on various projects to protect vital ecosystems, defend critical legislation, enforce accountability of leaders and legislators and rally our community to become stewards of their backyard because a healthy watershed and ocean means a healthy planet. A recent study confirmed that watershed groups like EAC and the Tomales Bay Watershed Council have a positive impact on local water quality.

We actively engage in coastal protection policy work and climate change planning efforts through submitting comments, testifying, community engagement, and participating in stakeholder groups. Visit some of the links below to learn more about our specific past and current program work.

SUPPOrt Our Work

Protecting our local watershed through advocacy, engagement and education is at the forefront of EAC’s mission this spring. It has been a windy and wet winter and spring in Northern California this year, and while concerns over drought are reduced, the winter storms highlight coastal vulnerabilities as we face the impacts of climate change and sea-level rise in our communities…Read More


© Carlos Porrata

© Carlos Porrata


© Carlos Porrata

© Carlos Porrata


Bolinas 2018 © Birgit O'Connor

Bolinas 2018 © Birgit O'Connor

Waters Advisory Committee:

EAC’s committees provide expertise and advice on the complicated issues facing our environment. Our Waters Advisory Committee dives deep into water-related issues and makes recommendations to the EAC board, as well as helping guide staff decision-making. This Committee works on issues concerning marine, coastal, freshwater, and climate change issues impacting water resources in West Marin, and has developed a set of guiding principles for our work on issues facing Tomales Bay, Bolinas Lagoon, and their watersheds. Both Tomales Bay and Bolinas Lagoon are wetlands of international significance.


  • David Weinsoff, Esq., Secretary

  • Terence Carroll, Treasurer


  • Morgan Patton, Executive Director

  • Ashley Eagle-Gibbs, Conservation Director


Learn more about West Marin's unique and irreplaceable landscapes and our colleagues: