Marin has many dedicated organizations related to our environment.
Here are links to a few:

Audubon Canyon Ranch

4900 Highway One, Stinson Beach, CA 94970
Phone:   (415) 868-9244
Preserves properties as sanctuaries for native plants and animals, educates children about protecting the environment, trains adults to participate in the education program, and conducts conservation.

Bay Area Ridge Trail Council

1007 General Kennedy Avenue – Suite 3
San Francisco, California 94129
Phone 415.561.2595
Fax 415.561.2599
The Bay Area Ridge Trail is a 500-mile multiple-use trail connecting parks and preserved open spaces along the ridge lines surrounding California’s San Francisco Bay. More than half of the trail is complete, open to the public, and in use.

Planning, promotion, and construction of the Bay Area Ridge Trail is the responsibility of the Bay Area Ridge Trail Council, a non-profit organization offering outings, volunteer opportunities, and membership benefits.
Bay Model Visitor Center

2100 Bridgeway, Sausalito, CA 94965
Phone:   (415) 332-3871
Located on Richardson Bay in Sausa lito, California, is a unique scientific tool for exploring water movement patterns in the San Francisco Bay-Delta Estuary.
The Bay Institute

55 Shaver Street, San Rafael, CA 94901
Phone:   (415)721-7680
Fax:   (415)721-7497
Mission is to protect and restore the ecosystems of San Francisco Bay, the Sacramento-San Joaquin Delta and the rivers, streams and watersheds tributary to the estuary.
Big Lagoon Wetland and Creek Restoration Project

Golden Gate National Recreation Area
Division of Planning and Technical Services
Fort Mason, Bldg 201, 2nd Floor
San Francisco, CA 94123
Located at Muir Beach, the mouth of Redwood Creek is a complex mosaic of wetland, riparian, sand dune, and creek habitats. The National Park Service and Green Gulch Farm (each of whom own portions of the restoration area) are working together to develop a conceptual plan to restore the Big Lagoon Wetland and lower Redwood Creek to a functioning, self-sustaining ecosystem.
California Alpine Club

P.O. Box 2180, Mill Valley, CA 94942
The purposes of this club are to explore, enjoy and protect the natural resources or our land, including wildlife, forests and plants, water and scenic values; to support and promote educational programs on these and related topics; and at all times to protect and, as far as we are able, to improve the environment in which we live. The club maintains lodges on Panoramic Highway, and at Echo Summit in the Sierra Nevada

California Native Plant Society -Marin Chapter

1 Harrison Avenue, Sausalito, CA 94965
Our Mission is to Increase Understanding and Appreciation of California’s Native Plants, and to Preserve Them in Their Natural Habitat Through Scientific Activities, Education, and Conservation.

California State Parks

Marin Sector Office
PO Box 1016
Novato, CA 94948
(415) 898-4362

Angel Island Sector Office
PO Box 318
Tiburon, CA 94920
(415) 435-1915

Trail information, volunteer opportunities, report trail problems:
• China Camp State Park (415) 456-0766
• Mount Tamalpais State Park (415) 388-2070
• Mount Tamalpais S.P. Maintenance Shop (415) 388-6386
• Olompali State Historic Park (415) 892-3383
• Samuel P. Taylor State Park (415) 488-9897
• Tomales Bay State Park (415) 669-1140

• Individual park websites (Find a Park)
• Mount Tamalpais State Park
• Angel Island State Park
California State Parks Foundation

800 College Avenue
P.O. Box 548
Kentfield, California 94914
Phone: (415) 258-9975
Fax: (415) 258-9930
The California State Parks Foundation is dedicated to preserving every leaf, blade of grass, and grain of sand from the shores of Año Nuevo to the peaks of the Sierra Nevada.


P O Box 316, Bolinas, CA 94924
Phone:   (415) 468-0970
A nonprofit health and environmental research institute, located on a 60 acre coastal site at the southern entrance of the Point Reyes National Seashore.
Environmental Education Council of Marin

833 Fourth Street
San Rafael, CA 94901
Phone: 415-485-4908
Our vision is that by the year 2005, environmental education in Marin County, California,will be a lifelong learning process.
Environmental Forum of Marin

P O Box 74, Larkspur, CA 94977
Phone:   (415) 479 – 7814
Dedicated to preserving the quality of our environment through education.
Friends of Corte Madera Creek

Box 415, Larkspur, CA 94977
Phone:   (415) 457-6045
Fax:   (415) 457-6045
Friends of Corte Madera Creek Watershed is a grassroots environmental organization devoted to protecting the Corte Madera creek and its tributaries.
Geothermal Education Office

Phone:   (800) 866-4GEO
Fax:   415)435-7737
Provides free information and materials to increase students’ awareness and understanding of geothermal energy.
Golden Gate National Recreation Area

Hiking Information
For the most up-to-date information regarding conditions in Golden Gate National Recreation Area and Muir Woods call:
• Marin Headlands Visitor Center (415) 331-1540
• Fort Mason Visitor Center (San Francisco) (415) 561-4700
• Muir Woods Visitor Center (415) 331-1563
• Emergencies: US Park Police Dispatch (415) 561-5505 — Golden Gate National Recreation Area — Muir Woods National Monument — Fort Point National Monument

Problem Reporting Information
To report routine trail condition problems, use the same visitor center numbers as above; the information will be recorded and passed on to the appropriate crews.

Volunteering Information
Information about the park’s volunteer program is available on the website or by calling one of the visitor centers. Other volunteer opportunities are being developed in conjunction with the Golden Gate National Parks Conservancy and the Trails Forever Initiative. The park-wide phone number for volunteer information is
415-4R-PARKS (415-477-2757).

Green Collar Works

P.O.Box 54, San Anselmo, CA 94979
Phone:   (415) 459-2837
Fax:   (415) 459-2837
An innovative employment and training program which trains individuals, creates jobs and promotes environmental sustainability.
Headlands Institute

Golden Gate National Recreation Area, Building 1033,
Sausalito, CA 94965
Phone:   (415) 332-5771
Fax:   (415) 332-5784
A member of Yosemite National Institutes, a private, non-profit organization dedicated to creating sustained global environmental stewardship through educational adventures in Nature’s classroom.

Marin Agricultural Land Trust (MALT)

P O Box 809, Point Reyes Station, CA 94956
Phone:   (415) 663-1158
Fax:   (415) 663-1099
Preserves farmland in Marin County, California, through conservation easements, public education (including hikes and tours of farms, ranches and gardens) and advocacy.
Marin Conservation Corps

27 Larkspur Street
San Rafael, CA 94901
Phone:   (415) 454-4554
Fax:   (415) 454-4595
Their mission is to develop the youth of Marin County by providing meaningful employment, education and training opportunities through projects that conserve natural resources, deliver human services and respond to public emergency.
Marin Conservation League

55 Mitchell Blvd., Suite 21, San Rafael, CA 94903
Phone:   (415) 472-6170
Fax:   (415) 472-1404
MCL was formed in 1934 to protect Marin’s natural assets and its issues committees continue to work to make environmental protection a priority in the public decision-making process.

Marin County Bicycle Coalition

733 Center Blvd., Fairfax, CA 94930

(415) 456-3469

The Marin County Bicycle Coalition (MCBC) has been steadily improving our county’s road and path facilities for walkers and bikers since we formed in 1998.

County of Marin Environmental Links @

Marin Civic Center
San Rafael, CA 94903
Phone: (415) 499-7000
If you do not see it here, visit for additional environmental organizations.
Marin County Department of Parks, Open Space and Cultural Services (MCOSD)

Marin County Civic Center
3501 Civic Center Drive, Room 415
San Rafael, CA 94903-4155
(415) 499-6387 – Civic Center Administrative Office
(415) 499-3778 – Volunteer Program Office
911 – Emergencies (415) 479-2311 – Sheriff’s Office 24-hour Dispatch
(415) 499-6405 – Field Office (Ranger Staff) – email – County of Marin Web Page – Marin County Open Space District Web Page
Marin County Stormwater Pollution Prevention Program (MCSTOPPP)

P O Box 4186, San Rafael, CA 94913
Phone:   (415) 499-6528
Fax:   (415) 499-7221
MCSTOPPP was formed to prevent storm water pollution and protect and enhance water quality in creeks and wetlands.
Marin Nexus (formerly MCA/VCM)

650 Las Gallinas Avenue
San Rafael, CA 94903
Phone: 415-479-5710
Fax: 415-479-9878
Marin Nexus supports and promotes the work of Marin nonprofits (including TCC) and volunteers in meeting the needs of our community.
Marin Municipal Water District Roads and Trails Plan

Main Office:
Marin Municipal Water District
220 Nellen Avenue
Corte Madera, CA 94925

Sky Oaks Ranger Station:
P.O. Box 865
Fairfax, CA 94978
(415) 945-1181
MMWD is working on the Mt. Tamalpais Road and Trail Management Plan (RTMP). The purpose of the RTMP is to reduce the impact of roads and trails on water quality and ecosystems. Specifically, we are aiming to reduce the amount of harmful sediment entering aquatic habitats and our drinking water supply.
The Marine Mammal Center

Marin Headlands, 1065 Fort Cronkhite, Sausalito, CA 94965
Phone:   (415) 289-7325
Fax:   (415) 289-7333
We recognize our interdependence with marine mammals and our responsibility to use our awareness, compassion and intelligence to ensure their survival and the conservation of their habitat.
City of Mill Valley

26 Corte Madera Ave., Mill Valley, CA 94942
Phone:   (415) 388-4033
Fax: (415) 381-1736
Mill Valley is nestled at the base of Mt. Tamalpais and a good starting or ending point for a day in and around the Mountain..
Friends of Mount Tam (formally the Mount Tamalpais Interpretive Association)

P.O. Box 3318, San Rafael, CA 94912
Phone: (415) 258-2410
We are a volunteer California state parks cooperating association. Our purpose is to promote conservation, education, and interpretation at Mount Tamalpais State Park. We:
Staff the Visitor Center at East Peak.
Sponsor interpretive hikes for the public.
Sell or distribute free of charge interpretive and educational materials.
Otherwise aid. in conserving and interpreting areas of the State Park System.
Raise funds to support these activities.

North Bay Riparian Station

2100 Bridgeway, Sausalito, CA 94965
Phone:   (415) 332-1941Fax:   (415) 332-0761
Our mission is to improve the health of watershed ecology by providing programs that support environmental education, restoration and monitoring, all in an atmosphere of community collaboration.

Point Reyes National Seashore

Headquarters Office
Point Reyes Station, CA 94956
(415) 464-5100 – General Information
(415) 464-5157 — Trail Maintenance Issues, Contact Bill Michaels, Trails Foreman
(415) 464-5145 — Volunteer Opportunities, Contact Doug Hee, Interpretive Ranger (then click on “In Depth”) – National Park Service, Point Reyes N.S. Web Page

PRBO Conservation Science (Point Reyes Bird Observatory)

4990 Shoreline Hwy., Stinson Beach, CA 94970
Phone:   (415) 868-0655
Mission is to conserve birds and the environment using science to understand and find solutions to problems threatening wildlife populations and ecosystems.
Redwood Creek Watershed

Jennifer Vick
Redwood Creek Watershed Panning Manager
NPS, Golden Gate National Recreation Area
Fort Mason Bldg. 201 Fl 2
San Francisco, CA 94123
The Redwood Creek Watershed encompasses an 8.9 sq. mile area on the southwest slopes of Mt. Tamalpais. It extends from the mountain’s peaks, through Muir Woods, to the Pacific Ocean at Muir Beach.
Resource Renewal Institute

Pier One, Fort Mason Center, San Francisco, CA 94123
Phone:   (415) 928-3774
Fax:   (415) 928-6529
Promotes the implementation of green plans–long-term, comprehensive strategies designed to achieve sustainability.

Slide Ranch

2025 Shoreline Highway, Muir Beach, CA 94965
Phone:   (415) 381-6155
Fax:   (415) 381-5762
A non-profit agricultural and environmental education center in a small-farm, coastal wilderness setting.
Trips for Kids

610 4th St., San Rafael, CA 94901
Phone:   (415) 458-2986
Trips for Kids is a Bay Area non-profit that provides mountain bike outings, environmental education and earn-a-bike programs for kids that would not otherwise be exposed to these types of activities.
The West Point Inn

Railroad Grade, Mt. Tamalpais
(1000 Panoramic Highway, Mill Valley, CA 94941)
General Information:   (415) 388-9955
For Reservations: (415) 646-0702
99 years old this year!
The Inn consists of 5 rustic cabins (including one with an accessible bathroom), a communal fully equipped kitchen, a large living area with fireplace, a deck with phenomenal views, a single use restroom on the deck with a roll-in shower, and additional guestrooms upstairs in the main lodge. Overnight stays are $30 per night per adult. Children 5-12 ($12) and children under five stay for free. You must bring bed sheets and pillowcases as well as your own food.

76 Albert Park Lane (P.O. Box 150930), San Rafael, CA 94915
Phone:   (415) 453-1000
Fax:   (415) 456-0594
Terwilliger Nature Education and Wildlife Rehabilitation

The Dipsea

The Dipsea Race
Post Office Box 30
Mill Valley, California
94942 Phone:   (415) 331-3550
First run in 1905, the Dip sea is the oldest trail race in America. It is run every year on the second Sunday in June. The scenic 7.4 mile course from Mill Valley to Stinson Beach is considered to be one of the most beautiful courses in the world.