California Environmental Organizations

Altacal Audubon Society

A California Chapter of the National Audubon Society

American River Conservancy

Preserving Rivers and Land for Life

Anza-Borrego Foundation

The nonprofit cooperating association for Anza-Borrego Desert State Park

Arroyos & Foothills Conservancy

Connecting People and Land in the San Gabriel and Crescenta Valleys

Back Country Land Trust

Protecting East San Diego's Rural Heritage

Ballona Wetlands Land Trust

Dedicated to the acquisition, restoration, and preservation of the entire Ballona Wetlands ecosystem in Los Angeles

Batiquitos Lagoon Foundation

Dedicated to the preservation, enhancement and protection of Batiquitos Lagoon

Bear Yuba Land Trust

Enriching the deep community connection with our land - today, tomorrow, and forever

Big Sur Land Trust

Inspiring love of the land and conservation of our treasured landscapes

Bodega Land Trust

Dedicated to the conservation and stewardship of Land and community

Buena Vista Audubon Society

Conservation through education, advocacy, and monitoring

Butte Creek Watershed Conservancy

Protecting, restoring and enhancing the cultural, economic and ecological heritage of the Butte Creek Watershed

Butters Canyon Conservancy

Protecting the Headwaters of Oakland's Peralta Creek

Cache Creek Conservancy

Preserving, restoring, enhancing, and promoting the stewardship of the lands within the Cache Creek watershed

California Environmental Voters

Focused on building the political power to solve the climate crisis, advancing justice, and creating a roadmap for global action.

California Invasive Plant Council

Protecting California's wildlands through science, education, and policy

California Native Plant Society

Working hard to protect California's native plant heritage and preserve it for future generations

Californians Against Waste

Conserving resources. Preventing pollution. Protecting the environment.

Californians for Western Wilderness

Building a constituency for protection of wilderness in the West, as an information clearinghouse for citizens to take effective action.

California Rangeland Trust

Conserving California's working ranches that provide stewardship, open space, and natural habitat for future generations

California Wilderness Coalition

Protecting the natural landscapes that make California unique

Catalina Island Conservancy

Conservation. Education. Recreation.

Cayucos Land Conservancy

Preserving our important places for future generations

Center for Natural Lands Management

Protecting sensitive biological resources through professional, science based stewardship of mitigation and conservation lands in perpetuity

Central Sierra Audubon Society

A chapter of the National Audubon Society serving both Tuolumne and Calaveras counties

Claremont Wildlands Conservancy

Preserving our Hillsides

Cleveland National Forest Foundation

Dedicated to preserving the plants, animals and other natural resources of Southern California mountains by protecting the land and water they need to survive.


Ensuring public access to the California coast

Conejo Valley Audubon Society

Local chapter of the Audubon Society based in Thousand Oaks

Desert Tortoise Preserve Committee

Promoting the welfare of the desert tortoise in its native wild state

Eastern Sierra Audubon Society

The little chapter that could...

Eastern Sierra Land Trust

Working to preserve our rural lands

El Dorado Audubon Society

A local chapter of the Audubon Society serving the Long Beach area

Elkhorn Slough Foundation

Working to protect this precious and scarce environment

Environmental Protection Information Center

Keeping Northern California Wild Since 1977

Escondido Creek Conservancy

Dedicated to the preservation, restoration and protection of the natural open space within the Escondido Creek watershed

Fallbrook Land Conservancy

Protecting the natural beauty and rural character of our community

Fresno Audubon Society

Building a sustainable environment for people, birds, and other wildlife through education, science, and advocacy

Friends of the Arcata Marsh

Raising Awareness of Wetlands, Wildlife, and Wastewater Treatment

Friends of the Dunes

Dedicated to conserving the natural diversity of coastal environments

Friends of the Fiscalini Ranch Preserve

Committed to the on-going restoration and protection of the habitat, and natural and cultural features of the ranch

Friends of the River

The voice of California's rivers

Golden Gate Audubon Society

Dedicated to protecting Bay Area birds, other wildlife, and their natural habitats

Golden State Land Conservancy

A state-wide California land trust

Greenbelt Alliance

The champion of the places that make the Bay Area special


The Cambria Land Trust

John Muir Land Trust

Protecting the Places that make Contra Costa Special

Kern Audubon Society

A California chapter of the National Audubon Society

Kerncrest Audubon Society

Serving our Environment

Laguna de Santa Rosa Foundation

Protecting and Restoring Sonoma County's Ecological Treasure

Laguna Greenbelt

Protecting and Preserving Open Space in Orange County

Lake County Land Trust

Protecting important land resources

Land Conservancy of San Luis Obispo

Together We Save Special Places


Step into the Outside

Land Trust for Santa Barbara County

Working to preserve and enhance our county’s natural open spaces and agricultural heritage

Land Trust of Napa County

Preserving the character of Napa County by permanently protecting land

Land Trust of Santa Cruz County

Santa Cruz County is special and we're working to keep it that way

La Purisima Audubon Society

Serving Northern Santa Barbara County, California

Living Lands Trust

Sustaining Places Across Generations

Los Angeles Audubon Society

Promoting the enjoyment and protection of birds and other wildlife through recreation, conservation and restoration

Los Padres Forestwatch

Protecting Our Public Lands Along California's Central Coast

Madrone Audubon Society

A Sonoma County Chapter of the National Audubon Society

Marin Agricultural Land Trust

Preserving Marin County Farmland

Marin Audubon Society

Conserving and restoring natural ecosystems, focusing on birds, other wildlife, and their habitats

Mattole Restoration Council

Community watershed restoration since 1983

Mendocino Coast Audubon Society

A local chapter of the Audubon Society in the Fort Bragg area

Mendocino Land Trust

Conserving important natural resources of Mendocino County

Mono Lake Committee

Fighting to protect Mono Lake from excessive water diversions to Los Angeles

Monterey Peninsula Audubon Society

A Chapter of the National Audubon Society since 1943

Morro Coast Audubon Society

Serving San Luis Obispo County since 1966

Mountain Lion Foundation

Together, we can save America's lion

Mount Diablo Audubon Society

A local chapter of the Audubon Society based in Walnut Creek

Napa-Solano Audubon Society

Sharing the fun of birding and promoting conservation and scientific understanding of wild birds and their habitats

Nature Collective

Connect. Experience. Protect.

Nature Conservancy - California

Protecting the Golden State

North Coast Environmental Center

Conserve, protect, and celebrate terrestrial, aquatic, and marine ecosystems of northern California and southern Oregon

Northern California Regional Land Trust

Keeping working lands working and wild lands wild

Ohlone Audubon Society

A local chapter serving southern Alameda County

Ojai Valley Land Conservancy

Protecting your views, trails, water, and wildlife

Our City Forest

The leading nonprofit in Silicon Valley for urban forestry and environmental education.

Pacifica Land Trust

Preserving and Protecting the Open Spaces of Pacifica

Palomar Audubon Society

A chapter of the National Audubon Society serving the north San Diego County

Palos Verdes Peninsula Land Conservancy

Preserving land and restoring habitat for the enjoyment and education of all

Palos Verdes/South Bay Audubon Society

Serving the Palos Verdes Peninsula and the Greater South Bay Area

Pasadena Audubon Society

Bringing the excitement of birds to our community through birding, education and the conservation of bird habitats

Peninsula Open Space Trust

Preserve Open Space Close to Home

Peregrine Audubon Society

Serving interior Mendocino County

Placer Land Trust

Protecting Placer County's Natural Wonders for you, your family, and your community

Planning & Conservation League

Devoted to making California a better place to live through enacting environmental protections

Ponoma Valley Audubon Society

Promoting the protection, appreciation and enjoyment of birds and other wildlife through recreation, education and conservation of habitat

Redbud Audubon Society

A chapter of the National Audubon Society, based in Lake County

Redwood Coast Land Conservancy

Dedicated to preserving and protecting coastal lands from the Russian River to the Navarro River

Redwood Region Audubon Society

The northwestern California Chapter of the National Audubon Society

Rivers and Lands Conservancy

Serving Southern California

Russian Riverkeeper

Inspiring the Community to Protect the Russian River Forever

Sacramento Audubon Society

A chapter of the National Audubon Society

Sacramento Valley Conservancy

Open space. For all of us.

San Bernandino Valley Audubon Society

Striving to bring people to their natural environment

Sanctuary Forest

A land and water trust whose mission is to conserve the Mattole River watershed and surrounding areas

San Diego Audubon Society

Leading the way in fostering knowledge and appreciation of the natural world

San Diego River Park - Lakeside Conservancy

Celebrating and Preserving the San Diego River

San Fernando Valley Audubon Society

A chapter of the National Audubon Society

San Joaquin Audubon Society

A California Chapter of the National Audubon Society Serving all of San Joaquin County

San Joaquin River Parkway and Conservation Trust

Conservation, Education, and Recreation

Santa Barbara Audubon Society

A chapter of the National Audubon Society

Santa Clara Valley Audubon Society

Conservation. Education. Birding.

Santa Cruz Bird Club

Sponsors birding walks in and around the county of Santa Cruz

Santa Monica Bay Audubon Society

A chapter of the National Audubon Society

Santa Monica Mountains Trail Council

Dedicated to establishing and maintaining the public trail system throughout the Santa Monica Mountains

Save Mount Diablo

Preserving, defending and restoring natural lands

Save The Redwoods League

Walk Among Giants

Sea & Sage Audubon Society

A leader in creating an understanding of nature in Orange County through conservation, research and environmental education programs

Sempervirens Fund

Preserving Redwood Forests Since 1900

Sequoia Audubon Society

Protecting native birds and other wildlife and their ecosystems in San Mateo County

Sequoia Riverlands Trust

Conserving California's Heartland

Sierra Club - Angeles Chapter

Serving Los Angeles and Orange Counties

Sierra Club - Kern-Kaweah Chapter

Serving the California Counties of Kern, Kings, and Tulare

Sierra Club - Loma Prieta Chapter

Serving San Benito, San Mateo & Santa Clara Counties

Sierra Club - Mother Lode Chapter

Serving 24 counties in northern and central California

Sierra Club - Redwood Chapter

Explore, enjoy, and protect the planet

Sierra Club - San Diego Chapter

Serving San Diego and Imperial Counties

Sierra Club - San Francisco Bay Chapter

Serving Alameda, Contra Costa, Marin, and San Francisco Counties

Sierra Club - San Gorgonio Chapter

Serving the Inland area of Southern California, Riverside and San Bernardino counties

Sierra Club - Santa Barbara-Ventura Chapter

Serving California's Santa Barbara and Ventura counties

Sierra Club - Santa Lucia Chapter

Serving San Luis Obispo County

Sierra Club - Tehipite Chapter

Fresno area

Sierra Club - Toiyabe Chapter

Serving Nevada and Eastern California

Sierra Club - Ventana Chapter

Serving Monterey and Santa Cruz Counties

Sierra Foothill Conservancy

Ensuring that present and future generations will continue to experience and enjoy the land in this region

Sierra Nevada Alliance

Keeping light in the range

Solano Land Trust

Protecting natural areas, working farms, and ranchlands in Solano County

Sonoma County Conservation Action

Educating and directly engaging the public on local environmental issues and policies

Sonoma Land Trust

Preserving what you love about Sonoma County

Sutter Buttes Regional Land Trust

Working to protect the land and natural resources of the Sutter Buttes and the surrounding region

Tamalpais Conservation Club

Guardian of the Mountain since 1912

The Buckeye

Supporting the ecologic and economic sustainability of natural resources and open space in family ownership

Tree People

Helping nature heal our cities

Tree People Land Trust

Stewarding natural and cultural resources through habitat restoration, land conservation, access, education, and community empowerment.

Tri-Valley Conservancy

Preserving Land for Future Generations

Truckee Donner Land Trust

Preserving and protecting scenic, historic and recreational lands with high natural resource values in the greater Truckee Donner region

Ventana Wilderness Alliance

Protecting, preserving, and restoring the wilderness qualities and biodiversity of the public lands within California's northern Santa Lucia Mountains and Big Sur coast

Ventura Audubon Society

A chapter of the National Audubon Society located in Ventura County

Ventura Land Trust

Protecting and conserving open space resources in the Ventura region

Volcan Mountain Preserve Foundation

Keeping it wild!

Western Alliance for Nature

Preserving Natural and Indigenous Heritage

Whittier Audubon Society

A chapter of the National Audubon Society

Wildlands Conservancy

Owns and operates California's largest nonprofit nature preserve system

Wildlife Heritage Foundation

Preserving California’s rich heritage of open spaces, agricultural land, and diverse wildlife

Wintu Audubon Society

Serving Redding and the Shasta County area

Wishtoyo Chumash Foundation

Preserving the wisdom of the ancient Chumash culture and linking it to the present day environmental issues

Yolo Audubon Society

Fostering an appreciation of birds and conservation in Yolo County

Yolo Land Trust

Preserving Yolo County’s agricultural and natural resource heritage

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