Because of You, We Succeed
Your gift makes a difference! Together, we can protect natural land, support wildlife, and connect people to nature.
Make Your Gift
Recent News, Announcements, and Field Notes
Exploring the Diablo Range’s Spectacular Places through Climbs, Wildflower Hikes, Cycling, More
From learning about medicinal herbs found within Mitchell Canyon to scaling rocky cliffs in Pinnacles National Park, our Discover Diablo program has offered numerous and varied free excursions. Participants have…
Read More
Upcoming Activities
Hit the Trails: Mountain Biking
June 15th, 2023
Mangini Ranch Educational Preserve
Beat the Heat and Hike the Suburban Interface in Walnut Creek Open Space
July 8th, 2023
Howe Homestead Park
Mangini Ranch Meditation Hike
August 5th, 2023
Mangini Ranch Educational Preserve
Our Land Conservation Work
Preserve
We protect natural lands through acquisition; cooperative efforts with parks, developers, and landowners; and conservative easements.
Learn MoreDefend
We defend Mount Diablo and its foothills from threats of development through land use planning and advocacy.
Learn MoreRestore
We restore habitats prior to transfer to public agencies for permanent preservation and public use.
Learn MoreEnjoy
We help people enjoy Diablo's parks through events and educational and recreational opportunities.
Learn More
Many Acres of Wild Lands Have Been Saved
Protected Lands from 1971–2022
In 1971, there was just one park on Mount Diablo. It consisted of only 6,788 protected acres, mostly around the peak. Working with partners such as California State Parks, Contra Costa County, the East Bay Regional Park District, local cities, the Coastal Conservancy, Contra Costa Water District, and others—we, together with the help of generous supporters like you, have pieced together a conserved expanse of Diablo wild lands that today is greater than 120,000 acres, an area bigger than Point Reyes National Seashore or the Golden Gate National Recreation Area.
Although we and our partners have had tremendous success at reassembling a large swath of the wild lands around Mount Diablo, there is still much work to do to save the remaining unprotected lands and allow our community to grow.
Protected Lands
