Home 2018-05-23T17:25:27+00:00
Endless Green Hills... or Endless traffic?
Help us raise $50,000!

Your donation will be matched dollar-for-dollar
thanks to the William H. Donner Foundation.

Save Mount Diablo
We Can't Afford To Wait
The Wild Lands Next Door
Save Mount Diablo From What?
Acquisition is the first step. Stewardship is forever.
Diablo's Majestic Open Spaces
Forever Wild
Join the Campaign for Diablo's Wild Lands

Help Us Reach Our
$50,000 Goal!

Give Today

Make a Special Spring Donation

Gifts will be matched dollar-for-dollar!

Every day, with your support, we fight to keep the landscapes on and around Mount Diablo undeveloped. And when our efforts are successful, you don’t see change. Your views of rolling hills, magnificent rock outcroppings, recreational trails and incredible wildlife stay the same, instead of being replaced by concrete and traffic.

But with new threats popping up almost daily, now is not the time to be complacent. As a friend of Save Mount Diablo, you know that—and another friend of the mountain knows that.

That’s why, thanks to the William H. Donner Foundation, your donation today will be generously matched—dollar for dollar—doubling your impact in support of our daily effort to keep fighting unnecessary development of open spaces.

Looking to make a membership donation? Click here!

We are on a time-sensitive land conservation mission.

Save Mount Diablo is working to preserve, defend, and restore the remaining 70,000 acres on Mount Diablo and its foothills for wildlife and people to enjoy.

Our Mission

Our Land Conservation Work


We protect natural lands through acquisition, cooperative efforts with parks, developers and landowners and conservation easements.

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We defend Mount Diablo and its foothills from threats of development through land use planning and advocacy.

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We restore habitat prior to transfer to a public agency for permanent preservation and public use.

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We help people enjoy Diablo’s parks through events, educational and recreational opportunities.

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Many Acres of Wild Lands Have Been Saved


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 and Contra Costa County, the East Bay Regional Parks 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 110,000 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

More Wild Land is at Risk.

77,000 acres of natural lands are still threatened by development.

With 2 million more people predicted to move into the Bay Area by 2045 and the current red-hot real estate market, our window for saving this land is closing fast. Once our precious green and gold mosaic is lost, it will be lost forever.

What’s At Stake?

Land Use Campaigns

These Land Use Planning Issues Need Your Attention!

More Issues

Recent News, Announcements, and Field Notes

Read the Latest on Save Mount Diablo’s Blog

Read our Blog


Guided Hikes, Restoration Workdays & Upcoming Events

Diablo Restoration Team Workday – Marsh Creek 4

Saturday June 2nd  9:00 am

Diablo Restoration Team Workday – Marsh Creek 4  Enjoy the beauty of Mt. Diablo’s foothills as we help native bunchgrasses, shrubs and woody plantings establish in the Marsh Creek riparian corridor. Bring a lunch and picnic in the gazebo after a satisfying morning of supporting Save Mount Diablo in its mission to preserve, protect, and …

Discover Diablo – Mangini Ranch Evening Property Tour

Saturday June 9th  7:00 pm

What’s cooler than an exclusive hike on a property that you helped protect? Doing it at night! Beat the summer heat and find out what wakes up once the sun goes down on our Mangini Ranch property. Listen for owl calls and keep an eye out for toads, bats, wolf spiders, scorpions, and other critters …

Diablo Restoration Team Workday – Ang

Tuesday June 19th  9:00 am

Enjoy a morning alongside large, aged oak trees and rolling hills as we cultivate our newest habitat restoration site at the Ang property. Here, we have planted oaks, buckeyes and willows, in hopes of improving tree canopy coverage and riparian habitat.

View Calendar

How You Can Help

Join the Campaign to Save Diablo’s Wild Lands

Help Us Preserve Mount Diablo and its Foothills in Perpetuity

In 2012, Save Mount Diablo launched FOREVER WILD, our first capital campaign, with a target of raising $15 million by 2019.

With your support, we will permanently conserve, defend, and steward key vulnerable portions of the Diablo wild lands, transfer these properties to the public trust where appropriate, and stand ready to protect the threatened land that remains.

 Thanks to the remarkable generosity of our campaign donors, as of 2017, we have raised $10.4 million towards our goal… but there is still a long road ahead of us. Save Mount Diablo needs your support today more than ever.

 Now is the time to preserve the natural heritage of Mount Diablo for wildlife and for current and future generations.

Forever Wild

My dream is that the whole of Mount Diablo, including its foothills, will remain open space… that the visual and natural integrity will be sustained.

Dr. Mary L. Bowerman
Co-Founder, Save Mount Diablo