Save Mount Diablo holds a variable number of properties as we work to place them with a park agency or under the permanent protection of a conservation easement.

While we own these properties, we steward them to improve conditions and protect their most sensitive areas. Our amazing stewardship staff and volunteers usually begin by cleaning up properties, removing trash or old ranching materials, sometimes even demolishing vacant houses. We encourage research on our properties, offer guided hikes, conduct conservation grazing where appropriate, implement habitat restoration projects, and work with neighbors to care for roads, fences, and gates.

Learn more about how Save Mount Diablo preserves, defends, and restores land through Acquisition, Land Use Planning and Advocacy, and Stewardship to fulfill our time-sensitive land conservation mission.


Preserved Land Acquisitions and Property Holdings

Marsh Creek 4

Protected by SMD, Owned by Save Mount Diablo

2.65 acres
3240 Aspara Drive
Protected in 2008

The Corner Piece

Protected by SMD, Transferred to Mount Diablo State Park

117 acres
The corner of Morgan Territory and Marsh Creek Roads
Protected in 1976

Thomas Home Ranch

Protected by SMD, Transferred to East Bay Regional Park District

134.5 acres
Kirker Creek, Pittsburg Area
Protected in 2011

Smith Canyon

Protected by SMD, Owned by Save Mount Diablo

28.73 acres
Smith Canyon
Protected in 2020

Marsh Creek 1

Protected by SMD, Owned by Save Mount Diablo

8.92 acres
Upper Marsh Creek
Protected in 2007

Anderson Ranch

Protected by SMD, Owned by Save Mount Diablo

95 acres
4135 Morgan Territory Road
Protected in 2017

Rideau

Protected by SMD, Conservation Easement

5 acres
1650 Curry Canyon Road
Protected in 2016

North Peak Ranch

Protected by SMD, Privately Owned

88.5 acres
East of Clayton
Protected in 2015

Marsh Creek 2

Protected by SMD, Conservation Easement, Privately Owned

17 acres
12271 Marsh Creek Road
Protected in 2008

Wright Canyon

Protected by SMD, Owned by Save Mount Diablo

76 acres
Morgan Territory area, east of Mount Diablo State Park
Protected in 2001

Joseph Galvin Ranch

Protected by SMD, Transferred to East Bay Regional Park District

62 acres
Morgan Territory area, east of Mount Diablo State Park
Protected in 2003

Highland Springs

Protected by SMD, Owned by Save Mount Diablo

105 acres
Highland Ridge
Protected in 2013

Lot 25

Protected by SMD, Owned by Save Mount Diablo

5 acres
Marsh Creek- Morgan Territory area
Protected in 2012

Marsh Creek 7

Protected by SMD, Owned by Save Mount Diablo

7.6 acres
Marsh Creek- Morgan Territory Area
Protected in 2012

Thomas Kirker Creek

Protected by SMD, Owned by Save Mount Diablo

10.5 acres
Kirker Creek, Pittsburg Area
Protected in 2011

Marsh Creek 5

Protected by SMD, Owned by Save Mount Diablo

7.4 acres
Marsh Creek- Morgan Territory area
Protected in 2012

Curry Canyon Ranch

Protected by SMD, Owned by Save Mount Diablo

1080.53 acres
Curry Canyon
Protected in 2013

Hanson Hills

Protected by SMD, Transferred to East Bay Regional Park District

76.46 acres
Marsh Creek
Protected in 2014

Marsh Creek 6

Protected by SMD, Owned by Save Mount Diablo

6 acres
Marsh Creek- Morgan Territory Area
Protected in 2012

Big Bend (Marsh Creek 8)

Protected by SMD, Owned by Save Mount Diablo

51 acres
Marsh Creek
Protected in 2014

Moss Rock

Protected by SMD, Transferred to East Bay Regional Park District

20 acres
Marsh Creek- Morgan Territory area
Protected in 2010

Oak Hill Lane

Protected by SMD, Owned by Save Mount Diablo

40 acres
Morgan Territory area, east of Mount Diablo State Park
Protected in 2010

Dry Creek

Protected by SMD, Owned by Save Mount Diablo

5 acres
Deer Valley area near Brentwood
Protected in 2010

Viera–North Peak

Protected by SMD, Transferred to East Contra Costa Habitat Conservancy

165 acres
Morgan Territory area, adjacent to Mount Diablo State Park
Protected in 2009

Marsh Creek Properties

Protected by SMD

64 acres
Marsh Creek
Protected in 2008

Irish Canyon

Protected by SMD, Transferred to East Bay Regional Park District

320 acres
Marsh Creek-Morgan Territory area near Clayton
Protected in 2010

Mangini Ranch

Protected by SMD, Owned by Save Mount Diablo

208 acres
Between Lime Ridge Open Space and Mount Zion
Protected in 2007

Young Canyon

Protected by SMD, Owned by Save Mount Diablo

18 acres
North side of Mount Diablo, halfway up North Peak
Protected in 2006

Save Mount Diablo’s properties are closed to the public except by guided tour. Please see our Hike Calendar for upcoming dates and opportunities.

Save Mount Diablo’s featured acquisitions include Smith Canyon, Anderson Ranch, Hanson Hills, Big Bend, Curry Canyon Ranch, Highland Springs, Lot 25, Marsh Creek properties (1, 2, 4, 5, 6, 7, and 8), Thomas Kirker Creek, Thomas Home Ranch, Moss Rock, Oak Hill, Dry Creek, Viera-North Peak, Irish Canyon, Mangini Ranch, Young Property, Galvin Ranch, and Wright Canyon.

Join us to save the remaining natural lands of Mount Diablo!

Make a Donation