Point Pinole
- Information about the East Bay Regional Park.
- http://www.ebparks.org/parks/pt_pinole

Contra Costa Canal Regional Trail
- Information and map
- http://www.ebparks.org/parks/trails/contra_costa

Regional Parks Foundation
- Encourages private contributions in support of the East Bay Regional Park District. Field trip suggestions and other educational resources, programs and events calendar, and fundraising goals offered.
- http://www.regparksfdn.org/

Contra Costa Canal Trail
- Guide to the trail within the urban heart of the Diablo Valley. Location and hiking tips provided.
- http://home.pacbell.net/leewaysf/cccanal.html

California Landmarks - Contra Costa County.
- California State Historical Landmarks. Includes the option of clicking on an icon to view photos of the landmark and/or the plaque designating is as a historical landmark.
- http://www.sonic.net/~laird/landmarks/counties/Contra_Costa.html

Save Mount Diablo
- Save Mount Diablo is a San Francisco Bay Area citizens non-profit organization. We are hikers, bikers, equestrians, mountain lovers, bird watchers, and people who just like to look at the mountain. Our mission is to secure through acquisition, protection
- http://www.savemountdiablo.org/

Mount Diablo Interpretive Association
- MDIA is a non-profit volunteer organization which assists the California Department of Parks and Recreation in maintaining and interpreting Mt. Diablo State Park to visitors.
- http://www.mdia.org/home.htm