1200 Frederickson Lane
Antioch, CA 94509
Toll Free: 888-EBPARKS (888-327-2757), option 3, extension 4518
View Trail Map
Download PDF Map
Transit & Trails
Wayside Panels - Anza
Click HERE for upcoming events
$5 per vehicle; $4 per trailered vehicle. Buses: $25/per bus.
$2 per dog. Guide/service dogs free
Grazing in the Parks
Beach Access Fee
See the Swim Facilities page
Boat Launch Fee
See the Boating/Sailing page
No reservable campgrounds
1-888-EBPARKS or 1-888-327-2757, press option 2, then 1
1-888-EBPARKS or 1-888-327-2757
There are cattle grazing at the East Side of the park.
Contra Loma Regional Park
Watercraft Owners - Please Help Keep Invasive Mussels Out of Our Water.
> Read more about mandatory watercraft inspections and the Invasive Mussel...
- About The Park
- Park Hours
- Park Activities
- Park Accessibility
- To Reach The Park
- Trail Map
- Park Map
- Interpretive Panels
Please help keep Invasive Mussels out of our waters. Read more about the Boat Inspections and the Invasive Mussel.
Contra Loma's 780 acres include an 80-acre reservoir for year-round fishing and a lifeguarded swim lagoon for summertime swimming. Enjoy these attractions along with year-round hiking, biking, and nature study at this Contra Costa County oasis. Alcohol is not permitted.
Wildflower Photo Guide
> Contra Loma (1.6 Mb, 11 x 8.5, 14 pages )
|Submit Your Photos to the EBRPD Photo Pool|
|Park Gates||January||7:00am - 5:30pm|
|February||7:00am - 6:00pm|
|March||7:00am - 7:00pm|
|April||6:00am - 8:00pm|
|May to August||6:00am - 8:30pm|
|September||6:00am - 8:00pm|
|October||7:00am - 7:00pm|
|November||7:00am - 6:00pm|
|December||7:00am - 5:30pm|
|Swim Lagoon Public Swim Hours:
May vary due to weather, water quality, staffing availability and visitation.
Food concession hours are same as swim hours.
& Holidays from
Mid-May - May 31
|11:00am - 6:00pm|
|Open Daily from
June 1 - Aug 21
11:00am - 6:00pm
& Holidays from
Aug 22 - Sept 20
11:00am - 6:00pm
The lake's swim lagoon has a sandy beach with restrooms and a concession stand. Shady picnic areas on a green lawn are accessible to the disabled. Alcohol is not permitted anywhere in the park. Swimming is permitted in the lagoon only, in the summer when lifeguards are on duty. There is a beach access fee. For fee information and lifeguard schedule, visit the Swim Facilities page. Swim lessons and the Jr. Guard program are held at the lagoon in the summertime. For information, see Aquatic Programs at the Park District's http://www.EBParks.org/Register program registration page. Visitors to Contra Loma may launch their own boats. For boat launch information, see our Boating and Sailing page. Persons using float tubes must have with them life jackets.
The reservoir contains catfish, black and striped bass, bluegill, trout, and red-eared sunfish for fishing. A Daily Fishing Access Permit is required and can be purchased at the park entry kiosk. Other information on fishing can be found in the Fishing section of this site.
From Contra Loma there are trail connections to Black Diamond Mines Regional Preserve.
Note: The Contra Costa Water District, which owns the reservoir, requires that all windsurfers shower a minimum of 2 minutes prior to entering the reservoir and wear at least a short wetsuit. Showers are located outside the restrooms and next to the beach used by windsurfers. Persons using float tubes must wear waders or other wetsuit material to eliminate body contact with the water in the reservoir. People using sea kayaks that self bail must shower prior to entering the reservoir and wear at least a short wet suit. Other dry-type kayaks are permissible with the only restriction being no rollovers or other activities that cause body contact with the water.
Contra Loma has wheelchair accessible restrooms, drinking fountains, and parking. The south fishing dock is wheelchair accessible and may be reached by paved trail. The shady picnic areas near the lake's swim lagoon are wheelchair accessible. The swim lagoon has an accessible pool lift.
A beach wheelchair, intended to provide a means for wheelchair users to travel around the swimming lagoon, is available for free on a first-come, first-served basis. It requires an assistant to push and may enter the water. For information about use of the beach wheelchair or pool lift, please contact the park office at 888-327-2757, option 3, ext. 4518.
Trail Accessibility Report
To reach Contra Loma from Highway 4 in Antioch, exit on Lone Tree Way, go right on Golf Course Road and right on Frederickson Lane to the park.
Transit & Trails: Contra Loma Regional Park (transit, biking, and walking directions)
Click the map image below to see an enlarged version.
When the 'Actual Size' map is viewable, you can 'Click-Hold and Drag' the mouse button (left on a PC) to reposition the map, as desired.
'Single-Click' on the 'Enlarged' or 'Actual Size' map to return to the park page.
Enhancing Butterfly Habitat (1.6 MB, PDF)