11am to 6pm (water closes at 5:30); see Swim Facility Dates below for current swim season hours of operation.
Parking Lot Hours:
Mar. to Nov.: 8am-10pm,
Dec. to Feb.: 8am-8pm
Park is closed from 10pm-5am unless otherwise posted or permitted.
$4.00 age 16-61
$2.00 age 1-15
$2.00 seniors 62+ or disabled
FREE under 1 year
No Parking Fee
No Dog Fee (No dogs allowed in the swim facility)
Swim Facility Dates at Cull Canyon
Open daily May 31 - August 19
Plan in advance! Pre-register below for weekends and holidays. General information
NOTE: If capacity is reached, access to the swim lagoon closes for the day. No alcohol, glass containers, or portable bbq’s allowed in the swim lagoon area.
This popular Castro Valley swim complex is only a short drive north from Interstate 580 on Cull Canyon Road in Castro Valley.
The lagoon won the 1966 Governor's Design Award for Exceptional Distinction for Recreational Development in the category of landscape.
When the swim area was constructed, a secondary dam was built to provide an inner swimming area complete with a sandy beach. Never previously tried, this innovation made the swim area water level independent of the reservoir's, unaffected by summer draw-downs. The reservoir no longer exists south of the swim area.
Swim Facilities Capacity Notice
Once the swim facility capacity is reached, there will be no new entries allowed for the remainder of the day (or at the discretion of the Park Supervisor), for the safety of the public. Please take this into consideration when planning your visit.
To Reach The Park
NOTE: No alcohol, glass containers, or portable bbq’s allowed in the swim lagoon area.
Picnic site reservations are open District wide. All picnic reservations will be by phone only. Picnics will not be reservable online.
It is strongly recommended to make a picnic reservation for Weekends and Holidays. Any group of 30 or more people must make a reservation, any day of the week.
There are several reservable picnic areas outside the swim complex. For information, call 1-888-EBPARKS or 1-888-327-2757, press option 2.
Cull Canyon is also on the Chabot-to-Garin Regional Trail, which is being developed between the two parks. The trail runs along Cull Canyon Rd, starting at Heyer Avenue, and drops down toward Cull Creek, paralleling Alameda County Flood Control property. It continues through Cull Canyon Regional Recreation area then heads north for six miles into East Bay Municipal Utility District property to EBMUD's Chabot Staging Area on Redwood Road (an EBMUD hiking permit is required for this section). From there the Willow View Trail leads into Anthony Chabot Regional Park.