Description - When the swim area of Cull Canyon was constructed, a secondary dam was built to provide an inner swimming area complete with sandy beach. Never previously tried, this innovation made the swim area water level independent of the reservoir's, unaffected by summer draw-downs.
Copyright: - East Bay Regional Park District
Enjoying the water at Cull Canyon
The lagoon won the 1966 Governor's Design Award for Exceptional Distinction for Recreational Development in the category of landscape.
- The swim complex includes a bathhouse, snack bar, and the 1.5-acre swim lagoon. It is ideal for families with small children who will enjoy splashing in the shallows and playing on the white sandy beach. Near the swim complex are four large reservable picnic areas. The large area inside the swim complex is also available to rent for parties, receptions, weddings, etc. See Contact Information for phone numbers.
The reservoir itself contains bass, catfish, and sunfish. The 360-acre park is a fine place to cool off on a hot summer day, fish, or just relax in the outdoors any time of year.
Cull Canyon also is on the Chabot-to-Garin Regional Trail, which is being developed between the two parks. The trail runs along the east side of Cull Canyon Reservoir, then heads north for six miles through East Bay Municipal Utility District property to EBMUD's Chabot Staging Area on Redwood Road (EBMUD hiking permit required). From here the Willow View Trail leads into Anthony Chabot Regional Park.
The swim complex is open from Easter till after Labor day; lifeguard protection. No parking or dog fee apply; dogs prohibited from inside fenced swim area. Swim fee to enter swim area.
Recreation - In addition to attracting swimmers, Cull Canyon attracts anglers, hikers, horseback riders, bicyclists, and picnickers.
Climate - Climate in the San Francisco Bay area varies greatly with elevation and the amount of coastal influence. Areas with more coastal influence experience moderate temperatures year round with fog likely from June through mid-August. Plan your coastal visit in the late summer or fall to ensure the best conditions for viewing the scenery. Also, occasional clear days between winter and spring storms are incomparable. Areas further inland experience greater temperature extremes, with relatively cooler winters and hot summers. Inland areas often receive frost on winter nights. As throughout most of California most of the precipitation comes in the winter months, with April through October normally very dry.
This popular Castro Valley swimming spot is only a short drive north from Interstate 580 on Cull Canyon Road in Castro Valley.