| Cull Canyon Regional Recreation Area | |
|---|---|
 Lifeguards training in the lagoon | |
 | |
| Type | Recreational area |
| Location | Alameda County, California |
| Nearest city | Hayward, California |
| Area | 360 acres (1.5 km2) |
| Operated by | East Bay Regional Park District |
| Open | Easter until Labor Day (swim area) |
| Status | Open |
Cull Canyon Regional Recreation Area (CCRRA) is a regional park located in Castro Valley, Alameda County, California. It is part of the East Bay Regional Park District (EBRPD) system. [1]
CCRRA includes a 1.5 acres (0.0061 km2) swim lagoon and formerly included a fishing lake that resulted from damming Cull Creek. [lower-alpha 1] The swim area has a bathhouse, lawns, sandy beaches, and much shallow water for kids. [2] EBRPD reports that "The [recreation area's] lagoon won the 1966 Governor's Design Award for Exceptional Distinction for Recreational Development in the category of landscape." [1] [3] The recreation area is open for swimming seasonally. The swim area is fenced and has a lifeguard on duty when the area is open. No dogs are allowed inside this area.
In 2014, the San Jose Mercury-News, a local newspaper, reported that the Cull Creek Reservoir Dam would likely be drained soon because it had been judged as seismically unsafe. This hazard was caused by tons of sediment that had deposited since the dam was constructed in 1963. [4] [lower-alpha 2]
By 2014, the water layer was estimated to be only 6 feet (1.8 m) deep. [4] The Alameda County Flood Control Manager, Hank Ackerman, said that the reservoir receives 12,000 to 20,000 cubic yards of silt and debris every year, which is trapped behind the dam. He added that the problem had reached a point where it caused a massive fish kill in August 2013, and that EBRPD had ceased to restock the reservoir with fish. [4]
A temporary solution to the seismic concern was obtained in 2006 when engineers penetrated the concrete spillway with 12-inch pipe that relieved pressure on the dam by lowering the water level in the lake. Ackerman noted that dredging the lake to remove the sediment had been estimated to cost $16 million and require 28,000 round trips with double bottom dump semitrailers to remove the estimated 450,000 cubic yards of sediment. The dam would need to be reinforced after the silt is removed. [4]
Almeda County engineers have proposed to notch the reservoir's weir. This would let water flow downstream,leaving the accumulated sediment behind. Ackerman said that cost would be less than $1 million, and that the seismic threat would be eliminated because the (California) Division of Safety of Dams would no longer consider it a dam if it didn't hold back water.” [4]
The Chabot-to-Garin Regional Trail (part of the Bay Area Ridge Trail) runs along the east side of the Cull Canyon reservoir. The trail then leads north through property owned by the East Bay Municipal Utility District (EBMUD) for 6 miles (9.7 km) to EBMUD's Chabot staging area on Redwood Road. [lower-alpha 3] The Willow View Trail leads from this point into Anthony Chabot Regional Park. [2]
The East Bay Regional Park District (EBRPD) is a special district operating in Alameda County and Contra Costa County, California, within the East Bay area of the San Francisco Bay Area. It maintains and operates a system of regional parks which is the largest urban regional park district in the United States. The administrative office is located in Oakland.
East Bay Municipal Utility District (EBMUD), colloquially referred to as "East Bay Mud", is a public utility district which provides water and sewage treatment services for an area of approximately 331 square miles (860 km2) in the eastern side of the San Francisco Bay. As of 2018, EBMUD provides drinking water for approximately 1.4 million people in portions of Alameda County and Contra Costa County in California, including the cities of Richmond, El Cerrito, Hercules, San Pablo, Pinole, Lafayette, Moraga, Orinda, Danville, Oakland, Piedmont, Emeryville, Berkeley, Albany, Alameda, San Leandro, neighboring unincorporated regions, and portions of cities such as Hayward and San Ramon. Sewage treatment services are provided for 685,000 people in an 88-square-mile area (as of 2018). EBMUD currently has an average annual growth rate of 0.8% and is projected to serve 1.6 million people by 2030. Headquartered in Oakland, EBMUD owns and maintains 2 water storage reservoirs on the Mokelumne River, 5 terminal reservoirs, 91 miles (146 km) of water transmission aqueducts, 4,100 miles (6,600 km) of water mains, 6 water treatment plants (WTPs), 29 miles (47 km) of wastewater interceptor sewer lines and a regional wastewater treatment facility (WWTF) rated at a maximum treatment capacity of 320 MGD.
Lake Temescal is a small reservoir in the Oakland hills, in northeastern Oakland, California. It is the centerpiece of Temescal Regional Recreation Area, also known as Temescal Regional Park. It is a part of the East Bay Regional Park District.
Temescal Regional Recreation Area (TRRA), formerly Lake Temescal Regional Park, is a regional park in the Berkeley Hills, in northeastern Oakland, California. The TRRA encompasses 48 acres (19 ha), abutting SR 24, SR13, and the interchange connecting the two highways, southwest of the Caldecott Tunnel.The park is part of the East Bay Regional Park District (EBRPD).
Alameda Creek is a large perennial stream in the San Francisco Bay Area. The creek runs for 45 miles (72 km) from a lake northeast of Packard Ridge to the eastern shore of San Francisco Bay by way of Niles Canyon and a flood control channel. Along its course, Alameda Creek provides wildlife habitat, water supply, a conduit for flood waters, opportunities for recreation, and a host of aesthetic and environmental values. The creek and three major reservoirs in the watershed are used as water supply by the San Francisco Public Utilities Commission, Alameda County Water District and Zone 7 Water Agency. Within the watershed can be found some of the highest peaks and tallest waterfall in the East Bay, over a dozen regional parks, and notable natural landmarks such as the cascades at Little Yosemite and the wildflower-strewn grasslands and oak savannahs of the Sunol Regional Wilderness. After an absence of half a century, ocean-run steelhead trout are able to return to Alameda Creek to mingle with remnant rainbow trout populations. Completion of a series of dam removal and fish passage projects, along with improved stream flows for cold-water fish and planned habitat restoration, enable steelhead trout and Chinook salmon to access up to 20 miles (32 km) of spawning and rearing habitat in Alameda Creek and its tributaries. The first juvenile trout migrating downstream from the upper watershed through lower Alameda Creek toward San Francisco Bay was detected and documented in April 2023.
Kennedy Grove Regional Recreation Area (KGRRA), also known simply as Kennedy Grove, is located in Richmond, Contra Costa County, California at the base of San Pablo Dam. Created in 1967, it contains a three-mile hiking trail with an elevation of 760 feet (230 m). The Grove features many large eucalyptus trees, picnic areas, volleyball nets, playgrounds, and horseshoe pits. Bird watching is popular here because hawks are almost always spotted. Some hikers have reported seeing golden and bald eagles around the reservoir. There is no camping allowed. Parking is $5 with an extra $2 fee for a dog. Dogs have to be on the leash around the lawn but they are allowed off the leash in remote parts of the park. The park is open from 8 a.m. to dusk.
Wildcat Canyon Regional Park is a 2,789-acre (1,129 ha) East Bay Regional Parks District park bordering the city of Richmond in Contra Costa County in the San Francisco Bay Area of California. It includes a portion of Wildcat Canyon as well as a portion of the adjoining San Pablo Ridge, and is directly connected to the more heavily used Tilden Regional Park.
Lake Chabot is a man-made lake covering 317 acres (1.3 km2) in Alameda County, California, United States. Part of the lake lies within Oakland city limits, but most of it lies in unincorporated Castro Valley, just east of San Leandro. It was formed by the damming of San Leandro Creek. The lake was completed in 1875 to serve as a primary source of water for the East Bay.
San Leandro Creek is a 21.7-mile-long (34.9 km) year-round natural stream in the hills above Oakland in Alameda County and Contra Costa County of the East Bay in northern California.
The San Pablo Reservoir is an open cut terminal water storage reservoir owned and operated by the East Bay Municipal Utility District (EBMUD). It is located in the valley of San Pablo Creek, north of Orinda, California, United States, and south of El Sobrante and Richmond, east of the Berkeley Hills between San Pablo Ridge and Sobrante Ridge.
Briones Reservoir is an open cut terminal water storage reservoir located in western Contra Costa County, in the East Bay region of the San Francisco Bay Area, California.
Del Valle Regional Park is a part of the East Bay Regional Park District (EBRPD) in an unincorporated region of Alameda County, California, 10 miles (16 km) south of the city of Livermore. The park covers 4,316 acres.
Lake Chabot Regional Park is a regional park located in the southern Berkeley Hills in Alameda County, California. It is part of the East Bay Regional Parks system.
Las Trampas Regional Wilderness is a 5,342-acre (21.62 km2) regional park located in Alameda and Contra Costa counties in Northern California. The nearest city is Danville, California. Las Trampas is Spanish for the traps, or the snares. The park belongs to the East Bay Regional Park District (EBRPD).
The Lafayette Reservoir is an open-cut human-made terminal water storage reservoir owned and operated by the East Bay Municipal Utility District (EBMUD). Completed in 1933, it was intended solely as a standby water supply for EBMUD customers. EBMUD opened the reservoir for public recreation in 1966. It is located off of California State Route 24 and a mile from the Lafayette BART station, in Contra Costa County, California, United States. This all-year, day-use area is ideal for hiking, jogging, fishing, boating and picnicking. The reservoir is on the Lafayette-Orinda border. The reservoir is on a 925-acre (3.74 km2) site and holds 1.4 billion US gallons (5,300,000 m3)
The Mokelumne Aqueduct is a 95-mile (153 km) water conveyance system in central California, United States. The aqueduct is supplied by the Mokelumne River and provides water to 35 municipalities in the East Bay in the San Francisco Bay Area. The aqueduct and the associated dams, pipelines, treatment plants and hydroelectric system are owned and operated by the East Bay Municipal Utility District (EBMUD) and provide over 90 percent of the water used by the agency.
Santa Anita Dam, also known as Big Santa Anita Dam, is a concrete thin arch dam on Santa Anita Creek in the San Gabriel Mountains of Los Angeles County, California. Owned by the Los Angeles County Flood Control District, the dam serves for flood control, water conservation and debris control. The dam is 225 feet (69 m) high and 612 feet (187 m) long, holding 858 acre-feet (1,058,000 m3) of water with a maximum capacity of 1,028 acre⋅ft (1,268,000 m3). The catchment area for the dam is 10.8 square miles (28 km2). The dam was built between 1923 and 1927. The dam has three valves that control releases of stormwater.
Upper San Leandro Reservoir is an artificial lake in Alameda County and Contra Costa County, California which provides water for the East Bay Municipal Utility District (EBMUD). It is impounded by the earth-filled San Leandro Dam on San Leandro Creek, located at the southeast end of the lake.
Five Canyons Open Space (FCOS) is located in Castro Valley, in Alameda County, California. Five Canyons is a multi-agency collaboration between East Bay Regional Parks District (EBRPD), Alameda County Public Works, Hayward Area Recreation and Parks District (HARD), and several homeowners associations. EBRPD is the lead agency for this open space. FCOS opened in 1998, consists of 300 acres (1.2 km2) and 5 miles (8.0 km) of trails and has almost no amenities. The main visitors are hikers, bicyclists, equestrians and dog walkers. Restrooms and drinking water are available at HARD's nearby Five Canyons Park.