Rancho El Sobrante

The Briones Valley is a major geological feature of Contra Costa County, California and runs between Mount Diablo and the county seat of Martinez. Also, it is the seat of many riparian watersheds, especially of Alhambra Creek.

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. It is owned and operated by the East Bay Municipal Utility District (EBMUD).

Lake El Toyonal (Spanish: Lago El Toyonal) is a small lake in Contra Costa County, California in an unincorporated area of parklands between Orinda and Berkeley.

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.

Tilden Regional Park, also known as Tilden Park or Tilden, [tɪldɨn], is a 2,079-acre (841 ha) regional park in the East Bay, part of the San Francisco Bay Area in California. It is between the Berkeley Hills and San Pablo Ridge. Its main entrance is near Kensington, Berkeley, and Richmond. The park is contiguous with Wildcat Canyon Regional Park. The park is managed by the East Bay Regional Park District, created from the first land the District purchased in 1936. Tilden Regional Park was named in honor of Charles Lee Tilden, a Bay Area attorney and businessman who served on the first Board of Directors of the East Bay Regional Park District.

The Black Hills are a mountain range in Contra Costa County, California.

The Regional Parks Botanic Garden is a 10-acre (4 hectare) botanical garden located in Tilden Regional Park in the Berkeley Hills, east of Berkeley, California, in the United States. It showcases California native plants, and is open to the public in daylight hours every day of the year except New Year's Day, Thanksgiving, and Christmas. The Garden was founded on January 1, 1940.

The Tilden Park Merry-Go-Round is a menagerie carousel located in Tilden Regional Park near Berkeley and Oakland, in unincorporated Contra Costa County. It was built by the Herschell-Spillman Company of Tonawanda, New York in 1911, and it is one of the few antique carousels left in the United States. Before arriving at Tilden in 1948, the carousel had seen service at amusement parks in San Bernardino, Ocean Beach, and Los Angeles. It is listed on the National Register of Historic Places. The Merry-Go-Round is owned by the East Bay Regional Park District.

Lake Anza is a recreational swimming reservoir, located within the Tilden Regional Park, in the Berkeley Hills above Berkeley, California.

San Pablo Ridge is a small mountain range in western Contra Costa County from Pinole to Orinda between Wildcat Canyon and San Pablo Canyon. The western flank is part of the Wildcat Creek watershed and the eastern flank is part of the San Pablo Creek watershed. To the west are the Berkeley Hills, and to the east, the Sobrante Ridge. The highest point on the San Pablo Ridge is Vollmer Peak (elevation 1,905 feet/581m), formerly called "Bald Peak", located near the point where it meets the Berkeley Hills at the head of Wildcat Canyon. San Pablo Ridge is largely undeveloped, forming part of county lands and open space, with a few privately held ranches remaining.

Jewel Lake is a former reservoir and artificial lake along Wildcat Creek, a small stream in Northern California in Tilden Regional Park. It is located in the Wildcat Canyon between the Berkeley Hills and Sobrante Ridge Hills in an unincorporated area closest to Richmond and Kensington, California geographically and Berkeley accessibly. A wooden raised walkway built in the 1970s runs over marshland to the south of the lake. The dam and abandoned flood control machinery are visible at the north end of the lake.

The Tilden Park Golf Course is a public golf course in the San Francisco Bay Area.