| Sobrante Ridge Regional Preserve | |
| Map: | San Francisco Bay Area#California#USA |
| Map Label: | Sobrante Ridge Regional Preserve |
| Location: | Richmond, California, Contra Costa County, California |
| Area: | 277acres |
| Created: | 1985 |
| Operator: | East Bay Regional Park District |
Sobrante Ridge Regional Preserve (SRRP) is a regional park in Richmond,[1] Contra Costa County, California and is part of the East Bay Regional Parks (EBRPD) system. The park preserves one of the few habitats of the Alameda manzanita, which is deemed extremely rare, according to EBRPD.[2]
The land on which SRRP lies was once part of the Rancho El Sobrante grant that the government of Mexico gave to Juan Jose Castro. Although the cited source gives 1840 as the date of the grant, several other sources say that the grant was made in 1841.
The site was owned in more recent times by Cutter Laboratories, a Berkeley-based pharmaceutical company. Cutter raised horses and cattle on the property, using blood from the animals to produce vaccines for diphtheria and tetanus. The German pharmaceutical company bought the entire Cutter company in 1974. Part of the Sobrante Ridge property was dedicated to EBRPD by a local construction company in 1980.[2]
The preserve covers 277acres. Flora includes oak/bay woodland, coyote brush scrub, Alameda manzanita and open grassland.[2]