Vasco Caves Regional Preserve exists because of the combined efforts of the East Bay Regional Park District and the Contra Costa Water District. The property was jointly acquired by both agencies and is operated by the Park District in agreement with CCWD. All access is by advance reservation guided tours only. The Preserve is not open to general public access in order to protect the Reserve's unique resources.
Brentwood is one of the fastest-growing cities in the nine-county Bay Area and offers a strategic location that connects: the SF Bay Area, Central Valley, Tri-Valley, and Sacramento Delta.