Briones Regional Park is a 6,117-acre (24.75 km2) regional park in the East Bay Regional Park District (EBRPD) system, located in the Briones Hills of central Contra Costa County of the San Francisco Bay Area in California. The park is located in rolling hills of the East Bay region, near Lafayette, Walnut Creek, and Pleasant Hill. The western end of Briones Regional Park is adjacent to the Briones Reservoir, operated by EBMUD across Bear Creek Road. Briones Peak is the highest point in the park with an elevation of 1483 ft (452 m), and offers panoramic views of Mount Diablo and the Diablo Valley to the east, the Sacramento River to the north, and the Berkeley Hills and Mt. Tamalpais to the west. The park is also home to many animals and birds, such as turkey vultures, black-tailed deer, cougars, coyotes, squirrels, and redtailed hawks. Cattle, sheep, and goat ranchers still use portions of the park for grazing purposes and hold a one hundred-year lease that is effective until the 2060s.