Chino Hills

The Chino Hills are a mountain range on the border of Orange, Los Angeles, and San Bernardino counties, California, with a small portion in Riverside County. The Chino Hills State Park preserves open space and habitat in them.GeographyThe Chino Hills are separated from the Santa Ana Mountains to the south by the Santa Ana River (Santa Ana Canyon). On the northwest, Brea Canyon separates the Chino Hills from the Puente Hills. To the north of the Puente Hills and San Jose Creek lie the San Jose Hills. The only paved road crossing the Chino Hills is Carbon Canyon Road (State Route 142).FloraThe Chino Hills are in the California chaparral and woodlands ecoregion of the California Floristic Province. The California native plants here are in the chaparral and oak woodland plant communities, with remnant stands of native grasses of California.