County by county, here are the Bay Area's 25 waterfalls:
-- Alameda County: Murietta Falls in the Ohlone Wilderness; Little Yosemite Falls in Sunol Regional Wilderness.
-- Contra Costa County: Donner Falls in Mount Diablo State Park; Abriego Falls in Briones Regional Park.
-- Marin County: Alamere Falls in Point Reyes National Seashore; Stairstep Falls in Samuel P. Taylor State Park; Cataract Falls and Carson Falls in Marin watershed lands; Dawn Falls, Cascade Falls and Loma Alta Falls in Marin County Parks/Open Space.
-- San Mateo County: Brooks Falls in San Pedro Valley County Park; Tiptoe Falls at Portola Redwoods State Park.
-- Santa Clara County: Black Rock Falls, Basin Falls, Upper Falls, Granulja Falls, Triple Falls in Uvas Canyon County Park.
-- Sonoma County: Canyon Creek Falls in Sugarloaf Ridge State Park.
-- Santa Cruz County: Castle Falls in Castle Rock State Park; Berry Creek Falls, Silver Falls, Golden Falls, Sempervirens Falls in Big Basin Redwoods State Park; Maple Falls in Forest of Niscene Marks State Park.