Friends of Santa Cruz State Parks
Website: http://thatsmypark.org
Affiliated State Parks: Lighthouse Field State Beach, Manresa State Beach, Natural Bridges State Beach, New Brighton State Beach, Rancho San Andrés Castro Adobe, Santa Cruz Mission State Historic Park, Seacliff State Beach, Sunset State Beach, The Forest of Nisene Marks State Park, Twin Lakes State Beach, Wilder Ranch State Park
Mountain Parks Foundation
Website: http://www.mountainparks.org
Affiliated State Parks: Big Basin Redwoods State Park, Henry Cowell Redwoods State Park
Resource Conservation District of Santa Cruz County
Website: http://www.rcdsantacruz.org
Affiliated State Parks: Henry Cowell Redwoods State Park, Manresa State Beach, Seacliff State Beach
Save Our Shores
Website: http://saveourshores.org
Affiliated State Parks: Asilomar State Beach, Carmel River State Beach, Fort Ord Dunes State Park, Garrapata State Park, Lighthouse Field State Beach, Manresa State Beach, Marina State Beach, Monterey State Beach, Monterey State Historic Park, Moss Landing State Beach, Natural Bridges State Beach, New Brighton State Beach, Salinas River State Beach, Seacliff State Beach, Sunset State Beach, Twin Lakes State Beach, Wilder Ran
Waddell Creek Association
Website: http://ranchodeloso.org/
Affiliated State Parks: Big Basin Redwoods State Park