Martin Griffin Preserve 1,000-acre preserve in West Marin

Bouverie Preserve 535-acre preserve in Sonoma County's Valley of the Moon

Cypress Grove Research Center 500-acre preserve on Tomales Bay in Marshall

Mayacamas Mountains Sanctuary  1,600-acre preserve in the Mayacamas Mountains of Sonoma County

Modini Ingalls Ecological Preserve  1,700-acre preserve adjacent to the Mayacamas Mountains Sanctuary