The Suisun Marsh is the largest tidal marsh on the West Coast. It is vital to the health of the San Francisco Bay and provides critical nursery grounds and plentiful food for fish, ducks, and many other species. Much of the Suisun Marsh is managed as seasonal wetlands for waterfowl.
Rush Ranch is rare because of the 1,000 acres of natural tidal marsh on the property. The tides ebb and flow with brackish water, and the marsh supports many threatened and endangered species that have evolved to live in the transitional habitat between water and land.