Wilderness Landscape & Natural Heritage
Dutton Island Preserve is situated in Suisun Marsh, near the confluence of the Sacramento and San Joaquin Rivers in California’s San Francisco Bay Delta region. The preserve comprises tidal wetlands, open water sloughs, and seasonal pond habitats that support an impressive diversity of plant and animal species, especially waterfowl and other migratory birds. Historically, the island was part of the expansive tidal marshland that has since been reduced by development and agricultural conversion. Managed for restoration and conservation, Dutton Island plays a key role in protecting wetland ecosystems that help improve water quality, reduce flooding, and provide essential habitat for fish, amphibians, and birds such as the endangered California Ridgway’s Rail and salt marsh harvest mouse. Visitors to Dutton Island Preserve typically experience the area by boat or kayak, exploring the quiet waterways and observing native flora and fauna. The preserve is accessed through neighboring public islands and waterways and is primarily focused on habitat preservation, so public access is limited and regulated to minimize disturbance. The marsh’s scenic views and abundant wildlife attract birdwatchers and eco-tourists interested in the natural Delta environment. Although there are no developed trails or campgrounds within the preserve itself, the adjacent regions offer additional recreational access and educational opportunities about this fragile wetland ecosystem.
