In the 1950's, an earthen berm was constructed across the Sunken Meadow Creek to allow vehicular traffic and to control mosquito populations. This blocked tidal flow from entering the creek, allowing invasive plants such as
Phragmites australis, to thrive and for pollution to build up.In 2008, New York State Parks, along with other organizations such as the New York State Department of Environmental Conservation, the Long Island Sound Study, Save the Sound, and the National Fish and Wildlife Service, began researching the possibility of replacing the berm with a foot-bridge. In 2011, official planning for the project commenced and by October 2012, the bridge design was complete. However, on October 29th, 2012,
Hurricane Sandy brought strong winds, storm surge, and rainfall to the Long Island region, which blew out the berm. This caused tidal flow to be restored for the first time in decades and for invasive species to be pushed out of the marsh and native species to be reintroduced. Construction of the bridge was completed in October 2013, one year after Hurricane Sandy. Numerous restoration projects have taken place since, such as planting projects for smooth cordgrass (
Spartina alterniflora) and erosion control projects. In 2025, the
National Audubon Society received a $1.5 million grant award from the National Wildlife and Fish Service to aid in marsh restoration. This project focuses on removing invasive plants, elevation enhancement, and hydrological repair. Since restoration began, the marsh has become an educational hub, with both the Sunken Meadow Nature Center and the Western Suffolk BOCES Outdoor Learning Lab using the area to teach students about habitat restoration and native wildlife. ==See also==