Stony Brook-Millstone Watershed Preserve is New Jersey’s largest privately owned preserve, offering diverse habitats and over 30 miles of trails for hiking, wildlife viewing, and environmental education.
The Stony Brook-Millstone Watershed Preserve, located in central New Jersey, protects over 2,000 acres of forested land, wetlands, streams, and meadows. This preserve safeguards the water quality of the Stony Brook and Millstone River watersheds, which provide drinking water to thousands of residents. Visitors encounter a variety of ecosystems including hardwood forests, freshwater wetlands, vernal pools, and riparian corridors. Established in 1965 as the state's first watershed protection organization, the preserve emphasizes environmental education through its Nature Center, interactive exhibits, and guided programs. Outdoor enthusiasts can explore more than 30 miles of well-maintained trails that vary in difficulty and pass through scenic woodlands, alongside streams and across bridges. The preserve also hosts seasonal activities including bird watching, fishing, and guided nature walks. Its varied landscape supports abundant native wildlife such as white-tailed deer, foxes, beavers, and many bird species, including migratory waterfowl and songbirds. The preserve's commitment to water quality, natural habitat protection, and community engagement makes it a valued resource for recreation, education, and conservation. Visitors appreciate the quiet, natural atmosphere just minutes from suburban areas, making it a popular day-use destination for families, hikers, and nature photographers.
The Stony Brook Mill and Millstone River confluence scenic area
Diverse freshwater wetlands hosting vernal pools and amphibian breeding grounds
The Watershed Nature Center with interactive environmental exhibits
The preserve’s extensive trail network passing through forests, fields, and streams
A historic water-powered gristmill preserved on the property, showcasing 18th-century milling technology and early American industry.
Seasonal wetlands that provide critical breeding habitat for frogs, salamanders, and other amphibians in spring.
Visitor center featuring educational displays about water conservation, local ecology, and the importance of watershed protection.