Watershed Reserve


View Watershed Reserve in a larger map

Park Overview:

A beautiful nature preserve with several short hikes through protected habitats.

Trail Uses:Hiking, X-C skiing
Dogs:Dogs on leash
Trail Miles:10 miles
Park Acreage:960 acres
Web Map:Stony Brook-Millstone Watershed Association trail map
Park Description:

The goal of the Stony Brook Millstone Watershed Association, founded 60 years ago, is to improve the health and quality of central New Jersey’s water and sustain a network of protected habitats for wildlife and people. Maintaining the Watershed Reserve is a major component of this environmental protection effort. Hikers can explore wetlands, forests, meadows, streams and the four-acre Wargo Pond, which nourish  the diverse community of animals and plants. Some of the oldest trees in central New Jersey are found here, as well as fox, coyote, weasel and flying squirrel.


Trails Overview:

The Reserve’s trail map (use link above) identifies four blazed trails:

  • The “Watershed Trail” (blue blaze, 3.45 miles one way) traverses the length of the park, roughly from south to north -- from Stony Brook to W. Broad Street.
  • The “Meadow-Pond Trail” (red, 2 mile) forms a loop bordering on a restored meadow and then around Wargo Pond.
  • The “Stony Brook Trail” (green, 2 miles round trip), forming the shape of a lollipop, leaves the parking area to parallel Stony Brook for a stretch.
  • The “Farm Trail” (brown, 1.25 miles round trip), which passes by the Honey Branch Organic Farm Stand and farm fields, can form loop hikes when it meets with other trails.

Pathways have a dirt surface with some wooden bridges over boggy areas. Trailheads for all are from the main parking area off Titus Mill Road.  There are no fees to hike in the Reserve.

The largely off-park “Elks Trail” (1.2 miles) is nearer the northern end and accessible from the Watershed Trail.  It is part of the system of trails maintained by the Friends of Hopewell Valley Open Spaces (follow the “Trails” link). Combined with other less formal ones, the Preserve offers 10 miles of trails.

Hunting is not allowed in the Reserve, except that bow hunting is allowed with a special permit.  In addition, the Reserve is closed to hikers on six specific days each year when shotgun hunting is allowed in nearby parks. Signs are posted at trailheads warning hikers to stay off the trails on these days.



The main parking area is located at the Johnson Environmental Center, 31 Titus Mill Road, Pennington, NJ 08534. GPS coordinates: 40.35387,-74.771848.

Use Contact Information below for written driving directions from multiple locations, follow the “About” tab.  There’s another parking lot on Moore’s Mill-Mount Rose Road and on-street parking on W.Broad Street.  See also the Parking Tab above.

Contact Information:Stony Brook-Millstone Watershed Association
Region:Central Jersey