Allamuchy Mountain State Park, located in western New Jersey, adjoins Stephens State Park via a ten mile section of the Highlands Trail. Using an old railroad bed, this trail provides hikers, mountain bikers and horseback riders easy access from Waterloo Road through Kittatinny Valley State Park to Branchville, New Jersey. There are also miles of unmarked trails available for hiking, mountain biking and horseback riding in the Northern Section of Allamuchy Mountain State Park. The difficulty of the trails range from moderate to rugged. A 3 mile water trail on the Musconetcong River is available for canoes, kayaks and rowboats. The trail is between Waterloo Road at Route 80 and the Saxton Falls Dam.

Allamuchy Mountain State Park encompasses 9,092 acres of rolling and rugged terrain. The park has two distinct sections for mountain biking- Allamuchy Natural Area Trails (Deer Park) and Allamuchy North Trails (Waterloo). With the two sections combined, over 35 miles of trails (11 in the Allamuchy Natural Area and about 25 in the Northern section), provide mountain bikers of all skill levels and abilities with plenty of impressive singletrack adventures and opportunities for a diverse mountain biking experience.

The Musconetcong River, an excellent freshwater fishing spot, flows over and around boulders through Stephens State Park. A rocky path provides a walking trail that follows the river with places for picnicking in shaded areas. Forty tent and small trailer sites with fire rings and picnic tables are available for camping. Flush toilets and showers are within walking distance. Just about a mile upstream from Stephens State Park is Saxton Falls which contains the remains of Guard Lock 5, one of the Morris Canal’s 28 locks along with a dam and section of the old canal’s towpath. Stephens State Park offers excellent fishing opportunities for the freshwater angler. During the spring and fall, the NJ Division of Fish and Wildlife stocks the Musconetcong River with brown, rainbow and brook trout.