The Reserve Headquarters Overview

The Stony Brook-Millstone Watershed Reserve is a part of the Stony Brook-Millstone Watershed Association. The association is a private, non-profit organization dedicated to protecting and preserving the 265-square mile area drained by the Stony Brook and Millstone River. The reserve totals 930-acres of land that is owned and managed by the Association. The reserve has three access points: Reserve Headquarters, Pond House and Mount Rose Trails. There are over 10 miles of trails on the reserve that can be linked together for short strolls or longer walks.

There are several different trails that can be accessed from the Reserve Headquarters. Listed below are a few of the more popular loops. Please consult your trail map for a full view of all trails on the reserve.

After your hike, visit the Kate Gorrie Butterfly House. The 1500 square-foot display houses native plant and butterflies. Interpretive information is available inside the Butterfly House, which is open daily from May through September.

Pond House Overview:

There are several different trails that can be accessed from the Pond House. Listed below are a two of the more popular loops. But please consult your trail map for a full view of all trails on the reserve. The Pond House area can be reached from the parking area off Wargo Road or by taking the Circle Trail from the Reserve Headquarters and accessing a connecting trail. (see description for Circle Trail)

Reserve Headquarters

FROM NORTH/SOUTH JERSEY
Take Route 1 to Rt. I-95 South. Get off at Exit 4 - Rt. 31 North. Take Rt. 31 through the Pennington circle. Continue on Rt. 31 North through a blinking traffic light to the 3rd regular traffic light. Turn right onto Titus Mill Road. Follow Titus Mill Rd for 1.2 miles to Watershed entrance on your left. Parking area is at the end of the driveway.

FROM PRINCETON- MERCER COUNTY AREA
From Rt. 206, turn onto Cherry Valley Road. After about 2.5 miles, continue through 4-way stop at Great Road. After another 2.5 miles, cross traffic light at Carter Road. The road becomes Pennington- Rocky Hill Road. After 2.25 miles a center island divides the road. At the divide, turn right onto Titus Mill Road (blue and white Watershed sign on corner). Continue past Wargo Rd. (1st right) and make the 2nd right into the driveway with the white stone pillars. Park in lot at end of driveway.

Pond House

FROM NORTH/SOUTH JERSEY
Take Route 1 to Rt. I-95 South. Get off at Exit 4 - Rt. 31 North. Take Rt. 31 through the Pennington circle. Continue on Rt. 31 North through a blinking traffic light to the 3rd regular traffic light. Turn right onto Titus Mill Road. Follow Titus Mill Rd for 1.5 miles to Wargo Road. (You will pass the entrance to the Reserve Headquarters) Turn right onto Wargo Road. Pass the Watershed Organic Farm and parking is just outside the metal gate where the road bends sharply right. PLEASE DO NOT BLOCK THE GATE.

FROM PRINCETON- MERCER COUNTY AREA
From Rt. 206, turn onto Cherry Valley Road . After about 2.5 miles, continue through 4-way stop at Great Road. After another 2.5 miles, cross traffic light at Carter Road. The road becomes Pennington- Rocky Hill Road. After 2.25 miles a center island divides the road. At the divide, turn right onto Titus Mill Road (blue and white Watershed sign on corner). Take first right onto Wargo Rd. Pass the Watershed Organic Farm and parking is just outside the metal gate where the road bends sharply right. PLEASE DO NOT BLOCK THE GATE.