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Delaware & Raritan Canal
State Park

Central New Jersey
Burlington, Hunterdon, Mercer, Middlesex and Somerset Counties

Mailing Address:
145 Mapleton Road
Princeton, NJ 08540

GPS Coordinates
40° 22’ 07.27” N 74° 36' 58.14" W

View map for Bull's island Office and DnR Canal office

Size: 6,595 acres

Fees: No entrance fee.
Link to the Related Fees page

Parking is available in designated parking lots along the canal towpath. The main canal runs from Trenton to New Brunswick with a break at the Route 1 crossing. The feeder canal stretches from Trenton north to Frenchtown along the Delaware River.

The park office is located at 145 Mapleton Road.
From Route 1
Exit at Route 522 east (Ridge Road) heading towards the town of Kingston for approximately 1 mile. Make a left turn onto Division Street. At the stop sign turn left onto Academy Street (Academy Street becomes Mapleton road). The park office and Mapleton Preserve is located .2 miles on the left side of the road across from the Mapleton Nurseries.

From Route 27:
Turn onto Academy Street at the traffic light in Kingston (across from the Kingston Cemetery). Academy Street becomes Mapleton road as it heads towards route 1. The park office and Mapleton Preserve is located .3 miles on the left side of the road across from the Mapleton Nurseries.

Facilities & Activities:


  • Hiking
  • Horseback riding
  • Mountain biking
  • Biking

Nearby Attractions:



The Delaware and Raritan Canal State Park is one of central New Jersey’s most popular recreational corridors for canoeing, jogging, hiking, bicycling, fishing and horseback riding. The canal and towpath are part of the National Recreational Trail System. The 70-mile linear park is a valuable wildlife corridor connecting fields and forests.

With its 19th-century bridges, bridgetender houses, past and present locks, cobblestone spillways and hand-built stone-arched culverts, the canal is a tremendous attraction for history lovers. The upper reach of the feeder canal wanders through quaint New Jersey towns along the Delaware River such as Stockton and Lambertville. The main canal passes the Port Mercer canal house, through the charming village of Griggstown to Blackwells Mills, ending up in New Brunswick. Canoes can be rented at Griggstown and Princeton from private concessionaires.

Most of the canal system remains intact today and is a reminder of the days when the delivery of freight depended upon a team of mules or steam tugboats. Nearly 36 miles of the main canal and 22 miles of the feeder canal still exist, with many historic structures along the canal.

New Jersey's Black Bear Hunting Season

Following Governor Phil Murphy's Executive Order No. 34 (pdf), DEP Commissioner Catherine R. McCabe has issued Administrative Order No. 2018-24 closing all DEP owned, managed or otherwise controlled lands to bear hunting during the October and December 2018 season segments. The closure includes, but is not limited to, the following: state forests, parks, recreation areas and natural areas; and wildlife management areas.

Administrative Order 2018-24

Keep Your Park Clean

Through the Carry-In/Carry-Out Program you can help us keep your parks clean and beautiful by carrying out the trash you carry in. Bags are provided throughout the site. Thank you for your cooperation and remember to recycle.

Access for Persons with Disabilities

The towpath and recreational facilities at D&R Canal state park are partially accessible for persons with disabilities. Please contact the park office for further information regarding disability access needs. Text telephone (TT) users, call the New Jersey Relay Service at (800) 852-7899.

Park Hours

Open daily sunrise to sunset
Office hours:Monday - Saturday 8:30 am to 4:30 pm

Tree Stands and Blinds Policy

Park Advisory

Public Notification:

The Delaware River Joint Toll Bridge Contractor will begin the demolition of the I-95/I-295 bridge structure over the D&R Canal and Tow Path.  This work is scheduled to begin on November 26th.  For safety reasons they will be closing the tow path during the entire demolition period which is anticipated to last for 6 weeks.  Park visitors will NOT be permitted access to the path between Bernards Drive and Upper Ferry Road in Ewing Township, Mercer County.

BE ADVISED: A dredging project is planned for the D & R Canal from Kingston to Amwell Road at East Millstone. This extensive project (administered by NJ Water Supply Authority), is slated to begin in the JULY 9, 2018 and may take up to three years to complete.  For more information about this project, go to:

Hydrilla was discovered in the Washington Crossing section of the Canal in July 2016. Hydrilla is an extremely aggressive invasive aquatic plant that spreads very rapidly and forms dense mats that can choke the flow of water through the canal.  A lake management firm was hired in September, 2016 to survey, assess, and map the extent of hydrilla and other problem weeds in the high-priority segments of the Delaware & Raritan Canal. The survey report indicates that, for the 18.31 miles surveyed, submerged aquatic vegetation was collected at 96 percent of the sites, confirming the spatial extent and diversity of vegetation in the Canal. Hydrilla was observed at 56 percent of the survey sites.

On May 31, 2017, the Authority began a low-dose (<4 ppb) herbicide injection of Sonar Genesis for up to 120 days targeting the hydrilla and other nuisance aquatic vegetation.  At these low rates, there are no restrictions on fish/fish consumption, human/animal water consumption or contact. There are some recommended water irrigation usage restrictions that have been posted along the tred areas of the canal.  All Canal water customers have been engaged in the management planning process and continue to be updated on the status of treatment.  The herbicide application is showing promising signs of effectively controlling the Hydrilla and other nuisance aquatic plants.  The Authority and consulting firm are monitoring the status of plants and the herbicide concentrations at several points along the Canal. For monitoring and project information, please visit

D&R Canal Dredging Project

Park Maps

Park Map
High resolution for printing purposes; Print Size: 8.5 x 14
File Size: 2067KB

GPS Parking Lot Coordinates
Use to locate the available D & R Canal State Park parking areas.

D&R Canal State Park Path in Trenton NJ

D&R Canal State Park map through Duck Island - Lock 1 and Lock 2

Six Mile Run Trail Map

Horseshoe Bend Preserve map




Abbott Marshlands Stewardship Council

2013 Annual Report

Prallsville Mills, Route 29, Stockton

This charming 19th-century mill complex contains both grist and linseed oil mills. The site is leased and operated by the Delaware River Mill Society, which sponsors concerts and other programs on site. For information about programs, call (609) 397-3586.

Griggstown, Franklin Township, Somerset County

The wooden canal bridge, the Mule tender's Barracks, the Bridge tender's House and station and the site of the Griggstown Mill are situated along the canal. Canoes can be rented at a private canoe rental concession on the canal. The Griggstown Lock is less than a mile south on the towpath. A short walk brings you to grassy fields with picnic tables and grills.

Blackwells Mills, Franklin Township, Somerset County

The Bridge tender's House, wooden bridge and mill site are reminders of the area's active past. Several annual events are held at the house. Picnic tables and grills are located around a large field with views of the river. This historic site provides access to the canal, towpath and river.

Griggstown and Blackwells Mills are located between the Millstone River and the D&R Canal and can be reached off Route 533, Millstone River Road in Hillsborough or from Canal Road in Franklin Township. Both historic sites provide access to the Millstone River as well as the canal and towpath.

Trail heads for Six Mile Run Reservoir are nearby. Horse trailer parking is available.

Cook Natural Area (26 acres)

This area displays a deciduous lowland hardwood forest adjacent to the Heathcote Brook in Kingston. A short trail takes visitors to the forest and small ponds.

Kingston Trails Map

Six Mile Run, Franklin Township, Somerset County

The Six Mile Run Reservoir Site, is one of Central New Jersey's most hidden recreational resources for hiking, biking, horseback riding and Hunting. The 3000 acre reservoir site, rich in cultural and historic significance, is also a valuable oasis of wetlands, forests, farmlands and old fields.

Six Mile Run Hunting Map
(High resolution for printing purposes)
File Size: 1MB

Six Mile Run Reservoir Site Trail Map
(High resolution for downloading/printing purposes)
File Size: 724KB

Interpretive Programs

The Park staff offer a variety of historical and natural interpretive programs throughout the year. Contact the park office for a schedule of programs. Program fees may apply.



The towpath and multi-use trails are great for all ages and physical abilities. Both the Main Canal Trail, which runs 34 miles in length, and the Feeder Canal Trail at 31.5 miles are ADA accessible.

Kingston Trails of D&R Canal State Park

D&R Canal Towpath Trail in Abbott Marshlands

Feeder Canal Near the Trenton Battle Monument


Picnic table and grills are located at some of the access points and near a few of the historic sites. Informal picnicking is allowed along the canal. Open fires are not permitted. Charcoal fires are restricted to the grill in the picnic areas.


The historic towpath found along the feeder and main canal is suitable for hiking, jogging and biking. Horseback riding is permitted on the main canal only. Motorized vehicles or ATV's are not permitted on trails in the park. In addition to the canal trail, patrons can access trails at the Six Mile Run Reservoir Site, Kingston greenway and Cook Natural Area Trails from the park office located in Kingston as well as one trail found within the Bull's Island Natural Area.


Fishing is permitted the entire length of the canal. Anglers can find bass, sunfish, catfish, perch and pickerel within the canal as well as trout, which the Division of Fish and Wildlife stocks the canal with each spring. Fishing is also permitted in the Delaware River. All canal and river fishing is subject to the New Jersey Division of Fish and Wildlife regulations.


The D&R Canal State Park offers five boat launches into the Delaware River. Launches are located at:

Kingwood Township, Hunterdon County
Byram, Hunterdon County
Bulls Island, Stockton, Hunterdon County
Lambertville, Free
Fireman's Eddy, Hopewell Township, Mercer County

Boat Launches are available from sunrise to sunset year round. 

A Launch Ramp fee is in effect from Memorial Day to Labor Day.  Canoes, kayaks, boats, vessels and personal watercraft (e.g. jet-skis) that are transported in any manner are subject to launch ramp fees.  Required daily or annual permits can be purchased at the Bulls Island Main Office at 2185 Daniel Bray Highway, Stockton, NJ 08859.  For further information, call 609-397-2949.  

There are no motor restrictions on the river, but all the New Jersey boating regulations apply.

There are restrictions on boating and canoeing on the canal. Only electric motors, car top launch, and canoes are permitted, which, can be rented from private concessionaires in Griggstown and Princeton.

Launch Ramp Permit Information Sheet

Related Links

Bull's Island Recreation Area
Delaware and Raritan Canal State Park and Canal Commission
Delaware Canal State Park
D&R Greenway Land Trust
Delaware River Scenic Byway Map

FAQ's (Frequently Asked Questions)

What are the park hours? Park hours are sunrise to sunset.


Questions regarding our parks and forests can be directed to
Michele Buckley of the State Park Service.


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Last Updated: September 18, 2018