Swimming Holes in New Jersey

Swimming Holes in New Jersey

Looking for the best swimming holes in New Jersey? From the rocky river gorges of the Delaware Water Gap to the tea-colored Pine Barrens rivers and the glacial lakes of the northern Highlands, the Garden State hides a surprising number of natural swim spots within a short drive of its cities. This guide maps out swimming holes in NJ by region, with honest notes on what each spot is really like, when to go, and how to stay safe.

A quick reality check first: most natural swimming holes in New Jersey are unofficial and unguarded, and a few well-known spots are not safe or legal to swim at all. We flag those below. Always confirm current conditions and access through official sources such as NJ State Parks & Forests and the National Park Service before you go.

Correction — September 19, 2026: We previously recommended Buttermilk Falls at India Brook Park in Mendham and tributary pools in the Delaware Water Gap for swimming. That advice was wrong. Do not swim at India Brook Park / Buttermilk Falls; Mendham Township records the swimming prohibition. Swimming and wading are prohibited throughout Van Campens Brook, including the area previously called “The Glen” on this site, under National Park Service rules. Follow all posted closures. These places are excluded from our swimming recommendations.

TL;DR

New Jersey's swimming options include managed pools, quarries, and designated river beaches. At Delaware Water Gap, choose the designated swimming area at Turtle Beach in New Jersey or Smithfield and Milford Beaches in Pennsylvania when open; NPS lists the beach rules and restrictions. None of these three beaches has lifeguards. India Brook Park / Buttermilk Falls and Van Campens Brook / The Glen are not swimming destinations. Confirm permission and current conditions before entering any water.

Featured New Jersey Swimming Holes

A few NJ spots stand out, either for their popularity or for how often they are searched and misunderstood:

• Farrington Lake: A wooded reservoir spanning New Brunswick, North Brunswick, and Milltown in central NJ, best known for a long-used rope swing. It is an unofficial, unguarded spot — enter feet-first and check water quality after rain.
• Hopewell Quarry: A spring-fed former quarry near Hopewell run as a members-only swim and dive club. Access requires membership or a guest arrangement, so confirm before visiting; it is not open public access.
• Blue Hole: A small, strikingly clear spring in the Pine Barrens near Winslow, the subject of local legend. Despite its fame, swimming is not recommended — it is an unofficial, unsupervised spot with cold water and steep, unstable edges.

Map & Top New Jersey Swimming Holes

These are the natural and official swim spots we track across New Jersey. Live closer to a city? See our guide to swimming holes near Newark, NJ.

• Delaware Water Gap designated beaches: Turtle Beach (NJ), Smithfield Beach (PA), and Milford Beach (PA) are the park's designated river swimming beaches. Use them only when open and follow NPS swimming guidance. This does not include Van Campens Brook / The Glen.
• Farrington Lake: A secluded lake spot with a popular rope swing, offering a rustic experience.
• Gunnison Beach: An official, clothing-optional ocean beach on Sandy Hook with full facilities.
• Highlands Natural Pool: A managed, natural swimming pool in the woods of Ringwood (fee required).
• Hopewell Quarry: A members-only freshwater quarry for swimming and diving (membership required).
• Musconetcong River: A rustic river swimming and jumping spot in Warren County.
• Otter Hole: A series of small cascades and a clear pool in a rocky gorge on Posts Brook.
• Surprise Lake: A remote lake requiring a strenuous hike, best for experienced hikers.
• Wharton State Forest Mullica River Swimming Spots: Serene, tannin-stained river spots in the Pine Barrens.
• Blue Hole: A distinctive spring-fed feature in the Pine Barrens near Winslow. A notable sight, but swimming is not recommended due to cold water and unstable edges.
• Bulls Island State Park: A scenic riverfront park on the Delaware River with full facilities.
• Devils Hole: A rocky stretch on the Peckman River near Paterson and Cedar Grove, among the closest natural spots to NJ's urban core.

Regions Overview

• Northwest (Skylands): Includes Turtle Beach's designated swimming area at Delaware Water Gap and Highlands Natural Pool. Confirm operating status and admission before visiting. Waterfalls and hiking access do not establish permission to swim: India Brook Park / Buttermilk Falls and Van Campens Brook are excluded.
• Central: Offers lakes, quarries, and rivers. Includes Farrington Lake, Hopewell Quarry, and the Milford spot on the Delaware.
• Shore: Home to the unique ocean beach experience at Gunnison Beach.
• South (Pine Barrens): Known for tea-colored rivers and secluded springs. Includes Wharton State Forest Mullica River Swimming Spots and the Blue Hole.
• Delaware River Corridor: Features several river access points. Includes Bulls Island State Park, Milford, and Trestle Bridge.

When to Go

The prime season for New Jersey swimming holes is late May through early September. Water temperatures are most comfortable from June to August. Always check river flow rates before visiting, especially after heavy rain, as currents can become dangerously strong. Summer weekends can be crowded at popular unofficial spots; consider weekday visits. For help matching a trip to the season and your comfort level, see the seasonal and skill-level planner.

Safety & Hazards (NJ-Specific)

• No Lifeguards: The vast majority of listed spots are unofficial and have no lifeguards. You swim at your own risk.
• Variable Conditions: River currents, especially in the Delaware Water Gap and on the Delaware River, can change rapidly. Never swim in flood conditions.
• Submerged Hazards: Natural water bodies contain unseen rocks, logs, and debris. Always enter feet-first the first time.
• Water Quality: Storm runoff can affect water quality, particularly in urban-adjacent areas like Devils Hole or Farrington Lake. Avoid swimming for 48 hours after heavy rain.
• Limited Access/Cell Service: Remote spots like Surprise Lake or the Wharton State Forest Mullica River Swimming Spots may have poor or no cell reception. Plan accordingly.
• Private Property: Respect all posted signs. Many unofficial spots are on public land but require respectful use to remain accessible.

Access & Permits

• Fees: Official destinations like Gunnison Beach, Highlands Natural Pool, and Hopewell Quarry require fees or memberships. Delaware Water Gap's designated beaches also charge seasonal fees; check current charges with the managing agency.
• Parking: For unofficial spots, park legally in designated areas only. Do not block roadways, private driveways, or emergency access. Illegally parked cars are often ticketed or towed.
• Trail Access: A trail to a water body does not make swimming legal. Wear appropriate footwear and check the land manager's rules before planning a hike or swim.

For low-cost trip planning, see the budget and free swimming holes guide. If you are drawn to NJ's cascades, the waterfall chasers guide covers how to approach waterfall pools safely.

48-Hour Itinerary: Delaware Water Gap & Northwest

Day 1: Check NPS alerts, then use the designated swimming area at Turtle Beach if it is open and conditions allow. Swimming and wading at Van Campens Brook / The Glen are prohibited. In the evening, use your reserved accommodation or campsite.
Day 2: Plan a visit to Highlands Natural Pool after confirming opening hours and admission. Do not include India Brook Park / Buttermilk Falls as a swimming stop.

FAQs

Q: What are the best swimming holes in New Jersey?
A: Start with designated swimming areas such as Turtle Beach at Delaware Water Gap or managed options such as Highlands Natural Pool, and confirm current opening hours, admission, and conditions. India Brook Park / Buttermilk Falls and Van Campens Brook / The Glen prohibit swimming and are excluded from our recommendations.

Q: Can you swim in the Blue Hole in NJ?
A: Swimming in the Blue Hole near Winslow is not recommended. It is an unofficial, unsupervised Pine Barrens spring with very cold water and steep, unstable edges. It is best appreciated as a striking sight rather than a swimming hole.

Q: Are these swimming holes safe for children?
A: Safety depends on the specific spot and conditions. NPS states that Turtle, Smithfield, and Milford Beaches at Delaware Water Gap have no lifeguards. Children need constant, close adult supervision at every swimming area; choose a currently open, designated area suited to their ability.

Q: Can I bring my dog to these swimming holes?
A: Rules vary. Dogs are typically prohibited at official beaches like Gunnison Beach. At unofficial, natural areas, they may be allowed but must be under control. Always clean up after your pet and ensure they do not disturb wildlife or other visitors.

Q: Is it legal to swim at these "unofficial" spots?
A: Do not assume that public access or an unofficial listing permits swimming. Check the land manager's rules and posted signs. Swimming is prohibited at India Brook Park / Buttermilk Falls, and swimming and wading are prohibited throughout Van Campens Brook / The Glen.

Q: What should I bring to an unofficial swimming hole?
A: Essentials include water shoes, drinking water, a first-aid kit, a trash bag (pack out everything), a charged phone (in a waterproof case), and a flotation device if needed. Never rely on your phone alone for navigation or emergencies.

Responsible Recreation

• Pack It In, Pack It Out: Leave no trace. This includes all trash, food waste, and dog waste.
• Respect Nature: Do not disturb plants, wildlife, or geological features. Avoid using soaps or shampoos in the water.
• Be Considerate: Keep noise levels down. Respect the space and experience of other visitors.
• Follow Local Rules: Obey all posted signage regarding parking, fires, and prohibited activities. Your actions impact continued access for everyone.
• Prepare: Research your destination, check weather and water conditions, and tell someone your plans before visiting remote areas.