Top 20 Lakes in Suffolk County
Best lakes in Suffolk County, located on Long Island, offer diverse natural landscapes for outdoor exploration. This region features a mix of sandy pine barrens, wetlands, and woodlands, providing habitats for various plant and animal species. Many lakes are situated within state parks and preserves, offering opportunities for nature trails and wildlife observation. The area combines suburban settings with significant natural refuges, making its lakes accessible for different types of outdoor activities.
Best lakes in Suffolk County
- The most popular…
Last updated: May 4, 2026
Cold Spring Harbor State Park
Highlight • Forest
Tip by
Mount Sinai Harbor
Highlight • Natural
Tip by
Sign up now to discover places like this
Get recommendations on the best single tracks, peaks, & plenty of other exciting outdoor places.
Sign up for free
Main House at Connetquot River State Park Preserve
Highlight • Historical Site
Tip by
View of the waterfall at the Belmont Lake outlet
Highlight • Viewpoint
Tip by
Southards Pond
Highlight • Lake
Tip by
Southards Pond
Highlight • Lake
Tip by
Lake Agawam
Highlight • Lake
Tip by
Napeague Harbor
Highlight • Lake
Tip by
Blydenburgh County Park
Highlight • Forest
Tip by
Argyle Lake
Highlight • Lake
Tip by
Sign up for free to discover even more lakes in Suffolk County.
Sign up for free
Already have an account?
Start today with a free account
Your next adventure awaits.
Login or Signup
Popular around Suffolk County
Tips from the Community
From this spot you get a nice view of a small waterfall flowing out of Belmont Lake into Carl's River. This is a pleasant spot to pause as you ride around Belmont Lake State Park and the surrounding area.
0
0
Napeague, a narrow strip between the Atlantic Ocean and Gardiners Bay, derives its name from the Montaukett word for "overflowed by the sea," a nod to the devastating 1938 hurricane that submerged the area. Napeague Harbor, once renowned for its pristine waters teeming with shellfish, eelgrass, and marine life, has gradually become shallower due to sand accumulation from natural causes. This change in depth has led to warmer waters and a subsequent decline in the harbor's rich biodiversity, leaving it a mere shadow of its formerly thriving ecosystem.
0
0
Connetquot River State Park Preserve is a 3,473-acre refuge of sandy pine barrens, wetlands, ponds, and woodlands. Visitors can find over 200 bird species and 300 plant species, along with other mammals, reptiles, amphibians, butterflies, and moths that once lived all over Long Island. This area was created as New York's first "State Park Preserve," and remains a protected area open to the public today.
0
0
Argyle Lake, situated in Belmont Lake State Park, boasts a serene 0.8-mile loop. Meandering through wooded landscapes with occasional open vistas and glimpses of the lake, this trail offers a tranquil escape.
0
0
Napeague Harbor once claimed to have the cleanest water on the East Coast and the large populations of oysters, clams, and scallops seemed to back this up. However, harsh erosion caused by large storms has put a damper on the shellfish populations. Efforts are in place to dredge the windblown sand and restore the harbor to its former glory.
1
0
This nearly 3,500-acre refuge of sandy pine barrens, wetlands, ponds and woodlands is nestled in central Long Island along the pristine, spring-fed Connetquot River. A wilderness surrounded by suburbs, the preserve provides excellent opportunities to see more than 200 bird and 300 plant species, as well as several mammal, reptile, amphibian, butterfly and moth species that once flourished throughout Long Island.
0
0
The park boasts over 8 miles of multi-use trails, catering to both casual riders and those seeking a challenge. Choose from scenic, flat paths around Stump Pond, moderate rolling hills through wooded areas, or even a dedicated BMX track for adrenaline-pumping thrills.
0
0
Frequently Asked Questions
What kind of natural landscapes can I expect around the lakes in Suffolk County?
Suffolk County's lakes are set within diverse natural landscapes, including sandy pine barrens, wetlands, and woodlands. Many are located within state parks and preserves, offering habitats for various plant and animal species. For example, Connetquot River State Park Preserve is a 3,500-acre refuge of these varied environments.
Are there family-friendly lakes or activities in Suffolk County?
Yes, many lakes in Suffolk County are family-friendly. Places like Cold Spring Harbor State Park offer serene nature trails suitable for families. Other highlights such as Southards Pond and Lake Agawam are also categorized as family-friendly.
What outdoor activities can I do near the lakes in Suffolk County?
Beyond enjoying the lakes themselves, you can find numerous outdoor activities. There are extensive options for hiking trails, including moderate routes like the Mashomack Red, Yellow, Green and Jone C. Coles Loop. You can also explore mountain biking trails, such as the Rocky Point Mountain Bike Trail, and various running routes.
Are there any historical sites or significant preserves near the lakes?
Yes, Suffolk County features several historical sites and preserves near its lakes. Connetquot River State Park Preserve, for instance, is a protected area with historical significance. Blydenburgh County Park also includes historical elements alongside its natural beauty.
Where can I find good viewpoints or scenic spots around the lakes?
For scenic views, consider visiting the View of the waterfall at the Belmont Lake outlet, where you can see a small cascade. Mount Sinai Harbor also offers beautiful views as a marine sanctuary and nature preserve. Many lakes within state parks, like Argyle Lake, provide picturesque settings.
What is the best time of year to visit the lakes in Suffolk County?
The lakes in Suffolk County are enjoyable year-round, but spring and fall offer pleasant temperatures for hiking and exploring the diverse ecosystems without the summer heat or winter chill. These seasons also bring vibrant foliage or blooming wildflowers.
Are there opportunities for wildlife observation near the lakes?
Absolutely. The lakes and surrounding preserves are rich in biodiversity. Connetquot River State Park Preserve is home to over 200 bird species and 300 plant species, as well as various mammals, reptiles, and amphibians. Mashomack Preserve on Shelter Island is also a haven for birdwatchers and nature enthusiasts.
Can I go clamming or fishing in any of the lake areas?
Yes, Mount Sinai Harbor is particularly popular with clamming and fishing enthusiasts, offering a beautiful marine sanctuary and nature preserve for these activities.
Are there any less crowded or 'hidden' lakes to explore?
While many popular spots are well-known, exploring areas within larger preserves like Mashomack Preserve or lesser-known sections of state parks can lead to quieter experiences. These areas often feature diverse ecosystems and trails away from the main attractions.
What are the typical trail difficulties around Suffolk County lakes?
Trails around Suffolk County lakes vary in difficulty. Many are easy to moderate, suitable for general walking and family outings. For example, the hiking trails guide lists routes from easy to moderate, such as the Bayard Cutting Arboretum Loop (easy) and the Mashomack Red, Yellow, Green and Jone C. Coles Loop (moderate).
Are there any lakes with beach access or coastal features?
Yes, some lake areas in Suffolk County offer coastal features or nearby beach access. Napeague Harbor is an example that includes both lake and beach categories, providing a mix of environments.
Most popular routes in Suffolk County
Most popular attractions in Suffolk County
Get inspired with the komoot mobile app
Didn’t find what you were looking for?
Find the best lakes in Suffolk County per region:
Explore more
Still not found your perfect lake in Suffolk County? Check out the guides of these regions to see even more beautiful places.
