Best lakes around Islip offer diverse natural landscapes, from small ponds to larger lake areas within state parks. The region features freshwater wetlands, forests, and river systems that flow into the Great South Bay. These areas provide opportunities for outdoor recreation and wildlife observation, reflecting Long Island's natural beauty.
Last updated: June 14, 2026
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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.
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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.
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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.
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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.
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Southards Pond is the main attraction with Southards Pond Park. The main trail basically walks up to the shore of the water on the west side of the reservoir and offers an immersion into nature without having to leave the city. This spot, on the south side of the pond, crosses the Carlls River on a bridge and looks out over the water.
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Southards Pond offers beautiful views of the pond, streams, and wildlife. You can enjoy the tranquility of nature while getting some exercise. The trail is mostly flat and well-marked, so you don’t have to worry about getting lost or climbing steep hills. The best times to visit this trail are April through September, when the weather is pleasant and the foliage is lush. Dogs are welcome, but must be on a leash. Whether you are a beginner or a seasoned runner, you will find this trail to be a rewarding and relaxing way to explore the park.
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The area where Belmont Lake funnels back into the Carlls River at the southern end of the reservoir is a popular viewing spot of the water. There is a bridge crossing the creek with a head-on view of the small cascade formed by the lake flowing into the tight waterway.
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The region around Islip offers a diverse range of natural features. You can find freshwater wetlands, mature upland forests, and river systems that flow into the Great South Bay. Specific highlights include the small cascade at the View of the waterfall at the Belmont Lake outlet, and the extensive sandy pine barrens, wetlands, ponds, and woodlands within the Connetquot River State Park Preserve.
Yes, several spots are great for families. Southards Pond offers a mostly flat, well-marked trail suitable for all ages, where dogs are also welcome on a leash. Belmont Lake State Park, which includes View of the waterfall at the Belmont Lake outlet and Argyle Lake, provides paddle boating, canoeing, kayaking, fishing, and playgrounds. Connetquot River State Park Preserve is also family-friendly, offering opportunities to observe diverse wildlife.
The Main House at Connetquot River State Park Preserve is a significant historical site within a nearly 3,500-acre refuge. Additionally, Blydenburgh County Park features a historic mill district with structures like the 1798 "New Mill".
You can enjoy various outdoor activities. Belmont Lake State Park offers paddle boating, canoeing, kayaking, and fishing. For hiking, running, and cycling, there are numerous routes nearby. You can explore trails in areas like Connetquot River State Park Preserve or Blydenburgh County Park. Find more details on specific routes in the Hiking around Islip, Running Trails around Islip, and Cycling around Islip guides.
Yes, there are several hiking trails. The trail around Southards Pond is mostly flat and well-marked. Belmont Lake State Park offers walking trails, and Argyle Lake has a serene 0.8-mile loop. Blydenburgh County Park boasts over 8 miles of multi-use trails, including scenic paths around Stump Pond. For more options, check the Hiking around Islip guide.
The best times to visit trails like Southards Pond are typically from April through September, when the weather is pleasant and the foliage is lush. This period is ideal for enjoying outdoor activities and observing wildlife.
Yes, dogs are welcome at some locations, such as Southards Pond, but they must be kept on a leash. Always check specific park regulations before visiting with your pet.
The natural areas around Islip are rich in wildlife. At Connetquot River State Park Preserve, you can observe over 200 bird species and 300 plant species, as well as various mammals, reptiles, amphibians, butterflies, and moths. The South Shore Nature Center and Islip Meadows County Nature Preserve also offer opportunities to see native wildlife like swans, deer, ducks, and many species of birds and waterfowl.
Belmont Lake State Park offers paddle boating, canoeing, kayaking, and fishing, with rowboats available for rent and fishing permitted from them on weekdays. Knapps Lake in Islip offers limited fishing for Largemouth Bass, Sunfish, and Carp, but boating is prohibited there.
A popular spot for a scenic view is the View of the waterfall at the Belmont Lake outlet. This viewpoint offers a head-on perspective of a small cascade where Belmont Lake funnels into the Carlls River, with a bridge crossing the creek for an excellent vantage point.
Blydenburgh County Park is known for its lush hills and valleys at the Nissequogue River headwaters, as well as its historic mill district. It also features over 8 miles of multi-use trails, including scenic paths around Stump Pond, catering to both casual riders and those seeking a challenge.
Argyle Lake, situated in Belmont Lake State Park, offers a serene 0.8-mile loop trail. It meanders through wooded landscapes with occasional open vistas and glimpses of the lake, providing a tranquil escape for a quiet walk.


Still not found your perfect lake around Islip? Check out the guides of these regions to see even more beautiful places.