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New Jersey is home to a rich diversity of snake species, and several of its lakes and rivers are teeming with slithering activity — especially during the warmer months.
While most of the state’s snakes are non-venomous and play a key role in pest control, that doesn’t stop many residents and visitors from flinching at their sight. According to World Atlas, the only venomous snake native to New Jersey is the eastern timber rattlesnake, which tends to avoid human interaction and is mostly found in remote, wooded areas.
Still, several bodies of water have gained a reputation as hotspots for snake activity. From the northern lakes to the southern riverways, here are five of the most snake-filled aquatic environments in the Garden State, according to World Atlas:
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Merrill Creek Reservoir (Warren County)
This 650-acre manmade reservoir in western New Jersey is known not just for its deep, clean waters and sport fishing, but also for a healthy snake population. The northern water snake is the most commonly spotted species here, often seen basking on rocks along the shore. The forested buffer zone and undeveloped surroundings also attract rough green snakes and eastern milk snakes, making it a reptile-friendly habitat year-round.
Manasquan Reservoir (Monmouth County)
Located in Howell Township, this 770-acre recreational lake is one of Central Jersey’s busiest — and most snake-active. Northern water snakes thrive in the wetlands and coves, particularly near fishing areas and the boardwalks along the 5-mile perimeter trail. Due to the lake’s popularity, sightings are frequent and often up close, especially during spring and summer.
Parvin Lake (Salem County)
Set within Parvin State Park, this southwestern New Jersey lake is surrounded by cedar forests and marshy lowlands — a perfect environment for snakes. Northern water snakes are routinely spotted near boat launches and docks, while ribbon snakes and garter snakes navigate the thick vegetation along the water's edge. The nearby Pine Barrens bolster reptile diversity and density.
Lake Hopatcong (Morris and Sussex counties)
As New Jersey’s largest freshwater lake, Lake Hopatcong spans more than 2,500 acres and is home to a robust population of northern water snakes. Inlets like Woodport and Great Cove are known for frequent sightings. The lake’s popularity with swimmers and boaters means human encounters are common. While mostly harmless, the lake once gained infamy for an unverified sighting of a 16-foot green anaconda — a non-native species that remains a local legend.
Mullica River (Atlantic and Burlington counties)
Winding through the heart of the Pine Barrens, the Mullica River supports perhaps the state’s greatest variety of snake species. Remote sections near Wharton State Forest and Sweetwater host black racers, corn snakes, ribbon snakes, king snakes, and more. The river’s wild, undisturbed stretches make it ideal for reptiles, but sightings are typically limited to kayakers and trail explorers deep in the woods.
This article originally appeared on NorthJersey.com: These are the 5 most snake-filled lakes in NJ, per World Atlas
