Round Valley Reservoir was created in the 1960s by flooding a serene farming valley. Today, the remnants of the town remain beneath the surface of New Jersey’s largest reservoir, and the area surrounding the lake has been turned into a beautiful recreation area, with areas for hiking, camping, scuba diving, kayaking, and swimming. Round Valley Reservoir is one of the best places to go for a dip in the summertime, and visitors find that this Central Jersey swimming hole is scenic and serene.

Did you know that one of the best Central Jersey swimming holes is actually an enormous man-made reservoir? Round Valley is the largest reservoir in the state, and its beach and swimming area are fantastic spots to cool off in the heat of the summer.

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The water is crystal clear and warms up quickly each season, so it’s a great spot for families to come and hang out for the day.

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The swimming area is only open when lifeguards are on duty, so be sure to check the New Jersey Parks website to confirm each season’s hours and opening dates, as they vary based on weather, conditions, and staffing.

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Feeling hungry? Unpack a picnic and enjoy it either on the sand or at the pavilion just a few steps away from the beach.

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If you find yourself falling in love with this enormous park and recreation area, you’ll be happy to know you’re welcome to stay for a while longer.

Google Local / Moin Pervez In addition to being a fantastic Central Jersey swimming hole, Round Valley offers plenty of hiking trails, picnic areas, and even wilderness camping.

You can find more information about hours, rules, and regulations for the swimming area on the Round Valley Recreation Area website. Be aware, though, that Round Valley is rumored to be a bit haunted!

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In addition to being a fantastic Central Jersey swimming hole, Round Valley offers plenty of hiking trails, picnic areas, and even wilderness camping.

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Address: Round Valley Reservoir, Clinton Township, NJ 08833, USA