Lake Hopatcong is indeed the largest freshwater lake in New Jersey, covering approximately 4 square miles. Nestled in the picturesque northern region of the state, it is situated in both Sussex and Morris counties. The lake is a popular destination for various recreational activities, including boating, fishing, and swimming, and it serves as a vital ecological resource. Its surrounding areas feature a mix of residential properties, parklands, and natural spaces, making it a scenic spot for both locals and visitors alike. The lake's rich history and recreational opportunities contribute to its importance in the community and the state as a whole.