Lake Monomonac is a freshwater lake located on the border of New Hampshire and Massachusetts. It covers an area of approximately 300 acres and is known for its scenic beauty and recreational opportunities. The lake is surrounded by residential properties and offers activities such as fishing, boating, and swimming. The lake is fed by several small streams and has a maximum depth of about 30 feet. It is home to various fish species, including bass and perch, making it a popular spot for anglers. The surrounding area features hiking trails and picnic spots, attracting visitors year-round.