Square Lake Park is a beautiful beach located in Marine on Saint Croix, United States. The beach is about 15 minutes from Stillwater and offers a peaceful escape from the hustle and bustle of city life. The beach is about 300 feet long and has a nice sandy shoreline. Visitors can enjoy swimming, fishing, boating, paddleboarding, kayaking, and other water activities. Square Lake Park offers various amenities, including bathroom access, picnic areas, grills, and volleyball courts. Dogs are not allowed on the beach.