The lake reaches depths of approximately 65 feet, which is significantly deeper than most glacial lakes in the region.
It is one of the few lakes in the Minnesota Twin Cities area that allows scuba diving training and recreational diving.
The park preserves a portion of the St. Croix Moraine, a geological formation created by the retreat of the Superior Lobe of the Wisconsin Glaciation.
The water clarity is maintained in part because the lake has no significant inlet streams that would typically carry sediment.
The park offers specific equestrian-only trails that are separate from the multi-use hiking paths.
Square Lake Park is renowned for having some of the clearest water in the Twin Cities metropolitan area, with visibility reaching up to 15 feet. Located in Stillwater, Minnesota, the 475-acre park features a spring-fed lake that serves as a premier destination for scuba diving. The site provides a designated beach area for swimming alongside boat launches for non-motorized and motorized watercraft. Visitors can access over 5 miles of hiking and equestrian trails that wind through wooded terrain and prairie landscapes. During winter, the park maintains groomed cross-country ski trails. The grounds include dedicated picnic shelters and open areas for recreational activities.
The elevated overlook area providing a panoramic view of the lake's blue water against the forest backdrop.
Bring a mask and snorkel to take advantage of the exceptionally high water clarity.
If visiting on a summer weekend, arrive early as the beach parking lot reaches capacity quickly.
Check the park's online trail conditions page before visiting if you plan to go cross-country skiing.
Do not attempt to swim outside of the designated buoyed beach area for safety reasons.
Park trails are groomed for cross-country skiing only during the winter season.
Leash your dogs at all times; no alcohol is permitted in the park; scuba divers must display a dive flag.
