Gull Lake is a freshwater site in the United States offering shore access for both divers and snorkellers. The site features various submerged artifacts, including a phone booth, a motorcycle, and several small boats. Depths range from 3 to 12 metres, with an average depth of 13 metres. A thermocline is typically present between 9 and 11 metres. Visibility generally fluctuates between 5 and 15 metres. Divers should be aware of potential hazards, including boat traffic and the risk of entanglement. Cold water temperatures, particularly in winter when they reach 0 to 5 degrees Celsius, present a risk of hypothermia. Facilities at the site include parking and toilets.

Lake Sixteen is a freshwater dive site in the United States featuring artificial reefs and drop-offs. The site is suitable for intermediate divers, with depths ranging from 8 to 26 metres and an average depth of 18 metres. Access is via a shore entry. Conditions include mild currents and visibility between 1 and 5 metres. The water is cold year-round, with temperatures reaching 0°C in winter and 7 to 12°C in early April; a dry suit is recommended. Hazards include cold water, depth, low visibility, and overhead environments. Facilities at the site include parking and showers.