Haviland Pond is a calm, freshwater dive site suitable for beginners. Divers enter from the shore to explore depths ranging from 4 to 6 metres. The site features reef structures, though divers should remain aware of potential entanglement hazards and carry a line cutter or dive knife. Visibility typically ranges between 5 and 10 metres, though conditions can vary, which may impact navigation. With no significant current to manage, the site provides a relaxed environment for building buoyancy and navigation skills. Typical dives last approximately 30 minutes. Check locally for current facility availability before arrival as amenities may change.

Mashapaug Pond is a 300-acre freshwater lake located within Bigelow Hollow State Park in Union, Connecticut. Set inside the Nipmuk Forest, the site features rock formations and provides shore access for divers. Depths range from 4 to 12 metres, with an average depth of 5 metres. Conditions include mild currents and visibility between 2 and 10 metres. Water temperatures fluctuate significantly, ranging from 4.4°C at depth to 21°C at the surface during summer months. Divers should be aware of potential hazards including boat traffic, cold water, entanglement risks, and low visibility. Facilities available at the park include parking, toilets, showers, changing rooms, and a rinse station.