Wilson Lake Dam is a freshwater site located on the east side of the lake. The topography features rocky areas near the shore, which are suitable for snorkelling, while scuba divers can explore depths ranging from 2 to 20 metres. The site is frequently used for dive training and offers shore access. Conditions include mild currents and visibility typically around 6 metres. Water temperatures vary significantly by season, ranging from 4 to 29 degrees Celsius throughout the year. Divers should be aware of hazards including deep water and potential entanglement. Facilities available on-site include parking, toilets, showers, changing rooms, a rinse station, air fills, boat charters, guided tours, and a dive shop.

Wheatgrass Swim Beach, located in the Hell Creek area of Wilson State Park, offers shore access to freshwater diving and snorkelling. The site features a transition from a sandy beach to rocky drop-offs, providing varied topography for underwater exploration. Conditions are generally mild, though divers and snorkellers should remain aware of cold water temperatures and potential entanglement hazards. Typical dives last approximately 45 minutes. Facilities available at the site include parking, toilets, and showers. This location is suitable for beginners looking for accessible freshwater entry points.

Otoe Swim Beach is a designated swimming area located on the eastern end of Wilson Lake within Wilson State Park. This freshwater site offers easy shore access for snorkelers, with a bottom composition consisting of a mix of sand and rock. The average depth is 3 metres, with a maximum depth of 20 metres. Conditions vary, with visibility typically ranging between 2 and 3 metres and mild currents. The area is suitable for beginners, though snorkelers should remain aware of boat traffic and potential surf. Facilities available at the site include parking, toilets, showers, and changing rooms.

Minooka Park is a freshwater drop-off site located on the south side of Wilson Lake. Managed by the Army Corps of Engineers, the site features a buoyed beach area suitable for both diving and snorkelling. The topography consists of a drop-off with depths ranging from 1 to 6 metres, averaging 3 metres. Entry is via the shore, and conditions are generally mild, though visibility varies between 1 and 5 metres. The site is well-suited for beginners and families, with facilities including parking, toilets, showers, and changing rooms available on-site. Divers should be aware of potential entanglement hazards and surf conditions.