Whetstone Bay is a freshwater site featuring a mix of reef and artificial reef structures, including submerged flooded timber in shallower sections. Snorkellers can explore these complex wooden structures, which provide a distinct underwater topography. Depths range from 12 to 18 metres, with an average depth of 7 metres. Visibility is variable, typically between 2 and 6 metres. Access is available via both shore and boat entries. Divers and snorkellers should be aware of mild currents, potential entanglement hazards, and active boat traffic in the area. Water temperatures remain cold at depth, with significant cold pockets possible throughout the year. Parking facilities are available for visitors.

Pease Creek Recreation Area offers shore entry into Lake Francis Case, providing access to a rocky shoreline near the bluffs. The underwater terrain features rocky outcroppings and crevices for snorkelers to explore. The site is suitable for beginners, though water conditions vary significantly due to seasonal temperature changes. Surface temperatures range from the low 70s to low 80s °F in summer, while spring and early summer temperatures are cooler, often between the 40s and mid-60s °F. Divers and snorkelers should be aware of deep water and potential thermal layering throughout the year. Facilities at the recreation area include toilets and showers.

Gravel Beach at Lake Oahe features a gravel-bottomed shoreline that contributes to improved underwater visibility compared to the eastern shore. This freshwater site is suitable for beginners and offers shore access for both diving and snorkelling. Divers and snorkellers should be aware of cold water temperatures, which can drop to 1-2°C in April, and remain cautious of boat traffic in the area. The site is well-equipped with amenities including parking, toilets, showers, changing rooms, a rinse station, and a dive shop providing air fills and equipment rental. Guided tours and boat charters are also available for those exploring the lake.