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.

Keiners Bottoms is a freshwater reef site characterised by a rocky shoreline, large underwater boulders, and a gravel bed. Divers and snorkellers can explore depths ranging from 3 to 15 metres, with an average depth of 9 metres. The site is suitable for intermediate divers and offers both shore and boat access. Conditions include mild currents and visibility between 2 and 6 metres. Water temperatures are cold, reaching 35°F in early April before warming throughout the spring. Hazards at this location include boat traffic, cold water, entanglement risks, and low visibility. Facilities available include parking, toilets, air fills, equipment rental, a dive shop, boat charters, and guided tours.

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.