South Shore Chalk Cliffs is a freshwater site located at Lewis and Clark Lake, characterised by towering Niobrara chalk and Carlisle shale cliffs. The underwater topography consists of rocky structures that provide habitat for local aquatic life. Access to this site requires a boat. Conditions vary, with depths ranging from 5 to 14 metres and an average depth of 7 metres. Visibility is limited, typically between 1 and 5 metres, and currents are generally mild. This site is suited for intermediate snorkellers looking to explore the unique geological formations along the shoreline.

Burbach Beach is a designated swimming area on the Nebraska side of Lewis and Clark Lake. This freshwater site offers a sandy shore entry leading to shallow depths of 1 to 3 metres. It is suitable for beginners, though conditions vary with mild currents and potential for low visibility due to silt. The site features on-site showers for convenience. Snorkellers should remain aware of boat traffic in the area. Typical sessions last approximately 45 minutes. The site is rated 2/5 for snorkelling, providing a straightforward environment for those looking to explore the sandy bottom in a controlled, shallow setting.

Bloomfield is a freshwater dive site located in the United States near Lewis and Clark Lake. Situated further up-reservoir, the site is prone to sedimentation, which can result in low visibility. Divers access the water via a shore entry. The site is suitable for beginners, with depths ranging from 1 to 14 metres and an average depth of 5 metres. Currents are generally mild. Water temperatures vary significantly, ranging from 2 to 8 degrees Celsius in April to 20 to 28 degrees Celsius during the summer months. Facilities available at the site include parking, toilets, and showers. Snorkelling is possible but limited due to the sedimentation.