Blue Spring is a freshwater site in the United States, recognised as the deepest spring in Missouri. Snorkellers typically experience the site where the spring branch meets the Current River, creating a transition between the turquoise spring water and the river water. The site is accessed from the shore and is suited for intermediate snorkellers. Water temperatures remain a consistent 57°F (14°C) throughout the year. Moderate currents are present at this location. Facilities available at the site include parking and toilets.

Rocky Falls features a 40-foot waterfall that cascades into a large plunge pool. Divers and snorkellers can explore the area around the boulders located at the base of the falls. This freshwater site is accessible from the shore, with the main activity area located approximately 16 metres from the entry point. Conditions at the site are variable, with mild currents present. The site is suitable for beginners and offers facilities including parking, toilets, showers, changing rooms, and a rinse station. Air fills, equipment rental, and guided tours are available on-site, along with a cafe and first aid services.

Alley Spring Run is a freshwater site near Rivers, United States, offering a snorkel experience in a spring-fed channel that flows toward the Jacks Fork River. The site features a constant water temperature of 58°F (14.4°C), making cold water a primary hazard for visitors. Access is via a shore entry, and the run typically experiences mild currents. The site is suitable for beginners, with a typical snorkel duration of 60 minutes. Facilities available at the location include parking, toilets, and showers, with guided tours also offered. Swimming is prohibited within the spring pool itself, restricting water activities to the designated spring run area.