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.

Two Rivers is a freshwater site located in the United States near the town of Rivers. It serves as the meeting point of the Current and Jacks Fork rivers. The topography consists of wide gravel bars and deep holes formed where the two currents mix. Access to the water is available from both the shore and by boat. Conditions at this site are subject to moderate currents, and snorkelers should be aware of the potential for strong currents. Facilities available at the site include parking, toilets, and equipment rental. A typical visit lasts approximately 60 minutes.

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.