Sheps Canyon is a freshwater dive site located on the western shore of the Angostura Reservoir. The site is characterised by a rocky shoreline and underwater rock formations that provide structure for local fish. Divers can reach depths of up to 23 metres, with an average depth of 9 metres. Entry is via the shore. Summer water temperatures average 18.9°C, though conditions become significantly colder outside of these months, reaching as low as 7.2°C. Due to the risk of hypothermia in cold water, this site is recommended for intermediate divers. Facilities at the location include parking, toilets, showers, a cafe, and guided tours.

Breakers Beach at Angostura Reservoir is a popular freshwater site featuring fine sand and a gradual transition into deeper water. Snorkellers can explore depths ranging from 1 to 18 metres, with an average depth of 9 metres. The site is suitable for beginners and offers convenient shore access. Facilities available at the recreation area include parking, toilets, showers, equipment rental, a cafe, and first aid services. Divers and snorkellers should remain aware of potential hazards, including boat traffic, cold water temperatures, and the depth of the reservoir.

Pig Beach is a freshwater site located in the Black Hills Lakes, featuring a prominent point that transitions into a dramatic underwater wall and drop-off. The site reaches depths of up to 23 metres, with an average depth of 9 metres. Entry is possible from both shore and boat. Due to significant seasonal temperature fluctuations, ranging from 3-9°C in March to 21-27°C in summer, appropriate thermal protection is essential. Hazards at this location include cold water and boat traffic. Facilities available at the site include parking, toilets, showers, and a cafe.

Cold Brook Lake is a spring-fed freshwater site located in the Black Hills Lakes region. It is a designated no-gas-motor zone, which helps maintain water visibility and provides a quiet environment for snorkelers. Access to the water is via a shore entry. The site is suitable for beginners and offers basic facilities including toilets on-site. As a freshwater lake, it provides a calm setting for those looking to snorkel in a peaceful, non-motorised area. The site is well-regarded for its water clarity, making it a practical choice for those exploring the freshwater environments of the United States.