Custer Cove is a freshwater site located in Glendo Reservoir, United States. The shoreline features a mix of shale and clay shelves that transition into a sandy beach. Underwater, the transition zones between the rocky substrate and sandy areas provide habitat for local fish. Snorkelling here is suitable for beginners, though conditions vary due to the cold water temperatures, which can range from 4 to 10 degrees Celsius. Deeper sections of the reservoir are colder and may contain thermoclines. Access is via the shore, and the site includes toilet facilities. Snorkellers should remain aware of boat traffic in the area.

Soldier Rock Coves is a rugged, rocky area within Glendo Reservoir featuring several small, protected coves. The site consists of submerged rock formations that provide habitat for smallmouth bass and walleye. Snorkelling here is rated 2/5 and is best suited for intermediate participants due to the challenging environment. Water temperatures are cold, particularly in early April when readings range from 3 to 7°C, so appropriate exposure protection is necessary. Divers and snorkellers may encounter low visibility and cold water conditions. Access to the water is available via both shore and boat entries. Facilities at the site include parking and toilets.

Burnt Wagon is a remote freshwater snorkel site in Glendo Reservoir, United States. Accessible via a hike from the northern end of Sandy Beach, the site is isolated from motorized vessels, which contributes to its water conditions. Snorkellers should be prepared for cold water temperatures, which measure approximately 4°C (40°F) in early April. The site is suited for intermediate snorkellers due to hazards including cold water, potential entanglement, and low visibility. Toilets are available at the site. Given the challenging conditions and cold temperatures, appropriate thermal protection is necessary for those visiting this location.