Cerrito Swim Beach is the primary designated swimming area at Abiquiu Lake, offering a shore entry point composed of sand and gravel. This site is suitable for beginners, though snorkellers should be aware that visibility can be reduced during peak summer weekends due to high foot traffic. The water temperature remains cold even during summer months because of the high elevation of 6,400 feet. Divers and snorkellers must remain cautious of boat traffic in the area. Facilities available at the site include parking, toilets, showers, and changing rooms.

Riana Bluff Coves are situated directly below 150-foot sandstone bluffs near the Riana Campground. This freshwater site features distinct underwater topography defined by submerged boulders that create complex rocky coves. The site is accessible via both shore and boat entries and is best suited for intermediate snorkelers. Conditions at Abiquiu Lake can vary, so visitors should plan accordingly when navigating the rocky terrain. The site offers a unique perspective of the lake's geological features, with the submerged rock structures providing the primary interest for those exploring the area.

Rio Chama Inlet is a freshwater site located at the western end of Abiquiu Lake where the river flows into the reservoir. The topography features a transition from riverine to lacustrine environments. Divers can reach depths of up to 30 metres. Conditions vary, with visibility highly dependent on recent rainfall and river silt. The water remains cold year-round, ranging from the mid-30s to mid-40s Fahrenheit in winter and rising to the mid-60s to mid-70s Fahrenheit in summer. Wetsuits are recommended for all dives. Access is available via both shore and boat entry, and the site experiences mild currents. This location is suitable for advanced divers due to the cold water and low visibility hazards.