Dique Los Reyunos

Dique Los Reyunos is a spectacular freshwater dive site nestled in the Andes foothills of Mendoza province in Argentina's Cuyo region. This beginner-friendly reservoir, created by the Los Reyunos dam on the Rio Diamante, offers a unique altitude diving experience surrounded by the stunning landscapes of the Andean piedmont. The reservoir sits at approximately 1,400 meters above sea level, qualifying dives here as altitude diving and requiring appropriate adjustments to dive tables and computer settings. Despite this technical consideration, the calm and predictable conditions make it an excellent site for divers of all levels, with the added educational value of practicing altitude diving techniques in a forgiving environment. The underwater scenery at Los Reyunos is shaped by the geological character of the Diamante River valley. The reservoir bottom features a mix of rocky substrates, sandy areas, and submerged features from the pre-dam landscape. Depending on conditions, divers may encounter submerged rock formations, old vegetation structures, and the gentle slopes of the original valley walls, all of which create interesting topography to explore. Visibility in the reservoir can be excellent, particularly during the autumn and winter months when reduced rainfall limits sediment input. The clear freshwater creates beautiful light conditions, with sunbeams penetrating deep into the water column on sunny days. The turquoise and emerald hues of the reservoir water are legendary among Argentine divers and photographers. The freshwater environment hosts various species of fish, including rainbow trout and other species introduced for sport fishing. These fish add a dynamic element to dives, as they often approach divers with curiosity. Aquatic plants in the shallower areas create underwater gardens that sway gently and attract smaller organisms. The best time to dive Los Reyunos is during the warmer months from November through March, when water temperatures are most comfortable, though the exceptional visibility of the cooler months draws dedicated divers year-round. The surrounding canyon scenery is breathtaking, making the journey to the site as memorable as the dive itself. Dique Los Reyunos represents one of Argentina's premier freshwater diving experiences, combining altitude adventure with underwater exploration in a setting of extraordinary natural beauty.