Cisco Beach

Cisco Beach on Lake Powell in San Juan County, Utah, provides freshwater divers with access to one of the American Southwest's most dramatic and visually spectacular reservoir environments—a massive impoundment of the Colorado River surrounded by the red sandstone canyon country of the Colorado Plateau, where the contrast between the vivid red cliffs and the brilliant blue water creates a landscape of extraordinary color intensity. Lake Powell, created by Glen Canyon Dam in 1966, flooded Glen Canyon's labyrinthine network of tributary canyons to create a reservoir with 1,960 miles of shoreline—more than the Pacific coast of the continental United States—in one of the American West's most geological diverse canyon systems. The diving environment at Lake Powell reflects the reservoir's canyon origins. The flooded canyon walls continue below the surface as submerged sandstone cliffs, alcoves, and the mouths of tributary canyons that now open underwater rather than into the dry air of the Colorado Plateau. Exploring these submerged canyon features—swimming through the mouth of a drowned side canyon, hovering beside the red sandstone walls that rise from the lake bottom to the surface—is a freshwater diving experience that combines the structural drama of ocean wall diving with the geological storytelling of a landscape shaped by millions of years of desert erosion. Water clarity at Lake Powell can be genuinely impressive, particularly in sections of the reservoir removed from major inflows where sediment settling has occurred. The Colorado River's red sediment load reduces clarity in areas near river inflow, but the lake's vast size and the time that water spends in the reservoir before reaching the dam allows considerable clearing. In optimal sections, visibility may reach twenty to thirty feet—adequate for appreciating the canyon walls and the geological features of the submerged landscape. For beginner divers, Cisco Beach provides an accessible entry point to Lake Powell's underwater canyon world in the protected conditions of a designated recreation area. The calm water of Powell's enclosed canyon arms, sheltered from the wind that can affect more exposed sections of the lake, creates manageable conditions for developing open-water freshwater skills while experiencing the visually extraordinary setting of Colorado Plateau canyon diving. The red sandstone visible above and below the waterline creates a visual continuity between the terrestrial and aquatic that few freshwater diving environments can provide. Lake Powell's above-water experience—the houseboat culture, the cliff jumping, the kayaking through flooded canyons—creates a recreational context for diving visits that makes the site attractive for groups with mixed diving interest. Including a dive at Cisco Beach in a Lake Powell boating trip adds an underwater dimension to a region more often experienced from boats or canyon trails, revealing the drowned landscape that Glen Canyon Dam created from what was, by all accounts of those who saw it before inundation, one of the American West's most beautiful and irreplaceable canyon environments.