Embalse Santa Juana is a large artificial reservoir on the Huasco River, located approximately 15 kilometers southeast of the city of Vallenar in Chile's Atacama Region. It is the largest and most important hydraulic infrastructure in the region, with a significant storage capacity. The reservoir is situated in the Valle del Huasco, and a primary access point is via Route C-485, which leads from Vallenar into the mountains for about 22 kilometers. This road provides access to a designated parking area and a pedestrian zone near the dam. The water body is set within a desert mountain landscape, offering a stark and scenic environment for visitors. A notable trail of approximately 24 kilometers, considered moderately challenging, runs near the reservoir and is open year-round. The reservoir's primary functions are water storage and hydroelectric power generation, which may imply regulated water levels. There is no specific information available regarding designated paddling put-ins or take-outs, water temperature patterns, water quality, on-water hazards, or any regulations explicitly permitting or restricting recreational paddling. The available amenities appear limited to the mentioned parking and pedestrian area. The overall character of a visit is defined by its remote, engineered presence within the arid Atacama landscape, serving a vital regional purpose while offering a destination for hiking and viewing.