The Quebrada San Andrés is an intermittent natural watercourse located in the Atacama Region of Chile. It originates on the western side of the watershed divide with the Salar de Maricunga. The water body flows through a broad valley at an altitude of approximately 2400 meters above sea level. Its character is defined by its intermittent flow, meaning water levels and the viability of paddling are highly dependent on seasonal rainfall and snowmelt patterns. The surrounding landscape is part of the high desert of the Atacama Region, featuring arid, mountainous terrain. The watercourse is part of a larger hydrological sub-basin that includes the administrative communes of Chañaral, Diego de Almagro, and Copiapó. Specific access points for putting in or taking out, detailed routes, seasonal water temperatures, water quality, and any paddling-specific regulations or facilities are not described. The area's historical or cultural significance is not mentioned, nor are any notable sights, hazards, or wildlife features directly along the waterway. Paddlers should be aware that the intermittent nature of the flow presents a significant planning consideration, and thorough, up-to-date local reconnaissance is essential before any trip.