Quebrada de Mateo is an intermittent natural watercourse located in the Antofagasta Region of Chile. It originates in the Domeyko mountain range, just south of the port of Antofagasta. The waterway is approximately 77 kilometers in length. As an intermittent stream, its flow is not constant and is highly dependent on seasonal rainfall patterns typical of the arid Atacama Desert region. This characteristic defines the paddling experience, as water levels can vary dramatically and the stream may be dry for extended periods. The sub-basin spans the Antofagasta and Taltal provinces within the region. For paddlers, this suggests a remote and rugged desert environment. Specific access points, boat ramps, or facilities for paddlers are not detailed, indicating a lack of developed infrastructure. The intermittent nature of the flow is the primary safety consideration, as paddlers must verify water presence and sufficient levels before attempting any trip. The best season for paddling would logically coincide with periods of rainfall in the cordillera, but no specific months or water temperature data are provided. The overall character is that of a desert wash, offering a challenging and potentially technical experience in a stark, dramatic landscape dominated by the Domeyko Range. No specific regulations, recommended routes, water quality details, or notable wildlife sightings are mentioned for paddling activities.