Estero Los Arrayanes, also referred to as Estero del Arrayán, is a waterway located in the Valparaíso Region of Chile. The water body is approximately 30 kilometers in length and flows through the subregion of Valparaíso. Its network includes five tributaries but no distributaries, indicating it is a single-channel stream. For paddlers, the primary practical information pertains to fishing access. The waterway is noted for having specific access points, boat ramps, and facilities that are intended to support a day on the water, though the exact locations and nature of these amenities are not detailed. The overall character of the paddling experience is likely shaped by its role as a fishing destination, suggesting a focus on quieter, angler-friendly sections of water. No information is available regarding specific hazards, seasonal water temperatures, water quality, seasonal recommendations for paddling, notable sights, wildlife, historical significance, or any paddling-specific regulations or restrictions. The description of its aesthetic appearance or the recommended routes for day trips is also not provided.