The Río Jeinemení is a river located in the province of Santa Cruz, Argentina. It serves as a natural border between Argentina and Chile for approximately 50 kilometers. The river is relatively short, with a reported length of 159 meters, though this figure may represent a specific mapped segment. For paddlers, the primary point of interest is the Mirador Río Jeinimeni, which provides a viewpoint and is likely a key access point for the river. The river flows through the remote and rugged landscapes of Patagonia, offering a paddling experience characterized by its role as an international boundary and its setting within this vast region. Specific details regarding access points, boat ramps, seasonal conditions, water temperature, hazards, regulations, and recommended routes are not provided. The overall character of the paddling experience on the Río Jeinemení is defined by its frontier location and the natural, undeveloped environment of southern Argentina.