The Rio Apa is a river forming part of the border between Paraguay and the Brazilian state of Mato Grosso do Sul. It is a tributary of the larger Paraguay River, which itself flows into the Paraná River. The river is known for its crystal clear waters and is a significant feature of the region's rich biodiversity. For paddlers, the river offers a scenic and adventurous experience, characterized by floating in these clear waters amidst a natural setting. Boat ramps exist, and free access to launch points is available. The overall character of a paddling trip on the Rio Apa is one of immersion in a biodiverse environment, with the water's clarity being a defining aesthetic feature. There is no information indicating any paddling restrictions or regulations, major hazards, recommended routes, seasonal water temperatures, water quality issues, or specific facilities beyond general launch access.