The Arroyo Ayuí Grande is a significant watercourse located in the southeast of Corrientes province, Argentina. It flows through the departments of Mercedes, Paso de los Libres, Curuzú Cuatiá, and Monte Caseros, serving as one of the principal tributaries of the Río Miriñay. Its geographical role as a key part of the local watershed is its defining characteristic. The arroyo's course traverses a region known for agricultural activity, particularly rice cultivation, which can influence water levels and management. A dam or weir exists on the arroyo, a feature paddlers must be aware of as a potential hazard and a point where portage may be required. Information regarding specific public access points, boat ramps, or facilities for paddlers is available through certain regional resources, though the exact locations are not detailed. The overall character of the paddling experience is likely shaped by the surrounding lowland plains of Corrientes, with a waterway that meanders through rural landscapes. No specific regulations prohibiting paddling were identified, but the presence of agricultural water management infrastructure suggests paddlers should be prepared for potential changes in flow and should research current access and conditions locally before a trip.