Río Gualeguaychú winds through Entre Ríos Province in northeastern Argentina, offering a diverse and rewarding sport fishing experience in a region celebrated for its rich aquatic ecosystems. The river flows through a landscape of wetlands, shallow channels, and interconnected waterways before emptying into the Río Uruguay, creating a complex network of fishing environments that range from the main river channel to interior streams and flooded lowlands. The city of Gualeguaychú serves as an excellent base for anglers, with well-developed infrastructure catering to sport fishermen and their families alike. Its strategic location — just 150 kilometers from the Zárate–Brazo Largo Bridge access — makes it highly accessible from Buenos Aires and surrounding regions.