Arroyo Villaguay winds through the rolling landscape of Entre Ríos Province in northeastern Argentina, a region defined by its dense network of streams, wetlands, and river systems draining toward both the Paraná and Uruguay rivers. This freshwater arroyo flows through the Villaguay department, passing near the city of Villaguay, and forms part of the rich aquatic mosaic that makes Entre Ríos one of Argentina's most productive inland fishing destinations. The stream's lowland character, typical of the Mesopotamian region, gives it a gentle gradient with meandering channels, vegetated banks, and the warm, productive waters that support a diverse community of native freshwater fish.