Arroyo El Chancho is a stream located in the Chaco province of Argentina, situated at approximately 27°40′S, 58°58′W. This waterway flows through the characteristic landscape of the Argentine Chaco region, a vast subtropical lowland known for its dense forests, wetlands, and rich aquatic biodiversity. The Chaco is home to some of South America's most prized sportfish, and streams like Arroyo El Chancho form part of the broader network of waterways that drain into the larger river systems of northeastern Argentina. Nearby waters include Río Paraná Miní and Riacho Antequera, both of which are known to hold golden dorado, suggesting that the surrounding region offers genuine sportfishing potential.