Embalse Arroyito is the final reservoir in the remarkable chain of dams along the Río Limay in Río Negro, Argentina. Situated at the downstream end of the Limay system, it receives water from the upstream Embalse Ramos Mexía and Embalse El Chocón before the Limay ultimately meets the Río Neuquén. As the last impoundment before that confluence, Arroyito occupies a strategically important position in the Patagonian river network, making it a distinctive destination for anglers exploring the lower Limay corridor. The reservoir is classified as a free-fishing zone (Tramo de Pesca Libre), meaning it is open to the public without the need for private access arrangements, which adds to its appeal for visiting and local anglers alike.