Arroyo Covunco is a 95-kilometer stream flowing through the Precordillera Neuquina of Neuquén Province, Argentina. It originates approximately 30 kilometers west of the city of Zapala, formed by the confluence of Arroyo Huayapa and Arroyo Carreri, and travels eastward through a notably scenic valley before emptying into the Río Neuquén at a place known as Paso de los Indios. The stream passes through the small locality of Mariano Moreno and runs alongside the Regimiento de Infantería de Montaña 10 Teniente General Racedo. The valley carved by the Covunco is considered one of the more picturesque corridors in this part of Neuquén Province, making it an appealing destination not only for its natural beauty but also for anglers drawn to the streams of the Patagonian precordillera.