Río Jagüé flows through the high desert landscapes of La Rioja province in Argentina, forming part of the upper Vinchina drainage system. This river is situated within a region of significant ecological importance, as it lies on the access route to the San Guillermo Biosphere Reserve, a protected area originally established as a provincial reserve in 1972. The river's environment is characterized by its remote and pristine nature, offering a unique angling experience focused on native species within a conservation-focused setting.