Río Nogolí winds through the rugged sierra landscape of San Luis Province in central Argentina, flowing through a region characterized by granite outcroppings, native vegetation, and the dramatic terrain of the Sierras de San Luis. This mountain stream originates in the elevated ranges and descends through valleys and canyon sections, creating a diverse range of water types including riffles, pools, and pocket water typical of Andean foothill rivers. The river is recognized as a notable freshwater fishery within San Luis Province, with its waters supporting native fish populations that have been documented by ichthyologists studying the region's aquatic biodiversity.