Río de San Miguel flows through the mountainous terrain of Córdoba, Argentina, at elevations ranging between 1,000 and 2,000 meters above sea level. Like the other rivers and streams of the Córdoba sierras, it is characterized by clear, cold water running between steep mountain slopes — conditions that make it a compelling destination for fly fishing enthusiasts. The river receives the waters of Río Tabaquillo, which joins it from its source down to their confluence, adding to the overall flow and character of the watershed. The clarity and temperature of the water reflect the high-altitude, freestone nature of these Andean foothill streams.