Río Negro is a stream flowing through the Los Lagos region of Chile, a part of the country renowned for its dramatic Patagonian landscapes, pristine watersheds, and world-class trout fishing. The Los Lagos region encompasses a network of rivers, streams, and lakes fed by Andean snowmelt and rainfall, producing cold, clear waters that support healthy populations of introduced salmonid species. Río Negro sits within this broader ecosystem, offering anglers access to the kind of wild, uncrowded fishing that has made Chilean Patagonia a destination of international repute.