Fishing in Río Negro

Río Negro province spans a long diagonal of Argentine Patagonia, from the Andean foothills in the west all the way to the South Atlantic coast in the east.

That geography means the fishing doesn't fit a single description — you're looking at cold mountain rivers, glacial lakes, a broad steppe crossed by spring-fed streams, and a rugged Atlantic shoreline, all within the same provincial boundary.

The western Andes end of the province is where most visiting anglers focus.

Lago Nahuel Huapi and Lago Mascardi anchor a network of alpine lakes surrounded by forest, and the rivers that drain them — the Río Limay, Río Manso, and Río Manso Superior among them — carry the kind of clear, cold water that rainbow and brown trout thrive in.

The Río Limay is floatable; a half-day drift covers roughly 12 kilometres and puts you through varied water. Bariloche and El Bolsón are the practical bases for this corner of the province.

The season runs November through May, with dry fly fishing available throughout. Further south and slightly east, the Río Azul, Río Foyel, and Río Quenquemtreu are smaller mountain rivers worth knowing.

These are the streams that suit lightweight gear and dry flies — the kind of water where you wade rather than float, and where the fish aren't necessarily large but the setting does a lot of the work. Out on the steppe, the character shifts completely.

The Valcheta stream holds rainbow trout, and the Maquinchao basin carries both trout and silverside. These aren't destination waters for most visiting anglers, but for anyone crossing the province they're worth a stop.

The Embalse Ezequiel Ramos Mexía, formed by damming the Río Limay, is a large reservoir that extends the fishable corridor eastward.

The Río Negro itself — around 1,000 kilometres long and the largest river contained entirely within Argentina — runs the full width of the province from the Andes to the Atlantic.

The Atlantic coast adds a saltwater dimension that most Patagonia fishing itineraries skip entirely, with over 400 kilometres of shoreline fishable from shore or boat.

Fishing in Río Negro province requires a provincial licence issued by the provincial tourism and fishing authority; check with them directly for current season dates, rules, and any special permit requirements for specific waters, as these are updated each season.

The western lakes and rivers draw the crowds, and reasonably so. But the province is wide, and the water keeps going long after the mountains are behind you.