
Photos: Pablo Bruno D'Amico (PabloBD) from Argentina (CC BY-SA 2.0) — via Wikimedia Commons
A snowmelt river in southern Mendoza, born in the cordillera and cutting through the famous Atuel Canyon, with rainbow and brown trout in its upper reach. Cold, lively water in a mountain landscape.
The trout are worked with fly and spinning in the cordillera stretch, from spring to autumn with the provincial permit. The river also feeds the Valle Grande and El Nihuil reservoirs. San Rafael is the base for touring the canyon and its chain of dams.
captura y devolución obligatoria del 1 may al 28 jun 2026; veda en tributarios sensibles.
Base data: OpenStreetMap (ODbL)
At Atuel River (Mendoza) you can catch Brown trout, Rainbow trout, assorted river fish. Allowed styles: Fly, Spinning, Shore, River.
Access via Route 173 from San Rafael.
Mendoza provincial permit.
captura y devolución obligatoria del 1 may al 28 jun 2026; veda en tributarios sensibles.
| Season | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | IDX | NOW |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Brown trout. PEAK MAR–APR | 15 | Off | ||||||||||||
| Rainbow trout. PEAK MAR–APR | 15 | Off |
The number (0 to 100) sums up how likely the species is to be active here this month: it weighs the season, recent catch reports and, where there is a river gauge, the water level.
Gear is chosen according to the environment and the expected size. A versatile, concrete setup:
Spinning (general use, rivers and lakes):
Fly fishing:
Recommended accessories: rubber net (less harm to the fish for release), forceps for removing hooks, barbless hooks, and waders for safe wading in cold water.
The gear is matched to the setting and the size of trout you are after, but these setups cover most situations in Argentina:
Spinning (general use, trout of 1 to 3 kg):
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In August the species of Atuel River are past their best moment. Off season does not mean there is a closed season.
In Atuel River it is worth going when its main species bite: Brown trout (NOV–APR); Rainbow trout (NOV–APR).
In Atuel River you can fish Fly, Spinning, Shore, River.
Yes: PESQA lists 2 guides working Atuel River, among them Pesca Mendoza Excursiones, Los Reyunos.
Near Atuel River PESQA lists 14 places to stay: Cabañas Las Escondidas, Cabañas San José del Atuel, Cabañas Las Rocas.
Around Atuel River there are 9 marinas and tackle shops: Ale Pesca, Casa de Pesca San Rafael, Nihuil Rumbo.
Atuel River is in the province of Mendoza.
Fly:
For trophy specimens (5-10+ kg at the Strobel): step up the power—medium/medium-heavy spinning with 15-20 lb braid and a robust fluoro leader, or a 7/8 fly outfit—because these are fish with strength and runs far superior to the average trout.
In every case: a well-adjusted drag, sharp hooks (barbless if you are going to release), and a rubber net to handle the fish with the least possible harm.