TRES RIOS CASA DE CAMPO
SAN MARTÍN DE LOS ANDES

THREE CELEBRATED RIVERS

THE MEETING OF THREE GREAT PATAGONIAN RIVERS

Tres Rios Casa de Campo occupies an exceptional position in northern Patagonia’s Collón Curá Valley, where the Chimehuín and Aluminé meet to form the Collón Curá. The lodge accommodates a group of six to eight guests, with close access to all three rivers, four established float programs and approximately nine miles of private water on the lower Chimehuín.

For anglers familiar with New Zealand, the attraction will be immediately recognizable. Clear water encourages visual fishing, the trout are beautifully conditioned, and careful presentation is rewarded. Tres Rios adds the scale and variety of Patagonia, combining drift-boat fishing and private wading water across the Chimehuín, Aluminé and Collón Curá – all from one intimate base.

This is fishing within a broader experience of Argentina: clear rivers, strong wild trout, open steppe, snowcapped volcanoes, working ranches and the lakes and forests surrounding San Martín de los Andes.

Tres Rios operates throughout the Patagonia trout season. For the strongest combination of favorable water temperatures, excellent fishing and a quieter regional experience, Isolation Outfitters recommends visiting in November/December or March/April, however the guides are well-equipped to cater to your needs throughout the season.

2027 LODGE RATE

Independent lodge stays are US$1,200 per person per night in the March high season, based on double occupancy. This makes Tres Rios Casa de Campo well suited to a three- or four-night stay before continuing south to Chubut.

We welcome enquires for the 2027/28 season. This high quality lodge is in demand so early reservations are encouraged.

HOSTED TRIP: MARCH 03-09, 2027

Isolation Outfitters is planning a six-night hosted week at Tres Rios in March 2027, with five guided fishing days. Please enquire for details.

The proposed six night package is US$7,200 per angler, based on double occupancy and two anglers per guide and boat. Limited to 6 anglers across three double occupancy rooms and boats. Complete trip details will be provided to interested anglers.

THE CHIMEHUÍN, ALUMINÉ & COLLÓN CURÁ

THE FISHING

Tres Rios gives your group direct access to three distinct northern Patagonia rivers. Four established float programs, approximately nine miles of private lower Chimehuín water, feeder creeks and side channels allow the guides to shape each day around flows, temperature, hatches and the priorities of the anglers.

THE CHIMEHUÍN

Clear and beautifully structured, the lower Chimehuín offers riffles, glides, channels and productive banks where accurate presentation can be rewarded by strong wild brown and rainbow trout. Depending on the beat, a day can combine floating with deliberate walk-and-wade fishing.

THE ALUMINÉ

The Aluminé brings classic Patagonian scale, with long drifts, varied currents and productive banks. Dry flies, dry-dropper rigs, nymphs and streamers all have their place, while the boat makes it possible to cover water without rushing the fishing.

THE COLLÓN CURÁ

Formed by the meeting of the Chimehuín and Aluminé, the Collón Curá is a broad, powerful river. Islands, side channels, riffles and sweeping banks create varied targets, with opportunities to fish from both boat and bank.

HOW THE FISHING WORKS

The three rivers are not variations on one fishery. Each has its own scale, structure and character. Guides can move between them and supplement the four floats with private wading water, feeder creeks and side channels.

Mayflies, caddis and larger terrestrials can produce excellent dry-fly fishing. Dry-dropper rigs are highly effective, while nymphs and streamers remain important when conditions require them. The lodge can provide fishing equipment, although experienced anglers may prefer familiar rods, reels and lines.

A TYPICAL DAY

After breakfast, guests leave with their guides for a full day on the Chimehuín, Aluminé or Collón Curá. The program may involve a long drift, float-to-wade fishing or a full day on foot if you prefer. Water, weather, insect activity and angler preference determine the route, rather than a fixed itinerary.

WHEN TO GO

Tres Rios Casa de Campo operates throughout the Patagonia trout season. Isolation Outfitters particularly recommends November and December, before the region enters its busiest vacation period, and March/April, when cooler nights and lighter traffic can produce clear, settled conditions.

Trips can be arranged at other times, and the rivers offer new challenges and opportunities as the fishing season progresses.

THE LODGE

Tres Rios Casa de Campo is a welcoming country lodge approximately 45 minutes from San Martín de los Andes. It generally hosts a group of six to eight guests, creating an unhurried atmosphere and a fishing program shaped around that party.

The main ranch house has three spacious guest rooms with private bathrooms, a generous living area and an intimate dining room finished with a hand-distressed bar and exposed local-hardwood rafters. An adjacent stone house provides private accommodation for two additional guests.

FOOD, WINE AND SUSTAINABILITY

Hospitality centers on the dining table. Gourmet meals showcase ingredients grown and raised in the Collón Curá Valley, accompanied by premium Argentine wines and traditional Patagonian asados.

Local stone construction, solar and wind power, fresh produce and ranch-raised ingredients connect the stay closely to the valley without compromising comfort.

BEYOND THE THREE RIVERS

A wider northern Patagonia itinerary can also incorporate the Malleo, Quilquihue, Filo Hua Hum, Traful and Limay. Some are best approached as day trips or lodge combinations; Isolation Outfitters can build the most rewarding program around the time available.

TRES RIOS AT A GLANCE

Collón Curá Valley, Neuquén Province, Argentina.

San Martín de los Andes Airport (Chapelco, CPC), approximately 45 minutes from the lodge.

The full Patagonia trout season.

November/December and March/April

Flexible lodge stays; three or four nights work well within a wider Patagonia itinerary, or stay a week.

Groups up to six to eight guests including non-angling guests.

Two anglers per guide and boat.

The Chimehuín, Aluminé and Collón Curá, including approximately nine miles of private lower Chimehuín water.

Four float programs, float-to-wade fishing and private walk-and-wade water.

Wild brown and rainbow trout.

Three main-house rooms with private bathrooms and a separate stone house for two additional guests.

Peak rate: US$1,200 per person per night, based on double occupancy and two anglers per guide and boat.

WHY FISH TRES RIOS?

Fishing at Tres Rios changes throughout the season. Each month brings its own combination of hatches, terrestrials, water temperatures and river levels. The annual minnow run adds a distinctive period of activity, concentrating trout around a rich seasonal food source and creating compelling streamer opportunities.

The guides are finely attuned to this moving pattern. They read the Chimehuín, Aluminé and Collón Curá day by day, matching the water, timing and technique to current conditions. With four float programs and private walk-and-wade water close at hand, less time is spent travelling and anglers can be in the right place at the optimal time.

The result is a responsive private-group stay with no fixed daily formula. Tres Rios works equally well as a focused short visit or the northern beginning of a broader Patagonia journey.

PLAN YOUR TRIP TO TRES RIOS CASA DE CAMPO

TRIP ENQUIRIES

Contact Isolation Outfitters with your preferred dates, group size and room requirements. Tres Rios is in high demand so early planning is worthwhile for peak season stays. We can confirm remaining 2027 availability and build your lodge stay into a wider Argentina itinerary.

GETTING THERE

Chapelco Airport (CPC), near San Martín de los Andes, is approximately 45 minutes from the lodge by road. Isolation Outfitters can coordinate domestic flights, road transfers and accommodation before or after fishing, including onward travel to our other partner lodges further south near Esquel.

NON-ANGLING PARTNERS

Tres Rios is well suited to mixed groups. Subject to local availability, days can include horseback riding, hiking in Lanín National Park, lakes and volcanic landscapes, scenic flights, swimming, gaucho traditions and time in San Martín de los Andes. Programs can be shaped around each guest’s interests and pace.

CURRENT LODGE RATE

The current lodge rate is US$1,050 per person per night outside peak season and US$1,200 at peak (Dec 10 – May 15), based on double occupancy and two anglers sharing a guide and boat. Tres Rios is particularly well suited to a three- or four-night stay before continuing south to Chubut, or stay for a week if availability allows. Ask Isolation Outfitters about 2027/28 dates, single occupancy and private guide arrangements.

BOOKING AND PAYMENT

Once dates, room arrangements and fishing plans are agreed, Isolation Outfitters will provide the formal itinerary, current inclusions and exclusions, invoice and payment schedule. A reservation is confirmed when the required deposit has been received.

TRAVEL INSURANCE

Comprehensive travel insurance covering trip cancellation, interruption and medical evacuation is strongly recommended for every guest. Travel with your policy certificate and emergency-assistance details readily available.

FOR BOOKINGS & ENQUIRES

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Email: hi@isolationoutfitters.com