How the PRG North Program Works
Patagonia River Guides—often referred to simply as PRG—operates a guided Patagonia trout fishing program designed around mobility rather than a single fixed lodge stay. In Northern Patagonia this approach takes advantage of the river systems surrounding San Martín de los Andes and Junín de los Andes, where numerous productive trout rivers lie within practical reach of one another.
Key rivers in this region include the Chimehuín, Malleo, Aluminé, Collón Cura, and Limay, each offering slightly different water types and seasonal conditions. Instead of returning to the same stretch of river every day, guides review weather patterns, water levels, and insect activity before selecting the river most likely to fish well.
Lodging rotates between a small group of well-positioned estancias across the region, many of them working ranches. Each move brings a change in landscape and water, creating a program that follows the natural pace of Patagonia’s seasonal windows without feeling scripted.
PRG North – Guided Fishing Program Overview
The PRG North program can be summarized as follows:
- Region: San Martín de los Andes & Junín de los Andes, Neuquén
- Key Rivers: Chimehuín, Malleo, Aluminé, Collón Cura
- Fishing Style: Float and walk-and-wade trout fishing
- Program Structure: Multi-river itineraries across several estancia lodges
Fishing Private Estancias and Protected River Beats
Much of the riverbank across Northern Patagonia lies within traditional ranchlands known as estancias. These properties often maintain long stretches of river frontage where fishing access remains controlled and relatively quiet.
Patagonia River Guides works with several of these ranches, including estancias such as Tipiliuke, Arroyo Verde and Quemquemtreu, allowing anglers to fish waters rarely visited by the general public. These landscapes shape the atmosphere of the fishing week—wide pastures stretching toward the Andes, horses grazing near the riverbanks, and condors occasionally gliding high overhead.
Rivers of the San Martín and Junín de los Andes Region
Few areas of South America offer such a concentrated network of productive trout rivers. Within a short drive of San Martín and Junín de los Andes, several of Patagonia’s most recognizable fisheries flow through wide valleys framed by distant Andean ridges.
The Chimehuín River, flowing out of Lake Huechulafquen, is widely regarded as one of Argentina’s classic dry-fly rivers. Its steady current and well-defined runs create ideal conditions for presenting floating flies during hatch periods. Nearby, the Malleo River winds quietly through ranchland and forested foothills, where clear water and gravel runs reward careful presentations.
Larger rivers such as the Collón Cura expand the scale of the fishing. Wide valley floors, grassy banks, and long bends reveal miles of trout water where brown and rainbow trout occupy deeper currents. Together these rivers form a landscape defined by diversity, allowing anglers to experience multiple styles of trout fishing within a single region.
Drift Boat Fishing Patagonia’s Larger River Systems
Several of Northern Patagonia’s larger rivers lend themselves naturally to fishing from drift boats, a signature element of the PRG North program. These float sessions allow anglers to cover long sections of water while presenting flies along banks and deeper mid-channel currents where trout hold throughout the season.
On rivers such as the Collón Cura and sections of the Limay, the scale of the valley becomes especially apparent from the water. Gravel bars divide the current into seams and gentle runs, while distant hills frame the horizon. A day’s float may reveal miles of productive trout water, with guides pausing frequently to fish promising water along the way.
Fishing from drift boats allows anglers to explore water that would otherwise require long walks or difficult access from shore, while offering a relaxed way to take in the changing landscapes along the river.
Walk-and-Wade Fishing on Classic Patagonia Trout Rivers
While some of Northern Patagonia’s better-known rivers are covered by drift boat, others are best experienced on foot. The Malleo and upper Chimehuín are good examples, with steady flows, firm gravel bottoms, and the kind of water that invites a slower, more attentive pace.
The fishing here usually feels more measured than on the float sections. Days are spent covering runs, bends, and quieter holding water, especially when insect activity brings trout to the surface. These valleys have a more open feel, with grasslands, low willow lines, and the Andes often visible in the distance, giving this part of Patagonia a very distinct character.
Seasonal Dry-Fly Fishing Across Northern Patagonia
The trout season across Northern Patagonia generally runs from November through April, with fishing conditions evolving gradually as summer unfolds.
Early in the season, snowmelt keeps rivers cold and lively, with trout feeding actively during aquatic insect hatches. As summer progresses, terrestrial insects—particularly grasshoppers and beetles—become increasingly important, often bringing consistent dry-fly fishing to rivers such as the Malleo and Chimehuín.
By late season, cooler nights and changing light often trigger renewed feeding activity as trout prepare for winter.
Lakes and Tributaries of Northern Patagonia
Although rivers dominate the region’s reputation, several lakes and tributaries add further variety to the fishing week. Lakes such as Huechulafquen, Lolog, and Tromen sit high in the Andean foothills where clear water reflects volcanic slopes and forested ridges.
These waters can offer productive fishing when river conditions shift, and tributary streams feeding these lakes often provide quieter stretches of trout water away from the larger rivers.
Why Northern Patagonia Remains Patagonia’s Classic Trout Region
Around San Martín and Junín de los Andes, several major rivers flow across the same valley system, creating one of the most concentrated trout fishing landscapes in South America. It’s a established setup that gives consistent access to different water over the course of a week.
PRG also offers alternative programs in other parts of Patagonia, including a multi-day float experience through their PRG Unplugged program, as well as a separate Southern Patagonia trout program based around the rivers of Chubut Province.
For anglers seeking variety across Patagonia’s most established trout rivers, the Northern Patagonia program with PRG delivers a week shaped by mobility, river knowledge, and classic dry-fly water.
To learn more about the fishing and express an interest, message Patagonia River Guides.