The Chimehuin River is the crown jewel of Tres Ríos Casa de Campo. The smallest of the three rivers on the ranch, it is truly a dry fly fisherman’s paradise. Large overhanging willows, rock gardens, and slow eddies provide excellent cover for the numerous rainbow and brown trout that make the Chimehuin their home. Early in the season when the waters are still high, the numerous side channels are full of fish and offer easy wading access. As the season progresses and the water drops, the fish move out to the main river channel and can be accessed on foot or by drift boat. Prolific mayfly, caddis, and inchworm hatches throughout the season afford guests with excellent opportunities to sight-cast to rising fish. Larger flies including hoppers and Chernobyl Ants can draw violent strikes from big fish during the warmer hours of the day.
The Aluminé and Collón Curá Rivers are big freestone streams lined with large willows, beautiful high banks, and striking rock formations. Although they provide great hatches throughout the season, these two rivers are best known for their red-hot summertime terrestrial fishing. Large hoppers, beetles, and ants fished close to the banks bring explosive strikes as they float atop the gin-clear water. During the fall, large brown trout migrate up the Collón Curá to spawn. This concentration of fat and aggressive fish provides guests with the opportunity to catch the trout of a lifetime.