Río Percey is a freestone stream flowing through the Chubut province of Argentine Patagonia, originating from the region behind Los Alerces National Park near Esquel. The river travels approximately 30 miles before joining the Río Corintos, and together these two streams ultimately flow into the Río Grande. Along its course, the Percey winds through some of the most spectacular scenery in Patagonia, alternating between secluded canyon stretches and willow-lined cut banks that give the river a diverse and engaging character. Its relatively remote nature means anglers can enjoy miles and miles of water with a genuine sense of solitude, making it a rewarding destination for those who love to walk and explore.