Quality Waters of the San Juan River Are World-Class
Sensational trout fishing is experienced virtually the entire length of the San Juan River in northern New Mexico, however on one particular stretch, a 4.5 mile expanse located immediately below Navajo Dam, the river has earned world-class “Quality Waters” status due to its extraordinarily ideal year-round temperatures and singular riparian habitat.
In fact, studies have shown the Quality Waters of the San Juan River teem with an estimated 80,000 rainbow, brown and cutthroat trout that average 17 inches in length, with a huge proportion exceeding 20 inches. Local fishermen and women call them “lunkers,” with many regarded as state and national records that are released back into the river’s crystal-clear depths.
The first quarter mile of the river, immediately after the dam, is designated as a Catch & Release area. All hooks must have barbs removed, flies and lures must be artificial, and every fish must be returned to the river regardless of size. After that and for the next four miles, fishing still mandates artificial flies and lures with barbless hooks, but regulations allow a one-trout-limit… and only if the fish exceeds 20 inches.
As a result of its celebrity, the Quality Waters of the San Juan attract a sizable number of intrepid anglers, especially on weekends. Peaceful, all-by-yourself solitude is a rare privilege; however that’s a small price to pay when the rewards are easy access and hours upon hours of successful fly-fishing for trophy trout.
Below Navajo Dam, the cascade quickly expands into a verdant, low- gradient area measuring over 100 feet wide, punctuated by shallow canyons, scattered vegetation and deep runs. Flows range from 250 cubic feet per second (CFS) to 5,000 CFS, depending on mountain snowpack and reservoir conditions.
To fully appreciate and experience the Quality Waters’ bounty, the Four Corners area offers an impressive list of experienced fly-fishing guide services. Both wade and float trips are available. Peak season is from June to October, leaving the waters much more open and peaceful during the cooler months of November to March.
Additionally, wheelchair-accessible fishing facilities are available along the San Juan River, including four handicap fishing access ramps.





