San Juan River
New Mexico · Northwestern New Mexico
Brown TroutRainbow Trout
Top 5 Fishing Locations on San Juan River
Quality Waters Section
The San Juan's designated Quality Waters just below Navajo Dam is arguably the best dry fly fishery in the Southwest. Wild rainbow and brown trout require microscopic midge and small baetis imitations in this crystal-clear cold tailwater. Fish averaging 18-22 inches with many exceeding 24 inches make this world-class fishing.
💧 Ideal flow: 500–1,500 CFS. The Quality Waters section below Navajo Dam is the crown jewel — consistent cold tailwater releases year-round.
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Texas Hole
Texas Hole on the San Juan is one of the most famous trout fishing locations in New Mexico — a deep run holding enormous fish that can be sight-fished from the bank. Massive rainbow trout up to 28 inches have been caught in Texas Hole. The concentration of large fish and technical nature of the fishing make this legendary.
💧 Ideal flow: 400–1,200 CFS. Texas Hole fishes best at moderate flows — midge and scud patterns work at any level but wade fishing is best below 800 CFS.
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Cable Hole
Cable Hole provides consistent access to San Juan fishing with excellent populations of large brown and rainbow trout. Fish in this hole are especially large with multiple trophy specimens caught annually. Precise midge presentations in sizes 22-28 are essential for success.
💧 Ideal flow: 500–1,500 CFS. Cable Hole section fishes well at moderate flows — large rainbows hold in the deep runs year-round.
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Alcove Hole
The Alcove provides bank fishing access to excellent San Juan tailwater with large trout visible in the clear water. Fish respond to specific midge pupal patterns during heavy hatch activity. The combination of sight fishing and large trout makes this a unique technical challenge.
💧 Ideal flow: 400–1,200 CFS. Alcove Hole area fishes best at stable consistent flows from Navajo Dam.
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Simon Canyon
Below the quality waters in Simon Canyon the San Juan transitions to reservation land requiring tribal fishing permits. Brown trout dominate the lower sections with fish benefiting from less pressure. The canyon setting becomes increasingly dramatic downstream from the quality waters section.
💧 Ideal flow: 500–1,500 CFS. Simon Canyon is the most remote accessible section — fishes best at moderate flows with less pressure than the upper beats.
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Guide's Gear Picks
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About San Juan River Fishing
The San Juan River below Navajo Dam is a world-renowned blue ribbon tailwater that produces some of the highest trout densities in North America, with crystal-clear cold water that flows year-round from the dam's deep releases. This southwestern gem is legendary for the Texas Hole, a massive pool that consistently holds trophy-caliber rainbows and browns, making it one of the most iconic and productive stretches in the entire region.
Best Time to Fish San Juan River
The San Juan's exceptional winter fishery rivals its summer productivity, as stable tailwater temperatures keep trout actively feeding when other rivers shut down—midge hatches are the dominant food source throughout the year, with peaks occurring in late morning hours even in December and January. Spring and fall bring increased scud activity that keeps fish feeding aggressively, while summer months see the midge action continue relentlessly, making San Juan one of the few waters where seasonal variation matters less than understanding the daily midge and scud cycles.
Species
Rainbow trout dominate the San Juan with aggressive, consistent feeders that have adapted to a diet of midges and scuds, resulting in stocky, well-conditioned fish that frequently exceed 16 inches and respond eagerly to small nymphs dead-drifted in the current. Brown trout inhabit the deeper pools and slower-moving sections, particularly in the Texas Hole, where they grow larger and more selective than their rainbow counterparts, requiring precise presentations and a deeper understanding of their scud-feeding patterns.
Access & Regulations
Always check the current New Mexico fishing regulations before heading out. Regulations on San Juan River may include special catch-and-release sections, artificial-only stretches, and seasonal closures. A valid New Mexico fishing license is required.
Live River Data
This page pulls real-time CFS and gauge height data from the USGS National Water Information System, refreshed every 15–60 minutes. You're seeing the same streamflow information that local guides and outfitters check before heading to the water.