
Fly Fishing the San Juan River
Below Navajo Dam
World-renowned fishing, tailored to you.
The San Juan River below Navajo Dam in New Mexico is one of the most iconic tailwater fisheries in the world. Known for its consistent flows, abundant insect hatches, and trophy-sized trout, this stretch of river offers year-round fly fishing opportunities for anglers of all skill levels. At Durango Fly Fishing, we’re excited to guide you through the experience, whether you're a seasoned angler or a beginner looking to land your first fish.
Why The San Juan River is Unique
The San Juan River's cool, nutrient-rich waters create the perfect environment for trout to thrive. Brown and rainbow trout dominate this section, with many fish averaging 16-20 inches and some exceeding 25 inches.
With a consistent flow rate controlled by Navajo Dam, the river provides stable fishing conditions throughout the year. Anglers can expect gin-clear waters during low-flow seasons and slightly off-colored water during higher flows, which can improve fishing conditions by making fish less wary.

San Juan Hatch Chart
Key Aquatic Insects:
The San Juan River is home to an abundance of aquatic insects, making it a fly angler’s dream:
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Midges (year-round)
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Baetis (Blue-Winged Olives) (spring-fall)
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Leeches
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Scuds
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Annelids
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Caddisflies (Downriver)
Fly Recommendations
Midges (Sizes 18-26):
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Zebra Midge (red, black)
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Miracle Larvae (red, olive, brown)
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Disco Midge
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"The Red Midge"
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Neon Nightmare (Orange, Red, Chartreuse)
Baetis (Sizes 20-28):
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CDC RS2 (gray, olive)
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Foam Wing Emerger
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Thread Body Baetis
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Mercury Pheasant Tail
Other Effective Patterns:
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San Juan Worm (especially during higher flows)
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Egg patterns (great for fall and early spring)
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Mop Flies (chartreuse and cream colored)
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Streamers like Woolly Buggers, rainbow and brown trout patterns, articulated flies and jigs for targeting larger fish
Where to Fish
on the San Juan River?

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Texas Hole (Quality Water)
Texas Hole is the premier boat ramp and access point to the quality waters of the San Juan River, making it the most popular destination for anglers. This prime location offers excellent opportunities for both floating and wade fishing along its accessible banks, where anglers can target an abundance of trophy-sized fish. Whether you’re casting upstream or downstream, Texas Hole provides a versatile fishing experience with easy wade access above the ramp, ensuring that every fishing expedition is both productive and unforgettable.
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B.O.R. (Quality Water)
Located closest to the dam, B.O.R. is renowned for producing some of the largest fish on the San Juan River. With its steep, challenging approach, this access point rewards anglers with impressive trophy opportunities and a dynamic fishing experience. The waters here boast a bounty of smaller aquatic insects and larvae—including midges, San Juan worms, leeches, and scuds—making it a prime spot for finesse fly presentations. Navigating the tricky, slippery wade zones adds an extra level of adventure, while anglers can choose to venture all the way to Cable Hole—the furthest, and most exhilarating run—or stay in the cooler water closer to the dam for a different challenge.
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Munoz (Quality Water)
Home to the renowned “Baetis Bend” run, Munoz is a summer favorite for dry fly fishing on the San Juan River. This popular spot features energetic riffles that produce mayflies and blue-wing olives, while the calm stretches with slow ledges and drop-offs create the perfect setting for delicate dry fly presentations using midges in the morning. In winter, the area transforms into highly productive leech water, offering a different, yet equally rewarding, fishing challenge. With a well-maintained parking lot and vaulted toilets available, Munoz is as convenient as it is scenic, making it a must-visit access point for anglers year-round.
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Simon Canyon ((Quality Water) Recreation Area – BLM)
Situated on the west side of the river outside the state park, Simon Canyon offers free access through a small recreation area managed by the BLM. This quieter alternative features dispersed camping available on a first-come, first-served basis, as well as scenic hikes throughout the area. Anglers can enjoy excellent riffle fishing, with afternoons bringing an abundance of blue wings and other aquatic insects that enhance the fishing experience on the San Juan River.
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Simon Pointe (Quality Water)
Simon Pointe is a premier wade-only access point located across from Simon Canyon, offering anglers a more secluded experience than the busier Texas Hole or B.O.R. With its consistently moving water, this spot is renowned for its healthy population of brown trout that favor feeding on baetis and midges—especially during the fast-flowing afternoons. The area features vaulted toilets for added convenience, making it not only a great fishing destination but also a comfortable one. Whether you're wading along the banks or standing in the water, Simon Pointe provides an ideal blend of quality water conditions, reliable trout action, and a less crowded environment for a more relaxed fishing experience.
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Crusher Hole (Baitwater)
Crusher Hole functions as the transition point between quality water and bait-water. Serving as the takeout for quality waters and a put-in for floating into the bait-water, this access point is unique. Anglers can enjoy wade fishing along the shoreline—although note that fishing isn’t permitted from the boat ramp here. While the fish caught in this section are generally smaller than those found in the quality waters, typically in the 12–14 inch range, they’re still a solid catch with the occasional big brown making an appearance. Also, be prepared for plenty of bait fishermen around this area, as it’s a popular spot for anglers targeting the bait-water.
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Pumphouse (Baitwater)
Located in the bait-water section of the San Juan, the Pumphouse offers a convenient wade-access area complete with vaulted toilets. This spot is characterized by a mix of rocky riffles and a couple of deeper runs, providing varied fishing conditions that appeal to a range of techniques. Although the fish here tend to be smaller than those in the quality waters, typically 12–14 inches, they are abundant—making this a fantastic destination for dinner fishing. Plus, it’s generally less busy than Crusher Hole, offering a more relaxed atmosphere while still delivering plenty of action on the water.
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Lower River
The lower section of the San Juan River offers a unique fishing experience with both the put-in and take-out located on BLM land. Unlike the tailwater below the dam, this section doesn’t follow the same fishing patterns and instead features seasonal flows with a minimum of around 500 cfs. Anglers come here for the chance to target hoppers and streamers, as well as to enjoy the presence of brown trout, making it a distinct and rewarding stretch of water.

Rigs and Techniques
Nymphing
The most effective technique on the San Juan River is nymphing. Use a two-fly rig with the lead fly being an attractor pattern, such as a San Juan Worm, and the dropper being a small midge or Baetis pattern. Adjust the depth of your rig with split shot and a strike indicator to ensure the flies drift near the bottom where fish are feeding.
Dry Fly Fishing
While not always productive, dry fly fishing can be incredible during midge and Baetis hatches, not to mention the fabled "Ant Fall". Use small Parachute Adams, Griffith’s Gnats, or Sparkle Duns to match the hatch. Ants, being the most prolific bug in the world, are never a bad idea.
Streamer Fishing
Streamers can be particularly effective during overcast days or higher flows. Use a sink-tip line or add weight to your leader to get the fly down. Stripping patterns like Woolly Buggers, rainbow and brown trout patterns, or articulated streamers can trigger aggressive strikes from larger fish.
Seasonal Considerations

Winter (November - February):
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Conditions: Low water, clear visibility, cold weather.
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Bugs: Midges dominate.
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Tips: Focus on deeper runs and slower water. Layer up with insulated clothing, gloves, and waterproof gear.
Spring (March - May):
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Conditions: Rising water levels as runoff begins.
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Bugs: Midges and Baetis hatches.
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Tips: Transition to longer leaders and smaller flies as fish begin to feed actively.
Summer (June - August):
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Conditions: Stable flows, warm temperatures.
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Bugs: Caddisflies, midges, and terrestrials like ants and hoppers.
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Tips: Fish early mornings and evenings to avoid mid-day heat. Wear lightweight, breathable clothing.
Fall (September - October):
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Conditions: Lower flows and cooling water temperatures.
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Bugs: Baetis and midges.
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Tips: This is prime time for sight fishing. Use smaller tippets (6x-7x) and delicate presentations.
San Juan River Navajo Dam CFS
The chart above displays the current flow on the San Juan River below Navajo Dam in cubic feet per second (CFS). Typically, the dam maintains a minimum release of around 300 CFS to support water quality and aquatic habitat, though actual flows can vary with seasonal conditions and management decisions. This real-time data offers valuable insight into river conditions for anglers and boaters looking to understand how best to fish the Juan.

Rods and Reels
A softer, slower-action rod is preferred during normal water conditions to present delicate flies and protect light tippets. During high water, a faster-action rod is ideal for handling heavier and longer rigs. Bring a reel with a smooth drag system and weight-matched floating line.
1. Orvis H3F 4 wt (10′)
A 10‑foot, 4‑wt rod designed for delicate presentations with extra line pickup—ideal for the subtle, precise presentations needed on the San Juan.
Link: Orvis Fly Rods – Helios F
2. Orvis H3F 5 wt (9′)
A 9‑foot, 5‑wt model that provides a bit more backbone for windy conditions or slightly larger flies while still retaining a sensitive tip.
Link: Orvis Fly Rods – Helios F
3. Redington Classic Trout Fly Rod (4–5 wt)
A classic, slow‑action rod crafted for fine dry fly presentations. Its gentle flex and forgiving nature make it a great match for the clear, technical waters of the San Juan.
Link: Redington Classic Trout Fly Rod
4. G‑Loomis NRX 4 wt Trout Fly Rod
The NRX 4 wt is engineered with exceptional sensitivity and a balanced, medium–slow action that works well for subtle dry‐fly presentations in clear, tight water. Its design allows for smooth energy transfer, making it easier to detect delicate strikes and land light presentations. The gentle flex helps in executing precise casts in technical conditions, ideal for the San Juan’s environment.
Link: Shop Duranglers | G‑Loomis Fly Rods

Guided Trips with Durango Fly Fishing
When you book a guided trip with Durango Fly Fishing, we provide everything you need for a successful day on the water, including fly rods, reels, and terminal tackle. All you need to bring are your waders and boots if you're wading, and a valid New Mexico fishing license.We’ll take care of lunch, snacks, and beverages, ensuring you have the energy to focus on fishing. Whether you choose a full-day float or wade trip, our experienced guides will tailor the experience to your skill level and goals.
Ready to experience the magic of the San Juan River? Contact Durango Fly Fishing today to book your trip and create memories that will last a lifetime.