Fly Fishing in Northern New Mexico: A Guide to the Rio Grande, Rio Costilla, and Cimarron River

by | Jun 9, 2025 | NM Trout Fishing | 0 comments

Fly fishing in Northern New Mexico is more than just a pastime — it’s a deeply rooted tradition immersed in the breathtaking landscapes of the Southwest. With its pristine alpine rivers, rugged canyons, and clear mountain streams, Northern New Mexico is a top destination for anglers seeking solitude, beauty, and the thrill of the catch. Whether you’re casting into the mighty Rio Grande, the hidden gem of the Rio Costilla, or the trout-rich Cimarron River, each body of water offers its own unique charm and challenges.

In this comprehensive guide to fly fishing in Northern New Mexico, we explore the prime locations, seasonal tips, gear recommendations, and conservation practices every angler should know.


Why Fly Fishing in Northern New Mexico Is Special

Northern New Mexico is renowned for its diverse ecosystems that support robust populations of trout, including rainbow, brown, brook, and the native Rio Grande cutthroat. From high-altitude wilderness streams to canyon rivers with dramatic vistas, fly fishing here is as much about the environment as it is about the sport.

With elevations ranging from 6,000 to over 12,000 feet, the region’s waters are fed by snowmelt, making them cold and clean year-round. This not only makes for ideal trout habitat but also contributes to the region’s serenity and beauty.


The Rio Grande: Iconic Waters with Epic Scenery

Overview

The Rio Grande is perhaps the most iconic river for fly fishing in Northern New Mexico. Carving its way through the Rio Grande Gorge near Taos, this river offers anglers a wild and scenic experience. The gorge’s steep volcanic walls make access challenging in some areas, but the effort is rewarded with excellent fishing and unforgettable views.

Fish Species

  • Brown trout (abundant)

  • Rainbow trout

  • Rio Grande cutthroat trout (in headwaters)

  • Pike (in lower stretches)

Best Access Points

  • John Dunn Bridge: Popular with locals, this spot offers good access and space to cast.

  • Wild Rivers Recreation Area: A remote but rewarding section of the Rio Grande above the confluence with the Red River.

  • Taos Junction Bridge: Accessible and scenic, great for a day trip.

Best Time to Fish

  • Spring (April to June): Post-runoff, the river clears and becomes highly fishable.

  • Fall (September to November): Lower water levels and cool temperatures improve trout activity.

Tips for Success

  • Use weighted nymphs in deeper pools.

  • Hopper-dropper setups work well in late summer.

  • Be prepared to hike in for the best spots.


The Rio Costilla: A Hidden Gem in the Valle Vidal

Overview

Tucked away in the remote Valle Vidal Unit of the Carson National Forest, the Rio Costilla is one of the best-kept secrets for fly fishing in Northern New Mexico. Known for its pristine surroundings and native Rio Grande cutthroat trout, the river offers a rare opportunity to fish for a species that is both beautiful and historically significant.

Fish Species

  • Rio Grande cutthroat trout (primary)

  • Some brook trout

Best Access Points

  • Costilla Creek Campground: Located along a scenic gravel road with easy access to the river.

  • Beyond the locked gate (summer access): Offers solitude and excellent fishing, accessible via hiking or horseback.

Best Time to Fish

  • Mid-June to early September: The river is subject to seasonal closures and water releases, so summer is optimal.

Tips for Success

  • Small dry flies like elk hair caddis and Adams are effective.

  • Bring polarized sunglasses to spot fish in the clear waters.

  • Check road conditions before heading out, as the area is remote and can be difficult to access after rain.


The Cimarron River: Tailwater Perfection Below Eagle Nest Lake

Overview

Flowing east from Eagle Nest Lake, the Cimarron River is a prime tailwater fishery, ideal for beginners and seasoned anglers alike. Its manageable size, plentiful trout, and well-maintained access make it one of the best rivers for fly fishing in Northern New Mexico.

Fish Species

  • Brown trout (dominant)

  • Rainbow trout

  • Rio Grande cutthroat trout (occasionally stocked)

Best Access Points

  • Cimarron Canyon State Park: With campgrounds, trails, and picnic areas, it offers easy access to many fishing holes.

  • Gravel Pit Lakes: Just below Eagle Nest Dam, these are regularly stocked.

Best Time to Fish

  • Late spring through fall: The tailwater remains cold and productive even in summer.

Tips for Success

  • Use terrestrial patterns like ants and beetles.

  • Midges and nymphs work well in deeper runs.

  • Watch for mayfly hatches on overcast days.


Gear and Tackle Recommendations

Rod and Reel

  • Rod: 8’6″ to 9′ 4- or 5-weight rod for versatility.

  • Reel: A reliable disc-drag reel with a large arbor for faster line retrieval.

Flies to Pack

  • Elk Hair Caddis

  • Parachute Adams

  • Pheasant Tail Nymphs

  • Copper Johns

  • Stimulators

  • Woolly Buggers

Waders and Boots

  • Breathable chest waders for colder months.

  • Wet wading shoes or sandals for summer.


Lodging and Amenities

Taos

A perfect base for exploring the Rio Grande, Taos offers a variety of accommodations from rustic lodges to boutique hotels. Don’t miss a visit to Taos Fly Shop for local advice and gear.

Red River

A charming mountain town ideal for those fishing the Rio Costilla or upper Rio Grande. Offers fly shops, guided tours, and family-friendly activities.

Eagle Nest and Cimarron

These towns provide easy access to the Cimarron River, with RV parks, campgrounds, and cabin rentals.


Conservation and Ethical Angling

As stewards of these incredible rivers, it’s crucial for anglers to practice ethical and sustainable fishing techniques:

  • Catch and release whenever possible.

  • Use barbless hooks to minimize harm.

  • Pack out all trash and avoid disturbing wildlife.

  • Respect private property and honor posted signs.

Conservation organizations such as Trout Unlimited and the New Mexico Department of Game and Fish offer opportunities to get involved in restoration and monitoring efforts.


Guided Fly Fishing in Northern New Mexico

If you’re new to the area or want to maximize your time on the water, hiring a local guide can make a big difference. Many guides offer half-day, full-day, and multi-day trips with all gear provided.

Recommended Outfitters

  • Taos Fly Shop (Taos)

  • Red River Angler & Sport (Red River)

  • High Desert Angler (Santa Fe)

  • Los Pinos Fly Shop (Albuquerque)


Seasonal Considerations and Weather

  • Spring: Snowmelt can raise river levels, making some spots tough to fish, but pre-runoff (March-April) can be excellent.

  • Summer: Best time for dry fly fishing; watch for afternoon thunderstorms.

  • Fall: Cooler temperatures and lower flows make for ideal conditions.

  • Winter: Limited opportunities due to freezing temps, but some tailwaters like the San Juan (south of this region) remain viable.


Final Thoughts

Fly fishing in Northern New Mexico is a journey into one of the most scenic and soulful regions of the American West. Whether you’re stalking native cutthroat in the headwaters of the Rio Costilla, matching the hatch in the riffles of the Cimarron River, or braving the bold currents of the Rio Grande, this region delivers an unforgettable experience.

The combination of rugged wilderness, thriving trout populations, and cultural richness make Northern New Mexico not just a fly fishing destination, but a place of reflection and connection. So grab your rod, tie on a fly, and step into the current — the rivers of Northern New Mexico are calling.


Tags: fly fishing in northern new mexico, Rio Grande fly fishing, Cimarron River fly fishing, Rio Costilla fly fishing, New Mexico fly fishing guide, trout fishing NM, best rivers for fly fishing New Mexico, fly fishing trips Taos

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