Where to Find and How to Catch Musky on the Fly in Colorado: Best Spots

For fly anglers seeking the thrill of catching Colorado’s apex predator, the Tiger Muskie, there are several prime locations across the state. Muskie, known for their elusive nature and aggressive strikes, can be found in specific lakes and reservoirs thanks to stocking efforts by Colorado Parks and Wildlife. Though non-native, these hybrid fish (a cross between Northern Pike and Muskellunge) have been introduced primarily to control sucker populations, creating a unique opportunity for fly fishers.

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Best Locations for Musky Fly Fishing in Colorado

1. Lower Big Creek Lake
   Long known as one of Colorado’s premier tiger muskie waters, Lower Big Creek occasionally produces fish approaching 40 pounds—a size near the state record. These “state-record class” fish are rare and impressive, making this lake a top target for serious anglers.
   
   
2. Evergreen Lake
   A convenient front-range option, Evergreen Lake occasionally yields tiger muskie—and it’s particularly appealing for anglers looking for accessible walk-and-wade opportunities. Be sure to check EPRD boating and seasonal regulations before heading out.
   
   
3. Gross Reservoir
   Gross Reservoir is regularly stocked with tiger muskies that can reach impressive lengths. But musky fishing here is classic low-density action: patience, structure, and stealth are your best allies.
   
   
4. Pinewood Reservoir
   Known for its hand-launch and non-motorized-only policy, Pinewood Reservoir offers a quieter fly-fishing experience. The area sees occasional tiger muskie opportunities, but solid shoreline and small-boat strategy still applies.
   
   
5. Shadow Mountain Reservoir (Developing Fishery)

   Shadow Mountain Reservoir was stocked with approximately 13,500 tiger muskies in September 2023. Biologists expect these fish to grow to trophy size (~36") over the coming years—making this a fishery to watch as it develops.

6. Harvey Gap Reservoir
   Another west-slope option, Harvey Gap, has documented tiger muskie stockings in recent years. While it remains a lower-traffic option, its relative solitude and stock history make it worth including—just be sure to check the latest stocking reports and regulations.

Best Times and Techniques for Musky Fishing

Musky are most active during late summer, particularly in August and September, when water temperatures cool slightly, driving the fish into shallow waters to feed. Early mornings and late evenings are prime times to fish, and many anglers find success during dusk or even at night.

• Fly Selection: Large streamers and flashy flies, such as bucktails and topwater lures, are most effective. Bright, unnatural colors like chartreuse and red are particularly effective in the late summer, when muskies are more aggressive​
• Retrieve Speed: Speed is essential when fly fishing for musky. A fast retrieve with a medium-heavy rod will help you mimic the movement of prey and provoke a strike​
• Figure-8 Technique: Muskies are notorious for following a fly right up to the boat. The "Figure-8" technique—moving the rod tip in a figure-8 motion near the surface—can extend your chances of landing these finicky fish​

Pro Tip: A Musky Challenge Awaits

Catching musky on the fly in Colorado requires patience, skill, and determination, but with the right locations, techniques, and gear, anglers have a real shot at landing one of these elusive predators. Whether you're casting in the deep waters of Gross Reservoir or wading through the weed-rich shallows of Lower Big Creek Lake, Colorado offers fantastic musky fly fishing opportunities for those who are up for the challenge.

Optimal Season and Conditions

Musky fly-fishing in Colorado is most productive from late spring through fall, with anglers often preferring the fall cool-down window for its improved activity and fish health. During hot summer months, focus on low-light periods (dawn/dusk) and always minimize fish handling time to reduce stress.

Recommended Gear

Fly fishing for tiger muskie demands heavy-duty gear:

• Rod: 9–10 weight fly rod
• Leader: Short steel or 60–80 lb fluorocarbon bite tippet
• Reel: Rugged full-arbor reel with strong drag
  This setup ensures hook-setting power and control during hard-fighting encounters.

Regulations Snapshot

• Statewide limit: 1 tiger muskie ≥ 36 inches, statewide (but always check for water-specific rules).
• Note: CPW has proposed changes for certain areas like Shadow Mountain/Grand Lake/Granby; however, as of today, the 36" one-fish limit remains in effect.

Quick Access & Amenity Notes

• Evergreen Lake: Check Evergreen Park & Recreation District (EPRD) seasonal rules and boating policies.
• Pinewood Reservoir: Access is limited to hand-launch and non-motorized craft—great for stealthy float-fishing.