Blue River Tailwater Report – Trophy Trout & Tactical Hatches (June 30, 2025)

Blue River Fly Fishing Report – June 30, 2025

The Blue below Green Mountain is showing off right now — clear flows, cool water, and just enough current to keep the crowds honest and the fish happy. Mid-morning hatches are starting to bring fish to the surface, but most of the action is still sub-surface with clean drifts and stealthy approaches.

This is technical tailwater fishing at its finest. Rainbows are pushing into the seams, browns are hugging the bottom, and both are keyed in on caddis and PMD emergers. Wade carefully, fish deliberately, and you’ll find success — especially if you bring a little patience and 6x tippet.

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Conditions Summary

• Flow Rate: 410 CFS
• Water: 45–50°F
• Air: 68–75°F
• Clarity: Clear
• Best Times: 8:00 AM – 12:30 PM and after 5:30 PM
• Fishing Pressure: Moderate, heavier on weekends
• Wind: Mild mornings, light gusts in the canyon by afternoon

Blue River Hatch Chart

Top 3 Flies for the Month

• Dry Fly: Elk Hair Caddis, size 16 – Best during evening hatches in side channels and soft water seams.
• Nymph: Barr’s PMD Emerger, size 18 – Target mid-morning risers and suspended fish near drop-offs.
• Streamer: Goldie, size 6 – Strip deep through tailouts and undercut banks early or late in the day.

Tips Fly Fishing on the Blue River

• Seasonal Tip: As summer warms up, fish shift to the shadows. Work the transitional water and look for mid-column feeders.
• Dry Fly: Look for risers post-5:00 PM. Fish upstream to soft seams and expect technical eats.
• Nymphing: Use a two-fly rig with a heavy point (tungsten Frenchie) and a Barr’s PMD Emerger trailing. Adjust depth frequently.
• Streamer Fishing: Morning shade and cloudy afternoons are prime. Cast tight to banks and vary your retrieve until you get a chase.

Access Points

1. Green Mountain Trailhead

• Description: Closest to the dam with coldest water and concentrated fish.
• Why Fish Here: High fish density, ideal for technical nymphing and sight fishing.
• Location: Google Maps Link
• Locals’ Rating: ⭐⭐⭐⭐⭐

2. Canyon Run Pull-Off

• Description: Mid-river access with a mix of deep pockets and riffles.
• Why Fish Here: Balanced water and less foot traffic than the main trailhead.
• Location: Google Maps Link
• Locals’ Rating: ⭐⭐⭐⭐☆

3. Heeney Cutoff Bend

• Description: Downstream stretch with slower water and undercut banks.
• Why Fish Here: Ideal for streamer fishing or covering ground with a Euro rig.
• Location: Google Maps Link
• Locals’ Rating: ⭐⭐⭐⭐

🔥 Hot Spots

• Behind the Rock Ledge Trail Fork: A series of riffles and deep bends with active feeders.
• Just Below the Dam Outlet: Coldest water, most consistent bug life, but expect company.
• Backcountry Bend (1.5 mi in): Soft seams and spooky risers — bring your A-game and long tippet.

Local Regulations and Notes on Landowner Rights

• Artificial flies and lures only
• Catch and release is encouraged, especially near the dam 
• Stay below the high-water mark; private land flanks much of this stretch
• Do not block or park on ranch access roads or gates
• AND... just don't be that guy. Respect for everything is a common baseline. 

FAQ on This Spot

Q: Is this section good for beginners?
A: It’s more technical than beginner-friendly. Fish are selective, and access requires careful wading.

Q: Are there camping spots nearby?
A: Yes — Green Mountain Reservoir has designated sites and dispersed options close to trail access.

Q: When’s the best season to fish here?
A: Late spring through early fall. July–August mornings offer consistent hatches and cold water.

Q: Can I fish streamers during the day?
A: Yes, especially during cloud cover or lower light. Focus on structure and drop-offs.

Q: Is it safe to wade at 400+ CFS?
A: Yes, but cautiously. The current is fast in some sections. Stick to inside bends and gravel-bottomed stretches.