Blue River Tailwater Report – July 2025: Sight-Fishing, PMDs, and Trout Warfare

  • July 17, 2025

Blue River Fly Fishing Report near Green Mountain Resevior

 

Listen to the Podcast

Blue River Tailwater_ Sight-Fishing and Trout Warfare Report
10:50

 

Conditions Summary

Guide Rating (800 x 175 px) (2)

  • Flow Rate: ~580 CFS
  • Water Temp: 47°–52°F
  • Air Temp: 60s early, low 80s mid-day
  • Clarity: Clear to slightly green — 3 ft visibility
  • Best Times: 7:30–11:30 AM and 6 PM to dusk
  • Crowds: Low. This is work-for-it water.
  • Overall Rating: Consistent flows, active fish, and solitude make this a top-tier week—if you're willing to hike for it.

 


Blue River Hatch Chart (Below Green – July)

Insect Hatch Status Guide Tip
PMDs Peaking Look for mid-morning risers in soft buckets
Caddis Active Twitch dries through glides in the afternoon
Yellow Sallies Strong Midday riffle runs – try a soft hackle dropper
Midges Early/late Fish deep early, switch to dries by 9 AM
Terrestrials Beginning Ants and beetles on the bank after 11 AM

 

DOWN LOAD THE BLUE RIVER HATCH CHART

 

 

Top 3 Flies for the Week

Type Pattern Size Notes
Dry PMD Sparkle Dun 16–18 Use in slower seams between boulders
Nymph Frenchie or Pheasant Tail 16–18 Tight-line rig with a soft dropper
Streamer Sculpzilla or Thin Mint 6–8 Swing through deeper tailouts early and late
 

 

 

Tips for Fly Fishing Below Green Mountain

Seasonal Tip
This water is moving. Depth and current changes fast. High-sticking and tight-line methods rule. Dry-dropper works too, but expect short drifts and picky eats.

Dry Fly
PMDs are hot right now. Fish will rise mid-morning in seams and glides. Long tippet, slack-line casts, and stealth are key.

Nymphing
Tight-line or euro rigs dominate. Pair a size 16 anchor fly with a size 20 dropper. Use 5X fluoro and stay close to structure.

Streamer Fishing
This is a streamer river—if you fish smart. Early morning or post-storms are best. Short strips, long pauses, swing wide.


 

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Access Points

Access Spot Why Fish Here Rating
Gore Canyon Trailhead Deep water, structure, low pressure ★★★★★
Confluence with Colorado Big fish potential, mixed water types ★★★★☆
BLM Pull-offs (Heeney Rd) Lesser known, pocket water and slots ★★★★☆
Below Reservoir Access Steep hike, but strong tailwater flows ★★★☆☆

 

 

Local Regulations + Notes

  • Watch for private land boundaries — BLM maps recommended

  • Barbless hooks and artificial flies only

  • Long hike-ins = pack smart, don’t overgear

  • Bring bear spray. This isn’t suburbia.


FAQ – Below Green Mountain Edition

1. What’s the hatch window right now?
PMDs start popping by 9 AM and taper by noon. Caddis after 4 PM.

2. Is this section wadeable at 580 CFS?
Yes, but cautiously. Stick to inside bends, side channels, and tailouts.

3. What’s the best rig for this section?
Tight-line nymph with a Frenchie up top and RS2 or soft hackle below.

4. How far do I have to hike in?
Anywhere from 10 to 45 minutes depending on the access point.

5. Can I fish streamers here?
Yes—and you should. But target shade, low light, or weather shifts.