Colorado ·
Blue River Fly Fishing Report - November 1, 2026
BLUE RIVER
ReportNOV 1 — 8, 2026
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Flow
209CFS
BLUE RIVER BELOW GREEN MOUNTAIN RESERVOIR, CO
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Water Temp
—
Updated 2026-11-01
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Weather
32–52°F
Patchy Fog then Chance Rain Showers
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Clarity
Clear
Check post-storm
Flow has jumped to 209 CFS (gauge height 3.56 ft), up significantly from last week's 141 CFS — expect slightly off-color water in faster runs, but softer seams and inside bends should remain fishable. Rain showers today transitioning to rain/snow overnight and snow Monday means conditions will tighten, so fish today's warmer afternoon window hard.
What's Working — Hot Flies
Juju Baetis Tungsten #22
22
BWO WD-40 #22
22
Parachute - Blue Wing Olive #22
22
Black Zebra Midge(TBH) #20
20
Olsen's Peacock Blowtorch Barbless #22 - 24
22-24
Roza's World Spain Perdigon Barbless #18 - 32
18-20
Tungsten Tailwater Sowbug - Rainbow #10
10
Egan's Frenchie #12
12
Barr's Flashback Emerger - BWO #22
22
Coffey's CH Sparkle Minnow Sculpin #6
6
Lil Bit Craven - Dark Olive #22
22
Egan's Silver Bullet - Baetis #14
14
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Midges | 20-24 | Heavy | 11 AM - 3 PM |
| Blue-Winged Olives (Baetis) | 20-22 | Moderate | 12 PM - 3 PM |
| Caddis | 18-20 | Light | 1 PM - 4 PM |
| Scuds / Sowbugs | 14-16 | Moderate | All Day |
| Stoneflies (small) | 16-18 | Light | 10 AM - 1 PM |
Best Time Window
- 8 AM - 11 AM: Pre-hatch nymphing with sowbugs and Frenchies in deeper runs and slots below Green Mountain Dam before rain intensifies.
- 11 AM - 3 PM: Prime BWO and midge hatch window — overcast skies will keep fish looking up; watch slower flats and tailouts for rising trout.
- 3 PM - 5 PM: Streamer hour as light fades and temperatures drop ahead of tonight's rain/snow transition — swing a Sparkle Minnow through outside bends.
Guide's Tip
From the benchWith flows up 50% from last week at 209 CFS, skip the fast center-channel water and focus your drifts on the soft seams just off the main current, inside bends, and the slower water directly below the dam. Set your indicator depth to get flies within 6 inches of the bottom — fish are hugging structure in the higher flow. The overcast, rainy conditions today are ideal for BWO hatches, so watch for subtle surface sipping between 11 AM and 3 PM and be ready to switch to a dry quickly. With snow arriving Sunday night and Monday, today is your best window of the week — get out early and stay through the afternoon hatch.
Main Species
Rainbow Trout
Brown Trout
Mountain Whitefish
