Colorado Fly Fishing Reports - Courtesy of The Flyfisher Group


Fishing Conditions: FAIR

Report Rating: FAIR Crowd Rating: Not Crowded
Not Crowded

Fly Fishing Report Date:

Sunday, Oct 18, 2015

Colorado Stream Update: "Beautiful day for a little autumn fly fishing."

Current Conditions at Saint Vrain:

For best results, try nymphing with size 18 and smaller. We were able to bring a few fish to the surface on a 22 Griffith's Gnat, but for the most part, fishing below the surface is the way to go. Longer leaders and lighter tippet is helpful for many of the wary fish that have been fished to all season.

The fishing is fair.  Overcast skies and 60+ degree weather. The water temperature was between 44-47 degrees and Slightly Off.

Weather & Water Conditions

Weather Water
Temp: 60+ Temp: 44-47
Sky: Overcast Flow: 25
Wind: None Clarity: Slightly Off
Precip: None Runoff: No 

Likely Catch

Species: Rainbow Rainbow Trout Female
Rainbow Trout Male
Weight: 0 lbs 12 oz
Length: 12 inches
Girth: 0 inches

Current Insect Hatches at Saint Vrain

Insect Type: Midge Black Midge Larva Illustration Black Midge Emerger Illustration Black Midge Adult Illustration
Insect: Black Midge
Color: Black
Size: 22
Time: AM

Recommended Flies for Saint Vrain

Fly: Biot Midge Biot Midge
Color: Black
Size: 22
Time: All Day
Fly: Griffith's Gnat Griffith's Gnat
Color: Blackish
Size: 20
Time: AM
Fly: Black Beauty Black Beauty
Color: Black
Size: 20
Time: All Day

Colorado Hatch Conditions for Late November

Insects Color Dates Emergence Size Spinner Fall Illustrations
© The Flyfisher Group


Gray Drake Gray Jun 1 -
Nov 30
Late Morning 14-16 Evening
Gray Drake Nymph illustration Gray Drake Emerger illustration Gray Drake Adult illustration
Micro Blue Winged Olive (BWO) Pale Olive Green to Blue Gray Jun 1 -
Nov 30
Clouds & warmest part of day 22-26 Evening
Micro Blue Winged Olive (BWO) Nymph illustration Micro Blue Winged Olive (BWO) Emerger illustration Micro Blue Winged Olive (BWO) Adult illustration


Chocolate Brown Midge Brown to Chocolate Feb 15 -
Dec 15
All Day 20-22 2-3 Hours
Chocolate Brown Midge Larva illustration Chocolate Brown Midge Emerger illustration Chocolate Brown Midge Adult illustration
Snow Midge Gray to Charcoal Jan 1 -
Dec 31
Warmest part of day 24-28 2-3 Hours
Snow Midge Larva illustration Snow Midge Emerger illustration Snow Midge Adult illustration


Beetle Brownish to Black May 1 -
Nov 30
All Day 10-18 NA
Beetle  illustration
Cricket Brownish Olive to Black Jun 1 -
Nov 30
Twilight & Dusk 8-16 NA
Cricket  illustration

Weather for Saint Vrain

Current: 25 °F    Light snow    Wind: 0 MPH N
Current Condtions

Light snow
Temperature: 25 °F
Humidity: 88%
Wind: 0 mph N
Pressure: 14.74 psi
Cloud Cover: 0%

Sunday's Forecast
weather forecastCloudy
High: 25 °F
Low: 16 °F
Wind: 5 mph ESE
Monday's Forecast
weather forecastSunny
High: 29 °F
Low: 16 °F
Wind: 9 mph W
Tuesday's Forecast
weather forecastOvercast
High: 34 °F
Low: 18 °F
Wind: 18 mph WNW

Archived Fishing Reports for Saint Vrain