Fishing Conditions: FAIR

Report Rating: FAIR
Crowd Rating: Somewhat Crowded
Somewhat Crowded

Fly Fishing Report Date:

Tuesday, Apr 28, 2020

Weather & Water Conditions

Weather Water
Temp: 60+ Temp: 44-47
Sky: Clear Flow: 207
Wind: None Clarity: Slightly Off
Precip: None Runoff: No 

Colorado Stream Update: Fishing on the St. Vrain is ok right now.

Current Conditions at Saint Vrain:

For best success try fishing in Lyons and Longmont. Water is still cold but it is slowly heating up. Nymphing is producing the most fish but we are seeing the BWO's coming off so make sure do bring a few dries with you.

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

Likely Catch

Species: Brown
Weight: 0 lbs 10 oz
Length: 12 inches
Girth: 4 inches
Brown Trout Female Brown Trout Female
Brown Trout Male Brown Trout Male

Current Insect Hatches at Saint Vrain

Insect Type: Mayfly

Insect: Blue Winged Olive

Color:

Size:

Time:

Recommended Flies for Saint Vrain

Fly: Carp Fly
Color: 
Size: 
Time: 
Carp Fly Carp Fly
Fly: Parachute Blue Winged Olive
Color: 
Size: 
Time: 
Parachute Blue Winged Olive Parachute Blue Winged Olive
Fly: Prince Nymph
Color: 
Size: 
Time: 
Prince Nymph Prince Nymph

Colorado Hatch Conditions for Early August

Caddisflies

Insects: Green Sedge
Color: Olive to Gray Brown
Dates: Jul 15 – Sep 30
Emergence: Morning & Afternoon
Size: 12-14
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Little Black Sedge
Color: Chocolate to Black
Dates: Jul 15 – Sep 30
Emergence: Sporadic
Size: 16-18
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Little Plain Brown Sedge
Color: Brown to Chocolate
Dates: Jun 15 – Aug 30
Emergence: Sporadic
Size: 14-16
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Little Sister Sedge
Color: Green to Greenish Brown
Dates: May 15 – Aug 30
Emergence: Afternoon & Evening
Size: 14-16
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Little Tan Short Horn Sedge
Color: Dark Brown to Yellow
Dates: Mar 1 – Aug 30
Emergence: Sporadic
Size: 14-16
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Little Western Dark Sedge
Color: Dark Brown
Dates: Jun 1 – Aug 15
Emergence: Mid Day
Size: 16-18
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Micro Caddis
Color: Yellow, Orange or Brown
Dates: Jun 15 – Oct 15
Emergence: Sporadic
Size: 20-22
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Spotted Sedge
Color: Brownish Yellow
Dates: May 15 – Sep 30
Emergence: Sporadic
Size: 10-12
Spinner Fall: NA
Illustrations © The Flyfisher Group 

Mayflies

Insects: Blue Winged Olive
Color: Light Olive Brown to Brown Olive
Dates: Mar 1 – Nov 15
Emergence: Clouds & warmest part of day
Size: 16-18
Spinner Fall: Evening
Illustrations © The Flyfisher Group 
Insects: Callibaetis Speckled Dun
Color: Tannish Olive to Olive Gray
Dates: Jun 1 – Aug 30
Emergence: Cloudy, Late Morning
Size: 14-16
Spinner Fall: Late Afternoon
Illustrations © The Flyfisher Group 
Insects: Early Pale Morning Dun (PMD)
Color: Olivish Yellow to Yellowish Pink
Dates: Jun 1 – Sep 15
Emergence: Mid Morning to Early Afternoon
Size: 16-22
Spinner Fall: Late Evening
Illustrations © The Flyfisher Group 
Insects: Ginger Quill
Color: Pale Cream to Whitish
Dates: Jul 1 – Sep 15
Emergence: Morning
Size: 14-16
Spinner Fall: Evening
Illustrations © The Flyfisher Group 
Insects: Gray Drake
Color: Gray
Dates: Jun 1 – Nov 30
Emergence: Late Morning
Size: 14-16
Spinner Fall: Evening
Illustrations © The Flyfisher Group 
Insects: Iron Blue Quill
Color: Light Olive Tan to Blue Gray
Dates: Jun 1 – Aug 15
Emergence: Warmest part of day
Size: 20-22
Spinner Fall: Evening
Illustrations © The Flyfisher Group 
Insects: Micro Blue Winged Olive (BWO)
Color: Pale Olive Green to Blue Gray
Dates: Jun 1 – Nov 30
Emergence: Clouds & warmest part of day
Size: 22-26
Spinner Fall: Evening
Illustrations © The Flyfisher Group 
Insects: Pink Pale Morning Dun
Color: Pink to Orangish to Rusty Red
Dates: Aug 1 – Sep 15
Emergence: Daytime
Size: 14-16
Spinner Fall: Early Morning
Illustrations © The Flyfisher Group 
Insects: Red Quill
Color: Reddish Brown
Dates: Jun 15 – Sep 30
Emergence: Mid Morning
Size: 14-16
Spinner Fall: Evening
Illustrations © The Flyfisher Group 
Insects: Trico
Color: Black
Dates: Jul 15 – Sep 15
Emergence: Morning
Size: 22-26
Spinner Fall: Early Afternoon
Illustrations © The Flyfisher Group 

Midges

Insects: Black Midge
Color: Blackish to Black
Dates: Apr 1 – Nov 15
Emergence: All Day
Size: 18-20
Spinner Fall: 2-3 Hours
Illustrations © The Flyfisher Group 
Insects: Chocolate Brown Midge
Color: Brown to Chocolate
Dates: Feb 15 – Dec 15
Emergence: All Day
Size: 20-22
Spinner Fall: 2-3 Hours
Illustrations © The Flyfisher Group 
Insects: Micro Black Midge
Color: Blackish to Black
Dates: Mar 1 – Nov 15
Emergence: Morning
Size: 22-26
Spinner Fall: 2-3 Hours
Illustrations © The Flyfisher Group 
Insects: Snow Midge
Color: Gray to Charcoal
Dates: Jan 1 – Dec 31
Emergence: Warmest part of day
Size: 24-28
Spinner Fall: 2-3 Hours
Illustrations © The Flyfisher Group 

Stoneflies

Insects: Micro Yellow
Color: Greenish Yellow to Yellow
Dates: Jun 1 – Aug 30
Emergence: 46-54° Water Temps Morning
Size: 18-22
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Winter Black
Color: Black Brown to Reddish Olive, Mottled Brown
Dates: Apr 1 – Aug 15
Emergence: Cold Mountain Streams and Small Ponds
Size: 18-22
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Yellow Sally
Color: Pale Yellow to Pinkish Yellow
Dates: Jun 15 – Aug 30
Emergence: Morning to Early Afternoon
Size: 2-8
Spinner Fall: NA
Illustrations © The Flyfisher Group 

Terrestrials

Insects: Beetle
Color: Brownish to Black
Dates: May 1 – Nov 30
Emergence: All Day
Size: 10-18
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Black & Red Ant
Color: Red & Black
Dates: Jul 1 – Sep 30
Emergence: All Day
Size: 18-20
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Black Ant
Color: Black
Dates: May 1 – Nov 15
Emergence: All Day
Size: 20-24
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Cricket
Color: Brownish Olive to Black
Dates: Jun 1 – Nov 30
Emergence: Twilight & Dusk
Size: 8-16
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Dog Day Cicadas
Color: Black & Orange
Dates: Jul 1 – Aug 31
Emergence: Varied
Size:
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Grasshopper
Color: Green to Brownish Tan
Dates: May 15 – Nov 15
Emergence: All Day
Size: 2-14
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Red Ant
Color: Red to Orangish
Dates: May 1 – Oct 15
Emergence: All Day
Size: 18-22
Spinner Fall: NA
Illustrations © The Flyfisher Group 


Current Conditions

Clouds
Currently: Overcast Clouds
Temperature:  35 F
Temp Max:  41 F
Temp Min:  17 F
Humidity: 27%
Wind: 39 W mph
Pressure: 1015
Snow Monday 5:00PM — 27 
Expect light snow with temperatures ranging between 11 and 27 .
Wind: 47 WNW mph; Humidity: 75%;  Snow: 0.19 for next 3 hours.
Clouds Monday 8:00PM — 18 
Expect scattered clouds with temperatures ranging between 6 and 18 .
Wind: 27 W mph; Humidity: 82%; 
Clouds Monday 11:00PM — 13 
Expect broken clouds with temperatures ranging between 5 and 13 .
Wind: 27 W mph; Humidity: 82%; 
Clouds Tuesday 2:00AM —
Expect overcast clouds with temperatures ranging between 3 and 7 .
Wind: 24 W mph; Humidity: 83%; 
Clouds Tuesday 5:00AM —
Expect overcast clouds with temperatures ranging between 0 and 0 .
Wind: 20 W mph; Humidity: 86%; 
Clouds Tuesday 8:00AM —
Expect broken clouds with temperatures ranging between 3 and 3 .
Wind: 20 W mph; Humidity: 81%; 
Clouds Tuesday 11:00AM —
Expect overcast clouds with temperatures ranging between 9 and 9 .
Wind: 17 NW mph; Humidity: 73%; 
Snow Tuesday 2:00PM — 13 
Expect light snow with temperatures ranging between 13 and 13 .
Wind: 11 NNE mph; Humidity: 76%;  Snow: 0.38 for next 3 hours.
Snow Tuesday 5:00PM —
Expect light snow with temperatures ranging between 9 and 9 .
Wind: 6 SSE mph; Humidity: 90%;  Snow: 0.5 for next 3 hours.
Clouds Tuesday 8:00PM — -1 
Expect broken clouds with temperatures ranging between -1 and -1 .
Wind: 16 W mph; Humidity: 89%; 
Clouds Tuesday 11:00PM — -1 
Expect scattered clouds with temperatures ranging between -1 and -1 .
Wind: 23 W mph; Humidity: 86%; 
Clouds Wednesday 2:00AM — -1 
Expect scattered clouds with temperatures ranging between -1 and -1 .
Wind: 30 W mph; Humidity: 85%; 
Clouds Wednesday 5:00AM — -0 
Expect scattered clouds with temperatures ranging between -0 and -0 .
Wind: 34 W mph; Humidity: 79%; 
Clouds Wednesday 8:00AM —
Expect few clouds with temperatures ranging between 5 and 5 .
Wind: 38 W mph; Humidity: 68%; 
Clear Wednesday 11:00AM — 17 
Expect clear sky with temperatures ranging between 17 and 17 .
Wind: 35 W mph; Humidity: 65%; 
Clouds Wednesday 2:00PM — 23 
Expect scattered clouds with temperatures ranging between 23 and 23 .
Wind: 33 W mph; Humidity: 62%; 
Clouds Wednesday 5:00PM — 19 
Expect few clouds with temperatures ranging between 19 and 19 .
Wind: 30 W mph; Humidity: 74%; 
Clouds Wednesday 8:00PM — 15 
Expect few clouds with temperatures ranging between 15 and 15 .
Wind: 33 W mph; Humidity: 79%; 
Clouds Wednesday 11:00PM — 15 
Expect few clouds with temperatures ranging between 15 and 15 .
Wind: 39 W mph; Humidity: 78%; 
Clouds Thursday 2:00AM — 16 
Expect scattered clouds with temperatures ranging between 16 and 16 .
Wind: 46 W mph; Humidity: 77%;