Fishing Conditions: GOOD

Report Rating: GOOD
Crowd Rating: Somewhat Crowded
Somewhat Crowded

Fly Fishing Report Date:

Monday, Mar 13, 2017

Weather & Water Conditions

Weather Water
Temp: 48-51 Temp: 40-43
Sky: Clear Flow: 26
Wind: None Clarity: Crystal Clear
Precip: None Runoff: No 

Colorado Stream Update: The best fly fishing on the Big Thompson is directly below Lake Estes and down river about three miles from the dam.

Current Conditions at Big Thompson:

The baetis insect-- this is the famed Blue Wing Olive-- is in full swing on the Big T right now! We aren't quite seeing a lot of surface feeding just yet, but these hungry trout are definitely feeding on baetis nymphs and emergers sub-surface. Size #20 Pheasant Tails are a great baetis nymph pattern and size #22 gray RSIIs are working very well imitating the emerging stage of their life cycle. The water is still very skinny so this is the place to break out the 6x tippet spool.

The fishing is good.  Clear skies and 48-51 degree weather. The water temperature was between 40-43 degrees and Crystal Clear.

Likely Catch

Species: Brown
Weight: 1 lbs 11 oz
Length: 14 inches
Girth: 5 inches
Brown Trout Female Brown Trout Female
Brown Trout Female Brown Trout Female

Current Insect Hatches at Big Thompson

Insect Type: Midge

Insect: Chocolate Brown Midge

Color: Brownish Tan

Size: 26/micro

Time:

Insect Type: Mayfly

Insect: Blue Winged Olive

Color: Brown Olive

Size: 22

Time:

Recommended Flies for Big Thompson

Fly: Dorsey's Top Secret Midge
Color: Brownish
Size: 22
Time: 
Dorsey's Top Secret Midge Dorsey's Top Secret Midge
Fly: Rs2 Emerger
Color: Gray
Size: 22
Time: 
Rs2 Emerger Rs2 Emerger
Fly: Pheasant Tail
Color: Brown
Size: 20
Time: 
Pheasant Tail Pheasant Tail

Colorado Hatch Conditions for Late July

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: Red Quill
Color: Reddish Brown
Dates: Jun 15 – Sep 30
Emergence: Mid Morning
Size: 14-16
Spinner Fall: Evening
Illustrations © The Flyfisher Group 
Insects: Slate Winged Drake
Color: Brown to Slate Gray
Dates: Jun 15 – Aug 1
Emergence: Early Afternoon
Size: 16-12
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 
Insects: Western Green Drake
Color: Dark Olive
Dates: Jun 1 – Aug 1
Emergence: Cloudy, 1-4 pm
Size: 8-12
Spinner Fall: Evening
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: Giant Golden
Color: Brownish Yellow
Dates: Jun 1 – Aug 1
Emergence: Follows Salmonflies
Size: 14-18
Spinner Fall: NA
Illustrations © The Flyfisher Group 
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 


Weather for Big Thompson

Temporarily Unavailable