Fishing Conditions: GOOD

Report Rating: GOOD
Crowd Rating: Somewhat Crowded
Somewhat Crowded

Fly Fishing Report Date:

Friday, Jul 12, 2019

Weather & Water Conditions

Weather Water
Temp: 60+ Temp: 44-47
Sky: Clear Flow: 150
Wind: None Clarity: Crystal Clear
Precip: None Runoff: No 

Colorado Stream Update: The Big T is giving up some good days on the water

Current Conditions at Big Thompson:

Currently flowing around 150 CFS the Big Thompson is good choice for a day on the water. Fish have been found both on top and beneath, so you might as well give them both! Hopper-dropper rigs are ideal for most circumstances, expect most eats below though so be sure you are fishing the right depth. Two-bits, PTs, and RS2's are a good place to start. Stimis, and Amy's ants are good for towing a deep nymph. Focus efforts towards side seems, but look for fish to move into riffles throughout the day.

Our local creeks provide the dry fly angler with amplitude of opportunity close to Denver and Boulder! Now is some of the best fishing of the year! All you need is a big attractor dry fly and a bead head dropper. It is wet wading season bring your shorts and wading boots!  The fishing is good.  Clear skies and 60+ degree weather. The water temperature was between 44-47 degrees and Crystal Clear.

Likely Catch

Species: Rainbow
Weight: 2 lbs 4 oz
Length: 17 inches
Girth: 7 inches
Rainbow Trout Female Rainbow Trout Female
Rainbow Trout Male Rainbow Trout Male

Current Insect Hatches at Big Thompson

None

Recommended Flies for Big Thompson

Fly: Soft Hackle Pheasant Tail
Color: Brown
Size: 18
Time: All Day
Soft Hackle Pheasant Tail Soft Hackle Pheasant Tail
Fly: Rainbow Warrior
Color: Gray
Size: 16
Time: AM
Rainbow Warrior Rainbow Warrior
Fly: Caddis Pupa
Color: Green
Size: 16
Time: PM
Caddis Pupa Caddis Pupa

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 


Current Conditions

Thunderstorm
Currently: Thunderstorm
Temperature:  63 F
Temp Max:  77 F
Temp Min:  49 F
Humidity: 61%
Wind: 13 W mph
Pressure: 1021
Clouds Saturday 9:00PM — 50 
Expect scattered clouds with temperatures ranging between 50 and 53 .
Wind: 9 ESE mph; Humidity: 61%; 
Clouds Sunday 6:00AM — 47 
Expect few clouds with temperatures ranging between 47 and 48 .
Wind: 9 SE mph; Humidity: 68%; 
Clear Sunday 9:00AM — 64 
Expect clear sky with temperatures ranging between 64 and 64 .
Wind: 8 WNW mph; Humidity: 42%; 
Clear Sunday 12:00PM — 70 
Expect clear sky with temperatures ranging between 70 and 70 .
Wind: 19 NW mph; Humidity: 27%; 
Clouds Sunday 3:00PM — 70 
Expect scattered clouds with temperatures ranging between 70 and 70 .
Wind: 25 NW mph; Humidity: 29%; 
Clouds Sunday 6:00PM — 68 
Expect scattered clouds with temperatures ranging between 68 and 68 .
Wind: 20 NW mph; Humidity: 33%; 
Clear Sunday 9:00PM — 52 
Expect clear sky with temperatures ranging between 52 and 52 .
Wind: 14 E mph; Humidity: 73%; 
Clear Monday 6:00AM — 47 
Expect clear sky with temperatures ranging between 47 and 47 .
Wind: 13 SE mph; Humidity: 69%; 
Clouds Monday 9:00AM — 66 
Expect scattered clouds with temperatures ranging between 66 and 66 .
Wind: 5 SSW mph; Humidity: 35%; 
Clouds Monday 12:00PM — 72 
Expect scattered clouds with temperatures ranging between 72 and 72 .
Wind: 20 NW mph; Humidity: 25%; 
Clouds Monday 3:00PM — 69 
Expect scattered clouds with temperatures ranging between 69 and 69 .
Wind: 44 NW mph; Humidity: 36%; 
Rain Monday 6:00PM — 63 
Expect light rain with temperatures ranging between 63 and 63 .
Wind: 8 NE mph; Humidity: 46%;  Rain: 0.75 for next 3 hours.
Clouds Monday 9:00PM — 54 
Expect broken clouds with temperatures ranging between 54 and 54 .
Wind: 14 ESE mph; Humidity: 66%; 
Clear Tuesday 6:00AM — 47 
Expect clear sky with temperatures ranging between 47 and 47 .
Wind: 8 SE mph; Humidity: 69%;