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 May

Caddisflies

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: 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: Western Black Quill
Color: Purplish Black to Grayish Brown
Dates: Apr 1 – Jun 30
Emergence: Mid Morning
Size: 14-12
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: Salmon Fly
Color: Black to Reddish Brown
Dates: May 15 – Jul 15
Emergence: 50-60° Water Late Morning on
Size: 4-8
Spinner Fall: NA
Illustrations © The Flyfisher Group 
Insects: Small Western
Color: Brownish
Dates: May 15 – Jul 15
Emergence: 46-56° Water Temps
Size: 14-18
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 

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 Ant
Color: Black
Dates: May 1 – Nov 15
Emergence: All Day
Size: 20-24
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

Current: 59 °F Clear Wind: 0 MPH N
Current Condtions

Clear

Temperature: 59 °F
Humidity: 59%
Wind: 0 mph N
Pressure: 14.72 psi
Cloud Cover: 100%
Sunday's Forecast
weather forecast: Sunny<br/> High: 56 °F  <br/>Low: 36 °F <br/> Wind: 5 mph S
Sunny
High: 56 °F
Low: 36 °F
Wind: 5 mph S
Monday's Forecast
weather forecast: Moderate or heavy rain shower<br/> High: 56 °F  <br/>Low: 36 °F <br/> Wind: 3 mph S
Moderate or heavy rain shower
High: 56 °F
Low: 36 °F
Wind: 3 mph S
Tuesday's Forecast
weather forecast: Moderate or heavy rain shower<br/> High: 61 °F  <br/>Low: 40 °F <br/> Wind: 3 mph SE
Moderate or heavy rain shower
High: 61 °F
Low: 40 °F
Wind: 3 mph SE