Fishing Conditions: GOOD

Report Rating: GOOD
Crowd Rating: Somewhat Crowded
Somewhat Crowded

Fly Fishing Report Date:

Sunday, May 14, 2017

Weather & Water Conditions

Weather Water
Temp: 19- Temp: 40-43
Sky: Clear Flow: 280
Wind: None Clarity: Slightly Off
Precip: None Runoff: No 

Colorado Stream Update: The Big Thompson is high but still very productive.

Current Conditions at Big Thompson:

The Big Thompson is fishing well right now despite what you might think when seeing the flow at 280 cfs. It's definitely a nymphing game as fish are pooled up in deep holes right now. With that said, it's very important to have the right amount of weight on your nymph rig as you need to get to the bottom as quick as possible. Pheasant Tails, Prince Nymphs, and Copper Johns are all working very well at the moment.

The water is fast and deep better bring your split shot! Make sure your nymph rig is deep enough, find the bottom of the river and fish up. The stream is high but the water is still navigable and we are catching some nice fish.  The fishing is good.  Clear skies and 19- degree weather. The water temperature was between 40-43 degrees and Slightly Off.

Likely Catch

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

Current Insect Hatches at Big Thompson

None

Recommended Flies for Big Thompson

Fly: Prince Nymph
Color: Brown Olive
Size: 16
Time: 
Prince Nymph Prince Nymph
Fly: Copper John
Color: Brown
Size: 18
Time: 
Copper John Copper John
Fly: Pheasant Tail
Color: Brownish Olive
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