Fishing Conditions: GREAT

Report Rating: GREAT
Crowd Rating: Somewhat Crowded
Somewhat Crowded

Fly Fishing Report Date:

Wednesday, May 15, 2019

Weather & Water Conditions

Weather Water
Temp: 56-59 Temp: 40-43
Sky: Clear Flow: 68
Wind: None Clarity: Slightly Off
Precip: None Runoff: No 

Colorado Stream Update: Fishing has been good, and flows have been manageable

Current Conditions at South Boulder Creek:

Flows have been sitting around 65 CFS on South Boulder Creek for the past week or so. This has allowed the fish to find comfortable water, and focus on feeding. Nymphing patterns like hare's ears, PT's, and San Juan worms is a good place to start. Some fish have been taken on the surface with hopper dropper rigs, especially on warm days with some cloud cover. There are hatches of BWO's, midges, and caddis fairly regularly. Stimulators have been a good option on the surface for surveying water. Don't be afraid to swing a small streamer, some nicer browns have been moved from under rocks and off banks.

Guides report that South Boulder Creek is on fire! Midges and mayflies are everywhere. Late spring temperatures are running high around Denver. Get in some time right now before the water begins to blow out!  The fishing is great.  Clear skies and 56-59 degree weather. The water temperature was between 40-43 degrees and Slightly Off.

Likely Catch

Species: Brown
Weight: 2 lbs 8 oz
Length: 17 inches
Girth: 9 inches
Brown Trout Female Brown Trout Female
Brown Trout Male Brown Trout Male

Current Insect Hatches at South Boulder Creek

Insect Type: Midge

Insect: Black Midge

Color: Black

Size: 20

Time: PM

Insect Type: Mayfly

Insect: Blue Winged Olive

Color: Green

Size: 18

Time: PM

Insect Type: Caddisfly

Insect: Little Plain Brown Sedge

Color: Brown

Size: 16

Time: PM

Recommended Flies for South Boulder Creek

Fly: 20, Incher
Color: Brown
Size: 16
Time: All Day
20, Incher 20, Incher
Fly: Caddis Emerger
Color: Olive
Size: 18
Time: All Day
Caddis Emerger Caddis Emerger
Fly: Pheasant Tail
Color: Brown
Size: 18
Time: All Day
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 


Current Conditions

Clouds
Currently: Overcast Clouds
Temperature:  40 F
Temp Max:  45 F
Temp Min:  31 F
Humidity: 89%
Wind: 13 ENE mph
Pressure: 1002
Snow Tuesday 9:00PM — 33 
Expect light snow with temperatures ranging between 26 and 33 .
Wind: 6 WSW mph; Humidity: 98%;  Snow: 0.188 for next 3 hours.
Clouds Wednesday 6:00AM — 24 
Expect overcast clouds with temperatures ranging between 22 and 24 .
Wind: 17 W mph; Humidity: 91%; 
Clouds Wednesday 9:00AM — 34 
Expect scattered clouds with temperatures ranging between 34 and 34 .
Wind: 7 WNW mph; Humidity: 79%; 
Snow Wednesday 12:00PM — 40 
Expect light snow with temperatures ranging between 40 and 40 .
Wind: 3 ESE mph; Humidity: 81%;  Snow: 0.875 for next 3 hours.
Snow Wednesday 3:00PM — 34 
Expect snow with temperatures ranging between 34 and 34 .
Wind: 9 ESE mph; Humidity: 96%;  Snow: 4.312 for next 3 hours.
Snow Wednesday 6:00PM — 33 
Expect snow with temperatures ranging between 33 and 33 .
Wind: 10 E mph; Humidity: 98%;  Snow: 3.75 for next 3 hours.
Snow Wednesday 9:00PM — 31 
Expect snow with temperatures ranging between 31 and 31 .
Wind: 9 E mph; Humidity: 98%;  Snow: 3.25 for next 3 hours.
Snow Thursday 6:00AM — 29 
Expect light snow with temperatures ranging between 29 and 29 .
Wind: 14 ESE mph; Humidity: 99%;  Snow: 0.438 for next 3 hours.
Snow Thursday 9:00AM — 29 
Expect light snow with temperatures ranging between 29 and 29 .
Wind: 14 ESE mph; Humidity: 98%;  Snow: 0.562 for next 3 hours.
Snow Thursday 12:00PM — 33 
Expect light snow with temperatures ranging between 33 and 33 .
Wind: 16 ESE mph; Humidity: 98%;  Snow: 0.126 for next 3 hours.
Snow Thursday 3:00PM — 32 
Expect snow with temperatures ranging between 32 and 32 .
Wind: 12 E mph; Humidity: 98%;  Snow: 3.188 for next 3 hours.
Snow Thursday 6:00PM — 33 
Expect snow with temperatures ranging between 33 and 33 .
Wind: 5 WNW mph; Humidity: 99%;  Snow: 10.124 for next 3 hours.
Snow Thursday 9:00PM — 31 
Expect light snow with temperatures ranging between 31 and 31 .
Wind: 16 W mph; Humidity: 90%;  Snow: 0.875 for next 3 hours.
Clear Friday 6:00AM — 26 
Expect clear sky with temperatures ranging between 26 and 26 .
Wind: 27 W mph; Humidity: 83%;