States | Colorado | South Boulder Creek | Hatch Calendar

South Boulder Creek Hatch Calendar

Monthly Overview

January

Midges

February

Midges

March

Midges

April

Midges

May

Midges

June

Midges

July

Midges

August

Midges

Tiny Blue Winged Olive

September

Midges

Tiny Blue Winged Olive

October

Midges

Tiny Blue Winged Olive

November

Midges

December

Midges

Current Season Hatches

Midges
All Year

Current Conditions

Flow: No flow data available

Temperature: —

Time: 09:44 PM

Date: March 01, 2026

Current Hatches:

Midges

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Peak Season Hatches

Midges
Sep 01 - Mar 31

Quick Stats

Total Hatches: 2
Current Season: 1
Peak Season: 0
Categories: 0

Filter & Conditions

All Mayflies Caddisflies Stoneflies Terrestrials Midges Scud Sculpin Damsels

Midges

Season:
All Year

Peak:
Sep 01 - Mar 31

All Day

Notes:
Best used with a hopper/dropper rig. All seasons.

Light Conditions:
Any

Optimal Flow:
65-125 CFS

Optimal Temperature:
45.0-55.0°F

Conditions Score: Fair

Tiny Blue Winged Olive

Season:
August - October

Peak:
Sep 01 - Oct 31

All Day

Notes:
With the low fall flows, small BWO take center stage.

Light Conditions:
Overcast

Optimal Flow:
25-100 CFS

Optimal Temperature:
45.0-50.0°F

Recommended Flies:
Purple haze, Parachute Adams, PMD

Conditions Score: Poor