| Insect | Size | Begin | End | |
 |
Scud | 12-16 | April 1st | November 30th |
 |
Streamers | 2-10 | April 1st | November 30th |
 |
Midges | 16-24 | April 1st | October 31st |
 |
Callibaetis | 12-16 | May 15th | August 15th |
 |
Damselfly | 8-12 | June 15th | August 15th |
Visit our Colorado Flies by Location page here:
