Southwest Montana
Plan your fly fishing vacation around your favorite hatch!
| March 20th — May 20th | Blue Wing Olives |
| April 1st — May 15th | Skwallas |
| May 10th — July 25th | Caddis |
| June 5th — June 30th | Salmonflies/Golden Stones |
| June 20th — July 20th | Pale Morning Duns |
| June 20th — July 20th | Little Yellow Sally’s |
| August 1st — August 20th | Spruce Moth |
| August 1st — September 10th | Tricos |
For more in-depth information about Big Hole River Hatches, read Bugs of the Big Hole Part One and Part Two, Summer Hatches.
| March 20th — May 10th | Blue Wing Olives |
| May 5th — September 20th | Caddis |
| June 20th — August 5th | Pale Morning Duns |
| July 20th — September 20th | Craneflies |
| June 20th — August 20th | Little Yellow Sally’s |
| August 5th — September 5th | Tricos |
| September 10th — November 10th | Blue Wing Olives |
Madison River
| March 20th — May 20th | Blue Wing Olives |
| May 10th — August 15th | Caddis |
| June 15th — July 15th | Salmonflies/Golden Stones |
| July 1st — August 10th | Little Yellow Sally’s |
| July 1st — July 25th | Pale Morning Duns |
| September 5th — October 25th | Blue Wing Olives |
Poindexter Slough Spring Creek
| March 20th — May 10th | Blue Wing Olives |
| May 5th — August 15th | Caddis |
| June 20th — August 5th | Pale Morning Duns |
| September 10th — November 10th | Blue Wing Olives |
| July 15th — August 5th | Craneflies |
Clark Canyon Dam
| May 1st — November 3oth | Midges |
| May 15th — October 30th | Callibaetis |
| June 25th — August 10th | Damsel Flies |
