This is the hatch chart for the Madison river on the border of Montana and Wyoming.
| Common Name | Dates of Emergence |
| Grannom Caddis | Apr. 15 - May 30 |
| Pale Morning Dun | May 20 - July 20 |
| Caddis (various) | June 1 - July 30 |
| Salmonfly | June 20 - July 20 |
| Little Blue-Winged Olive | Apr. 10 - May 10 |
| Little Blue-Winged Olive | Sep. 1 - Oct. 31 |
| Terrestrials | Aug. 1 - Sep. 15 |
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