| Insect | Size | Begin | End | |
 |
Baetis | 16-20 | October 1 | November 15 |
 |
Caddis | 14-18 | May 15 | August 15 |
 |
Golden Stonefly | 4-8 | May 15 | July 15 |
 |
March Brown | 12-16 | March 1 | April 30 |
 |
Midge | 18-22 | January 1 | December 31 |
 |
PMD | 16-22 | June 1 | August 31 |
 |
Salmonfly | 4-8 | May 15 | June 15 |
 |
Skwala | 6-8 | March 15 | May 31 |
 |
Streamers | 4-10 | September 1 | November 30 |
 |
Terrestrials | 6-10 | July 1 | October 31 |
 |
Royal Wulff | 14-16 | June 1 | October 15 |
 |
Humpy | 12-16 | June 1 | October 15 |
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