The Clear Fork is one of the few rivers that remains cool enough to maintain a trout population year round. Fishing can be done any time of the year.
| Insect | Size | Begin | End | |
 |
BWO | 20-22 | March 31 | September 30 |
 |
Black Caddis | 16-18 | March 31 | May 31 |
 |
Tan Caddis | 14-18 | April 15 | September 30 |
 |
Sulphur/Light Cahill | 12-14 | May 1 | June 15 |
 |
Midges | 20-24 | January 1 | December 30 |
 |
Black Stones | 12-14 | February 20 | May 15 |
 |
Tricos | 20-24 | June 1 | September 30 |
 |
Terrestrials | 10-12 | May 15 | September 30 |