They all have there seasons Byron, I've been on the Henry's Fork in mid July for the Flavs, good flows and plenty of bugs. No matter where you are every season is different. Here in the east this year even the tailwaters are low. No releases until the end of May, and that's a maybe. This past winter was very cold and plenty of snow, now basically no rain for 3 weeks. We got cold when the west got warm at the end of January. Oh well that's fishing, enjoy your trip and I hope the Fork treats you well.

Gene