One of the most famous hatches on the Middle Provo is the Green Drake mayfly. Look for these giant mayflies in early July. When they start to hatch, big trout that don’t normally come to the surface will finally show themselves. The mayfly is about a size 10 which is like a big chunk of steak for the trout that eat them. They last for a few weeks depending on the year.
The late Winter/early Spring Buffalo Midge hatch is another amazing hatch on the Middle Provo. It’s the biggest midge we see on the river and is about a size 18 midge which is huge in the midge world.
You’ll see pods of trout rising causing the river to look like it’s boiling at times. On a good day this hatch can last for a few hours. Trout will almost exclusively focus on the bugs that are just hatching with the shuck still attached.