Shortly after ice-out, which is typically in mid-June, we see the emergence of large Salmon Flies, Stoneflies, and Blue Wing Olives. Come the end of June, we see the addition of Caddis, which dominate the month of July, during which time the hatch can approach blizzard conditions. This brings trout and salmon to the surface in outstanding numbers, feeding with reckless abandon, which is something that one must experience firsthand to fully appreciate. Mayflies join the large mix of insects in the month of August. In September, hatches are possible on warmer days but are far less frequent. The insect activity in all seasons is controlled by the water level and temperature. No two seasons have been alike, so while this is a general outline, these hatches are not guaranteed.