Henry’s Fork, August 10th, 2024
The effects of water temperature and dissolved oxygen on salmonid well being will begin to wind down now with less daylight coming through shorter days and cooler nights as we move through August. Cooler air temperatures and less daylight means more active trout. The river from Island Park Dam to Pinehaven is a good example of this coming on. Early in the day trico activity is the major mayfly event up and down the river now with some speckled duns coming out in slow water reaches. Terrestrial insect patterns, especially those for ants and hoppers will produce later in the day as will those for the caddis life cycle.
Flies to fish: