Henry’s Fork 6-23-18

Widespread rain, wind, and variable flows out of Island Park Reservoir and unseasonably cool weather slowed the green drake emergence along the Harriman State Park reach of the river.  With seasonably warm weather predicted to move in by Monday, look for this event to get into full swing. A few golden stone adults remain in Box Canyon and the Coffee Pot area, and PM caddis activity seems good up and down the river.  The grey drake emergence on the crowded lower river has been good. Look for crowding to ease on the lower river as flows in the nearby South Fork approach normal for the season and the stonefly emergence begins.