From the benchWith flows at 1,590 cfs and sunny skies, the Bighorn's classic nymphing lanes are firing — focus your morning on the deep, gravel-bottomed runs between Fort Smith and the 3-Mile access, keeping your indicator set to 1.5x the water depth and your flies ticking bottom. As the sun gets high and temps push toward 60°F, watch the slower tailouts and inside seams for rising fish during the Baetis and PMD window; switch to a dry and approach from downstream with a long, fine tippet (5X or 6X) to avoid spooking fish in the gin-clear water. Brown trout are beginning to show pre-spawn aggression, so don't overlook a sculpin or streamer swung through the deeper, rocky slots in the lower beats during the warmest part of the afternoon.