They are already hatching on the middle around lower bridge down probly up high too around bend. My goal this year however is to catch a salmon on a fly on the D only chrome counts. I usually fish EHC's , PMD's or BWO's during the salmon fly hatch and catch more than I do on salmon flies but the violent take on a salmon fly is up there with swinging for steel. As always nymphing will out produce any method red zebra midges, green rock worms, hairs ears and golden stones are my go to nymphs year round they all catch steelhead too.