From the benchWith water temps in the mid-to-upper 40s°F, trout metabolism is slow — don't rush your drifts. Set up in the 3–5 ft seams along the main channel edges and fish your nymph dead-slow, right on the bottom, using a long fluorocarbon tippet (5X or 6X) to stay stealthy in this clear water. The best action today will be a compressed window from about 11 AM to 2 PM when the sun warms the water a degree or two and the BWO hatch fires; keep a dry fly ready and watch the slow tailouts for subtle sipping rises. If you don't see surface activity, stay deep with a tungsten jig pattern and focus on the inside seams where fish stack up to conserve energy in cold conditions.