From the benchWith all-day rain and flat light on Sunday, skip the dry-fly vigil until you actually see noses — instead, start deep with a tungsten stonefly nymph set 6-8 ft under an indicator and work the main-channel seams between 3 and 6 ft of water. When the BWO and Mahogany hatch kicks in around midday, watch the slower tailouts and inside bends for rising fish and be ready to switch to a size 18-20 emerger or cripple pattern. If the rain picks up intensity by afternoon and clarity starts to drop even slightly, pull out a dark streamer and slow-strip it along undercut banks — big fish will move shallow to ambush in low light. Keep your indicator depth adjustments frequent; at 2,040 cfs the bottom structure changes quickly between runs.