Update for February 12--All local trout streams are currently high and muddy from the recent rains. Stay tuned for updates...
The two-fly rig I discussed last week is very effective at this time of the year. During periods following heavy rains, a sinking tip III line with a Murray's Fluorocarbon Sinking 6ft 3X leader is good for attaching the streamer to the leader. Then I come off the bend of the streamer hook with 24 inches of 4X mono and attach the nymph. Right below the riffle I have good success with the Shenandoah Silver Ghost Streamer size 10 with a Murray's Dark Stonefly Nymph size 12 below it. The large trout feed deeply below these riffles and the sinking tip III line enables me to swim this two fly rig right along the stream bottom. A very slow across stream line hand stripping action usually brings solid strikes from the riffle on downstream for the next 100 feet.
From this point in the pool on downstream to the tail of the pool, I switch to a different streamer-nymph combination in order to match the natural minnows and caddis larva in that part of the pool. The Shenandoah Skunk Streamer size 10 and the Murray's Caddis Larva size 14 are both very effective in this part of the pool and the sinking tip III line helps me fish them deeply across stream, so I can cover the pool thoroughly.
Passage Creek and the Hidden Valley of the Jackson have this type of fishing.