I have been out a few times this winter and here is what has worked.
- beadhead pheasant tail in chocolate brown, natural, and olive. I tie mine with different dubbing instead of herl sometimes to add a little flash
- zebra midges (any color) and any midge larva, pupa patterns have worked.
- olive and soft hackle. This is just a bead, olive thread and a soft hackle feather.
I havnt messed with to many other nymph patterns since those were catching fish but I would guess hares ear, caddis, and black stone fly nymph patters could be effective as well. Also if you are hitting a stream with limestone influence sow bug and scuds would be good to have on had.
For streamers, you can take your pick here. I have caught fish slow stripping, slow snap jigs, and dead drifting.
- mohair leechs, buggers, and slump busters have been effective for me.
Finally, I have been messing with north country spiders and have found luck with olive, brown, and tan bodies. I have been catching fish on the dead drift, no takers on the swing.
Good luck let us know how you do. I will probably be out this Friday if the rain this week doesn't have everything messed up and the temp stays above 20*. Temps around 40+ would be better.