What footwear for exteded winter trip with wet snow (Southeast US)?

Hi Christine
You may find useful information in these articles.
Spring Footwear and Vapor Barrier Liners
Also, check out Andrew’s trip.

You might get more than ankle deep snow at elevations in the Smokies.

For conditions like that, I use:

liner sock (polypropylene or polyester)
thick wool sock
Rocky Gore-Tex socks (size 12 for a size 10.5 foot/shoe)
waterproof/breathable gaiters (Rab Hispar eVENT)
non-waterproof low cut trail runners

I've also been experimenting with using a strong antiperspirant (Certain Dri) on my feet for a week before the trip to keep my socks even drier.

Except for the gaiters, I used this on a 3 day trip last winter (West Virginia) where the snow was 0-25 inches (no snowshoes) and temps 15-63F. My only issue was that my pants were wet from the inadequate non-waterproof gaiters I was using. A partially wool base layer made the wet pants only slightly uncomfortable rather than being a serious issue. (I had waterproof breathable pants, but didn't really need them.)

For that general area daytime temperatures somewhere between 5°C–7°C would seem normal during the dates of your planned trip (altitude will be a bigger variable than latitude), but it also wouldn’t be surprising to see temperatures ranging from -7°C to 15°C. My recommendation would be for a lightly insulated leather or leather and fabric boot. I would recommend against a boot with a rubberized bottom. I would think they would be a bit miserable should you have to wear them through a warm spell. If your feet don’t run cold uninsulated footwear would probably do so long as you wear some warm socks.

In the Southern Appalachians if you are out more than a few days you will most likely get caught in a downpour at least once and on most days you will have to ford numerous streams both large and small. I prefer footwear that do not include a waterproof membrane because the chances that some of that water is going to make its way into my boots (yes, even while wearing gaiters) and turn them into buckets are pretty high. Of course, for a multiple day slog through wet snow waterproof footwear would be preferred, and there aren’t many non-waterproof insulated boots on the market.

Road Prong Trail, 13 January 2010.

Fording the Chattooga on New Year’s Day, 2011.

I've found that a pair of thin neoprene diver's socks (that I've seam sealed) are the best and most durable VBL liners I've ever used.

They give a lot of warmth with the insulating neoprene foam and always keep moisture out of my boots. At night I remove them and my thin polypro liner sox and turn the VBLs inside out to dry them before putting them in the foot of my sleeping bag. I put on a new pair of polypro liner sox and heavy "sleeping sox" for night.

Come morning I remove the sleeping sox & put the dry VBLs over the liner sox.