Sheridan Lake, Deerfield , Stockade, Pactola careful on the ice it has been inconsistent. Orman/Belle Fourche Reservoir for walleye, careful on the ice here as well.
ATV should be good on the Hills lakes. They have been all over Sheridan for a month. I wouldn't drive on Orman/Belle Fourche. Fished it a couple of weeks ago and was on 12 inches, talked to some other guys that were on 6 so it is pretty variable. It also has frozen, thawed and refrozen. A lot of areas with honeycombed ice that has frozen back together.