Your best bet is a USGS mineral map for your county, Jared (and just add other counties as you decide to go to them). Those will mark off old mines, too. You will want to start by prospecting tributaries that run downhill and down stream from the mines first. When they blasted the mines some of the gold got blasted out but not recovered, so there's probably concentrations sitting down from the mines just waiting for recovery. The stuff sinks pretty fast so don't get the idea of just walking in and scooping a bit of dirt from the surface of the stream beds.
Now is a great time to put up gold traps, though - if you can get through the snow if it's there right now. If you can't you want to get them set up before spring run-off if you can. Also make sure you put them where nobody is likely to come by and hock them on you. If you can trap the gold as it is pushed downstream in spring thaws, it makes life a lot easier. Of course, for the nuggets you want to go deep, but finding where the gold is settling takes a lot of work out of guessing where to dig in, too. If you put one trap up and it's not getting anything, but the one upstream is, you know that the gold is dropping somewhere before it gets to the empty trap. If you get a good settle from the other trap, it might be a good place to start digging deeper.
You probably read already to start looking in areas where current slows from being swift enough to carry the gold with it. Bends, rock barriers, at the bottom of little water falls, etc. Ya might want to drop a line to Steve Cantiello (glowing rocks). I think he's panned before if I remember right. If not, I'm betting he knows prospectors in your neck of the woods that might be willing to go with you some time and show you some of the ropes. Steve's in NY and hunts regions like yours. We never got up that way together, but had I known you then, we'd have been up to see you for sure.