They'll still be along the water ways. Poking along the banks, running the shelf ice, going into the water anyplace they can get under the ice, ect.
If you want to catch them after ice up, you still can. Do a search and check out the archives on the "bottom edge set".
-Skunkly-
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"No way guys...my cod-piece is the coolest!" Toki, member of DethKlok on the show Metalocalypse