x2 on the Sportsman's books. If you're recently transplanted each book has all (nearly) fishable waters in an area along with tips, guide advice, access....lots of good stuff. Really nice for if you get a wild hare and want to go on an adventure to a new lake.
Additionally if you're only interested in one specific body try Fishing Hot Spots map. Pretty much the same thing. They're waterproof and easy to carry but at $4-6 each the book is a better value.
The maps on the DNR site are pretty bare bones but will give you a basic idea of lake contours.
http://dnr.wi.gov/lakes/maps//mike
