Dont think I have ever seen a web site dedicated to that. Most ice reports are in local fishing reports. Like Scott said make a post on hear and see what replys you get. Any ice reports you get make sure and double check yourself. Last week I read some local reports about decent ice. After following a path out on the lake the 1st hole drilled was about 2″ of ice. 30′ over it was the good ice I had heard of.
Lake Link seems to have more small lake reports, if that is what you are looking for. Just punch up fishing reports for Wisconsin and do a search for the lake you want, I have found more specific lake info there if you want to give it a try….