Will be in the Dells late June.

[oldtimer]

I haven't dove Devils Lake in a couple of years, but It can be fun to work your way down the East side by the railroad tracks and feed the Bass.  Good hiking trails too for between dives.  As mentioned Wazee is certainly worth a look as is Lake Michigan.  Kenosha to Sheboygan has a whole passel of interesting wrecks to dive.  The only draw back is either a boat or a charter are required.  You could drive up to Door county and spend a weekend or two doing the various shore dives.  Plus up there there is always somewhere to dive regardless of wind direction.  Have fun and dive safe.