South lake in Sabula and Rock Creek south of Camanche are a couple more places with relatively easy access. I've heard some people fish the marina in Camanche but I've never been out there.
On the Illinois side there's Mickelsons landing and the Big Slough area, both near Thomson. It's been slow lately, was at Big Slough today, fished most of the day with a buddy and only had 6 perch between us.