Saw some people out the other night when I was out on a date with the missus. Guys were catching smallies and carp between Main and Webster.
Of course, upstream, if you noodle around with Google maps, there's a fantastic spot to gain access to the spillway from the back parking lot of some offices. Otherwise, it's quite a hike from the entrance of McDowell forest preserve. I've caught some nice smallies on a nice sunny day under the spillway.