Right on the Mississippi!
Wildcat is near decent fishing in Brownsville and Reno. Didn't really like many of the campsites here (too many rvs/trailers/genarators and too cramped).
The boat landings at Wildcat are in prime locations and you really have great access to the river. I'd recommend just using the park for it's boat landing. Wildcat does have a small beach and a shelter near the river.