Im not an “Ohioan” or more aptly put, a Buckeye. But I lived in Indiana right near the Ohio/Indiana state line most all of my life until a couple of years ago. There are no natural lakes I know of in Ohio. Might be a few small ones somewhere, but nothing I ever heard of. Fishing pretty much sucks in Ohio, with the exception of Lake Erie of course…guess youd say its a natural lake.