We have the same problem in Ohio. Only a small handfull of streams/rivers have actually been deemed navigable. If the stream is not listed as navigable you could be charged with trespassing and would have to prove the stream is navegable. It usually must be done at a higher court of appeals so the stream can be listed as navigable. The Ohio Smallmouth Alliance just had a speaker from the ODNR division of water speaking on this very subject. It was a great talk and we also shared some stories, mostly about one stream in particular.
Regards, Mike
