Hey Raw,

Being a lifelong Westsider of Cleveland (re: Rocky River) I can with 99.9% certainty that there are no liveries on the Rocky River. Now the Rocky River does run thru what we call the Emerald Necklace. It is a "gem" of a place that encircles Cleveland throughout Cuyahoga County. It is taken care of by the Cleveland Metroparks. There are a couple of lakes up here that are fed by the RR and they do have boat rentals.

http://www.clemetparks.com/

There is a Rocky River fishing report you can access from the above site; but just in case time is not on your side:

"...or if you have any further questions regarding fishing in the Cleveland Metroparks, you may contact Aquatic Biologist Mike Durkalec at (440) 331-8017 or md@clevelandmetroparks.com." (taken from the fishing report)

As Joe and Mike said the rivers up here are running low and slow right now. This site can give you all of Ohio's rivers info:

http://waterdata.usgs.gov/oh/nwis/rt/

I'm not trying to disuade you from visiting with gloom and doom reports. Trust me there is alot up here to do, and whatever you chose you will have a great time.

Jim