Likely too low. (Likely no real whitewater play available.)
A WIDE dam in Rockton dam diverts most of the flow into a canal (to river left). It would take significant (higher than normal late-spring/summer flow) to have enough water passing over the dam to make it anything other than a scrape down the sloping face. It would take a significant amount of scouting, at a wide variety of flows, to find meaningful play here. At the right flows, it is entirely likely there may be a few spots which could offer some play, but there will also be numerous spots which would be just plain nasty (keepy). We would urge great caution for anyone opting to play at this dam on the Rock River at Rockton.
(Listed distance is road miles from Indianford, not river miles.)
See separate listing for this location (in Illinois).