1920 plat map showing the Middletown feeder channel for the Miami & Erie Canal and Middletown Hydraulic. Note the detail of the headgate structure which remains today. The lock at the bottom left is Dine's lock #31. Note how the feeder put most of the water into the canal below Dine's lock, but there's a small channel to inject water above the lock. Lower Greenland lock #30 is to the right. The feeder for the Warren County Canal came off that lock's spillway. Verity Parkway today roughly follows the route of the Ohio Electric Railway and the canal follows Tytus Avenue.