The Miami and Erie Canal was a 274-mile (441 km) canal that ran from Cincinnati to Toledo, Ohio, creating a water route between the Ohio River and Lake Erie. Construction on the canal began in 1825 and was completed in 1845 at a cost to the state government of $8 million ($270 million in 2024). At its peak, it included 19 aqueducts, three guard locks, 103 canal locks, multiple feeder canals, and a few man-made water reservoirs. The canal climbed 395 feet (120 m) above Lake Erie and 513 feet (156 m) above the Ohio River to reach a topographical peak called the Loramie Summit, which extended 19 miles (31 km) between New Bremen, Ohio to lock 1-S in Lockington, north of Piqua, Ohio. Boats up to 80 feet long were towed along the canal by mules, horses, or oxen walking on a prepared towpath along the bank, at a rate of four to five miles per hour.
Because of competition from railroads, which began to be built in the area in the 1850s, the commercial use of the canal gradually declined during the late 19th century. It was permanently abandoned for commercial use in 1913 after a historic flood in Ohio severely damaged it. Only a small fraction of the canal survives today, along with its towpath and locks. The historically German-American Cincinnati neighborhood north of the canal called "Over the Rhine" got its name from immigrants who crossed the canal daily and nicknamed it after the river Rhine in Germany.
