Finally opened
in 1829 with a length of 13-5/8 miles the four locks located at
Delaware City and St. Georges in Delaware and Chesapeake City
in Maryland were used to raise and lower the shipping traffic
to the elevations of the Delaware River and Chesapeake Bay ends
of the waterway.
Soon mules
were pulling barges of coal and lumber through town each week.
By 1854 it became important that the locks be enlarged to accommodate
additional traffic. The 22-foot wide lock that remains at Delaware
City dates from this time period.