These gates are found in the Erie Canal in Pittsford, NY.

The Erie Canal is a waterway in New York that runs about 363 miles (584 km) from Albany, New York, on the Hudson River to Buffalo, New York, at Lake Erie, completing a navigable water route from the Atlantic Ocean to the Great Lakes. The canal contains 36 locks and encompasses a total elevation differential of around 565 ft. (169 m). First proposed in 1807, it was under construction from 1817 to 1825 and officially opened on October 26, 1825.

It was the first transportation system between the eastern seaboard (New York City) and the western interior (Great Lakes) of the United States that did not require portage, was faster than carts pulled by draft animals, and cut transport costs by about 95%. The canal fostered a population surge in western New York state, opened regions farther west to settlement, and helped New York City become the chief U.S. port. It was enlarged between 1834 and 1862. In 1918, the enlarged canal was replaced by the larger New York State Barge Canal. (courtesy of Wikipedia)