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Erie Canal Locks at Lockport, Horses and Mules on the Towpath, c. 1890s
About this Activity
Lesson Topic:
A lock is an enclosure with a gate at each end that is used to raise or lower boats from one water level to another on a river or canal. A boat enters a lock through one gate. The gate is then closed, and the water level in the lock rises or lowers until it is equal to the water level on the opposite side. The gate on the opposite side opens, and the boat can continue on its journey.