Open the low gate.
The water is the same height on both sides.
Learn how a canal lock lifts a boat up a hill, one step at a time.
A boat can’t climb a hill.But water can lift it.Discover how…
Open the low gate.
The water is the same height on both sides.
A canal lock is a water lift for boats. With both gates shut, the lock is a box of water. Let water in and the boat floats up. Let it out and the boat goes down.
A gate only opens when the water is the same height on both sides. Until then, the water pushes it shut. Look for a lock on a river or canal near you, and watch it work.