lock gates

Lock gates are large, movable barriers that control water levels and allow boats to pass between sections of a waterway with different heights, such as a canal or river. When a boat approaches, the gates close to contain the water, and then the water level inside the lock is adjusted by adding or removing water. Once the water levels are equalized, the gates open, allowing the boat to continue on its journey at the new elevation. Lock gates are essential for navigation in areas with changes in water height, ensuring safe and efficient passage for vessels.