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A plan and side view of a generic, empty canal lock. A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates.The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.
At the left of the existing locks is the construction area for the new set of locks with water-saving chambers, part of the Panama Canal expansion project which opened for traffic in June 2016. [ 2 ] v
These gates can be lowered to block additional flow of water from the Mohawk River through the locks to prevent damage during floods. [3] The locks have undergone periods of major restoration in recent decades, including replacement of lock doors and resurfacing of the concrete within the locks themselves.
The Chicago Harbor Lock, also known as the Chicago River & Harbor Controlling Works, is a stop lock and dam located within the Chicago Harbor in Chicago, Illinois at the mouth of the Chicago River. It is a component of the Chicago Area Waterway System , and is used to control water diversion from Lake Michigan into the river and for navigation.
A New Panamax ship passes through the Panama Canal's Agua Clara lock in 2019. The Atlantic Bridge is seen in the background.. The Panama Canal expansion project (Spanish: ampliación del Canal de Panamá), also called the Third Set of Locks Project, doubled the capacity of the Panama Canal by adding a new traffic lane, enabling more ships to transit the waterway, and increasing the width and ...
The caisson lock is a type of canal lock in which a narrowboat is floated into a sealed watertight box and raised or lowered between two different canal water levels. It was invented in the late 18th century as a solution to the problem posed by the excessive demand for water when conventional locks were used to raise and lower canal boats ...
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Most locks are closed by chevron or mitre gates rather than by caissons. These are pairs of hinged gates that form a "V" shape, with the deeper water outside the V. Water pressure thus holds them closed. These gates can be opened and closed quickly, so they are used for canal locks, to change levels, and also for most freight docks.