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2. Lock (water navigation) - Wikipedia

   en.wikipedia.org/wiki/Lock_(water_navigation)

   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.

3. Caisson lock - Wikipedia

   en.wikipedia.org/wiki/Caisson_lock

   Operation of caisson lock Contemporary engraving of the lock at Combe Hay. 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 ...

4. Chicago Harbor Lock - Wikipedia

   en.wikipedia.org/wiki/Chicago_Harbor_Lock

   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.

5. Okeechobee Waterway - Wikipedia

   en.wikipedia.org/wiki/Okeechobee_Waterway

   St. Lucie Lock and Dam on the Okeechobee Waterway, approximately 15 miles (24 kilometres) southwest of Stuart, Florida.According to the lock webpage by the U.S. Army Corps of Engineers, the lock chamber is "50 feet wide x 250 feet long x 10 feet deep at low water", [2] showing that the design of the canal system and waterway is for shallow barges and not a ship canal.

6. Panama Canal locks - Wikipedia

   en.wikipedia.org/wiki/Panama_Canal_locks

   24-hour time-lapse of the upper chamber of the Miraflores Locks. The lock chambers are 110 ft (33.53 m) wide by 1,050 ft (320 m) long, with a usable length of 1,000 ft (305 m). [4] These dimensions determine the maximum size of ships that can use the canal; this size is known as Panamax.

7. Locks on the Chesapeake and Ohio Canal - Wikipedia

   en.wikipedia.org/wiki/Locks_on_the_Chesapeake...

   The advantage here is that the lock can fill faster with the wickets being in the gate, but will not swamp a boat in the lock chamber. In the 1830 design locks, the upper and lower gates are both the same height. [15] The majority of locks on the C&O canal are to this specification.