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Old Windsor Lock is a lock on the River Thames in England on the right bank beside Old Windsor, Berkshire. The lock marks the downstream end of the New Cut, a meander cutoff built in 1822 by the Thames Navigation Commissioners which created Ham Island. The lock and a wider footbridge give access to the island. Two weirs are associated; the ...
Richmond Lock is managed by the Port of London Authority. Most of the Environment Agency's locks and weirs are staffed by a lock keeper, who often lives in a house adjacent to the lock. The lock keeper's duties involve both operating the lock, and managing the river levels above the lock by adjusting the weir openings.
A further lock with a low-tide barrage (rather than a weir) was built by the Thames Conservancy in 1894 downstream at Richmond Lock to improve the navigation by maintaining water level upstream to at least half-tide level. Today, the Port of London Authority is the navigation authority that manages the tidal river, including Richmond Lock and ...
A small minority of list entries are referred to as Island, Ait or Eyot and are vestiges, separated by a depression in the land or high-water-level gully. Most are natural ; others were created by excavation of an additional or replacement navigation channel, such as to provide a shorter route, a cut .
Old Windsor lies on the south bank of the River Thames, 2.5 miles (4.0 km) southeast of the town of Windsor and 20 miles (32 km) west-southwest of London. It is near to the villages of Englefield Green and Datchet, and is connected by a towpath to Old Windsor Lock.
Conception to fruition took about 20 years. Water is admitted to the river through sluice gates at the upstream end of the channel near Taplow. This is normally controlled by measurements of the water levels below Boulters Lock and the estimated flow of the Thames at the Datchet gauging station near Windsor. The first serious test of the new ...
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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.