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Teddington Lock
Teddington Lock is a complex of three locks and a weir on the River Thames in England at Ham in south west London. The lock is on the southern side of the river.
The river downstream of the lock, known as the Tideway, is tidal, though the Richmond Lock barrage downstream limits the fall of water to maintain navigability at low tide. The boundary point between the Port of London Authority, which is the navigation authority downstream, and the Environment Agency, which is the navigation authority upstream is marked by an obelisk on the Surrey bank a few hundred yards below the lock. Though Teddington marks the tidal limit, in periods of very high fluvial flow the tidal influence can be seen as far upstream as East Molesey, location of the second lock on the Thames.〔(【引用サイトリンク】title=Operation of the Thames Barrier )〕
The Teddington lock complex consists of three locks, a conventional launch lock, a very large barge lock and a small skiff lock. The barge lock has an additional set of gates in the middle so it can operate in two sizes.
The large bow shaped weir stretches across to Teddington from an island upstream of the lock which also acts as the centre point for the two bridges making up Teddington Lock Footbridge.
==History==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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