|The Agde Round Lock (French: L'Écluse Ronde d'Agde) on the Canal du Midi connects to the Hérault River in Agde France. It is unique because it is round, which allows a boat to turn around, and the fact that it has three sets of lock gates, each with a different water level. It was built in 1676 of volcanic stone and was originally 29.20 m in diameter, 5.20 m deep.
The lock is no longer round. It was expanded during a program begun in 1978 to expand locks to the Freycinet_gauge to allow for barges up to 38.50 meters long.
Originally, buildings in the area of the lock included an administration building, stables, shops, and a chapel.
The exits are west to Beziers, east to Etang de Thau and south to the Mediteranian.
A second French round lock can be found in Lorraine Region of France.
Location: Narbonne, France
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