Flood gate

Flood gate of a segment weir on the Ohio River

Flood gates are gates that can be opened and / or closed to control a flow of water. Depending on the system, they are used to keep water out (e.g. at sea locks ), to let it through (e.g. as part of weirs ) or to let it free (e.g. on retention areas ). In particular, in sea locks, the outer, outer gate, which is supposed to hold back the tide, is called the flood gate, while the inner, inner gate (although it also fulfills the definition of a flood gate) is called the ebb gate because it has the task of opening the tide at low tide Keep the water level higher on the land side.

photos

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  Tokyo : flood gate against storm surges

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  Vienna : Flood gates of the Langenzersdorf inlet structure to regulate the Danube

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  Wivenhoe Dam : flood gates for draining water peaks

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  Bremen : rotating wing flood gates on a dyke

Individual evidence

1. ↑ Fluttor - English translation in English - Langenscheidt dictionary German-English. In: de.langenscheidt.com. Retrieved November 17, 2017 . 
2. ↑ floodgate meaning in the Cambridge English dictionary. In: dictionary.cambridge.org. Retrieved November 17, 2017 . 
3. ^ Floodgate - Definition of Floodgate by Merriam-Webster. In: merriam-webster.com. Retrieved November 17, 2017 . 
4. ^ Lock [1]. In: Zeno.org. Contumax GmbH & Co. KG, accessed on November 17, 2017 . 
5. ↑ Hydraulic engineering and water management in Germany: past and present - Rolf Meurer - Google Books. In: Google Books. Retrieved November 17, 2017 .