水門(すいもん)

すいもん
noun
sluice gate; floodgate; water gate
1. sluice gate; floodgate; water gate
A gate or barrier used to control the flow of water in rivers, canals, dams, or irrigation systems.
水門(すいもん)を開(あ)けた。
They opened the floodgate.
大雨(おおあめ)に備(そな)えて水門(すいもん)を閉(し)めた。
They closed the sluice gate in preparation for heavy rain.
この川(かわ)には洪水(こうずい)を防(ふせ)ぐための水門(すいもん)がいくつも設置(せっち)されている。
Several floodgates have been installed along this river to prevent flooding.

A compound of 水(すい) (water) + 門(もん) (gate). A gate or barrier used to control water flow in rivers, canals, and dams.

COMMON COLLOCATIONS:

  • 水門(すいもん)を開(あ)ける: to open a sluice gate
  • 水門(すいもん)を閉(し)める: to close a sluice gate
  • 防潮(ぼうちょう)水門(すいもん): tidal floodgate
  • 排水(はいすい)水門(すいもん): drainage gate

IN JAPAN:
Japan's many rivers and flood-prone geography make 水門(すいもん) critical infrastructure. They are frequently mentioned in news during 台風(たいふう) (typhoon) season and 大雨(おおあめ) (heavy rain) events.

RELATED:

  • ダム: dam
  • 堤防(ていぼう): levee, embankment
  • 放水(ほうすい): water discharge
  • 治水(ちすい): flood control
general
Added 2026.3.23 19:22 · Revised 2026.4.2 19:36
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