遊ゆう水すい地ち

noun

retarding basin; flood-control pond

A manmade pond or basin designed to temporarily store excess rainwater and prevent flooding. Used in civil engineering and disaster prevention contexts.

• この遊ゆう水すい地ちは大おお雨あめのときに川かわの水みずを一いち時じ的てきにためる役やく割わりをしている。

  This retarding basin temporarily stores river water during heavy rain.

• 市しは洪こう水ずい対たい策さくとして新あたらしい遊ゆう水すい地ちを建けん設せつした。

  The city built a new flood-control pond as a flood countermeasure.