治ち水すい工こう事じ

noun

flood-control works; riparian works

Refers to civil engineering projects aimed at controlling rivers, preventing floods, and managing waterways. Often used in news and technical contexts.

• この地ち域いきでは治ち水すい工こう事じが進すすめられている。

  Flood-control works are being carried out in this area.

• 治ち水すい工こう事じのおかげで川かわの氾はん濫らんが減へった。

  Thanks to the riparian works, river flooding has decreased.