流域 (Ryuuiki) is a Japanese noun meaning “drainage basin, catchment basin, river basin, watershed”.
Meanings
- noundrainage basin; catchment basin; river basin; watershed; valley
Examples
ダムが切れて流域に大水が押し寄せた。
The dam gave way and sent a great flush of water down the valley.
激しい雨がその流域に洪水をもたらした。
The heavy rain brought floods in the valley.
Sentences from Tatoeba (CC BY 2.0 FR).