catchment-area

US /ˈkætʃ.mənt ˌer.i.ə/
UK /ˈkætʃ.mənt ˌer.i.ə/
1.

vùng có nước mưa rơi xuống

the area of land from which water flows into a river, lake, or reservoir:

:
There has been a lot of recent rainfall in the catchment area of the river.