Japanese word

流域

Pronunciation

Romajiryūiki

この川の流域には多くの町があります。ko no kawa no ryū iki ni wa ō ku no machi ga a ri ma su

There are many towns in this river basin.

大雨の後、流域の水位が急に上がりました。ō ame no ato ryū iki no sui i ga kyū ni a ga ri ma shi ta

After the heavy rain, the water level in the river basin rose suddenly.

Covers the land whose water naturally flows toward the same river and its connected channels.

集水域shūsuiiki: Land where water gathers and flows toward the same outlet, such as a river or reservoir.

降った雨などが同じ川へ流れ込む地理的な範囲。fu tta ame na do ga ona ji kawa e naga re ko mu chi ri teki na han i

The word combines 流 (ryū, "flow") with 域 (iki, "area"), giving the sense of a region related to flowing water.

The geographic sense of watershed is common in environmental reports, while its other sense describes a decisive turning point.