floodplain

Noun

(geography) An alluvial plain adjacent to a river formed by flooding during periods of high rain.

Japanese Meaning

洪水により形成される、河川近くの堆積性平野（氾濫原）

The village that once sat on the floodplain was rebuilt on higher ground after the spring floods.

その村はかつて氾濫原にあったが、春の洪水の後、より高い場所に再建された。

Sense（1）

(geography) An alluvial plain adjacent to a river formed by flooding during periods of high rain.

floodplains

（ plural ）