氾濫

noun

for water levels to increase and overflow; a flood, flooding / for many undesirable things to appear; an overflow

昨夜の大雨で川が氾濫しました。

The river overflowed due to the heavy rain last night.

意味（1）

for water levels to increase and overflow; a flood, flooding

意味（2）

for many undesirable things to appear; an overflow