This is the 2674th most frequent Korean word.
수해
Flood damage.
수해 is used here to indicate damages caused by flooding as a natural disaster.
올해 여름은 수해로 많은 피해를 입었습니다.
This summer, there was extensive damage due to flood disasters.
In this sentence, 수해 describes areas affected by flooding, primarily as a noun modifying the regions.
수해 지역에 봉사 활동을 가기로 결정했습니다.
I decided to go volunteer in the flood-affected regions.
Here, 수해 specifies the nature of the recovery efforts as related to flood damages.