Denshi Jisho — Online Japanese dictionary

Found 3 sentences.

洪水何百という冠水した Hundreds of fields were submerged in the flood.
多く道路冠水、そ結果大幅な遅れ出ている Many roads are flooded. As a result there are long delays.
学校行く冠水してしまって、回りしていかなければならなかった The street to school was flooded and we had to go around.