Denshi Jisho — Online Japanese dictionary

Found 3 sentences.

河川豪雨氾濫しました The rivers were flooded by the heavy rain.
河川盆地には普通肥沃な農地ある The basin of a river usually has rich farmland.
日本多く河川工場廃液汚染されている Many rivers in Japan are polluted by waste water from factories.