The Nōbi Plain (濃尾平野, Nōbi Heiya) is a large plain in Japan that stretches from the Mino area of southwest Gifu Prefecture to the Owari area of northwest Aichi Prefecture, covering an area of approximately 1,800 square kilometres (695 sq mi). It is an alluvial plain created by the Kiso Three Rivers (the Ibi, Kiso and Nagara rivers) and has very fertile soil. It is bordered on the west by the Ibuki and Yōrō mountain ranges, and to the east by the Owari Hills.