Then, he conducted a large scale flood control construction based on a topographic investigation to create the three major rivers in Fukui Prefecture; Kuzuryu River, Asuwa River, and Hino River, and he successfully developed the wetland.
次に地形を調査のうえ、大規模な治水を行い九頭竜川・足羽川・日野川(福井県)の三大河川を造ることで湿原の干拓に成功した。