Yatsushiro

Yatsushiro lies in the southern part of the Kai basin, where rivers descend from the mountains onto broad fans. The early Takeda governors of Kai held their centre around Isawa in this district before their later residence at Kōfu. The Kanegawa fan was short of irrigation water, and disputes over its use led to arrangements dividing water by time and channel. Its fields depended on careful sharing of a limited supply.