The Mamigasaki River, which originates from the mountains of Zao and Gango, formed river terraces in hilly areas, and alluvial fans based on antigen.
On the other hand, because of the large steps and bends and the strong permeation, Yamagata City was often hit by floods due to heavy rain in the past.
Midoricho and the Namerikawa building complexes are areas that were reclaimed using riverbed soil that was dredged* to create a strong embankment.

Speaking of Mamigasaki river, it is a place that is crowded with the Yamagata autumn tradition of imoni parties!
At the Yamagata Imoni Festival held in September every year, beef and taro stew is made using a large pot with a diameter of over 6 meters and a mobile crane-equipped backhoe.
The dynamic scenery is worth seeing.

*Dredging (removing sediment and sludge from the riverbed)