Ninosawa Dam
Ninosawa Dam  is an earthfill dam located in Hokkaido Prefecture in Japan. The dam is used for irrigation. The catchment area of the dam is 0.9 km2. The dam impounds about 5  ha of land when full and can store 304 thousand cubic meters of water. The construction of the dam was started on 1923 and completed in 1925. References

Dams in Hokkaido