Nakanosawa Dam
Nakanosawa Dam  is an earthfill dam located in Hokkaido Prefecture in Japan. The dam is used for irrigation. The catchment area of the dam is 10.2 km2. The dam impounds about 16  ha of land when full and can store 948 thousand cubic meters of water. The construction of the dam was completed in 1937. References

Dams in Hokkaido