Sannosawa No.1 Dam
Sannosawa No.1 Dam  is an earthfill dam located in Hokkaido Prefecture in Japan. The dam is used for irrigation. The catchment area of the dam is 1.6 km2. The dam impounds about 11  ha of land when full and can store 710 thousand cubic meters of water. The construction of the dam was completed in 1924. References

Dams in Hokkaido