Shimoyu Dam is a rockfill dam located in Aomori Prefecture in Japan.

The dam is used for flood control and water supply.

The dam impounds about 63 ha of land when full and can store 12600 thousand cubic meters of water.

The construction of the dam was started on 1971 and completed in 1988.

This article about a dam or floodgate in Tōhoku region of Honshu, Japan is a stub.