Yamagami Dam is a gravity concrete & fill dam (compound) dam located in Fukuoka Prefecture in Japan.

The dam is used for flood control and water supply.

The dam impounds about 18 ha of land when full and can store 2980 thousand cubic meters of water.

The construction of the dam was started on 1968 and completed in 1979.

This article about a dam or floodgate on Kyushu, Japan is a stub.