Yamauchi Dam is an earthfill dam located in Chiba Prefecture in Japan.

The catchment area of the dam is 0.6 km2.

The dam impounds about 90 ha of land when full and can store 360 thousand cubic meters of water.

The construction of the dam was started on 1997 and completed in 2004.

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