Yamaguchi Dam (Japanese: 山口ダム) is one of a dozen or so dams on the Kiso River in the Nagano Prefecture, Japan.

[1] The word yamaguchi (山口) means "Mountain Pass", and is a common place name in Japan.

There are several dams with this name; for a list, see ja:山口ダム The corresponding word in Chinese, written with the same characters, is read shankou.

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