is a dam

Dam

A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

 in Takayama

Takayama, Gifu

is a city located in Gifu, Japan. As of July, 2011 the city has an estimated population of 92,369. The total area is .Takayama was settled as far back as the Jōmon period. Takayama is best known for its inhabitants' expertise in carpentry. It is believed carpenters from Takayama worked on the...

, in the Gifu Prefecture

Gifu Prefecture

is a prefecture located in the Chūbu region of central Japan. Its capital is the city of Gifu.Located in the center of Japan, it has long played an important part as the crossroads of Japan, connecting the east to the west through such routes as the Nakasendō...

 of Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. It supports a 215 MW hydroelectric power station

Power station

A power station is an industrial facility for the generation of electric energy....

.

The dam flooded several villages and shrines, submerging them completely, two cherry trees were taken from one of the submerged shrines and placed in Shirakawa-go where it's said that each petal represents a memory from someone who lived in the villages before they were flooded.