Unique Dam

Ozuchi Dam

This dam is a multipurpose dam rock fill dam to stop the Yasu River. There are no other dam with two spillways like this in the world.

Ozuchi dam has a very unique shape among Japanese Dams. It looks a little like a morning glory pattern, but this is a semicircle.The area around Ozuchi Dam is well developed, and on holidays, it is crowded with people who enjoy themselves in the camp site and swan boats.

The lake shore is a park and there is a floating pier in the dam lake. It is called Blue River Park floating pier. You can cross the dam lake while swaying according to the swaying water surface.

Address: Ozuchi, Tsuchiyama-cho, Koka City, Shiga Prefecture 528 0221
Access: (1) 45 minutes by car from JR Kibukawa Station (Immediately get off Aoto or Eko Valley of Aikuru Bus.)
(2)15 minutes by car from Koga-Tsuchiyama IC on the Shin-Meishin Expressway.

Honenike Dam

The Honenike Dam is the oldest stone masonry multiple arch dam in Japan located in Kannonji, Kagawa Prefecture. This dam was designated as a national important cultural property (Buildings) in 2006.

It is reinforced with concrete in the upstream. In the downstream area, old stone masonry remains.


There are only two multi arch dams in Japan, including Okura Dam in Sendai City, Miyagi Prefecture. At that time, the newest technology in the United States, the multiple arch, was applied. It is a valuable building in the history of civil engineering and dam technology.

Address: Tanono, Onohara-cho, Kannonji City, Kagawa Prefecture     Access:20 minutes by car from JR Shikoku Kannonji Station.
15 minutes by car from Takamatsu Expressway Onohara IC.

Hakusui Tameike Entei

The Hakusuite-Ikeentei Dam is a gravity concrete and stone dam in the upper reaches of the Ono River in Takeda City, Oita Prefecture.
It was designated as a national important cultural property on May 13, 999. It is commonly called Hakusui Dam.

The beauty of the water flow created by this dam and the flow paths at both right and left ends is highly appreciated. Some researchers say it is the most beautiful dam in Japan.

Adress: Left bank: Oaza Kashiwara, Ogimachi, Takeda City, Oita Prefecture
Right bank: Oaza Tsugikura, Takeda City, Oita Prefecture Access:
1) Approximately 25 minutes by car from Tamaki Station on the JR Hohi Line (The road around the reservoir is bad, so the road from the downstream of the river to just under the dam is recommended.)
2) Approximately 30 minutes by car from Kami-Takeda Station

Kurobe Dam

Kurobe Dam is the largest dam in Japan built in Kurobe Gorge.
You must be overwhelmed by the huge building with beautiful arches and the tremendous water discharge!

The dam had completed by 10 million people’swork for 7 years. This is said to be a great project of the century. Go up the next 200 steps and you will get to the observation deck. Every year from June 26 to October 15, you can see the tourist discharge from the dam.

Address: Ashikuraji, Tateyama-machi, Nakanikawa-gun, Toyama
Access: 16 minutes by trolley bus from Ogizawa Station
*From Tateyama Station, take the Tateyama Kurobe Alpine Route for approximately 2 hours and 45 minutes.
*Ogizawa – Kurobe Dam – Kansai Electric Tunnel Trolley bus 16 minutes, short walk from Kurobe Dam Station