The is a major tributary of the

Agano River The is a river in the Hokuriku region of Honshu, Japan. It is also called the Aga River or the Ōkawa River in Fukushima. The source of the river is Mount Arakai on the border of Fukushima and Tochigi. It flows to the north and meets the Nip ...

in Japan. Its basin covers and its main stem is extensively regulated and developed for hydroelectric power. The river is located within Niigata,

Gunma is a prefecture of Japan located in the Kantō region of Honshu. Gunma Prefecture has a population of 1,937,626 (1 October 2019) and has a geographic area of 6,362 km2 (2,456 sq mi). Gunma Prefecture borders Niigata Prefecture and Fukushima P ...

and

Fukushima Prefecture Fukushima Prefecture (; ja, 福島県, Fukushima-ken, ) is a prefecture of Japan located in the Tōhoku region of Honshu. Fukushima Prefecture has a population of 1,810,286 () and has a geographic area of . Fukushima Prefecture borders Miya ...

Dams

Starting from the furthest upstream, the river is dammed by: *

Okutadami Dam The Okutadami Dam (奥只見ダム) is a concrete gravity dam on the Tadami River, east of Uonuma on the border of Niigata and Fukushima Prefectures, Japan. The primary purpose of the dam is hydroelectric power generation and it supports a 560 M ...

– tall

gravity dam A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. ...

, 560 MW * Otori Dam – tall

arch-gravity dam An arch-gravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam. It is a dam that curves upstream in a narrowing curve that directs most of the water pressure against the canyon rock walls, providing the ...

, 182 MW *

Tagokura Dam Tagokura Dam (田子倉ダム) is a gravity dam, on the Tadami River in the Fukushima Prefecture of Japan. It is owned and operated by the Electric Power Development Company (J-Power). The lake which it impounds is known as Lake Tagokura. The ...

– tall gravity dam, 380 MW *

Tadami Dam Tadami Dam is a rock-fill embankment dam on the Tadami River The is a major tributary of the Agano River in Japan. Its basin covers and its main stem is extensively regulated and developed for hydroelectric power. The river is located within ...

– tall

embankment dam An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface and ...

, 65 MW *

Taki Dam is a gravity dam on the Tadami River, east of Tadami in Fukushima Prefecture, Japan. Surveys for the dam were carried out in 1958, construction began in 1959 and the dam was complete in 1961. The primary purpose of the dam is hydroelectric p ...

– tall gravity dam, 92 MW *

Honna Dam is a gravity dam on the Tadami River in Kaneyama, Fukushima Prefecture, Japan. It was constructed between 1952 and 1954 for the purpose of hydroelectric power generation. It supplies a 78 MW power station with water. See also *Uwada Dam ...

– tall gravity dam, 78 MW *

Uwada Dam Uwada Dam is a gravity dam on the Tadami River The is a major tributary of the Agano River in Japan. Its basin covers and its main stem is extensively regulated and developed for hydroelectric power. The river is located within Niigata, Gun ...

– tall gravity dam, 63.9 MW *

Miyashita Dam Miyashita Dam is a gravity dam on the Tadami River upstream of Mishima in the Fukushima Prefecture of Japan. It was constructed between 1941 and 1946 for the purpose of hydroelectric power generation. It supplies a 94 MW power station with wa ...

– tall gravity dam, 94 MW *

Yanaizu Dam Yanaizu Dam is a gravity dam on the Tadami River upstream of Yanaizu in the Fukushima Prefecture of Japan. It was constructed between December 1952 and August 1953 for the purpose of hydroelectric power generation. It supplies a 75 MW power ...

– tall gravity dam, 75 MW *

Katakado Dam Katakado Dam is a gravity dam on the Tadami River west of Aizubange Eryū-ji temple in Aizubange is a town located in Fukushima Prefecture, Japan. , the town had an estimated population of 15,159 in 5487 households, and a population densit ...

– tall gravity dam, 57 MW

References

Rivers of Gunma Prefecture Rivers of Fukushima Prefecture Rivers of Niigata Prefecture Rivers of Japan {{Japan-river-stub