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,
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 Miyagi ...
s.
Dams
Starting from the furthest upstream, the river is dammed by:
*
Okutadami Dam – 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 f ...
, 182 MW
*
Tagokura Dam – tall gravity dam, 380 MW
*
Tadami Dam – 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 an ...
, 65 MW
*
Taki Dam – tall gravity dam, 92 MW
*
Honna Dam – tall gravity dam, 78 MW
*
Uwada Dam – tall gravity dam, 63.9 MW
*
Miyashita Dam – tall gravity dam, 94 MW
*
Yanaizu Dam – tall gravity dam, 75 MW
*
Katakado Dam – tall gravity dam, 57 MW
References
Rivers of Gunma Prefecture
Rivers of Fukushima Prefecture
Rivers of Niigata Prefecture
Rivers of Japan
{{Japan-river-stub