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 and Fukushima Prefectures. Dams Starting from the furthest upstream, the river is dammed by: Okutadami Dam – tall gravity dam, 560 MW Otori Dam – tall arch-gravity dam, 182 MW Tagokura Dam – tall gravity dam, 380 MW Tadami Dam – tall embankment dam, 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