The Sarugaishi River running through the mid-western part of Iwate Pref. is a river classified as Class A River by Ministry of Land, Infrastructure and Transport. It is part of the Kitakami River System. The total length is 73 kilometers and the watershed is 952 square kilometers. Springing out of Mt. Yakushi (1645 m) on the border of Tono City and Hanamaki City, Iwate Pref. the branch rivers including the Kogarase River, the Hayase River and the Otomo River join the main stream. Along the river are the folk tale town of Tono, which is famous for “The Legends of Tono,” Lake Tase for outdoor activities and the town of Towa in Hanamaki City, which is famous for “Naki-zumo (crying sumo wrestling).” Then the river finally flows into the Kitakami River near Igirisu Kaigan (English Coast) named by Kenji Miyazawa. The Sarugaishi River is well-known as the fishing place for Japanese trout, Yamame, Ugui and Iwana. The watershed area is part of Hayachine Quasi-National Park, where a variety of alpine plants, large and small waterfalls and beautiful gorges can be viewed.
- Iwate Prefecture, Japan
- The Sarugaishi River