Reading: Suiriken
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Water rights are the rights to use water from rivers and other sources. With regard to dams, they are divided into agricultural water, water for water supply, industrial water, etc.
Water rights are broadly classified into two types: conventional water rights and permitted water rights. The former do not require notification if the water was taken before the River Law was enacted (before 1896) and is socially recognized, while the latter require permission from the river administrator (national or local government) based on the River Law. Most of the water rights related to dams are permitted water rights, which are usually renewed after 10 years.
The Miyanaka Dam on the Shinano River (JR East Shinano River Power Station) is a rare dam that has had its water rights revoked for illegally taking water.
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