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Although the river exceeding 100 is flowing into Lake Biwa, the Seta river is a river which even free [ that is left from Lake Biwa ] does not spread. It flows into Osaka Bay, changing Uji-gawa and Yodogawa, and a name after that. For this reason, it was frequently afflicted by the damage of the flood from ancient times at this valley. The old Seta river Nango washing floodgate and the Seta river washing floodgate also have a role which adjusts the amount of water left from Lake Biwa by the one. Moreover, Amagase Dam which is downstream for a while also has a role which adjusts the amount of water which flows in into a capital city. |