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river In Kōchi Prefecture

1.Yoshino River
The Yoshino River (吉野川 Yoshino-gawa) is a river on the island of Shikoku, Japan. It is 194 km (121 mi) long and has a watershed of 3,750 km2 (1,450 sq mi). It is the second longest river in Shikoku (slightly shorter than the Shimanto), and is the only river whose watershed spreads over the four prefectures of the island.
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2.Shimanto River
The Shimanto River (四万十川, Shimanto-gawa) is a river in western Kōchi Prefecture, Japan.[1] 196 km in length, it has a watershed of 2,270 km2. Since the river is remote from major cities and does not have any dams, it is sometimes referred to as "the last clear stream of Japan". Fishing and production of nori is a thriving industry along the river.[citation needed] It has been named one of the "Three Free-Flowing Rivers in Japan", along with the Nagara River in Gifu Prefecture and the Kakita River in Shizuoka Prefecture.
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