Dōzan River
The Dōzan River (銅山川, Dōzan-gawa) is the largest branch of the Yoshino River and flows through Ehime and Tokushima prefectures in Japan.[1] Its name was derived from the Besshi copper mine that is now closed. In Tokushima Prefecture, it is called the Iyo River (伊予川 Iyo-gawa).[2]
| Dōzan River 銅山川 | |
|---|---|
 | |
| Location | |
| Country | Japan |
| Physical characteristics | |
| Source | |
| • location | Mount Kanmuri |
| • elevation | 1,732 m (5,682 ft) |
| Mouth | |
• location | Yoshino River |
| Length | 55 km (34 mi) |
| Basin size | 280 km2 (110 sq mi) |
| Discharge | |
| • average | 500 m3/s (18,000 cu ft/s) |
Geography
The rivers originates Mount Kanmuri on the borders of Ehime and Kōchi prefectures. It then flows through Shikokuchūō in Ehime Prefecture and Miyoshi in Tokushima Prefecture, before joining with the Yoshino River.
History
In 1900, poisons from the various minerals excavated at the nearby copper mine seeped into the river, poisoning the local populations downstream.
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References
- http://www.skr.mlit.go.jp/tokushima/yoshinoriver/doc/090827final/plan_yoshinoriver.pdf (Japanese)
- "四国中央市の文化財 「金砂湖及び富郷渓谷」 (Japanese)". Archived from the original on 2012-06-30. Retrieved 2012-01-15.
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