Kochi, Japan
County page for 3 named lakes in Japan. Official surface phosphorus, chlorophyll-a, and Secchi — not a swim-safety class and not a LakeQuality letter.
Lake map
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Named lakes
| Lake | Place | Total phosphorus | Chlorophyll-a | Secchi | Year |
|---|---|---|---|---|---|
| 大橋ダム貯水池 | Kochi | 4.0 µg/L | — | — | 2024 |
| 早明浦ダム貯水池 | Kochi | 5.0 µg/L | — | 6.5 m | 2025 |
| 長沢ダム貯水池 | Kochi | 5.0 µg/L | — | — | 2024 |
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