Ishikawa, 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 |
|---|---|---|---|---|---|
| 北潟湖 | Ishikawa | 57 µg/L | — | 0.6 m | 2025 |
| 木場潟 | Ishikawa | 70 µg/L | — | 0.5 m | 2025 |
| 河北潟 | Ishikawa | 82 µg/L | — | 0.7 m | 2025 |
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