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LakeQuality

Lake map

Map shows 3 lakes with coordinates

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Named lakes

LakePlaceTotal phosphorusChlorophyll-aSecchiYear
境川ダム貯水池Gifu3.0 µg/L—5.1 m2024
徳山ダム貯水池Gifu4.5 µg/L——2024
横山ダム貯水池Gifu13 µg/L—3.6 m2025

Frequently asked questions

How many named lakes are in Gifu?
3 named lakes in Gifu, Japan, have official phosphorus and Secchi, 2024–2025. Values are the authority's measurements, shown as reported.
Where do the Gifu readings come from?
Gifu pages show official phosphorus, chlorophyll-a, and Secchi from the publishing authority, with the year each was taken.

Official surface phosphorus, chlorophyll-a, and/or Secchi. Not a LakeQuality A–F grade — the authority does not publish a letter on this scale.