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LakeQuality

Lake map

Map shows 3 lakes with coordinates

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Named lakes

LakePlaceTotal phosphorusChlorophyll-aSecchiYear
下久保ダム貯水池Saitama14 µg/L—3.0 m2025
二瀬ダム貯水池Saitama11 µg/L—0.8 m2025
荒川貯水池Saitama47 µg/L—0.6 m2025

Frequently asked questions

How many named lakes are in Saitama?
3 named lakes in Saitama, Japan, have official phosphorus and Secchi, 2025. Values are the authority's measurements, shown as reported.
Where do the Saitama readings come from?
Saitama 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.