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LakeQuality

How Clean Is Little Green Lake?

Little Green Lake has poor water quality, with elevated phosphorus and algae. It received a water quality grade of D (Poor) based on EPA monitoring data. Water clarity (Secchi depth): 8.9 ft. Phosphorus: 91.7 µg/L. Trophic State Index: 57.

Cleanliness Snapshot

MetricLittle Green LakeWisconsin avg
Overall GradeDB
Water Clarity (Secchi)8.9 ft
Phosphorus91.7 µg/L<30 = clean
Trophic State Index57<50 = clean

How does Little Green Lake compare?

Little Green Lake's grade of D falls below the Wisconsin state average of B. It ranks #10 of 13 lakes in Green Lake County by water quality score. Multi-year monitoring data shows water quality is stable based on 5 years of records.