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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): 3.2 ft. Phosphorus: 92.8 µg/L. Trophic State Index: 65.

Cleanliness Snapshot

MetricLittle Green LakeWisconsin avg
Overall GradeDB
Water Clarity (Secchi)3.2 ft
Phosphorus92.8 µg/L<30 = clean
Trophic State Index65<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 #5 of 7 lakes in Green Lake County by water quality score. Multi-year monitoring data shows water quality is improving based on 5 years of records.