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LakeQuality

How Clean Is Big Carnelian Lake?

Big Carnelian Lake is among the cleanest lakes in Minnesota. It received a water quality grade of A (Excellent) based on EPA monitoring data. Water clarity (Secchi depth): 46.8 ft. Trophic State Index: 22.

Cleanliness Snapshot

MetricBig Carnelian LakeMinnesota avg
Overall GradeAC
Water Clarity (Secchi)46.8 ft
Trophic State Index22<50 = clean

How does Big Carnelian Lake compare?

Big Carnelian Lake's grade of A matches or beats the Minnesota state average of C. It ranks #3 of 31 lakes in Washington County by water quality score. Multi-year monitoring data shows water quality is stable based on 5 years of records.