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LakeGrade
F

Mcmahon Lake

Scott County, MinnesotaLimited Data

Water Quality Grade: FVery Poor

Very murky — less than 3.0 feet of visibility.

MetricValueGrade
Water Clarity (Secchi Depth)0.91 mF
PhosphorusNo data
Chlorophyll-a (Algae)No data

County Ranking

Ranked #16 of 17 lakes in Scott County

Data Sources

Data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2024-09-26

Monitoring stations: 1