Skip to main content
LakeGrade
A

Lake Superior Ngl20_wi

Douglas County, Wisconsin

Water Quality Grade: AExcellent

Crystal clear — you can see 76.1 feet down. Phosphorus level: 2.3 µg/L.

MetricValueGrade
Water Clarity (Secchi Depth)23.2 mA
Phosphorus2.3 µg/LA
Chlorophyll-a (Algae)No data

County Ranking

Ranked #20 of 70 lakes in Douglas County

Data Sources

Data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2021-08-04

Monitoring stations: 1