Upper Loon Lake
Cass County, Minnesota119 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
Upper Loon Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Surface area: 119 acres.
Upper Loon Lake is a 119-acre lake in Cass County, Minnesota.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Upper Loon Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Upper Loon Lake
These are the measurements Minnesota PCA publishes for Upper Loon Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Upper Loon Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
119 acres
Shoreline
1.9 mi
No bathymetric survey has been published for Upper Loon Lake, so its depth is not documented here.
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Frequently asked questions about Upper Loon Lake
Where is Upper Loon Lake?
- Upper Loon Lake is a lake in Cass County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Upper Loon Lake?
- Upper Loon Lake in Cass County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Surface area: 119 acres.
Is Upper Loon Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Upper Loon Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Lake details from Minnesota DNR LakeFinder