Stuart Lake
St. Louis County, Minnesota771 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Mercury
- 40 ft max depth
Stuart Lake in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 40 ft. Surface area: 771 acres.
Stuart Lake is a 771-acre lake in St. Louis County, Minnesota with a maximum depth of 40 feet.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder. Methodology: how these readings are compared.
What Stuart Lake is good for
From access and monitoring records, not editorial picks.
- Deep water40 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Stuart Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Whether Stuart 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 Stuart Lake
These are the measurements Minnesota PCA publishes for Stuart 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 Stuart Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
40 ft
Surface area
771 acres
Shoreline
8.8 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Fishing Stuart Lake
EPA Impairment Status
Stuart Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Fish consumption.
Source: EPA ATTAINS assessment unit MN69-0205-00 · Official waterbody report
Nearby Lakes in St. Louis County
Frequently asked questions about Stuart Lake
Where is Stuart Lake?
- Stuart Lake is a lake in St. Louis County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Stuart Lake?
- Stuart Lake in St. Louis County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 40 ft. Surface area: 771 acres.
Is Stuart Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Stuart Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is Stuart Lake?
- Stuart Lake has a maximum depth of 40 feet. The lake covers 771 acres.
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Where this data comes from
Measurements for Stuart Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Lake details from Minnesota DNR LakeFinder