Maria Lake
Clay County, Minnesota107 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 10 ft max depth
Maria Lake in Clay County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 9.8 ft. Surface area: 107 acres.
Maria Lake is a 107-acre lake in Clay County, Minnesota with a maximum depth of 10 feet.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder. Methodology: how these readings are compared.
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Maria Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Maria 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 Maria Lake
These are the measurements Minnesota PCA publishes for Maria 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 Maria Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
9.8 ft
Surface area
107 acres
Shoreline
2.1 mi
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Fishing Maria Lake
EPA Impairment Status
Maria Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN14-0099-00 · Official waterbody report
Nearby Lakes in Clay County
Frequently asked questions about Maria Lake
Where is Maria Lake?
- Maria Lake is a lake in Clay County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Maria Lake?
- Maria Lake in Clay County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 9.8 ft. Surface area: 107 acres.
Is Maria Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Maria Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Maria Lake?
- Maria Lake has a maximum depth of 9.8 feet. The lake covers 107 acres.
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Where this data comes from
Measurements for Maria 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