Lake Oscar
Otter Tail County, Minnesota153 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 16 ft max depth
Lake Oscar in Otter Tail County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 16 ft. Surface area: 153 acres.
Lake Oscar is a 153-acre lake in Otter Tail County, Minnesota with a maximum depth of 16 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. Lake Oscar is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Lake Oscar 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 Lake Oscar
These are the measurements Minnesota PCA publishes for Lake Oscar, 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 Lake Oscar
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
16 ft
Surface area
153 acres
Shoreline
2 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Fishing Lake Oscar
EPA Impairment Status
Lake Oscar 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 MN56-0982-00 · Official waterbody report
Nearby Lakes in Otter Tail County
Frequently asked questions about Lake Oscar
Where is Lake Oscar?
- Lake Oscar is a lake in Otter Tail County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Lake Oscar?
- Lake Oscar in Otter Tail County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 16 ft. Surface area: 153 acres.
Is Lake Oscar safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Oscar is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Lake Oscar?
- Lake Oscar has a maximum depth of 16 feet. The lake covers 153 acres.
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Where this data comes from
Measurements for Lake Oscar 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