Lake Oliver
Swift County, Minnesota324 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Impaired biota (cause unknown)
- 18 ft max depth
Lake Oliver in Swift County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 18 ft. Surface area: 324 acres.
Lake Oliver is a 324-acre lake in Swift County, Minnesota with a maximum depth of 18 feet.
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. Lake Oliver is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury. Check local advisories before you swim.
Whether Lake Oliver 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 Oliver
These are the measurements Minnesota PCA publishes for Lake Oliver, 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 Oliver
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
18 ft
Surface area
324 acres
Shoreline
4.3 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Fishing Lake Oliver
EPA Impairment Status
Lake Oliver 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: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN76-0146-01 · Official waterbody report
Nearby Lakes in Swift County
Frequently asked questions about Lake Oliver
Where is Lake Oliver?
- Lake Oliver is a lake in Swift 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 Oliver?
- Lake Oliver in Swift County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 18 ft. Surface area: 324 acres.
Is Lake Oliver safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Oliver is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury. Check local advisories before you swim.
How deep is Lake Oliver?
- Lake Oliver has a maximum depth of 18 feet. The lake covers 324 acres.
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Where this data comes from
Measurements for Lake Oliver 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