Zumbro Lake
Olmsted County, Minnesota700 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Mercury
- 40 ft max depth
Zumbro Lake in Olmsted County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 40 ft. Surface area: 700 acres.
Zumbro Lake is a 700-acre lake in Olmsted 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 Zumbro Lake is good for
From access and monitoring records, not editorial picks.
- Deep water40 ft surveyed max depth
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Zumbro Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Zumbro 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 Zumbro Lake
These are the measurements Minnesota PCA publishes for Zumbro 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 Zumbro Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
40 ft
Surface area
700 acres
Shoreline
18.6 mi
The depth above comes from a bathymetric survey of this lake, not from a regional estimate.
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Fishing Zumbro Lake
EPA Impairment Status
Zumbro 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, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN55-0004-00 · Official waterbody report
Nearby Lakes in Olmsted County
Frequently asked questions about Zumbro Lake
Where is Zumbro Lake?
- Zumbro Lake is a lake in Olmsted County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Zumbro Lake?
- Zumbro Lake in Olmsted County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 40 ft. Surface area: 700 acres.
Is Zumbro Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Zumbro Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Zumbro Lake?
- Zumbro Lake has a maximum depth of 40 feet. The lake covers 700 acres.
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Where this data comes from
Measurements for Zumbro 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