Lake Pepin
Le Sueur County, Minnesota392 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 13 ft max depth
Lake Pepin in Le Sueur County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 13.1 ft. Surface area: 392 acres.
Lake Pepin is a 392-acre lake in Le Sueur County, Minnesota with a maximum depth of 13 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 Pepin is listed impaired under Clean Water Act §303(d) (IR 4A) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Lake Pepin 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 Pepin
These are the measurements Minnesota PCA publishes for Lake Pepin, 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.
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
13.1 ft
Surface area
392 acres
Shoreline
4.5 mi
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Fishing Lake Pepin
EPA Impairment Status
Lake Pepin 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 MN40-0028-00 · Official waterbody report
Nearby Lakes in Le Sueur County
Frequently asked questions about Lake Pepin
Where is Lake Pepin?
- Lake Pepin is a lake in Le Sueur 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 Pepin?
- Lake Pepin in Le Sueur County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 13.1 ft. Surface area: 392 acres.
Is Lake Pepin safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Pepin 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 Pepin?
- Lake Pepin has a maximum depth of 13.1 feet. The lake covers 392 acres.
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Where this data comes from
Measurements for Lake Pepin 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