Twelve Lake
Morrison County, Minnesota117 acresView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 10 ft max depth
Twelve Lake in Morrison County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 9.8 ft. Surface area: 117 acres.
Twelve Lake is a 117-acre lake in Morrison 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. Twelve Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Twelve 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 Twelve Lake
These are the measurements Minnesota PCA publishes for Twelve 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 Twelve Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
9.8 ft
Surface area
117 acres
Shoreline
3.6 mi
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Fishing Twelve Lake
EPA Impairment Status
Twelve 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: Recreation.
Source: EPA ATTAINS assessment unit MN49-0006-00 · Official waterbody report
Nearby Lakes in Morrison County
Frequently asked questions about Twelve Lake
Where is Twelve Lake?
- Twelve Lake is a lake in Morrison County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Twelve Lake?
- Twelve Lake in Morrison County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported. Maximum depth: 9.8 ft. Surface area: 117 acres.
Is Twelve Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Twelve Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Twelve Lake?
- Twelve Lake has a maximum depth of 9.8 feet. The lake covers 117 acres.
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Where this data comes from
Measurements for Twelve 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