Mud Lake
Dane County, Wisconsin185 acresView mapDirections
No nutrient or algae sampling on record from Wisconsin DNR for this lake.
- Impaired · PFAS
Mud Lake in Dane County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Surface area: 185 acres.
Mud Lake is a 185-acre lake in Dane County, Wisconsin.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Mud Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pFAS. Check local advisories before you swim.
Whether Mud Lake is safe to swim in today is a call for the Wisconsin Department of Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Mud Lake
These are the measurements Wisconsin DNR publishes for Mud 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 Mud Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
185 acres
Shoreline
2.5 mi
No bathymetric survey has been published for Mud Lake, so its depth is not documented here.
Stays via Stay22
Stays near Mud Lake
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Fishing Mud Lake
EPA Impairment Status
Mud 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.
Source: EPA ATTAINS assessment unit WI10006241 · Official waterbody report
Nearby Lakes in Dane County
Frequently asked questions about Mud Lake
Where is Mud Lake?
- Mud Lake is a lake in Dane County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Mud Lake?
- Mud Lake in Dane County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Surface area: 185 acres.
Is Mud Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Mud Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pFAS. Check local advisories before you swim.
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Where this data comes from
Measurements for Mud 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