Thorn Lake
Douglas County, Wisconsin34 acresView mapDirections
No nutrient or algae sampling on record from Wisconsin DNR for this lake.
- 6 ft max depth
Thorn Lake in Douglas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 6 ft. Surface area: 34 acres.
Thorn Lake is a 34-acre lake in Douglas County, Wisconsin with a maximum depth of 6 feet (4-foot average).
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. Check local advisories before you swim.
Whether Thorn 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 Thorn Lake
These are the measurements Wisconsin DNR publishes for Thorn 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 Thorn Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
6 ft
Average depth
4 ft
Surface area
34 acres
Shoreline
1.1 mi
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Fishing Thorn Lake
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Frequently asked questions about Thorn Lake
Where is Thorn Lake?
- Thorn Lake is a lake in Douglas County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Thorn Lake?
- Thorn Lake in Douglas County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 6 ft. Surface area: 34 acres.
Is Thorn Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Thorn Lake?
- Thorn Lake has a maximum depth of 6 feet and an average depth of 4 feet. The lake covers 34 acres.
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Where this data comes from
Measurements for Thorn Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.