Three Johns Lake
Forest County, Wisconsin48 acresView mapDirections
No nutrient or algae sampling on record from Wisconsin DNR for this lake.
- 42 ft max depth
Three Johns Lake in Forest County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 42 ft. Surface area: 48 acres.
Three Johns Lake is a 48-acre lake in Forest County, Wisconsin with a maximum depth of 42 feet (14-foot average).
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water. Methodology: how these readings are compared.
What Three Johns Lake is good for
From access and monitoring records, not editorial picks.
- Deep water42 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Three Johns 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 Three Johns Lake
These are the measurements Wisconsin DNR publishes for Three Johns 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 Three Johns Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
42 ft
Average depth
14 ft
Surface area
48 acres
Shoreline
1.7 mi
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Stays near Three Johns Lake
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Fishing Three Johns Lake
Nearby Lakes in Forest County
Frequently asked questions about Three Johns Lake
Where is Three Johns Lake?
- Three Johns Lake is a lake in Forest County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Three Johns Lake?
- Three Johns Lake in Forest County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 42 ft. Surface area: 48 acres.
Is Three Johns Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Three Johns Lake?
- Three Johns Lake has a maximum depth of 42 feet and an average depth of 14 feet. The lake covers 48 acres.
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Where this data comes from
Measurements for Three Johns Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.