Upper Holly Lake
Sawyer County, Wisconsin33 acresView mapDirections
No nutrient or algae sampling on record from Wisconsin DNR for this lake.
- Impaired · Mercury
- 14 ft max depth
Upper Holly Lake in Sawyer County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 14 ft. Surface area: 33 acres.
Upper Holly Lake is a 33-acre lake in Sawyer County, Wisconsin with a maximum depth of 14 feet.
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. Upper Holly Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Whether Upper Holly 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 Upper Holly Lake
These are the measurements Wisconsin DNR publishes for Upper Holly 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 Upper Holly Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
14 ft
Surface area
33 acres
Shoreline
1 mi
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Stays near Upper Holly Lake
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Fishing Upper Holly Lake
EPA Impairment Status
Upper Holly 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 WI10004089 · Official waterbody report
Nearby Lakes in Sawyer County
Frequently asked questions about Upper Holly Lake
Where is Upper Holly Lake?
- Upper Holly Lake is a lake in Sawyer County, Wisconsin. Its water-quality measurements are published by Wisconsin DNR and shown on this page as reported.
What is the water quality of Upper Holly Lake?
- Upper Holly Lake in Sawyer County, Wisconsin has water-quality measurements published by Wisconsin DNR, shown here as reported. Maximum depth: 14 ft. Surface area: 33 acres.
Is Upper Holly Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Upper Holly Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is Upper Holly Lake?
- Upper Holly Lake has a maximum depth of 14 feet. The lake covers 33 acres.
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Where this data comes from
Measurements for Upper Holly 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