Tower Lake
Madison County, Illinois71 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
- Impaired · Algal growth
- 30 ft max depth
Tower Lake in Madison County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 30 ft. Surface area: 71 acres.
Tower Lake is a 71-acre lake in Madison County, Illinois with a maximum depth of 30 feet (17-foot average).
Source: EPA Water Quality Portal sampling records, Illinois EPA. Methodology: how these readings are compared.
What Tower Lake is good for
From access and monitoring records, not editorial picks.
- Deep water30 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Tower Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Tower Lake is safe to swim in today is a call for the Illinois Environmental Protection Agency and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Tower Lake
These are the measurements Illinois EPA publishes for Tower 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 Tower Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
30 ft
Average depth
17 ft
Surface area
71 acres
Shoreline
3.8 mi
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Stays near Tower Lake
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EPA Impairment Status
Tower Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
Designated uses not supporting: Other.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit IL_RJO · Official waterbody report
Nearby Lakes in Madison County
Frequently asked questions about Tower Lake
Where is Tower Lake?
- Tower Lake is a lake in Madison County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Tower Lake?
- Tower Lake in Madison County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 30 ft. Surface area: 71 acres.
Is Tower Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Tower Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for algal growth, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Tower Lake?
- Tower Lake has a maximum depth of 30 feet and an average depth of 17 feet. The lake covers 71 acres.
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Where this data comes from
Measurements for Tower 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