Duck Lake
Lake County, Illinois113 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
- Impaired · Nutrients (phosphorus, nitrogen)
- 9 ft max depth
Duck Lake in Lake County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 9 ft. Surface area: 113 acres.
Duck Lake is a 113-acre lake in Lake County, Illinois with a maximum depth of 9 feet (5-foot average).
Source: EPA Water Quality Portal sampling records, Illinois EPA. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Duck Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), turbidity. Check local advisories before you swim.
Whether Duck 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 Duck Lake
These are the measurements Illinois EPA publishes for Duck 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 Duck Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
9 ft
Average depth
4.5 ft
Surface area
113 acres
Shoreline
7.5 mi
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Stays near Duck Lake
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Fishing Duck Lake
EPA Impairment Status
Duck 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: Other.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit IL_RTZG · Official waterbody report
Nearby Lakes in Lake County
Frequently asked questions about Duck Lake
Where is Duck Lake?
- Duck Lake is a lake in Lake County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Duck Lake?
- Duck Lake in Lake County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 9 ft. Surface area: 113 acres.
Is Duck Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Duck Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen), turbidity. Check local advisories before you swim.
How deep is Duck Lake?
- Duck Lake has a maximum depth of 9 feet and an average depth of 4.5 feet. The lake covers 113 acres.
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Where this data comes from
Measurements for Duck 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