Dongola Lake
Union County, Illinois64 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
- Impaired · Mercury
- 22 ft max depth
Dongola Lake in Union County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 22 ft. Surface area: 64 acres.
Dongola Lake is a 64-acre lake in Union County, Illinois with a maximum depth of 22 feet (8-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. Dongola Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Dongola 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 Dongola Lake
These are the measurements Illinois EPA publishes for Dongola 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 Dongola Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
22 ft
Average depth
8 ft
Surface area
64 acres
Shoreline
2.4 mi
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Stays near Dongola Lake
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Fishing Dongola Lake
EPA Impairment Status
Dongola 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, Other.
Source: EPA ATTAINS assessment unit IL_RIE · Official waterbody report
Nearby Lakes in Union County
Frequently asked questions about Dongola Lake
Where is Dongola Lake?
- Dongola Lake is a lake in Union County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Dongola Lake?
- Dongola Lake in Union County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 22 ft. Surface area: 64 acres.
Is Dongola Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Dongola Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Dongola Lake?
- Dongola Lake has a maximum depth of 22 feet and an average depth of 8 feet. The lake covers 64 acres.
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Where this data comes from
Measurements for Dongola 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