Lake Jacksonville
Morgan County, Illinois462 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
- Impaired · Mercury
- 36 ft max depth
Lake Jacksonville in Morgan County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 36 ft. Surface area: 462 acres.
Lake Jacksonville is a 462-acre lake in Morgan County, Illinois with a maximum depth of 36 feet (13-foot average).
Source: EPA Water Quality Portal sampling records, Illinois EPA. Methodology: how these readings are compared.
What Lake Jacksonville is good for
From access and monitoring records, not editorial picks.
- Deep water36 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Lake Jacksonville is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen), turbidity. Check local advisories before you swim.
Whether Lake Jacksonville 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 Lake Jacksonville
These are the measurements Illinois EPA publishes for Lake Jacksonville, 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 Lake Jacksonville
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
36 ft
Average depth
12.8 ft
Surface area
462 acres
Shoreline
19.5 mi
Stays via Stay22
Stays near Lake Jacksonville
Compare lakeside cabins, hotels, and vacation rentals near Lake Jacksonville in Morgan County, Illinois — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lake Jacksonville
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Fishing Lake Jacksonville
EPA Impairment Status
Lake Jacksonville 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_RDI · Official waterbody report
Nearby Lakes in Morgan County
Frequently asked questions about Lake Jacksonville
Where is Lake Jacksonville?
- Lake Jacksonville is a lake in Morgan County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Lake Jacksonville?
- Lake Jacksonville in Morgan County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 36 ft. Surface area: 462 acres.
Is Lake Jacksonville safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Jacksonville is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen), turbidity. Check local advisories before you swim.
How deep is Lake Jacksonville?
- Lake Jacksonville has a maximum depth of 36 feet and an average depth of 12.8 feet. The lake covers 462 acres.
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Where this data comes from
Measurements for Lake Jacksonville 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