Newton Lake
Jasper County, Illinois1,746 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
- Impaired · Mercury
- 40 ft max depth
Newton Lake in Jasper County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 40 ft. Surface area: 1746 acres.
Newton Lake is a 1,746-acre lake in Jasper County, Illinois with a maximum depth of 40 feet (16-foot average).
Source: EPA Water Quality Portal sampling records, Illinois EPA. Methodology: how these readings are compared.
What Newton Lake is good for
From access and monitoring records, not editorial picks.
- Deep water40 ft surveyed max depth
- Big water1,746 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Newton Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Newton 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 Newton Lake
These are the measurements Illinois EPA publishes for Newton 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 Newton Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
40 ft
Average depth
16 ft
Surface area
1,746 acres
Shoreline
61.4 mi
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Fishing Newton Lake
EPA Impairment Status
Newton 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.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit IL_RCR · Official waterbody report
Nearby Lakes in Jasper County
Frequently asked questions about Newton Lake
Where is Newton Lake?
- Newton Lake is a lake in Jasper County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Newton Lake?
- Newton Lake in Jasper County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Maximum depth: 40 ft. Surface area: 1746 acres.
Is Newton Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Newton 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 Newton Lake?
- Newton Lake has a maximum depth of 40 feet and an average depth of 16 feet. The lake covers 1746 acres.
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Where this data comes from
Measurements for Newton 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