Middle Slough
Calhoun County, Illinois124 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
Middle Slough in Calhoun County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Surface area: 124 acres.
Middle Slough is a 124-acre lake in Calhoun County, Illinois.
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. Check local advisories before you swim.
Whether Middle Slough 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 Middle Slough
These are the measurements Illinois EPA publishes for Middle Slough, 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 Middle Slough
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
124 acres
Shoreline
8.1 mi
No bathymetric survey has been published for Middle Slough, so its depth is not documented here.
Stays via Stay22
Stays near Middle Slough
Compare lakeside cabins, hotels, and vacation rentals near Middle Slough in Calhoun 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.
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Frequently asked questions about Middle Slough
Where is Middle Slough?
- Middle Slough is a lake in Calhoun County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Middle Slough?
- Middle Slough in Calhoun County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Surface area: 124 acres.
Is Middle Slough safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Middle Slough come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.