River Swale
Mason County, Illinois193 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
River Swale in Mason County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Surface area: 193 acres.
River Swale is a 193-acre lake in Mason 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 River Swale 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 River Swale
These are the measurements Illinois EPA publishes for River Swale, 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 River Swale
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
193 acres
Shoreline
9.3 mi
No bathymetric survey has been published for River Swale, so its depth is not documented here.
Stays via Stay22
Stays near River Swale
Compare lakeside cabins, hotels, and vacation rentals near River Swale in Mason 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 River Swale
Where is River Swale?
- River Swale is a lake in Mason County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of River Swale?
- River Swale in Mason County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Surface area: 193 acres.
Is River Swale 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 River Swale come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.