Patterson Bay
Mason County, Illinois51 acresView mapDirections
No nutrient or algae sampling on record from Illinois EPA for this lake.
Patterson Bay in Mason County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Surface area: 51 acres.
Patterson Bay is a 51-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 Patterson Bay 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 Patterson Bay
These are the measurements Illinois EPA publishes for Patterson Bay, 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 Patterson Bay
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
51 acres
Shoreline
1.7 mi
No bathymetric survey has been published for Patterson Bay, so its depth is not documented here.
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Stays near Patterson Bay
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Frequently asked questions about Patterson Bay
Where is Patterson Bay?
- Patterson Bay 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 Patterson Bay?
- Patterson Bay in Mason County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Surface area: 51 acres.
Is Patterson Bay 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 Patterson Bay come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.