Thorn Reservoir
Butler County, Pennsylvania41 acresView mapDirections
No nutrient or algae sampling on record from PA DEP for this lake.
Thorn Reservoir in Butler County, Pennsylvania has water-quality measurements published by PA DEP, shown here as reported. Surface area: 41 acres.
Thorn Reservoir is a 41-acre lake in Butler County, Pennsylvania.
Source: EPA Water Quality Portal sampling records, PA DEP. 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 Thorn Reservoir is safe to swim in today is a call for the Pennsylvania Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Thorn Reservoir
These are the measurements PA DEP publishes for Thorn Reservoir, 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 Thorn Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
41 acres
Shoreline
2 mi
No bathymetric survey has been published for Thorn Reservoir, so its depth is not documented here.
Stays via Stay22
Stays near Thorn Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Thorn Reservoir in Butler County, Pennsylvania — 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 Thorn Reservoir
Where is Thorn Reservoir?
- Thorn Reservoir is a lake in Butler County, Pennsylvania. Its water-quality measurements are published by PA DEP and shown on this page as reported.
What is the water quality of Thorn Reservoir?
- Thorn Reservoir in Butler County, Pennsylvania has water-quality measurements published by PA DEP, shown here as reported. Surface area: 41 acres.
Is Thorn Reservoir 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 Thorn Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.