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LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Erie County Lake Quality

Pennsylvania, 5 lakes, measured by PA DEP

Erie County has 5 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. 1 of those lake carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. The county's readings sit in the middle of the Pennsylvania range, with one or two lakes pulling the average up or down depending on year.

The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Edinboro Lake.

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All Lakes in Erie County

5 lakes · 1 ranked on readings, 4 without enough sampling1 lake ranked on readings · 4 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
1Edinboro LakeErieNo recent samples27.5 µg/L48 µg/LNo recent samples29.9 ft✓ Public
LeBoeuf LakeErieNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Union City ReservoirErieNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake PleasantErieNo recent samplesNo recent samples5.6 µg/LNo recent samplesNo recent samplesNot recorded
Howard Eaton ReservoirErieNo recent samples16 µg/L4.4 µg/LNo recent samplesNo recent samples✓ Public

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Source: the Pennsylvania Department of Environmental Protection. See data sources.