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

Edmonson County Lake Quality

Kentucky, 1 lake, average grade B (Good)

Edmonson County has 1 monitored lake — 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. Every one of those lake carries an A–F grade, so the county-level summary covers the full set rather than a monitored subset. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.

The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Nolin Lake (B); the most-stressed is Nolin Lake (B).

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All Lakes in Edmonson County

1 lake1 graded lake

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
1BNolin LakeEdmonsonB5.5 ft19 µg/L11.1 µg/LNo recent samples✓ Public

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See how Edmonson County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: EPA National Aquatic Resource Surveys, 2026.