What is the cleanest lake in McNairy County, Tennessee?

Big Hill Pond Lake in McNairy County is the highest-rated lake in McNairy County, Tennessee with an EPA water quality grade of NR.

How are these rankings calculated?

Lakes are graded A through F on nutrients and algae — total phosphorus, nitrogen, chlorophyll-a, and turbidity — against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown; it is not the letter. Lakes without enough recent samples are UNRATED, not given an F. Source data comes from the EPA Water Quality Portal.

Cleanest Lakes in McNairy County, Tennessee

Big Hill Pond Lake in McNairy County leads the rankings with a water quality grade of NR. Below are the top 2 cleanest monitored lakes in McNairy County, Tennessee, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Big Hill Pond Lake	McNairy	NR	-	-	-
2	J J Madison Lake	McNairy	NR	-	-	-

Ranked List

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