What is the cleanest lake in Sequatchie County, Tennessee?

S K Johnson Lake in Sequatchie County is the highest-rated lake in Sequatchie 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 Sequatchie County, Tennessee

S K Johnson Lake in Sequatchie County leads the rankings with a water quality grade of NR. Below are the top 2 cleanest monitored lakes in Sequatchie County, Tennessee, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	S K Johnson Lake	Sequatchie	NR	-	-	-
2	Deerhead Lake	Sequatchie	NR	-	-	-

Ranked List

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