What is the cleanest lake in Obion County, Tennessee?

Carey Basin in Obion County is the highest-rated lake in Obion 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 Obion County, Tennessee

Carey Basin in Obion County leads the rankings with a water quality grade of NR. Below are the top 6 cleanest monitored lakes in Obion County, Tennessee, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Carey Basin	Obion	NR	-	-	-
2	Rat Pocket	Obion	NR	-	-	-
3	Mud Basin	Obion	NR	-	-	-
4	Reelfoot Indian Creek Number Ten Lake	Obion	NR	-	-	-
5	Reelfoot Indian Creek Watershed Number Seven Reservoir	Obion	NR	-	-	-
6	Houser Creek Dam	Obion	NR	-	-	-

Ranked List

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