What is the cleanest lake in Limestone County, Alabama?

Tenr Lake in Limestone County is the highest-rated lake in Limestone County, Alabama with an EPA water quality grade of C and 6.5 feet of water clarity.

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 Limestone County, Alabama

Tenr Lake in Limestone County leads the rankings with a water quality grade of C and 6.5 ft of clarity. Below are the top 2 cleanest monitored lakes in Limestone County, Alabama, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Tenr Lake	Limestone	C	6.5 ft	29 µg/L	6.1 µg/L
2	Wheeler Reservoir	Limestone	NR	-	-	-

Ranked List

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