What is the cleanest lake in Davidson County, North Carolina?

Cobles Reservoir in Davidson County is the highest-rated lake in Davidson County, North Carolina 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 Davidson County, North Carolina

Cobles Reservoir in Davidson County leads the rankings with a water quality grade of NR. Below are the top 3 cleanest monitored lakes in Davidson County, North Carolina, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Cobles Reservoir	Davidson	NR	-	-	-
2	City Lake	Davidson	NR	-	-	-
3	Lake Tom-A-Lex	Davidson	NR	-	-	-

Ranked List

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