What is the cleanest lake in Hall County, Georgia?

Lake Lanier Upstream From Flowery Branch Confluence in Hall County is the highest-rated lake in Hall County, Georgia with an EPA water quality grade of C and 13 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 Hall County, Georgia

Lake Lanier Upstream From Flowery Branch Confluence in Hall County leads the rankings with a water quality grade of C and 13 ft of clarity. Below are the top 2 cleanest monitored lakes in Hall County, Georgia, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Lake Lanier Upstream From Flowery Branch Confluence	Hall	C	13 ft	20 µg/L	6.2 µg/L
2	Looper Lake	Hall	NR	-	-	-

Ranked List

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