What is the cleanest lake in Georgia?

High Falls Lake in Monroe County is the highest-rated lake in Georgia with an EPA water quality grade of D and 3.3 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.

Lakes With Algae Problems in Georgia

1 lakes in Georgia report elevated algae levels (chlorophyll-a above 20 µg/L). These lakes are most likely to develop blue-green algae blooms during warm, calm summer weather. Avoid swimming during visible blooms and rinse pets after contact.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	High Falls Lake	Monroe	D	3.3 ft	40 µg/L	23 µg/L

Ranked List

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