What is the cleanest lake in St. Clair County, Alabama?

Nees Lake in St. Clair County is the highest-rated lake in St. Clair County, Alabama with an EPA water quality grade of D and 2.7 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 St. Clair County, Alabama

Nees Lake in St. Clair County leads the rankings with a water quality grade of D and 2.7 ft of clarity. Below are the top 9 cleanest monitored lakes in St. Clair County, Alabama, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Nees Lake	St. Clair	D	2.7 ft	35.5 µg/L	25.4 µg/L
2	Lake Joyce	St. Clair	NR	-	-	-
3	Lake Sumatanga	St. Clair	NR	-	-	-
4	Pinedale Lake	St. Clair	NR	-	-	-
5	Chandler Mountain Lake	St. Clair	NR	-	-	-
6	Etowah Conservation Lake	St. Clair	NR	-	-	-
7	Trucks Lake	St. Clair	NR	-	-	-
8	L and M Lake	St. Clair	NR	-	-	-
9	Springville Sportsmen Lake	St. Clair	NR	-	-	-

Ranked List

More Answers for St. Clair County, Alabama