What is the cleanest lake in Madison County, New York?

Poolville Pond in Madison County is the highest-rated lake in Madison County, New York 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 Madison County, New York

Poolville Pond in Madison County leads the rankings with a water quality grade of NR. Below are the top 6 cleanest monitored lakes in Madison County, New York, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Poolville Pond	Madison	NR	-	-	-
2	Madison Lake	Madison	NR	-	-	-
3	Leland Pond	Madison	NR	-	-	-
4	Woodman Pond	Madison	NR	-	-	-
5	Lebanon Reservoir	Madison	NR	-	-	-
6	Torpy Pond	Madison	NR	-	-	-

Ranked List

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