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

Southern Section Lake in Washington County is the highest-rated lake in Washington County, New York with an EPA water quality grade of D and 2 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 Washington County, New York

Southern Section Lake in Washington County leads the rankings with a water quality grade of D and 2 ft of clarity. Below are the top 20 cleanest monitored lakes in Washington County, New York, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Southern Section Lake	Washington	D	2 ft	52.7 µg/L	13.5 µg/L
2	Mud Pond	Washington	NR	-	-	-
3	Browns Pond	Washington	NR	-	-	-
4	Fishbrook Pond	Washington	NR	-	-	-
5	Pine Lake	Washington	NR	-	-	-
6	Thurber Pond	Washington	NR	-	-	-
7	Crossett Pond	Washington	NR	-	-	-
8	Lakes Pond	Washington	NR	-	-	-
9	Lake Nebo	Washington	NR	-	-	-
10	Sly Pond	Washington	NR	-	-	-
11	Copeland Pond	Washington	NR	-	-	-
12	Dolph Pond	Washington	NR	-	-	-
13	Martins Pond	Washington	NR	-	-	-
14	Smith Pond	Washington	NR	-	-	-
15	Barkley Pond	Washington	NR	-	-	-
16	Summit Lake	Washington	NR	-	-	-
17	McDougall Lake	Washington	NR	-	-	-
18	Scott Lake	Washington	NR	-	-	-
19	Lake Lauderdale	Washington	NR	-	-	-
20	Hedges Lake	Washington	NR	-	-	-

Ranked List

More Answers for Washington County, New York