Question 1

Cleanest Lakes in Forest County, Wisconsin?

Accepted Answer

Silver Lake in Forest County leads the rankings with a water quality grade of A and 42.7 ft of clarity. Below are the top 20 cleanest monitored lakes in Forest County, Wisconsin, ranked by EPA water quality score.

Question 2

What is the cleanest lake in Forest County, Wisconsin?

Accepted Answer

Silver Lake in Forest County is the highest-rated lake in Forest County, Wisconsin with an EPA water quality grade of A and 42.7 feet of water clarity.

Question 3

How are these rankings calculated?

Accepted Answer

Lakes are graded A through F using the Metropolitan Council methodology, which combines Secchi depth (water clarity), total phosphorus, and chlorophyll-a (algae) into a single score. Source data comes from the EPA Water Quality Portal.

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Silver Lake	Forest	A	42.7 ft	11.5 µg/L	-
2	Little Sand Lake	Forest	A	26.2 ft	15.9 µg/L	-
3	Lake Lucerne	Forest	A	61.5 ft	9.3 µg/L	-
4	Van Zile Lake	Forest	A	17.2 ft	19.7 µg/L	-
5	Franklin Lake	Forest	A	52.5 ft	10.8 µg/L	-
6	Butternut Lake	Forest	A	59.1 ft	11.8 µg/L	-
7	Lake Metonga	Forest	A	72.2 ft	14 µg/L	-
8	Roberts Lake	Forest	A	38.6 ft	10.8 µg/L	-
9	Trump Lake	Forest	A	39.4 ft	10.6 µg/L	-
10	Luna Lake	Forest	A	18.7 ft	5 µg/L	-
11	St. Johns Lake	Forest	A	33.5 ft	14.8 µg/L	-
12	Mole Lake	Forest	A	27.9 ft	15.3 µg/L	-
13	Arbutus Lake	Forest	A	49.2 ft	10.7 µg/L	-
14	Bear Lake	Forest	A	14.8 ft	18.9 µg/L	-
15	Pine Lake	Forest	A	16.4 ft	28.2 µg/L	-
16	Pickerel Lake	Forest	A	32.8 ft	20.4 µg/L	-
17	Crane Lake	Forest	A	22.1 ft	22 µg/L	-
18	Windfall Lake	Forest	A	32.8 ft	21.2 µg/L	-
19	Bishop Lake	Forest	A	23 ft	25 µg/L	-
20	Kaine Lake	Forest	B	10.7 ft	22.8 µg/L	-

Cleanest Lakes in Forest County, Wisconsin

Ranked List

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