Question 1

Cleanest Lakes in Manitowoc County, Wisconsin?

Accepted Answer

Spring Lake in Manitowoc County leads the rankings with a water quality grade of A and 26.2 ft of clarity. Below are the top 17 cleanest monitored lakes in Manitowoc County, Wisconsin, ranked by EPA water quality score.

Question 2

What is the cleanest lake in Manitowoc County, Wisconsin?

Accepted Answer

Spring Lake in Manitowoc County is the highest-rated lake in Manitowoc County, Wisconsin with an EPA water quality grade of A and 26.2 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	Spring Lake	Manitowoc	A	26.2 ft	19.6 µg/L	-
2	Cedar Lake	Manitowoc	A	34.5 ft	17.3 µg/L	-
3	Tuma Lake	Manitowoc	A	32.8 ft	19 µg/L	-
4	Pigeon Lake	Manitowoc	A	29.6 ft	15.4 µg/L	-
5	Mi32 Lake	Manitowoc	A	49.2 ft	-	0.9 µg/L
6	Wilke Lake	Manitowoc	A	23 ft	16.5 µg/L	-
7	English Lake	Manitowoc	A	24.6 ft	26.7 µg/L	-
8	Shoe Lake	Manitowoc	A	23 ft	26.6 µg/L	-
9	Kasbaum Lake	Manitowoc	A	32 ft	22.2 µg/L	-
10	Horseshoe Lake	Manitowoc	B	24.6 ft	36.2 µg/L	-
11	Hartlaub Lake	Manitowoc	B	16.4 ft	35.8 µg/L	-
12	Harpt Lake	Manitowoc	B	12.3 ft	44.2 µg/L	-
13	Gass Lake	Manitowoc	B	19.7 ft	62.9 µg/L	-
14	Carstens Lake	Manitowoc	C	17.2 ft	92.6 µg/L	-
15	Bullhead Lake	Manitowoc	C	13.1 ft	68.4 µg/L	-
16	Weyers Lake	Manitowoc	C	21.3 ft	92.3 µg/L	-
17	Long Lake	Manitowoc	D	5.2 ft	90.4 µg/L	-

Cleanest Lakes in Manitowoc County, Wisconsin

Ranked List

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