What is the cleanest lake in Portage County, Wisconsin?

Lake Emily in Portage County has the cleanest nutrient and algae readings in Portage County, Wisconsin, with 11 feet of measured water clarity.

How are these rankings calculated?

Nutrients and algae, total phosphorus, nitrogen, chlorophyll-a and turbidity, are read against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown separately. Lakes without enough recent samples are listed without a condition class rather than ranked low. Source data comes from the EPA Water Quality Portal.

Cleanest Lakes in Portage County, Wisconsin

Lake Emily in Portage County leads the rankings on measured clarity and nutrients and 11 ft of clarity. Below are the top 21 cleanest monitored lakes in Portage County, Wisconsin, ranked on EPA nutrient and algae measurements.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Lake Emily	Portage	11 ft	16.9 µg/L	-
2	Rinehart Lake	Portage	19 ft	13.8 µg/L	-
3	Sunset Lake	Portage	13.3 ft	13.1 µg/L	-
4	Tree Lake	Portage	7.4 ft	20.1 µg/L	-
5	Glisezinski Lake	Portage	9 ft	16.4 µg/L	-
6	Collins Lake	Portage	6.5 ft	20.6 µg/L	-
7	Lake Helen	Portage	8 ft	19.2 µg/L	-
8	Onland Lake	Portage	10.5 ft	12.8 µg/L	-
9	Springville Pond	Portage	9 ft	18.8 µg/L	-
10	Mcdill Pond	Portage	5 ft	34.1 µg/L	-
11	Spring Lake	Portage	8.8 ft	29.9 µg/L	-
12	Bass Lake	Portage	-	-	-
13	Washburn Lake	Portage	-	-	-
14	Lions Lake	Portage	-	-	-
15	Bentley Pond	Portage	-	-	-
16	VanOrder Pond	Portage	-	-	-
17	Bakers Lake	Portage	-	-	-
18	Hintz Lake	Portage	-	-	-
19	Reton Lake	Portage	-	-	-
20	Wisconsin River Flowage	Portage	-	-	-
21	Little Eau Pleine Flowage	Portage	-	-	-

Ranked List

More Answers for Portage County, Wisconsin