What is the cleanest lake in Sauk County, Wisconsin?

Dutch Hollow Lake in Sauk County has the cleanest nutrient and algae readings in Sauk County, Wisconsin, with 15 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 Sauk County, Wisconsin

Dutch Hollow Lake in Sauk County leads the rankings on measured clarity and nutrients and 15 ft of clarity. Below are the top 10 cleanest monitored lakes in Sauk County, Wisconsin, ranked on EPA nutrient and algae measurements.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Dutch Hollow Lake	Sauk	15 ft	13.1 µg/L	-
2	Bakkens Pond	Sauk	2.5 ft	23.3 µg/L	-
3	Long Lake	Sauk	4.1 ft	27.9 µg/L	-
4	White Mound Lake	Sauk	5.5 ft	30.1 µg/L	-
5	Lake Redstone	Sauk	2 ft	89 µg/L	-
6	Mirror Lake	Sauk	4.6 ft	65.4 µg/L	-
7	Seeley Lake	Sauk	-	-	-
8	Lake Redstone	Sauk	-	-	-
9	Lake Blass	Sauk	-	-	-
10	Mirror Lake	Sauk	-	-	-

Ranked List

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