What is the cleanest lake in Dewey County, South Dakota?

Livermant Lake in Dewey County has the cleanest nutrient and algae readings in Dewey County, South Dakota.

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 Dewey County, South Dakota

Livermant Lake in Dewey County leads the rankings on measured clarity and nutrients. Below are the top 6 cleanest monitored lakes in Dewey County, South Dakota, ranked on EPA nutrient and algae measurements.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Livermant Lake	Dewey	-	-	-
2	Horseshoe Lake	Dewey	-	-	-
3	Peach Lake	Dewey	-	-	-
4	Whitehorse Lake	Dewey	-	-	-
5	Timber Lake	Dewey	-	-	-
6	Eagle Butte Lake	Dewey	-	-	-

Ranked List

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