What is the cleanest lake in Brown County, Indiana?

Lake LaSalle in Brown County is the highest-rated lake in Brown County, Indiana with an EPA water quality grade of NR.

How are these rankings calculated?

Lakes are graded A through F on nutrients and algae — total phosphorus, nitrogen, chlorophyll-a, and turbidity — against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown; it is not the letter. Lakes without enough recent samples are UNRATED, not given an F. Source data comes from the EPA Water Quality Portal.

Cleanest Lakes in Brown County, Indiana

Lake LaSalle in Brown County leads the rankings with a water quality grade of NR. Below are the top 8 cleanest monitored lakes in Brown County, Indiana, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Lake LaSalle	Brown	NR	-	-	-
2	Shady Oaks Lake	Brown	NR	-	-	-
3	Gallahue Lake	Brown	NR	-	-	-
4	Edward Lewis Lake Dam	Brown	NR	-	-	-
5	Yellowwood Lake	Brown	NR	-	-	-
6	Cordry Lake	Brown	NR	-	-	-
7	Green Lake	Brown	NR	-	-	-
8	Tousley Lake	Brown	NR	-	-	-

Ranked List

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