What is the cleanest lake in Hamilton County, Indiana?

Morse Reservoir in Hamilton County is the highest-rated lake in Hamilton 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 Hamilton County, Indiana

Morse Reservoir in Hamilton County leads the rankings with a water quality grade of NR. Below are the top 3 cleanest monitored lakes in Hamilton County, Indiana, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Morse Reservoir	Hamilton	NR	-	-	-
2	Lake Woodland	Hamilton	NR	-	-	-
3	Geist Reservoir	Hamilton	NR	-	-	-

Ranked List

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