What is the cleanest lake in Benton County, Missouri?

H S Truman Reservoir in Benton County is the highest-rated lake in Benton County, Missouri with an EPA water quality grade of D and 3.8 feet of water clarity.

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 Benton County, Missouri

H S Truman Reservoir in Benton County leads the rankings with a water quality grade of D and 3.8 ft of clarity. Below are the top 4 cleanest monitored lakes in Benton County, Missouri, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	H S Truman Reservoir	Benton	D	3.8 ft	36.7 µg/L	17.2 µg/L
2	Harry S Truman Reservoir	Benton	NR	-	-	-
3	Harry S Truman Reservoir	Benton	NR	-	-	-
4	Junges Lake	Benton	NR	-	-	-

Ranked List

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