What is the cleanest lake in Iron County, Missouri?

Council Bluff Lake in Iron County is the highest-rated lake in Iron County, Missouri with an EPA water quality grade of A and 13.1 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 Iron County, Missouri

Council Bluff Lake in Iron County leads the rankings with a water quality grade of A and 13.1 ft of clarity. Below are the top 6 cleanest monitored lakes in Iron County, Missouri, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Council Bluff Lake	Iron	A	13.1 ft	5.7 µg/L	1.3 µg/L
2	Asarco Lake	Iron	NR	-	-	-
3	Lake Killarney	Iron	NR	-	-	-
4	Crane Lake	Iron	NR	-	-	-
5	Snow Hollow Lake	Iron	NR	-	-	-
6	Amax Tailing Pond	Iron	NR	-	-	-

Ranked List

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