What is the cleanest lake in Pushmataha County, Oklahoma?

Lake Nahni Waiya Tuskahomma in Pushmataha County is the highest-rated lake in Pushmataha County, Oklahoma with an EPA water quality grade of D.

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 Pushmataha County, Oklahoma

Lake Nahni Waiya Tuskahomma in Pushmataha County leads the rankings with a water quality grade of D. Below are the top 2 cleanest monitored lakes in Pushmataha County, Oklahoma, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Lake Nahni Waiya Tuskahomma	Pushmataha	D	-	250 µg/L	-
2	Lake Sardis Clayton	Pushmataha	D	-	260 µg/L	-

Ranked List

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