What is the cleanest lake in McClain County, Oklahoma?

Purcell Lake in McClain County is the cleanest lake on the readings in McClain County, Oklahoma with an EPA water-quality readings of —.

How are these rankings calculated?

Nutrients and algae, total phosphorus, nitrogen, chlorophyll-a and turbidity, are read 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 McClain County, Oklahoma

Purcell Lake in McClain County leads the rankings on measured clarity and nutrients. Below are the top 2 cleanest monitored lakes in McClain County, Oklahoma, ranked by EPA water quality score.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Purcell Lake	McClain	—	-	-	-
2	Byars Lake	McClain	—	-	-	-

Ranked List

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