What is the cleanest lake in Le Rocher-Percé County, Québec?

Lac des Sept ÎLes in Le Rocher-Percé County is the cleanest lake on the readings in Le Rocher-Percé County, Québec 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 Le Rocher-Percé County, Québec

Lac des Sept ÎLes in Le Rocher-Percé County leads the rankings on measured clarity and nutrients. Below are the top 2 cleanest monitored lakes in Le Rocher-Percé County, Québec, ranked by EPA water quality score.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Lac des Sept ÎLes	Le Rocher-Percé	—	-	3.8 µg/L	1 µg/L
2	Lac Vachon	Le Rocher-Percé	—	5.2 ft	13.8 µg/L	3 µg/L

Ranked List

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