What is the cleanest lake in Les Appalaches County, Québec?

Lac de L'Est in Les Appalaches County is the cleanest lake on the readings in Les Appalaches County, Québec with an EPA water-quality readings of — and 9.5 feet of water clarity.

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 Les Appalaches County, Québec

Lac de L'Est in Les Appalaches County leads the rankings on measured clarity and nutrients and 9.5 ft of clarity. Below are the top 12 cleanest monitored lakes in Les Appalaches County, Québec, ranked by EPA water quality score.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Lac de L'Est	Les Appalaches	—	9.5 ft	9.9 µg/L	4.7 µg/L
2	Lac à la Truite	Les Appalaches	—	8.9 ft	7.4 µg/L	3 µg/L
3	Lac Bolduc	Les Appalaches	—	4.1 ft	27.3 µg/L	7.5 µg/L
4	Lac Rond	Les Appalaches	—	3.3 ft	21.3 µg/L	9.9 µg/L
5	Petit Lac Saint-FrançOis	Les Appalaches	—	3.9 ft	14.1 µg/L	4.8 µg/L
6	Lac Breeches	Les Appalaches	—	12.8 ft	4.1 µg/L	1.5 µg/L
7	Lac du Huit	Les Appalaches	—	6.6 ft	13.5 µg/L	6.4 µg/L
8	Lac Caribou	Les Appalaches	—	3.6 ft	17.9 µg/L	8.3 µg/L
9	Lac BéCancour	Les Appalaches	—	3.3 ft	22.1 µg/L	9 µg/L
10	Lac Aylmer	Les Appalaches	—	7.2 ft	11.5 µg/L	4.5 µg/L
11	Lac à la Truite	Les Appalaches	—	3 ft	64.2 µg/L	15.8 µg/L
12	Lac Noir	Les Appalaches	—	3.6 ft	29.5 µg/L	14.4 µg/L

Ranked List

More Answers for Les Appalaches County, Québec