What is the cleanest lake in D'Autray County, Québec?

Lac Mandeville in D'Autray County is the cleanest lake on the readings in D'Autray County, Québec with an EPA water-quality readings of — and 3.9 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 D'Autray County, Québec

Lac Mandeville in D'Autray County leads the rankings on measured clarity and nutrients and 3.9 ft of clarity. Below are the top 14 cleanest monitored lakes in D'Autray County, Québec, ranked by EPA water quality score.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Lac Mandeville	D'Autray	—	3.9 ft	28.7 µg/L	34 µg/L
2	Lac Deligny	D'Autray	—	12.8 ft	7.3 µg/L	3.4 µg/L
3	Lac Long	D'Autray	—	11.6 ft	5 µg/L	2.7 µg/L
4	Lac HéNault	D'Autray	—	7.1 ft	7.5 µg/L	3.4 µg/L
5	Lac Rouge	D'Autray	—	14.1 ft	4.6 µg/L	2 µg/L
6	Lac Sainte-Rose	D'Autray	—	5.7 ft	14.2 µg/L	4.4 µg/L
7	Lac Thomas	D'Autray	—	16.7 ft	3.8 µg/L	1.7 µg/L
8	Lac Mcgrey	D'Autray	—	9.8 ft	6.5 µg/L	4.2 µg/L
9	Lac à L'Île	D'Autray	—	14.4 ft	6.7 µg/L	3.2 µg/L
10	Lac Creux	D'Autray	—	30.8 ft	3.3 µg/L	1.1 µg/L
11	Lac Croche	D'Autray	—	10.2 ft	8.1 µg/L	3.7 µg/L
12	Lac Hamelin	D'Autray	—	3 ft	21.3 µg/L	8.2 µg/L
13	Lac Lewis	D'Autray	—	6.7 ft	18 µg/L	14.3 µg/L
14	Lac Maskinongé	D'Autray	—	8.9 ft	9.5 µg/L	4.3 µg/L

Ranked List

More Answers for D'Autray County, Québec