What is the cleanest lake in Le Val-Saint-François County, Québec?

Lac Denison in Le Val-Saint-François County is the cleanest lake on the readings in Le Val-Saint-François County, Québec with an EPA water-quality readings of — and 5.2 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 Le Val-Saint-François County, Québec

Lac Denison in Le Val-Saint-François County leads the rankings on measured clarity and nutrients and 5.2 ft of clarity. Below are the top 10 cleanest monitored lakes in Le Val-Saint-François County, Québec, ranked by EPA water quality score.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Lac Denison	Le Val-Saint-François	—	5.2 ft	24.7 µg/L	5.8 µg/L
2	Lac Desmarais	Le Val-Saint-François	—	8.5 ft	12.7 µg/L	4.5 µg/L
3	Petit Lac Saint-FrançOis	Le Val-Saint-François	—	2.3 ft	161.1 µg/L	77.8 µg/L
4	Lac Boissonneault	Le Val-Saint-François	—	4.9 ft	17.3 µg/L	6.5 µg/L
5	Lac Stukely	Le Val-Saint-François	—	19.4 ft	3.4 µg/L	1.5 µg/L
6	Lac Montjoie	Le Val-Saint-François	—	14.9 ft	6.1 µg/L	2.2 µg/L
7	Lac Miller	Le Val-Saint-François	—	9.5 ft	7.9 µg/L	1.8 µg/L
8	Petit Lac Brompton	Le Val-Saint-François	—	15.7 ft	7.6 µg/L	2.2 µg/L
9	Lac Brais	Le Val-Saint-François	—	9.2 ft	11.9 µg/L	7 µg/L
10	Spooner Pond	Le Val-Saint-François	—	7.1 ft	20 µg/L	6.9 µg/L

Ranked List

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