What is the cleanest lake in Matawinie County, Québec?

Lac des FrançAis in Matawinie County is the cleanest lake on the readings in Matawinie County, Québec with an EPA water-quality readings of — and 12.8 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 Matawinie County, Québec

Lac des FrançAis in Matawinie County leads the rankings on measured clarity and nutrients and 12.8 ft of clarity. Below are the top 50 cleanest monitored lakes in Matawinie County, Québec, ranked by EPA water quality score.

Ranked List

#	Lake	County	Clarity	Phosphorus	Algae
1	Lac des FrançAis	Matawinie	—	12.8 ft	6.7 µg/L	3.3 µg/L
2	Lac Archambault	Matawinie	—	13.5 ft	3.8 µg/L	2.2 µg/L
3	Lac Ouareau	Matawinie	—	16.7 ft	3.2 µg/L	2.2 µg/L
4	Lac Croche	Matawinie	—	12.8 ft	5.1 µg/L	2.1 µg/L
5	Lac Blondin	Matawinie	—	11.2 ft	10 µg/L	3.9 µg/L
6	Lac Quesnel	Matawinie	—	10.5 ft	7.6 µg/L	2.7 µg/L
7	Lac LafrenièRe	Matawinie	—	10.5 ft	8 µg/L	3.3 µg/L
8	Lac Beaulne	Matawinie	—	7.1 ft	8.9 µg/L	4.7 µg/L
9	Lac Provost	Matawinie	—	19 ft	3.4 µg/L	1.5 µg/L
10	Lac Beauchamp	Matawinie	—	11.5 ft	6.2 µg/L	3.3 µg/L
11	Lac SylvèRe	Matawinie	—	27.9 ft	2.5 µg/L	1.1 µg/L
12	Lac Corbeau	Matawinie	—	15.9 ft	5 µg/L	1.9 µg/L
13	Lac Georges	Matawinie	—	12.1 ft	5.2 µg/L	1.8 µg/L
14	Lac Loyer	Matawinie	—	11.5 ft	8.4 µg/L	2.4 µg/L
15	Lac des ÎLes	Matawinie	—	21 ft	3.1 µg/L	1.2 µg/L
16	RéServoir Taureau	Matawinie	—	7.7 ft	9.2 µg/L	3.4 µg/L
17	Lac à la Truite	Matawinie	—	-	8.7 µg/L	2.3 µg/L
18	Lac Arbour	Matawinie	—	4.3 ft	28.1 µg/L	7.4 µg/L
19	Lac Bastien	Matawinie	—	5.9 ft	12.9 µg/L	3.8 µg/L
20	Lac de la FromentièRe	Matawinie	—	6.6 ft	8.9 µg/L	3.6 µg/L
21	Lac Cloutier	Matawinie	—	17.7 ft	3.9 µg/L	1.9 µg/L
22	Lac des Pins	Matawinie	—	16.1 ft	4.7 µg/L	1.5 µg/L
23	Lac Dontigny	Matawinie	—	5.6 ft	9.4 µg/L	3.8 µg/L
24	Lac Joly	Matawinie	—	7.5 ft	9.3 µg/L	2.5 µg/L
25	Lac Long	Matawinie	—	13.8 ft	6.6 µg/L	2.4 µg/L
26	Lac Marchand	Matawinie	—	5.7 ft	14.2 µg/L	3.9 µg/L
27	Lac Pierre	Matawinie	—	17.7 ft	6.7 µg/L	2.2 µg/L
28	Lac Stevens	Matawinie	—	16.4 ft	6.2 µg/L	2 µg/L
29	Lac Léon	Matawinie	—	10.5 ft	6.6 µg/L	3 µg/L
30	Lac CôMe	Matawinie	—	5.9 ft	9.5 µg/L	4.4 µg/L
31	Lac Beaulac	Matawinie	—	16.7 ft	4.7 µg/L	2 µg/L
32	Lac Jaune	Matawinie	—	11 ft	5.6 µg/L	2.5 µg/L
33	Lac Mondor	Matawinie	—	15.3 ft	4.4 µg/L	2.1 µg/L
34	Lac Berthier	Matawinie	—	8.4 ft	12.3 µg/L	7.4 µg/L
35	Lac Grenier	Matawinie	—	13.3 ft	3.9 µg/L	1.7 µg/L
36	Lac Lasalle	Matawinie	—	6.6 ft	9.6 µg/L	2.6 µg/L
37	Lac Canard	Matawinie	—	7.4 ft	15.3 µg/L	10.4 µg/L
38	Lac Beau Bassin	Matawinie	—	9.8 ft	7.4 µg/L	2.7 µg/L
39	Lac Long	Matawinie	—	10.5 ft	6.7 µg/L	3 µg/L
40	Lac Daniel	Matawinie	—	7.9 ft	11.8 µg/L	3.2 µg/L
41	Lac Louise	Matawinie	—	10 ft	6.9 µg/L	2.7 µg/L
42	Lac Baribeau	Matawinie	—	13 ft	5.3 µg/L	2.1 µg/L
43	Lac du Pimbina	Matawinie	—	10.2 ft	5.4 µg/L	1.8 µg/L
44	Lac Provost	Matawinie	—	12.5 ft	5.2 µg/L	1.8 µg/L
45	Lac BrûLé	Matawinie	—	13.8 ft	4.2 µg/L	2.3 µg/L
46	Lac la Clef	Matawinie	—	9.2 ft	7.2 µg/L	2.6 µg/L
47	Lac la Fontaine	Matawinie	—	15.4 ft	3 µg/L	1.6 µg/L
48	Lac PréVost	Matawinie	—	11.5 ft	4.8 µg/L	1.9 µg/L
49	Lac à L'Île	Matawinie	—	11.2 ft	5.7 µg/L	1.5 µg/L
50	Lac Kataway	Matawinie	—	12.8 ft	4.8 µg/L	2.6 µg/L

Ranked List

More Answers for Matawinie County, Québec