Les Laurentides County Lake Quality

Québec, 119 lakes, average grade A (Excellent)

Les Laurentides County in Québec carries 119 graded lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. On average, Les Laurentides County lakes grade an A. That puts it near the top of the Québec county ranking.

The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Lac Duhamel (A); the most-stressed is Lac Paquette (C).

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Quick Answers for Les Laurentides County

Cleanest lakes in Les Laurentides County →Cleanest lakes in Québec →Safest swimming lakes in Québec →

Planning a trip? Check special fishing regulations for Lac Duhamel — or check the official Québec fishing regulations.

All Lakes in Les Laurentides County

Rank	Lake	Grade	Clarity	Phosphorus
1	Lac Duhamel	A	29.2 ft	2 µg/L
2	Lac des Trois Montagnes	A	23.6 ft	3 µg/L
3	Lac Windigo	A	18.4 ft	3.7 µg/L
4	Lac de la Grange	A	20.2 ft	3.7 µg/L
5	Lac de la DéCharge	A	18.7 ft	3.5 µg/L
6	Lac Chevreuil	A	23 ft	2.8 µg/L
7	Lac Cameron	A	21.3 ft	3.1 µg/L
8	Lac Rognon	A	17.4 ft	4 µg/L
9	Lac de la Sucrerie	A	15.4 ft	3.9 µg/L
10	Lac Sauvage	A	20.3 ft	3.3 µg/L
11	Lac SupéRieur	A	16.4 ft	4.9 µg/L
12	Lac ÉQuerre	A	16.7 ft	4 µg/L
13	Lac Gauthier	A	20.5 ft	3.7 µg/L
14	Lac Joseph	A	15.1 ft	6.6 µg/L
15	Lac Godon	A	16.1 ft	4.7 µg/L
16	Lac Aux Castors	A	17.7 ft	3.9 µg/L
17	Lac la Salle	A	15.7 ft	4.8 µg/L
18	Lac Labelle	A	23.3 ft	2.3 µg/L
19	Lac Plante	A	21.5 ft	2 µg/L
20	Lac Cornu	A	21 ft	3.4 µg/L
21	Lac de la Ripousse	A	19.2 ft	4.5 µg/L
22	Lac Manitou	A	23.1 ft	3.7 µg/L
23	Lac Clyde	A	17.7 ft	3.8 µg/L
24	Lac Boisseau	A	16.4 ft	4.1 µg/L
25	Lac des Pins	A	20.2 ft	3.4 µg/L
26	Lac de la Montagne Noire	A	23 ft	2.9 µg/L
27	Lac des Sables	A	15.9 ft	4.6 µg/L
28	Lac Bessette	A	21.3 ft	5 µg/L
29	Lac Desmarais	A	28.2 ft	4.7 µg/L
30	Lac GéLinas	A	25.6 ft	4 µg/L
31	Lac Doré	A	23 ft	3.5 µg/L
32	Lac Fortier	A	26.9 ft	2.2 µg/L
33	Lac Mercier	A	19 ft	2.7 µg/L
34	Lac Napoléon	A	19.4 ft	4.5 µg/L
35	Lac à la Truite	A	18.5 ft	3.1 µg/L
36	Lac Pierre-Aubin	A	18.5 ft	4.2 µg/L
37	Lac Bibite	A	28.9 ft	3.1 µg/L
38	Lac Tremblant	A	18.4 ft	2.8 µg/L
39	Lac Forget	A	16.1 ft	5.4 µg/L
40	Lac des ÉCorces	A	19 ft	4.3 µg/L
41	Lac Winnetou	A	22.3 ft	3.4 µg/L
42	Lac Xavier	A	27.9 ft	1.8 µg/L
43	Lac Joly	A	29.9 ft	2.7 µg/L
44	Lac Sarrazin	A	15.7 ft	5 µg/L
45	Lac CléMent	A	16.7 ft	3.7 µg/L
46	Lac DéSert	A	24.1 ft	3 µg/L
47	Lac Marie-Louise	A	19.2 ft	4.5 µg/L
48	Lac Chapleau	A	21.7 ft	3.5 µg/L
49	Lac à la Loutre	A	19.2 ft	4.5 µg/L
50	Lac Dufour	A	16.6 ft	5.3 µg/L
51	Lac des Mauves	A	22.8 ft	3.2 µg/L
52	Lac Azur	A	15.7 ft	5.5 µg/L
53	Lac de la Grise	A	19.4 ft	3.3 µg/L
54	Lac Gervais	A	26.2 ft	2.5 µg/L
55	Lac Mulet	A	-	9.8 µg/L
56	Lac Verdure	A	19.4 ft	4.6 µg/L
57	Lac Dufresne	A	16.6 ft	3.6 µg/L
58	Lac Rougeaud	A	19 ft	-
59	Lac de la Blanche	A	20.3 ft	-
60	Lac Larin	A	18.7 ft	-
61	Lac Rond	A	12.5 ft	4.9 µg/L
62	Lac du Brochet	A	14.3 ft	7.3 µg/L
63	Lac Caribou	A	12.8 ft	7.5 µg/L
64	Lac Rond	A	10.7 ft	8.1 µg/L
65	Lac Quenouille	A	10.5 ft	6.9 µg/L
66	Lac Munich	A	14.8 ft	6.2 µg/L
67	Lac ÉQuerre	A	10 ft	6.4 µg/L
68	Lac de la Mine	A	11.6 ft	7.5 µg/L
69	Lac Beaven	A	13.1 ft	6.1 µg/L
70	Lac du Brochet	A	11.8 ft	7.7 µg/L
71	Lac VéZeau	A	13.8 ft	7.3 µg/L
72	Lac à la Caille	A	13.5 ft	5.2 µg/L
73	Lac Carré	A	11.2 ft	5.5 µg/L
74	Lac Nantel	A	11.2 ft	5.1 µg/L
75	Lac Desjardins	A	12.1 ft	6.3 µg/L
76	Lac BarrièRe	A	13.5 ft	6.7 µg/L
77	Lac Lamoureux	A	13.5 ft	6.6 µg/L
78	Lac Ouimet	A	12.8 ft	3.9 µg/L
79	Lac du Rocher	A	13 ft	6.2 µg/L
80	Lac Macshane	A	11.2 ft	6.4 µg/L
81	Lac BéLair	A	13.3 ft	6.5 µg/L
82	Lacs Jumeaux	A	12.1 ft	5.3 µg/L
83	Lac Creux	A	14.4 ft	4.2 µg/L
84	Lac de la Boussois	A	14.4 ft	6.5 µg/L
85	Lac Ovale	A	10.8 ft	8.4 µg/L
86	Lac Lauzon	A	-	12.2 µg/L
87	Lac FrançAis	B	9.8 ft	8.7 µg/L
88	Lac Lacasse	B	9.7 ft	5.9 µg/L
89	Lac Raymond	B	7.2 ft	10.8 µg/L
90	Lac Ludger	B	8.2 ft	7.2 µg/L
91	Lac Papineau	B	8.9 ft	7.7 µg/L
92	Lac Desforges	B	11.2 ft	9.5 µg/L
93	Petit Lac de L'Orignal	B	8.2 ft	8.6 µg/L
94	Lac de la CanardièRe	B	9.5 ft	7.4 µg/L
95	Lac BrûLé	B	7.9 ft	7.1 µg/L
96	Lac Noir	B	8.5 ft	5.3 µg/L
97	Lac Carré	B	9.8 ft	7.5 µg/L
98	Lac Fer à Cheval	B	8.2 ft	11.4 µg/L
99	Lac Croche	B	7.9 ft	7.8 µg/L
100	Lac Mousseux	B	9.5 ft	10.2 µg/L
101	Lac de L'Orignal	B	9.4 ft	12.7 µg/L
102	Lac Gagnon	B	5.7 ft	8.6 µg/L
103	Lac à L'Île	B	7.5 ft	11.8 µg/L
104	Lac Brunet	B	4.9 ft	14.5 µg/L
105	Lac à Brissette	B	7.9 ft	9.1 µg/L
106	Lac Saint-Michel	B	3.9 ft	11.9 µg/L
107	Lac Richer	B	6.2 ft	13.4 µg/L
108	Lac Magnan	B	9.7 ft	12.5 µg/L
109	Lac LavalléE	B	14.1 ft	-
110	Lac de la Raquette	B	13.8 ft	-
111	Lac Colibri	B	6.6 ft	12.2 µg/L
112	Lac Rossignol	B	4.9 ft	12.5 µg/L
113	Lac Boileau	B	5.7 ft	12.3 µg/L
114	Lac Cardin	B	5.6 ft	11.5 µg/L
115	Lac RéMi	B	6.4 ft	9.9 µg/L
116	Lac Maskinongé	B	5.2 ft	14.7 µg/L
117	Lac Aux Ours	C	4.6 ft	12.8 µg/L
118	Lac MéNard	C	3.8 ft	13.8 µg/L
119	Lac Paquette	C	3.3 ft	17.7 µg/L

Other Counties in Québec

Joliette County

1 lake · Avg grade A

La Vallée-de-la-Gatineau County

36 lakes · Avg grade A

Papineau County

33 lakes · Avg grade A

Pontiac County

18 lakes · Avg grade A

Bonaventure County

2 lakes · Avg grade A

Témiscouata County

6 lakes · Avg grade A

See how Les Laurentides County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 38 states.

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Source: EPA National Aquatic Resource Surveys, 2026.