Hastings County Lake Quality

Ontario, 66 lakes, average grade A (Excellent)

Hastings County in Ontario carries 66 graded lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. The county's average grade is A — among the cleanest in Ontario. 52 lakes pull an A on their own, and almost none fall into the D or F brackets.

Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Bay Lake (A) is the cleanest in the county.

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Quick Answers for Hastings County

Cleanest lakes in Hastings County →Cleanest lakes in Ontario →Safest swimming lakes in Ontario →

Planning a trip? Check special fishing regulations for Bay Lake — or check the official Ontario fishing regulations.

All Lakes in Hastings County

Rank	Lake	Grade	Clarity	Phosphorus
1	Bay Lake	A	21.2 ft	18.9 µg/L
2	Cashel Lake	A	17.6 ft	-
3	Clark Lake	A	19.2 ft	5.3 µg/L
4	Coe Island Lake	A	17.2 ft	-
5	Dickey Lake	A	18 ft	5.5 µg/L
6	Gunter Lake	A	18.5 ft	-
7	Hicks Lake	A	16.1 ft	6.7 µg/L
8	Jeffrey Lake	A	23 ft	-
9	Lake of Islands	A	16.4 ft	7.2 µg/L
10	L'Amable Lake	A	23.8 ft	3.9 µg/L
11	Limerick Lake	A	19.7 ft	13.5 µg/L
12	Long Pond Lake	A	18 ft	-
13	Mephisto Lake	A	19.7 ft	8.4 µg/L
14	Papineau Lake	A	22.8 ft	-
15	Purdy Lake	A	15.4 ft	-
16	Steenburg Lake	A	15.7 ft	9 µg/L
17	Wollaston Lake	A	16.4 ft	6.5 µg/L
18	Carfrae Lake	A	-	4.3 µg/L
19	Mcknight Lake	A	-	12.9 µg/L
20	North Chainy Lake	A	-	7.4 µg/L
21	Ragged Lake	A	-	18 µg/L
22	Tait Lake	A	-	7.5 µg/L
23	Buck Lake	A	-	10.9 µg/L
24	Diamond Lake	A	-	7.6 µg/L
25	Fraser Lake	A	-	18.8 µg/L
26	Holland Lake	A	-	5.9 µg/L
27	Jamieson Lake	A	-	8.2 µg/L
28	John Lake	A	-	10.5 µg/L
29	Lavallee Lake	A	-	6.8 µg/L
30	Limestone Lake	A	-	6.6 µg/L
31	Little Mayo Lake	A	-	7.4 µg/L
32	Mayo Lake	A	-	7.2 µg/L
33	Robinson Lake	A	-	5.8 µg/L
34	Thanet Lake	A	18 ft	6.1 µg/L
35	Whyte Lake	A	-	16 µg/L
36	Woods Lake	A	-	9.9 µg/L
37	Little Meach Lake	A	15.4 ft	5.2 µg/L
38	Twin Sister Lake	A	17.7 ft	6.9 µg/L
39	Baptiste Lake	A	13.1 ft	9.2 µg/L
40	Crowe Lake	A	14.8 ft	9.8 µg/L
41	Faraday Lake	A	14.8 ft	6 µg/L
42	Kamaniskeg Lake	A	14.8 ft	6.2 µg/L
43	Salmon Trout Lake	A	12.6 ft	11.4 µg/L
44	Spectacle Lake	A	10.2 ft	13.8 µg/L
45	Sweets Lake	A	14.8 ft	8.3 µg/L
46	Tangamong Lake	A	13.8 ft	5.9 µg/L
47	Twin Sisters Lakes	A	12.5 ft	13.1 µg/L
48	Wadsworth Lake	A	10.8 ft	11.5 µg/L
49	Echo Lake	A	14.1 ft	6 µg/L
50	Hound Lake	A	11.5 ft	8.8 µg/L
51	Meach Lake	A	13.5 ft	6.6 µg/L
52	Rylstone Lake	A	10.1 ft	9.1 µg/L
53	Bay of Quinte Lake	B	16.4 ft	31.4 µg/L
54	Big Mink Lake	B	7.5 ft	9 µg/L
55	Boulter Lake	B	9.8 ft	6.6 µg/L
56	Glanmire Lake	B	11.5 ft	-
57	Jarvis Lake	B	9.8 ft	18.1 µg/L
58	Lower Perieau Lake	B	8.5 ft	14.4 µg/L
59	Moira Lake	B	8.5 ft	19.5 µg/L
60	Peter Lake	B	10.8 ft	-
61	St Peter Lake	B	9.2 ft	7.2 µg/L
62	Yuill Lake	B	9.8 ft	9.6 µg/L
63	Fosters Lake	B	9.5 ft	11.2 µg/L
64	Stoco Lake	B	6.6 ft	15.6 µg/L
65	Upper Perieau Lake	B	7.9 ft	20.7 µg/L
66	Jordan Lake	C	7.5 ft	-