Haliburton County Lake Quality

Ontario, 192 lakes, average grade A (Excellent)

Haliburton County has 192 graded lakes, enough that within-county variation matters as much as the county average. Some are deep glacial basins, others are shallow agricultural-watershed waters, and the grade distribution reflects that mix. On average, Haliburton County lakes grade an A. That puts it near the top of the Ontario 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 Allen Lake (A); the most-stressed is Coleman Lake (C).

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Quick Answers for Haliburton County

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

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

All Lakes in Haliburton County

Rank	Lake	Grade	Clarity	Phosphorus
1	Allen Lake	A	19.4 ft	5 µg/L
2	Basshaunt Lake	A	15.7 ft	-
3	Bear Lake	A	19.4 ft	-
4	Beech Lake	A	15.9 ft	8.9 µg/L
5	Big Barnum Lake	A	19.7 ft	5.3 µg/L
6	Big Brother Lake	A	15.3 ft	5.7 µg/L
7	Big Hawk Lake	A	21.3 ft	5.1 µg/L
8	Big Straggle Lake	A	16.4 ft	7.9 µg/L
9	Billings Lake	A	18 ft	-
10	Bitter Lake	A	19 ft	5.4 µg/L
11	Blue Lake	A	22.3 ft	6.6 µg/L
12	Bob Lake	A	15.1 ft	5.8 µg/L
13	Boshkung Lake	A	18 ft	5.4 µg/L
14	Bow Lake	A	26.2 ft	4.6 µg/L
15	Burdock Lake	A	23 ft	7.8 µg/L
16	Clean Lake	A	27.6 ft	4.7 µg/L
17	Clear Lake	A	20.7 ft	4.4 µg/L
18	Clinto Lake	A	24.6 ft	4.4 µg/L
19	Crown Lake	A	21 ft	6.4 µg/L
20	Drag Lake	A	18 ft	5.6 µg/L
21	Eagle Lake	A	16.4 ft	5.8 µg/L
22	East Lake	A	15.7 ft	7.6 µg/L
23	East Moore Lake	A	18 ft	6.5 µg/L
24	Esson Lake	A	20 ft	6 µg/L
25	Farquhar Lake	A	23 ft	6.9 µg/L
26	Glamor Lake	A	15.7 ft	8.7 µg/L
27	Gooderham Lake	A	18.7 ft	-
28	Goodwin Lake	A	21.3 ft	5.3 µg/L
29	Grace Lake	A	17.4 ft	5.4 µg/L
30	Gull Lake	A	17.1 ft	5.4 µg/L
31	Haliburton Lake	A	17.1 ft	4.4 µg/L
32	Halls Lake	A	23 ft	5.4 µg/L
33	Havelock Lake	A	-	2.7 µg/L
34	Horseshoe Lake	A	20.3 ft	6.8 µg/L
35	Johnson Lake	A	-	3.6 µg/L
36	Kabakwa Lake	A	15.6 ft	8.1 µg/L
37	Kawagama Lake	A	19.7 ft	3.9 µg/L
38	Kelly Lake	A	-	3.5 µg/L
39	Kennisis Lake	A	22.3 ft	3.5 µg/L
40	Kimball Lake	A	29.5 ft	-
41	Kingscote Lake	A	21.3 ft	6.7 µg/L
42	Little Black Lake	A	19.7 ft	4.4 µg/L
43	Little Boshkung Lake	A	18.2 ft	5.3 µg/L
44	Little Hawk Lake	A	19.7 ft	4.9 µg/L
45	Little Horseshoe Lake	A	17.4 ft	-
46	Little Straggle Lake	A	17.4 ft	10.9 µg/L
47	Long Lake	A	19.8 ft	6.1 µg/L
48	Loon Lake	A	16.1 ft	6.9 µg/L
49	Louie Lake	A	27.2 ft	6.8 µg/L
50	Lower Paudash Lake	A	16.4 ft	7.1 µg/L
51	Macdonald Lake	A	24.3 ft	5 µg/L
52	Marsden Lake	A	-	6.2 µg/L
53	Mcfadden Lake	A	-	13 µg/L
54	Minden Lake	A	18 ft	6.6 µg/L
55	Miskwabi Lake	A	26.9 ft	5.3 µg/L
56	Moore Lake	A	16.4 ft	5.8 µg/L
57	Moose Lake	A	17.4 ft	5.4 µg/L
58	Mountain Lake	A	18 ft	4.2 µg/L
59	Negaunne Lake	A	17.1 ft	9.5 µg/L
60	North Pigeon Lake	A	15.7 ft	-
61	Oblong Lake	A	-	5.3 µg/L
62	Paudash Lake	A	16.4 ft	6.1 µg/L
63	Pusey Lake	A	16.4 ft	7 µg/L
64	Redstone Lake	A	17.7 ft	4 µg/L
65	Ross Lake	A	17.4 ft	4.3 µg/L
66	Salerno Lake	A	18 ft	8.3 µg/L
67	Sherborne Lake	A	-	4 µg/L
68	Spar Lake	A	22.3 ft	5.2 µg/L
69	Stormy Lake	A	18 ft	6 µg/L
70	Tamarack Lake	A	18 ft	7.2 µg/L
71	Tory Lake	A	19 ft	6.2 µg/L
72	Twelve Mile Lake	A	18 ft	5.5 µg/L
73	Two Islands Lake	A	17.1 ft	5.9 µg/L
74	Wenona Lake	A	18.2 ft	8.5 µg/L
75	Wildcat Lake	A	-	6 µg/L
76	Wiley Lake	A	15.4 ft	8.7 µg/L
77	Cedar Lake	A	-	12.7 µg/L
78	Centre Lake	A	-	6.5 µg/L
79	Colbourne Lake	A	-	9.8 µg/L
80	Glen Lake	A	-	6.6 µg/L
81	Green Lake	A	-	9.7 µg/L
82	Little Farquhar Lake	A	-	8.6 µg/L
83	Luck Lake	A	-	6.9 µg/L
84	South Beaver Lake	A	-	10 µg/L
85	Beanpole Lake	A	-	7.3 µg/L
86	Bright Lake	A	-	4.9 µg/L
87	Clear Lake	A	-	2.6 µg/L
88	Fourcorner Lake	A	-	4.4 µg/L
89	Frost Lake	A	-	4.1 µg/L
90	Klaxon Lake	A	-	8.3 µg/L
91	Little Bob Lake	A	-	5.1 µg/L
92	Little Galipo Lake	A	-	17.7 µg/L
93	Monmouth Lake	A	-	7.1 µg/L
94	North Galipo Lake	A	-	5.4 µg/L
95	North Lake	A	-	4.9 µg/L
96	Silent Lake	A	-	6.5 µg/L
97	South Anson Lake	A	-	11.8 µg/L
98	South Galipo Lake	A	-	8.4 µg/L
99	St Nora Lake	A	-	4.2 µg/L
100	Tedious Lake	A	-	4.2 µg/L
101	West Galipo Lake	A	-	8 µg/L
102	Dividing Lake	A	19.7 ft	5.3 µg/L
103	Sandy Lake	A	23 ft	6.3 µg/L
104	Black Lake	A	12.8 ft	6.9 µg/L
105	Buckskin Lake	A	14.4 ft	7.5 µg/L
106	Buckskin Lake	A	14.1 ft	6 µg/L
107	Canning Lake	A	14.1 ft	6.8 µg/L
108	Charlie George Lake	A	13.1 ft	9.1 µg/L
109	Cope Lake	A	14.8 ft	7.1 µg/L
110	Crystalline Lake	A	10.7 ft	12 µg/L
111	Davis Lake	A	14.1 ft	6.4 µg/L
112	Deer Lake	A	13.1 ft	6.2 µg/L
113	Denna Lake	A	14.8 ft	8.2 µg/L
114	Eyre Lake	A	11.5 ft	4.6 µg/L
115	Fishtail Lake	A	12.3 ft	6.4 µg/L
116	Fletcher Lake	A	12.8 ft	6 µg/L
117	Grass Lake	A	13.5 ft	11.4 µg/L
118	Herb Lake	A	11.5 ft	9.1 µg/L
119	Hudson Lake	A	12.8 ft	6.8 µg/L
120	Kashagawigamog Lake	A	14.1 ft	6.4 µg/L
121	Kennaway Lake	A	13.1 ft	7.2 µg/L
122	Koshlong Lake	A	12.3 ft	6.3 µg/L
123	Kushog Lake	A	14.8 ft	5.6 µg/L
124	Lipsy Lake	A	13.8 ft	5.1 µg/L
125	Little Canning Lake	A	14.8 ft	9.5 µg/L
126	Little Esson Lake	A	11.5 ft	10.8 µg/L
127	Little Kennisis Lake	A	10.8 ft	4.9 µg/L
128	Little Redstone Lake	A	13.5 ft	5.5 µg/L
129	Livingstone Lake	A	12.1 ft	6.9 µg/L
130	Long Lake	A	14.1 ft	9.1 µg/L
131	Maple Lake	A	14.8 ft	6.4 µg/L
132	Minnicock Lake	A	10.3 ft	14.1 µg/L
133	Niger Lake	A	14.8 ft	7.1 µg/L
134	Otter Lake	A	13.1 ft	4.8 µg/L
135	Pelaw Lake	A	11.5 ft	6.9 µg/L
136	Pen Lake	A	13 ft	7.6 µg/L
137	Percy Lake	A	14.8 ft	6.3 µg/L
138	Raven Lake	A	13.1 ft	5.9 µg/L
139	Rock Lake	A	10.2 ft	9.9 µg/L
140	Saskatchewan Lake	A	11.5 ft	8.1 µg/L
141	South Lake	A	13.1 ft	9.6 µg/L
142	South Portage Lake	A	14.8 ft	9.9 µg/L
143	Soyers Lake	A	14.8 ft	7.8 µg/L
144	Spruce Lake	A	13.8 ft	7.4 µg/L
145	Stocking Lake	A	11.2 ft	7.2 µg/L
146	Troutspawn Lake	A	13.1 ft	5.7 µg/L
147	Wilbermere Lake	A	13.5 ft	6.4 µg/L
148	Wolf Lake	A	12.5 ft	3.3 µg/L
149	Red Pine Lake	A	14.8 ft	5.9 µg/L
150	Boshkong Lake	A	14.8 ft	5.5 µg/L
151	Farm Bay Lake	A	14.8 ft	8.8 µg/L
152	Lousia Lake	A	14.1 ft	3.1 µg/L
153	Pinetree Lake	A	13.8 ft	4.5 µg/L
154	Rosepond Lake	A	11.5 ft	10.9 µg/L
155	Stringer Lake	A	11.9 ft	6.3 µg/L
156	Welcome L. Lake	A	10.8 ft	3.7 µg/L
157	Bat Lake	B	9.8 ft	16.3 µg/L
158	Bat Lake (Bear	B	10.5 ft	-
159	Brady Lake	B	9.8 ft	14.1 µg/L
160	Charlie George Lake	B	11.5 ft	-
161	Cranberry Lake	B	13.3 ft	-
162	Cruiser Lake	B	9.8 ft	9.4 µg/L
163	Devil'S Lake	B	9.8 ft	9.6 µg/L
164	Devil'S Lake	B	9.8 ft	8.2 µg/L
165	Elephant Lake	B	9.8 ft	14 µg/L
166	Greenwood Lake	B	8.2 ft	9.7 µg/L
167	Harvey Lake	B	9.8 ft	6.5 µg/L
168	Head Lake	B	11.2 ft	-
169	Little Cameron Lake	B	9.8 ft	7.7 µg/L
170	Little Glamor Lake	B	9.8 ft	8.7 µg/L
171	Oxtongue Lake	B	9.5 ft	8.4 µg/L
172	Roger Lake	B	9.2 ft	8.8 µg/L
173	Snow Lake	B	6.9 ft	14.5 µg/L
174	Sunrise Lake	B	9 ft	12.8 µg/L
175	Victory Lake	B	9.5 ft	10.1 µg/L
176	West Lake	B	10.5 ft	-
177	Wolfsbane Lake	B	10.5 ft	-
178	Pine Lake	B	-	29.6 µg/L
179	Roundo Lake	B	-	20.7 µg/L
180	Arbuckle Lake	B	6.9 ft	10.5 µg/L
181	Cecil Lake	B	19.5 ft	34.8 µg/L
182	Clydesgale L. Lake	B	7.9 ft	8 µg/L
183	Harry L. Lake	B	9.5 ft	5.3 µg/L
184	Little Canoe Lake	B	9.5 ft	8.3 µg/L
185	Poorhouse Lake	B	6.9 ft	10.8 µg/L
186	Rence L. Lake	B	8.5 ft	6.4 µg/L
187	South Galipo L. Lake	B	6.9 ft	6.1 µg/L
188	Fisher Lake	B	5.7 ft	11.4 µg/L
189	Coleman Lake	C	9.8 ft	-
190	Jordan Lake	C	7.5 ft	-
191	Lower Fletcher Lake	C	8.9 ft	-
192	Monck Lake	C	9.4 ft	-

Other Counties in Ontario

Southwestern Ontario County

1 lake · Avg grade A

Dufferin County

1 lake · Avg grade A

Unorganized Division No. 1 County

1 lake · Avg grade A

Renfrew County

83 lakes · Avg grade A

Lanark County

29 lakes · Avg grade A

Hastings County

66 lakes · Avg grade A

See how Haliburton 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.