B
Parry Sound District County Lake Quality
Ontario, 231 lakes, average grade B (Good)
Parry Sound District County in Ontario carries 231 graded lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. With an average grade of B, Parry Sound District County sits comfortably above the Ontario median.
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 Armishaw Lake (A); the most-stressed is Crawford Lake (D).
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Quick Answers for Parry Sound District County
Cleanest lakes in Parry Sound District County →Cleanest lakes in Ontario →Safest swimming lakes in Ontario →
Planning a trip? Check special fishing regulations for Armishaw Lake — or check the official Ontario fishing regulations.
All Lakes in Parry Sound District County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Armishaw Lake | A | - | 4.6 µg/L |
| 2 | Bells Lake | A | 20 ft | 6 µg/L |
| 3 | Blackstone Lake | A | 15.1 ft | 8.9 µg/L |
| 4 | Blue Lake | A | 21.5 ft | 3.9 µg/L |
| 5 | Burnt Lake | A | 19.7 ft | 6.1 µg/L |
| 6 | Burr Lake | A | - | 19.4 µg/L |
| 7 | Clear Lake | A | 23 ft | 4.9 µg/L |
| 8 | Clear Lake | A | 17.7 ft | 5.2 µg/L |
| 9 | Cranberry Lake | A | - | 17.7 µg/L |
| 10 | Crane Lake | A | 15.7 ft | 6.4 µg/L |
| 11 | Diamond Lake | A | - | 9 µg/L |
| 12 | Durrell Lake | A | 15.4 ft | - |
| 13 | Dyson Lake | A | 17.1 ft | 4.6 µg/L |
| 14 | Emsdale Lake | A | 20.7 ft | 4 µg/L |
| 15 | Flaxman Lake | A | 18 ft | 9 µg/L |
| 16 | Forget Lake | A | 23.3 ft | 5 µg/L |
| 17 | Gilbank Lake | A | 16.1 ft | 7.1 µg/L |
| 18 | Grass Lake | A | 18 ft | 4.9 µg/L |
| 19 | Haines Lake | A | - | 8.5 µg/L |
| 20 | Himbury Lake | A | 17.1 ft | 5.7 µg/L |
| 21 | Horn Lake | A | 21.3 ft | 5.7 µg/L |
| 22 | Island Lake | A | 21.3 ft | 4.8 µg/L |
| 23 | Kernick Lake | A | 21.3 ft | 5.2 µg/L |
| 24 | Linger Long Lake | A | - | 9.3 µg/L |
| 25 | Little Clam Lake | A | 16.7 ft | 4.1 µg/L |
| 26 | Little Lake Joseph | A | 18 ft | 5.7 µg/L |
| 27 | Little Whitefish Lake | A | 16.7 ft | 5.3 µg/L |
| 28 | Long Lake | A | - | 4.2 µg/L |
| 29 | Long Lake | A | 18 ft | 3.6 µg/L |
| 30 | Lower Fry Lake | A | - | 12.4 µg/L |
| 31 | Mcgown Lake | A | 24.6 ft | 6.9 µg/L |
| 32 | Mckechnie Lake | A | 16.1 ft | 6.1 µg/L |
| 33 | Mclean Lake | A | - | 9.3 µg/L |
| 34 | Otter Lake | A | 18 ft | 5.7 µg/L |
| 35 | Pevensey Lake | A | 19.4 ft | 5.6 µg/L |
| 36 | Rankin Lake | A | 15.7 ft | 8.3 µg/L |
| 37 | Richmond Lake | A | 19 ft | 5.8 µg/L |
| 38 | Ruth Lake | A | 18 ft | 5.6 µg/L |
| 39 | Second Lake | A | - | 9.2 µg/L |
| 40 | Sucker Lake | A | 18 ft | 5.3 µg/L |
| 41 | Ten Mile Lake | A | - | 7.8 µg/L |
| 42 | Three Legged Lake | A | 18.7 ft | 4.4 µg/L |
| 43 | Trout Lake | A | - | 7.9 µg/L |
| 44 | Trout Lake | A | 22 ft | 5.4 µg/L |
| 45 | Whitefish Lake | A | 20.3 ft | 4.6 µg/L |
| 46 | Windfall Lake | A | 16.1 ft | 8.6 µg/L |
| 47 | Wright Lake | A | 16.1 ft | 6.4 µg/L |
| 48 | Bittern Lake | A | - | 7.4 µg/L |
| 49 | Bray Lake | A | - | 11.8 µg/L |
| 50 | Bround Lake | A | - | 6.2 µg/L |
| 51 | Fawn Lake | A | - | 13 µg/L |
| 52 | Fish Lake | A | - | 14.2 µg/L |
| 53 | Grey Owl Lake | A | - | 11.5 µg/L |
| 54 | Old Mans Lake | A | - | 11 µg/L |
| 55 | Wauguimakog Lake | A | - | 10 µg/L |
| 56 | Whalley Lake | A | - | 12.6 µg/L |
| 57 | Anselmi Lake | A | - | 8.9 µg/L |
| 58 | Boy Lake | A | - | 5.4 µg/L |
| 59 | Cochrane Lake | A | - | 10.8 µg/L |
| 60 | Hamer Lake | A | - | 9 µg/L |
| 61 | Heaslip Lake | A | - | 6.7 µg/L |
| 62 | Lovell Lake | A | - | 9.2 µg/L |
| 63 | Mather'S Lake | A | - | 11.3 µg/L |
| 64 | Miller Lake | A | - | 5 µg/L |
| 65 | Wiwassasegen Lake | A | - | 7.1 µg/L |
| 66 | Cadden Lake | A | 57.4 ft | 11.4 µg/L |
| 67 | Clear Lake | A | 15.6 ft | 4.3 µg/L |
| 68 | Joseph Lake | A | 18 ft | 5.6 µg/L |
| 69 | North Lake | A | 23.3 ft | 4.1 µg/L |
| 70 | Baby Lake | A | 10 ft | 17.2 µg/L |
| 71 | Back Lake | A | 10.8 ft | 9.3 µg/L |
| 72 | Bay Lake | A | 14.8 ft | 5.7 µg/L |
| 73 | Beaver Lake | A | 11.3 ft | 4.9 µg/L |
| 74 | Bernard Lake | A | 13.8 ft | 6 µg/L |
| 75 | Bolger Lake | A | 13.1 ft | 6.9 µg/L |
| 76 | Brush Lake | A | 12.1 ft | 5.6 µg/L |
| 77 | Carruthers Lake | A | 10 ft | 6.4 µg/L |
| 78 | Clam Lake | A | 14.8 ft | 6.3 µg/L |
| 79 | Clear Lake | A | 11.5 ft | 9.2 µg/L |
| 80 | Conger Lake | A | 14.1 ft | 6.1 µg/L |
| 81 | Cosh Lake | A | 12.3 ft | 6.5 µg/L |
| 82 | Deer Lake | A | 11.8 ft | 11 µg/L |
| 83 | Eagle Lake | A | 14.1 ft | 8 µg/L |
| 84 | Fair Lake | A | 10.8 ft | 8.7 µg/L |
| 85 | Faris Lake | A | 13.1 ft | 4.2 µg/L |
| 86 | Georgian Bay Lake | A | 11.5 ft | 11.5 µg/L |
| 87 | Gerow Lake | A | 10.2 ft | 9.6 µg/L |
| 88 | Gooseneck Lake | A | 10.8 ft | 7.3 µg/L |
| 89 | Groom Lake | A | 11.2 ft | 5.1 µg/L |
| 90 | Harris Lake | A | 11 ft | 8.1 µg/L |
| 91 | Hooton Lake | A | 13.8 ft | 6.2 µg/L |
| 92 | Horseshoe Lake | A | 11.5 ft | 6.9 µg/L |
| 93 | Kapikog Lake | A | 13.1 ft | 6.9 µg/L |
| 94 | Lake Leba | A | 10.7 ft | 12 µg/L |
| 95 | Lane Lake | A | 11.5 ft | 5.9 µg/L |
| 96 | Liebeck Lake | A | 11.2 ft | 5.7 µg/L |
| 97 | Limestone Lake | A | 13.5 ft | 7.3 µg/L |
| 98 | Lioness Lake | A | 12.8 ft | 8.7 µg/L |
| 99 | Little Doe Lake | A | 11.2 ft | 9.7 µg/L |
| 100 | Long Lake | A | 13.8 ft | 16.6 µg/L |
| 101 | Lorimer Lake | A | 13.1 ft | 7.9 µg/L |
| 102 | Magnetawan River Lake | A | 14.1 ft | 9.6 µg/L |
| 103 | Manitouwaba Lake | A | 13.1 ft | 7.8 µg/L |
| 104 | Maple Lake | A | 14.1 ft | 11 µg/L |
| 105 | Martin Lake | A | 13.1 ft | 6.1 µg/L |
| 106 | Mason Lake | A | 10.5 ft | 5.4 µg/L |
| 107 | Mckellar Lake | A | 13.1 ft | 9.4 µg/L |
| 108 | Mcquaby Lake | A | 13.8 ft | 6.6 µg/L |
| 109 | Mill Lake | A | 11.8 ft | 7.8 µg/L |
| 110 | Mirror Lake | A | 12.3 ft | 8.7 µg/L |
| 111 | Mohan Lake | A | 24.6 ft | 29 µg/L |
| 112 | Neighick Lake | A | 10.2 ft | 7.9 µg/L |
| 113 | Otter Lake | A | 12.8 ft | 7.3 µg/L |
| 114 | Perbeth Lake | A | 11.5 ft | 9.1 µg/L |
| 115 | Perry Lake | A | 11.2 ft | 8.2 µg/L |
| 116 | Peters Lake | A | 13.1 ft | 6.6 µg/L |
| 117 | Portage Lake | A | 13.5 ft | 6.2 µg/L |
| 118 | Salmon Lake | A | 14.8 ft | 5.2 µg/L |
| 119 | Sand Lake | A | 14.8 ft | 7.6 µg/L |
| 120 | Scott Lake | A | 12.1 ft | 5.8 µg/L |
| 121 | Shawanaga Lake | A | 10.5 ft | 6.1 µg/L |
| 122 | Spring Lake | A | 14.1 ft | 4.9 µg/L |
| 123 | Star Lake | A | 11.2 ft | 10 µg/L |
| 124 | Sugar Lake | A | 13.1 ft | 7 µg/L |
| 125 | Three Mile Lake | A | 11.5 ft | 10 µg/L |
| 126 | Tiffin Lake | A | 13.8 ft | 6.9 µg/L |
| 127 | Turtle Lake | A | 10.7 ft | 8.8 µg/L |
| 128 | Wolfe Lake | A | 14.8 ft | 12.1 µg/L |
| 129 | Big Caribou Lake | A | 13.1 ft | 7.8 µg/L |
| 130 | Dunstan Lake | A | 12.3 ft | 5.8 µg/L |
| 131 | Noganosh Lake | A | 13.1 ft | 7.5 µg/L |
| 132 | Peyton Lake | A | 13.8 ft | 6.5 µg/L |
| 133 | Scheil Lake | A | 11.5 ft | 13.1 µg/L |
| 134 | Smoky Lake | A | 13.1 ft | 4.5 µg/L |
| 135 | South Branch Lake | A | 12.5 ft | 6.4 µg/L |
| 136 | Sand Lake | A | 13.1 ft | 5.8 µg/L |
| 137 | Ahmic Lake | B | 9.2 ft | 8.8 µg/L |
| 138 | Bartlett Lake | B | 8.2 ft | 10.5 µg/L |
| 139 | Bear Lake | B | 8.2 ft | 8.7 µg/L |
| 140 | Bell Lake | B | 9.8 ft | 11.4 µg/L |
| 141 | Blackwater Lake | B | 7.9 ft | 10 µg/L |
| 142 | Brennan Lake | B | 9.5 ft | 10.2 µg/L |
| 143 | Cecebe Lake | B | 9.5 ft | 9.7 µg/L |
| 144 | Cheer Lake | B | 9.2 ft | 10.6 µg/L |
| 145 | Deer Lake | B | 8.5 ft | 8.4 µg/L |
| 146 | Dick Lake | B | 15.7 ft | 51.2 µg/L |
| 147 | Doe Lake | B | 7.5 ft | 11.4 µg/L |
| 148 | Dollars Lake | B | 7.1 ft | 13.1 µg/L |
| 149 | Draper Lake | B | 9.8 ft | 9.9 µg/L |
| 150 | Duck Lake | B | 8.9 ft | 10.2 µg/L |
| 151 | Duck Lake | B | 9.7 ft | 10.6 µg/L |
| 152 | Duck Lake | B | 8.5 ft | 7.7 µg/L |
| 153 | Fairholme Lake | B | 13.8 ft | - |
| 154 | First Lake | B | 7.9 ft | 7.9 µg/L |
| 155 | Harris Lake | B | 7.9 ft | 9.6 µg/L |
| 156 | Hassard Lake | B | 9.2 ft | 7.5 µg/L |
| 157 | Healey Lake | B | 9.8 ft | 7.9 µg/L |
| 158 | Home Lake | B | - | 25.9 µg/L |
| 159 | Isabella Lake | B | 7.9 ft | 10.3 µg/L |
| 160 | Kashegaba Lake | B | 11.2 ft | - |
| 161 | Kight Lake | B | 9.5 ft | 11.5 µg/L |
| 162 | Kingshott Lake | B | 8.2 ft | 12 µg/L |
| 163 | Le Grou Lake | B | 8.2 ft | 7.9 µg/L |
| 164 | Little Mckellar Lake | B | 10.8 ft | - |
| 165 | Manitouwabing Lake | B | 7.5 ft | 11.5 µg/L |
| 166 | Mcnaught Lake | B | 8.9 ft | 9.6 µg/L |
| 167 | Neville Lake | B | 8.9 ft | 11.2 µg/L |
| 168 | Nine Mile Lake | B | 9.2 ft | 8.1 µg/L |
| 169 | Oastler Lake | B | 9.8 ft | 7.1 µg/L |
| 170 | Pender Lake | B | 14.8 ft | 21.5 µg/L |
| 171 | Pickerel Lake | B | 9.8 ft | 9.9 µg/L |
| 172 | Restoule Lake | B | 8.5 ft | 8.6 µg/L |
| 173 | Roberts Lake | B | 7.5 ft | 8.7 µg/L |
| 174 | Robinson Lake | B | 7.9 ft | 13.7 µg/L |
| 175 | Round Lake | B | 11.3 ft | - |
| 176 | Seguin River Lake | B | 6.9 ft | 17.7 µg/L |
| 177 | Shebeshekong Lake | B | 7.9 ft | 9.4 µg/L |
| 178 | Sovereign Lake | B | 8.5 ft | 6.2 µg/L |
| 179 | Storm Lake | B | 7.5 ft | 6.9 µg/L |
| 180 | Strathdee Lake | B | 8.9 ft | 10.4 µg/L |
| 181 | Third Lake | B | 9.5 ft | 9.5 µg/L |
| 182 | Tub Lake | B | 9.4 ft | 7.3 µg/L |
| 183 | Tucker Lake | B | 9.2 ft | 8.1 µg/L |
| 184 | Upper French River Lake | B | 8.2 ft | 11.5 µg/L |
| 185 | Virtue Lake | B | 9.2 ft | 10.1 µg/L |
| 186 | Wahwashkesh Lake | B | 9.8 ft | 6.6 µg/L |
| 187 | Watson Lake | B | 9.5 ft | 9.7 µg/L |
| 188 | Whitestone Lake | B | 9.8 ft | 8.8 µg/L |
| 189 | Woodrow Lake | B | 9.2 ft | 9.2 µg/L |
| 190 | Yarrow Lake | B | 10.2 ft | - |
| 191 | Cole Lake | B | - | 20.7 µg/L |
| 192 | Mirage Lake | B | - | 23.7 µg/L |
| 193 | Cripple Lake | B | 8.9 ft | 8.4 µg/L |
| 194 | L Whetstone Lake | B | 9 ft | 10.1 µg/L |
| 195 | Little Butt Lake | B | 9.8 ft | 12.7 µg/L |
| 196 | Pickeral Lake | B | 8.2 ft | 12.3 µg/L |
| 197 | Washwashkesh Lake | B | 9.8 ft | 13.4 µg/L |
| 198 | Windfall Lake | B | 9.8 ft | 10.3 µg/L |
| 199 | Wolf Lake | B | 7.9 ft | 7.8 µg/L |
| 200 | Waterclear L. Lake | B | 7.9 ft | 10 µg/L |
| 201 | Buck Lake | B | 5.9 ft | 10.5 µg/L |
| 202 | Commanda Lake | B | 6.1 ft | 10.8 µg/L |
| 203 | Jack'S Lake | B | 5.1 ft | 13.3 µg/L |
| 204 | La Brash Lake | B | 6.1 ft | 10.6 µg/L |
| 205 | Mcdonald Lake | B | 6.2 ft | 9.2 µg/L |
| 206 | Mctaggart Lake | B | 6.2 ft | 10.5 µg/L |
| 207 | Middle Doe Lake | B | 4.9 ft | 8.7 µg/L |
| 208 | Moffat Lake | B | 4.8 ft | 15.7 µg/L |
| 209 | Mutton Lake | B | 6.6 ft | 9.3 µg/L |
| 210 | Pickering Lake | B | 5.9 ft | 10.2 µg/L |
| 211 | Sturgeon Bay Lake | B | 5.9 ft | 13.5 µg/L |
| 212 | Upper Fry Lake | B | 6.2 ft | 17.4 µg/L |
| 213 | Vowel Lake | B | 5.9 ft | 16.9 µg/L |
| 214 | Big Deer Lake | B | 6.6 ft | 8.8 µg/L |
| 215 | Balsam Lake | B | 5.2 ft | 15.5 µg/L |
| 216 | Gurd Lake | B | 4.9 ft | 17.3 µg/L |
| 217 | Grundy Lake | B | 5.9 ft | 11.6 µg/L |
| 218 | Lake Adele | C | 6.1 ft | 23.3 µg/L |
| 219 | Little Cornick Lake | C | 9 ft | - |
| 220 | Manson Lake | C | 7.2 ft | - |
| 221 | Portage Lake | C | 7.2 ft | - |
| 222 | Shelbourne Pond | C | 7.2 ft | - |
| 223 | Wauquimakog Lake | C | 9.8 ft | - |
| 224 | Giroux Lake | C | 3.3 ft | 16 µg/L |
| 225 | Nine Mile Lake | C | 9.5 ft | - |
| 226 | Stormy Lake | C | 7.9 ft | - |
| 227 | Winisk River Lake | C | 3.3 ft | 17.2 µg/L |
| 228 | Crawford Lake | D | 6.2 ft | - |
| 229 | Foote Lake | D | 6.6 ft | - |
| 230 | Kawigamog Lake | D | 5.2 ft | - |
| 231 | Cecebe Lake | D | 3.6 ft | - |
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Source: EPA National Aquatic Resource Surveys, 2026.