Cleanest Lakes in Frontenac County, Ontario
Ardoch Lake in Frontenac County leads the rankings with a water quality grade of A and 19 ft of clarity. Below are the 50 cleanest monitored lakes in Frontenac County, Ontario, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Ardoch Lake | Frontenac | A | 19 ft | 6.8 µg/L | - |
| 2 | Big Clear Lake | Frontenac | A | 15.1 ft | 9 µg/L | - |
| 3 | Big Clear Lake | Frontenac | A | 21.3 ft | 8.1 µg/L | - |
| 4 | Big Olhman Lake | Frontenac | A | 16.4 ft | 13.8 µg/L | - |
| 5 | Blue Lake | Frontenac | A | 37.7 ft | 8.1 µg/L | - |
| 6 | Bobs Lake | Frontenac | A | 15.7 ft | 9.3 µg/L | - |
| 7 | Brule Lake | Frontenac | A | 23.3 ft | 5.4 µg/L | - |
| 8 | Buckshot Lake | Frontenac | A | 17.1 ft | 5.8 µg/L | - |
| 9 | Burridge Lake | Frontenac | A | 17.2 ft | 9 µg/L | - |
| 10 | Canonto Lake | Frontenac | A | 20 ft | 6.2 µg/L | - |
| 11 | Crow Lake | Frontenac | A | 17.4 ft | 7 µg/L | - |
| 12 | Desert Lake | Frontenac | A | 19 ft | 9.1 µg/L | - |
| 13 | Devil Lake | Frontenac | A | 21.3 ft | 7.4 µg/L | - |
| 14 | Eagle Lake | Frontenac | A | 17.9 ft | 8.5 µg/L | - |
| 15 | Fourteen Island Lake | Frontenac | A | 21.3 ft | 11.4 µg/L | - |
| 16 | Gould Lake | Frontenac | A | 18 ft | 6.7 µg/L | - |
| 17 | Green Lake | Frontenac | A | 21.2 ft | 5.2 µg/L | - |
| 18 | Grindstone Lake | Frontenac | A | 18 ft | 4.9 µg/L | - |
| 19 | Kashwakamak Lake | Frontenac | A | 15.7 ft | 7.2 µg/L | - |
| 20 | Little Long Lake | Frontenac | A | 14.9 ft | 9.7 µg/L | - |
| 21 | Long Schooner Lake | Frontenac | A | 20.2 ft | 16.4 µg/L | - |
| 22 | Lower Rock Lake | Frontenac | A | 16.1 ft | 8.3 µg/L | - |
| 23 | Lucky Lake | Frontenac | A | 21.3 ft | 8.2 µg/L | - |
| 24 | Mackie Lake | Frontenac | A | 19 ft | 5.3 µg/L | - |
| 25 | Mazinaw Lake | Frontenac | A | 16.1 ft | 4.3 µg/L | - |
| 26 | Milk Lake | Frontenac | A | 20.7 ft | 11.6 µg/L | - |
| 27 | Mississagagon Lake | Frontenac | A | 23 ft | 6.3 µg/L | - |
| 28 | Mosque Lake | Frontenac | A | 16.1 ft | 6.4 µg/L | - |
| 29 | Palmerston Lake | Frontenac | A | 21.3 ft | 4.8 µg/L | - |
| 30 | Pine Lake | Frontenac | A | 16.4 ft | 6.5 µg/L | - |
| 31 | Potspoon Lake | Frontenac | A | 17.1 ft | 11.3 µg/L | - |
| 32 | Round Schooner Lake | Frontenac | A | 16.4 ft | 8.7 µg/L | - |
| 33 | Sharbot Lake | Frontenac | A | 17.1 ft | 8.9 µg/L | - |
| 34 | Shawenegog Lake | Frontenac | A | 15.4 ft | 6.7 µg/L | - |
| 35 | Sigsworth Lake | Frontenac | A | 16.4 ft | 9.1 µg/L | - |
| 36 | Silver Lake | Frontenac | A | 20 ft | 6.3 µg/L | - |
| 37 | Sunday Lake | Frontenac | A | 15.3 ft | 8 µg/L | - |
| 38 | Sydenham Lake | Frontenac | A | 15.7 ft | 12.3 µg/L | - |
| 39 | Thirteen Island Lake | Frontenac | A | 15.1 ft | 12.5 µg/L | - |
| 40 | Thirty Island Lake | Frontenac | A | 18.7 ft | 10.5 µg/L | - |
| 41 | Wolfe Lake | Frontenac | A | 20 ft | 9.9 µg/L | - |
| 42 | Govan Lake | Frontenac | A | 17.2 ft | 15.6 µg/L | - |
| 43 | Big Gull Lake | Frontenac | A | 13.1 ft | 8.1 µg/L | - |
| 44 | Birch Lake | Frontenac | A | 14.1 ft | 8.8 µg/L | - |
| 45 | Buck Lake | Frontenac | A | 13.1 ft | 9.7 µg/L | - |
| 46 | Buckshot Lake | Frontenac | A | 13.5 ft | 5.1 µg/L | - |
| 47 | Butterill Lake | Frontenac | A | 14.4 ft | 14.1 µg/L | - |
| 48 | Canoe Lake | Frontenac | A | 14.1 ft | 7.9 µg/L | - |
| 49 | Carnahan Lake | Frontenac | A | 10.5 ft | 19 µg/L | - |
| 50 | Crotch Lake | Frontenac | A | 13.1 ft | 7.7 µg/L | - |