Cleanest Lakes in Peterborough County, Ontario
Anstruther Lake in Peterborough County leads the rankings with a water quality grade of A and 16.4 ft of clarity. Below are the 50 cleanest monitored lakes in Peterborough County, Ontario, ranked by EPA water quality score.
Ranked List
| # | Lake | County | Grade | Clarity | Phosphorus | Algae |
|---|---|---|---|---|---|---|
| 1 | Anstruther Lake | Peterborough | A | 16.4 ft | 6.2 µg/L | - |
| 2 | Belmont Lake | Peterborough | A | 17.1 ft | 7.2 µg/L | - |
| 3 | Buzzard Lake | Peterborough | A | 20 ft | 13.3 µg/L | - |
| 4 | Chandos Lake | Peterborough | A | 16.4 ft | 7.6 µg/L | - |
| 5 | Crystal Lake | Peterborough | A | 16.4 ft | 9.4 µg/L | - |
| 6 | Eels Lake | Peterborough | A | 17.1 ft | 5.7 µg/L | - |
| 7 | Jacks Lake | Peterborough | A | 16.4 ft | 8.4 µg/L | - |
| 8 | Julian Lake | Peterborough | A | 16.7 ft | 6.8 µg/L | - |
| 9 | Kasshabog Lake | Peterborough | A | 15.7 ft | 7.1 µg/L | - |
| 10 | Katchewanooka Lake | Peterborough | A | 16.4 ft | 16.4 µg/L | - |
| 11 | Lasswade Lake | Peterborough | A | 15.7 ft | 8.1 µg/L | - |
| 12 | Long Lake | Peterborough | A | 16.9 ft | 5.6 µg/L | - |
| 13 | Loon Call Lake | Peterborough | A | 15.1 ft | 12.2 µg/L | - |
| 14 | Methuen Lake | Peterborough | A | 16.9 ft | 7.6 µg/L | - |
| 15 | Oak Lake | Peterborough | A | 15.7 ft | 7 µg/L | - |
| 16 | Picard Lake | Peterborough | A | 18 ft | 6.7 µg/L | - |
| 17 | Salmon Lake | Peterborough | A | 24.8 ft | 6.3 µg/L | - |
| 18 | Sandy Lake | Peterborough | A | 15.1 ft | 6.4 µg/L | - |
| 19 | Upper Stoney Lake | Peterborough | A | 19 ft | 8 µg/L | - |
| 20 | White Lake | Peterborough | A | 16.1 ft | 9 µg/L | - |
| 21 | Tallan Lake | Peterborough | A | 20 ft | 10.5 µg/L | - |
| 22 | Beaver Lake | Peterborough | A | 13 ft | 7.7 µg/L | - |
| 23 | Big Bald Lake | Peterborough | A | 12 ft | 11.9 µg/L | - |
| 24 | Bolger Lake | Peterborough | A | 14.1 ft | 14.9 µg/L | - |
| 25 | Catchacoma Lake | Peterborough | A | 10.8 ft | 5.2 µg/L | - |
| 26 | Clear Lake | Peterborough | A | 12.1 ft | 15.5 µg/L | - |
| 27 | Cordova Lake | Peterborough | A | 14.8 ft | 10.7 µg/L | - |
| 28 | Crab Lake | Peterborough | A | 11.5 ft | 9.7 µg/L | - |
| 29 | Fortescue Lake | Peterborough | A | 14.8 ft | 6.1 µg/L | - |
| 30 | Galloway Lake | Peterborough | A | 10.2 ft | 13.6 µg/L | - |
| 31 | Lanes Lake | Peterborough | A | 12.6 ft | 4.5 µg/L | - |
| 32 | Little Long Lake | Peterborough | A | 13.5 ft | 9 µg/L | - |
| 33 | Lovesick Lake | Peterborough | A | 14.8 ft | 19 µg/L | - |
| 34 | Lower Buckhorn Lake | Peterborough | A | 12.5 ft | 18.2 µg/L | - |
| 35 | Mississagua Lake | Peterborough | A | 14.8 ft | 6 µg/L | - |
| 36 | Round Lake | Peterborough | A | 13.1 ft | 9.1 µg/L | - |
| 37 | Stony Lake | Peterborough | A | 13.1 ft | 14.9 µg/L | - |
| 38 | West Twin Lake | Peterborough | A | 10.8 ft | 7.4 µg/L | - |
| 39 | White Lake | Peterborough | A | 14.1 ft | 12.8 µg/L | - |
| 40 | Wolf Lake | Peterborough | A | 13.5 ft | 8.4 µg/L | - |
| 41 | Dummer Lake | Peterborough | A | 15.7 ft | 22.4 µg/L | - |
| 42 | Jack Lake | Peterborough | A | 12.5 ft | 9.8 µg/L | - |
| 43 | Bass Lake | Peterborough | B | 9.8 ft | 11.6 µg/L | - |
| 44 | Bottle Lake | Peterborough | B | 9.2 ft | 10.1 µg/L | - |
| 45 | Bott'S Lake | Peterborough | B | 9.8 ft | 12 µg/L | - |
| 46 | Buckhorn Lake | Peterborough | B | 9.5 ft | 17.8 µg/L | - |
| 47 | Chemong Lake | Peterborough | B | 8.5 ft | 16.1 µg/L | - |
| 48 | Clydesdale Lake | Peterborough | B | 6.9 ft | 10.3 µg/L | - |
| 49 | Cold Lake | Peterborough | B | 7.9 ft | 7 µg/L | - |
| 50 | Loucks Lake | Peterborough | B | 15.7 ft | 49.8 µg/L | - |