Lake maps of Ontario

• Lake Simcoe depth mapDeepest contour 41 m (135 ft) · 722 km²
• Pigeon Lake depth mapDeepest contour 12.2 m (40 ft) · 49 km²
• Rice Lake depth mapDeepest contour 11 m (36 ft) · 96 km²
• Lake Muskoka depth mapDeepest contour 72 m (236 ft) · 121 km²
• Lake Nipissing depth mapDeepest contour 70 m (230 ft) · 861 km²
• Sturgeon Lake depth mapDeepest contour 10.7 m (35 ft) · 44 km²
• Charleston Lake depth mapDeepest contour 90 m (295 ft) · 27 km²
• Balsam Lake depth mapDeepest contour 12.2 m (40 ft) · 48 km²
• Lake of Bays depth mapDeepest contour 61 m (200 ft) · 68 km²
• Lake Temagami depth mapDeepest contour 73.2 m (240 ft) · 208 km²
• Lake Scugog depth mapDeepest contour 6.1 m (20 ft) · 66 km²
• Lake Rosseau depth mapDeepest contour 89 m (292 ft) · 63 km²
• Sharbot Lake depth mapDeepest contour 30.5 m (100 ft) · 15 km²
• Lake Joseph depth mapDeepest contour 92 m (302 ft) · 52 km²
• Chemong Lake depth mapDeepest contour 5.5 m (18 ft) · 16 km²
• Sparrow Lake depth mapDeepest contour 12.2 m (40 ft) · 11 km²
• Buckhorn Lake depth mapDeepest contour 12.2 m (40 ft) · 31 km²
• Bobs Lake depth mapDeepest contour 24.4 m (80 ft) · 29 km²
• Kawagama Lake depth mapDeepest contour 75 m (246 ft) · 31 km²
• Muskrat Lake depth mapDeepest contour 64 m (210 ft) · 12 km²
• Big Rideau Lake depth mapDeepest contour 91.4 m (300 ft) · 46 km²
• Baptiste Lake depth mapDeepest contour 30.5 m (100 ft) · 22 km²
• Chandos Lake depth mapDeepest contour 45.7 m (150 ft) · 16 km²
• Lake Vernon depth mapDeepest contour 42 m (138 ft) · 16 km²
• Mazinaw Lake depth mapDeepest contour 134.1 m (440 ft) · 16 km²
• Conestogo Lake depth mapDeepest contour 24 m (79 ft) · 6.2 km²
• Haliburton Lake depth mapDeepest contour 50 m (164 ft) · 10 km²
• Stony Lake depth mapDeepest contour 31 m (102 ft) · 27 km²
• Lac Seul depth mapDeepest contour 36.6 m (120 ft) · 1,362 km²
• Golden Lake depth mapDeepest contour 24.4 m (80 ft) · 36 km²
• Mississippi Lake depth mapDeepest contour 9.1 m (30 ft) · 24 km²
• Kahshe Lake depth mapDeepest contour 18.3 m (60 ft) · 8.3 km²
• Paudash Lake depth mapDeepest contour 48.8 m (160 ft) · 7.3 km²
• Skeleton Lake depth mapDeepest contour 75 m (246 ft) · 21 km²
• Loughborough Lake depth mapDeepest contour 33.5 m (110 ft) · 19 km²
• Restoule Lake depth mapDeepest contour 24.4 m (80 ft) · 12 km²
• Kashwakamak Lake depth mapDeepest contour 21.3 m (70 ft) · 12 km²
• Three Mile Lake depth mapDeepest contour 9.1 m (30 ft) · 8.7 km²
• Big Gull Lake depth mapDeepest contour 24.4 m (80 ft) · 24 km²
• Ahmic Lake depth mapDeepest contour 24.4 m (80 ft) · 16 km²
• Lower Buckhorn Lake depth mapDeepest contour 11 m (36 ft) · 12 km²
• Crowe Lake depth mapDeepest contour 15.2 m (50 ft) · 10 km²
• Moira Lake depth mapDeepest contour 9.1 m (30 ft) · 8.5 km²
• Canal Lake depth mapDeepest contour 3.7 m (12 ft) · 8.5 km²
• Kashagawigamog Lake depth mapDeepest contour 39.6 m (130 ft) · 8.4 km²
• Ramsey Lake depth mapDeepest contour 23 m (75 ft) · 7.9 km²
• Lake Bernard depth mapDeepest contour 47 m (154 ft) · 21 km²
• Weslemkoon Lake depth mapDeepest contour 51.8 m (170 ft) · 20 km²
• Belmont Lake depth mapDeepest contour 16 m (52 ft) · 7.7 km²
• Kushog Lake depth mapDeepest contour 36.6 m (120 ft) · 6.6 km²

Not for navigation: contours give depth on the survey day.