Frontenac County lake depth maps

Explore 79 lakes as 3D depth maps, built from Ontario MNRF bathymetric surveys — surveyed depth draped over real elevation and aerial imagery.

Featured depth maps

Largest in Frontenac CountyBobs Lake24.4 m (80 ft) deep · 7,360 acresExplore the 3D map →Deepest mapped contourMazinaw Lake134.1 m (440 ft) deep · 4,004 acresExplore the 3D map →Second largestBig Gull Lake24.4 m (80 ft) deep · 6,430 acresExplore the 3D map →

Where the lakes are

Dot size and shade follow max depth: under 15 ft 100 ft and deeper

Group of nearby lakes

All 79 mapped lakes in Frontenac County; deepest is Mazinaw Lake at 440 ft. Tap a numbered circle to zoom in, then a dot to open a lake.