Minnesota Lake Depths
Minnesota · Polk County

Polk County lake depth maps

Explore 11 lakes as 3D depth maps, built from Minnesota DNR bathymetric surveys — surveyed depth draped over real elevation and aerial imagery.

Featured depth maps

3D depth map of Maple LakeLargest in the county, most fish species surveyedMaple Lake11 fish species · 10 ft deep · 1,574 acresExplore the 3D map 3D depth map of Union LakeDeepest mapped contourUnion Lake80 ft deep · 798 acresExplore the 3D map 3D depth map of Turtle LakeThird largestTurtle Lake10 ft deep · 525 acresExplore the 3D map

Where the lakes are

Maple Lake · 10 ft · 1,574 acUnion Lake · 80 ft · 798 acTurtle Lake · 10 ft · 525 acLake Sarah · 20 ft · 304 acBadger Lake · 15 ft · 255 acWhitefish Lake · 15 ft · 243 acCameron Lake · 7 ft · 225 acCross Lake (Main Basin) · 15 ft · 166 acHill River Lake · 50 ft · 98 acCross Lake (North East Bay) · 10 ft · 84 acStore Lake · 15 ft · 50 acMaple LakeUnion Lake

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

All 11 mapped lakes in Polk County; deepest is Union Lake at 80 ft. Tap a dot to open that lake.