Lake Wisconsin Depth Map
Lake Wisconsin is not a natural lake. It is a wide impoundment of the Wisconsin River held back by the Prairie du Sac Dam, spreading across the line between Columbia and Sauk counties, with the Merrimac Ferry still crossing it. That river channel history shows up in the bottom contours, and this depth map from Mapping Specialists renders those depths as a shaded 3D surface rather than flat contour lines, so drop-offs and old river bends read at a glance.
- A visual 3D representation of the lake bottom, showing depth changes in relief
- Boat launch locations around the shoreline
- Rock areas and submerged vegetation, the structure anglers actually fish
- Land area rendered in high resolution aerial imagery, so shoreline development, roads, and fields stay recognizable
Map Shop finishes it as paper, laminated for wet-erase notes, mounted to foam core for pins, or framed in black or walnut molding for a lake house wall, marina office, or guide service counter.

