Aerial survey in northeast Wisconsin

In January 2021, northeastern Wisconsinites may notice a low-flying helicopter towing a large, hoop-shaped sensor. The helicopter’s sensor uses airborne electromagnetic (AEM) technology to gather data that will help scientists update depth to bedrock maps. These maps are an important part of protecting the region’s groundwater quality.

Map showing the parts of northeast Wisconsin where the aerial survey is taking place.
Map of planned survey area. Credit: USGS

This geophysical survey project is led by the U.S. Geological Survey with the help of WGNHS, the Wisconsin Department of Natural Resources (DNR), and the Wisconsin Department of Agriculture, Trade, and Consumer Protection (DATCP).

AEM survey flights will take place in the following Wisconsin counties:

  • Brown
  • Calumet
  • Door
  • Fond du Lac
  • Kewaunee
  • Manitowoc
  • Sheboygan

More information

In the media