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Central Sands Lakes Study

Under 2017 Wisconsin Act 10, the DNR is evaluating and modeling the potential impacts of groundwater withdrawals on three lakes in Waushara County – Long Lake and Plainfield Lake near Plainfield, and Pleasant Lake near Coloma. The Central Sands region is a contiguous area east of the Wisconsin River with sand and gravel deposits greater than 50 feet deep which spans several counties and includes more than 800 miles of trout streams and 300 lakes. Water withdrawn from this aquifer, primarily through high capacity wells, provides water for local municipalities, private water supply, industries and agriculture.

The DNR began the study in 2018. Click on the icons below to learn about the components of the study.

In October 2020 the DNR released series of presentations in collaboration with our study partners, the Wisconsin Geological and Natural History Survey (WGNHS) and United States Geological Survey (USGS) on methodology used for the study.

View the presentations:

The DNR received and has responded to several questions and comments during the 30–day public comment period for the Central Sands Lakes Study presentations on methodology.

Public Participation Timeline

Fall 2020
  • Presentations
  • Comment Period
We are here
Winter 2020-2021
  • Public Release of Decision Report
  • Public Presentations, Hearing
  • Comment Period
Spring 2021
  • Final Report
  • Recommendations to Legislature


  • Subscribe to receive email updates about the Central Sands Lakes Study.

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