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Look up
data about the quality of groundwater near homes or businesses or get an estimate of groundwater availability.
Protect
the quality and quantity of groundwater for your family, business customers and community.
Learn
where your groundwater comes from and how it moves underground to reach your drinking water well and the lakes and streams you enjoy.

GCC Report to the Legislature Groundwater Quantity

Groundwater withdrawals for drinking water, irrigation and other uses are the main way Wisconsin residents affect groundwater quantity in the state. All high capacity wells capable of withdrawing 100,000 gallons per day are required to report withdrawals to the DNR. Low capacity private wells are mostly residential and farm wells that use an estimated 50-75 billion gallons per year statewide.

Since the records from high capacity wells represent most groundwater withdrawals in the state, groundwater withdrawals by high capacity wells can be considered a proxy for the state of groundwater quantity.

Groundwater withdrawals are most concentrated in urban areas not supplied by surface water (e.g., Dane, Rock and Waukesha counties) and in agricultural areas with high irrigation demand (e.g., Portage, Waushara and Adams counties). Irrigation demand is strongly dependent on precipitation and temperatures and can vary substantially from year to year. Groundwater withdrawals are smallest in the far north where land use is more forest based, populations are lower and agriculture is less prevalent. Statewide, approximately 200 billion gallons of groundwater was withdrawn in 2016. For more information, see the latest water withdrawals summary.


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Last revised: Wednesday August 30 2017