GCC Report to the Legislature Groundwater quantity
Groundwater is available in sufficient amounts throughout most of Wisconsin to provide adequate water supplies for most municipal, industrial, agricultural and domestic uses. What is frequently missed is that groundwater pumping always lowers water levels in aquifers and connected lakes, wetlands and streams; and always diverts flow to surface waters where groundwater would have discharged naturally. The amount of water level lowering and flow diversion is a matter of degree. At certain amounts of pumping in an area, aquifers can be perilously lowered, and streams, lakes and wetlands can dry.
Issues and problems
- Water Use
- Surface Water Impacts
- Regional Drawdowns
- Impact of Reduced Quantity on Groundwater Quality
- Land Use and High Groundwater Conflicts
Potential management solutions
DNR has developed an interactive web map viewer for water use throughout Wisconsin. The map viewer allows the public to access information about approved surface and ground water withdrawals, existing and pending high capacity wells and locations of groundwater protection features. The water use map viewer supports the mission of the Great Lakes compact, provides efficiency to DNR's release of water use information and provides consistently requested information to our customers in an easy to use format.