Water-table map of Milwaukee County, Wisconsin

A map (scale 1:100,000) of the water table in Milwaukee County in southeastern Wisconsin was prepared using water levels from more than 135 wells. The work was done as a cooperative project between the U.S. Geological Survey and the Southeastern Wisconsin Regional Planning Commission. The map shows the altitude of the water table in increments of 20 feet. The altitude ranges from less than 540 feet in a cone of depression in the city of Milwaukee to more than 800 feet in an area along the western border of the county. (Woodard-USGS)