Trends in ground-water levels in Wisconsin, 1967-1971

This report supplements the Wisconsin Geological and Natural History Survey, Information Circular No.9, "Trends in Ground-Water Levels in Wisconsin through 1966". It describes, by hydrographs, the ground-water level trends in Wisconsin for the period 1967-1971. All current observation wells with more than three years of record are included; records of observation wells discontinued since 1967 and records of wells with less than three years of record are not included. Explanatory and interpretive material is in Circular 9.