Hydrologic conditions in the Lakeland Ridge area of Polk County, Florida

The Lakeland ridge area of this investigation covers about 300 square miles in northwest Polk County in central Florida. The growth of industry, phosphate mining, and citrus production as well as population growth during the last two decades has resulted in an increase in ground-water pumpage from about 11 billion gallons in 1950 to 27 billion gallons in 1970.