Keywords: Floridan block diagram.png en Idealized geologic diagram showing the confining layer that separates the Upper Floridan and surficial aquifers and plays an important role in determining water quality in the Upper Floridan aquifer 2015-01-21 Berndt M P Katz B G Kingsbury J A and Crandall C A 2015 The quality of our Nation ™s waters water quality in the Upper Floridan aquifer and overlying surficial aquifers southeastern United States 1993-2010 U S Geological Survey Circular 1355 84 p http //pubs er usgs gov/publication/cir1355 Berndt M P Katz B G Kingsbury J A and Crandall C A other versions PD-USGov Uncategorized 2016 September 19 |