Scientific Investigations Report 2012–5220
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First posted December 20, 2012 For additional information contact: Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. |
McMahon, P.B., 2012, Use of classes based on redox and groundwater age to characterize the susceptibility of principal aquifers to changes in nitrate concentrations, 1991 to 2010: U.S. Geological Survey Scientific Investigations Report 2012–5220, 41 p.
Foreword
Abstract
Introduction
Methods
Evaluation of Redox-Age Classes
Relation Between Redox-Age Classes and Changes in Nitrate Concentrations in Trend-Well Networks.
Redox-Age Classes in Principal Aquifers
Summary and Conclusions
Acknowledgments
References Cited
Appendix 1