National Water-Quality Assessment (NAWQA) Program

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Water Quality in Carbonate Aquifers in the United States

The Report Summary of Findings Study Design
The Report:
Scientific Investigations Report 2008-5240

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While available, copies of this report can be obtained by contacting the Pennsylvania Water Science Center at (717) 730-6946 or by e-mail at jbricker@usgs.gov

Oxidation reduction state

Oxidation reduction (Redox) conditions are closely related to nitrate concentration. Oxic water had the highest nitrate concentrations and almost all of the sites that exceeded 10 mg/L were in oxic water. The illustration shown is based upon figure 21 of SIR 2008-5240.

figure 21

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Page Last Modified: Thursday, 25-Jun-2009 13:46:17 EDT