National Water-Quality Assessment (NAWQA) Program
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Using Chemical, Hydrologic, and Age Dating Analysis to Delineate Redox Processes and Flow Paths in the Riparian Zone of a Glacial Outwash Aquifer-Stream System
By Larry J. Puckett, Timothy K. Cowdery, Peter B. McMahon, Lan H. Tornes, and Jeffrey D. Stoner
[Water Resources Research, vol. 38, no. 8, August 2002]Figure 7. Contour maps showing spatial distribution of (a) dissolved oxygen in August 1995 and (b) and (c) nitrate concentrations in the 40 m by 140 m study area in the riparian wetland in August 1994 and 1995, respectively. [Contour intervals are 15 umol L-1 for dissolved oxygen, 100 umol L-1 for nitrate in 1994, and 200 umol L-1 for nitrate in 1995.]
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