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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]Table 1. Changes in discharge and chemistry at 2-3 points on the 8.3 km study reach of the Otter Tail River. [Site 1 is the furthest upstream site and Site 3 is the gage site shown in Figure 1. Discharge units are m3 s-1 and NO3- and Cl- are mmol L-1. Values reported as “0” were less than the detection limit.]
|
Date |
Site 1 |
Site 2 |
Net Change |
Site 3 |
Net change |
Total change |
|
February 1994 Discharge |
2.1 |
--- |
--- |
2.5 |
0.4 |
0.4 |
|
June 1994 Discharge |
5.0 |
5.0 |
0 |
5.0 |
0 |
0 |
|
August 1994 Discharge NO3- Cl- |
2.6 0 81.7 |
2.8 0 90.1 |
0.2 0 8.4 |
3.0 5.1 95.8 |
0.2 5.1 5.7 |
0.4 5.1 14.1 |
|
August 1995 Discharge NO3- Cl- |
2.1 10 87.3 |
2.1 9.3 90.1 |
0 -0.7 2.8 |
1.9 12.1 98.6 |
-0.2 2.8 8.5 |
-0.2 2.1 11.3 |
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U.S. Department of the Interior |
U.S. Geological Survey
URL: http://water.usgs.gov/nawqa/nutrients/pubs/wrr_v38/table1.html
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