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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 2.  Concentrations of selected constituents in the Otter Tail River between February 8, 1993 and August 2, 1995. [All concentrations are mmol L-1 with the exception of pH which is in standard units; DKN and TKN are reported as mmol L-1 N, dissolved organic carbon (DOC) is reported as mmol L-1 C, sample depths are in meters. DKN=Dissolved Kjeldahl Nitrogen, TKN=Total Kjeldahl Nitrogen. Values reported as “0” were less than the detection limit.]

 

Constituent

Median

Range

pH

7.9

7.3-8.4

O2

246.9

68.8-393.8

HCO3-

3696

3229-4802

Ca2+

1048

923-1322

Mg2+

863.7

740.3-1111

Na+

200.1

156.6-282.8

K+

56.3

30.7-76.7

SiO2

233.0

124.8-316.2

Fe2+

1.68

0.32-3.2

Mn2+

0.96

0.29-2.4

Cl-

90.3

62.1-141.1

SO42-

27.1

10.4-44.8

PO43-

0.2

0-1.0

DP

0.2

0-1.0

TP

1.0

0.20-1.9

NO3-

5.0

0-46.4

NH4+

2.1

0.5-15.0

DKN

35.7

28.6-57.1

TKN

46.4

28.6-64.3

DOC

675.0

566.7-1000


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