Transport and Fate of Nitrogen in a Glacial Outwash Aquifer-Stream System: Upland Processes

Transport and Fate of Nitrate in a Glacial Outwash Aquifer in Relation to Ground-Water Age, Land Use Practices and Redox Processes

Table 4. Median concentrations of major-ions in samples collected during 1994, 1995, and 1997. [All concentrations are mmol L^-1 with the exception of pH which is in standard units; organic nitrogen (Org-N) is reported as NH₄⁺.]

Site	T °C	pH	O₂	HCO₃^-	Ca²⁺	Mg²⁺	Na⁺	K⁺	Fe²⁺	Mn²⁺	Cl^-	SO₄^2-	PO₄^3-	NO₃^-	NH₄⁺	Org-N	DOC
OF1S	11.8	7.16	9.4	5343	2495	1172	100.1	35.8	0.1	0.4	479.6	249.8	0.6	928.3	0.7	6.4	149.9
OF 1A	8.8	7.43	43.8	4796	2196	946.0	87.0	38.4	0.0	0.0	423.2	333.1	0.6	628.4	0.6	6.5	91.6
OF1B	9.0	7.36	17.2	4605	2221	946.0	82.7	40.9	0.0	1.5	371.0	327.9	0.6	609.9	1.0	6.0	108.2
OF1C	10.2	7.22	2.3	5446	1946	863.7	139.2	40.9	50.7	11.3	162.2	84.3	1.3	1.8	20.5	4.2	199.8
OF1D	9.4	7.55	3.1	6058	1971	863.7	200.1	42.2	79.7	3.7	45.1	10.4	5.1	1.8	45.7	7.9	262.3
OF2S	10.2	7.43	112.5	4736	2021	863.7	82.7	30.7	1.1	0.0	338.5	291.5	0.2	292.8	0.7	6.4	91.6
OF2D	10.4	7.55	0.2	6316	2033	843.2	71.8	33.2	44.8	3.8	141.1	197.8	0.6	3.6	9.3	12.1	183.2
OF3S	10.5	7.05	140.6	2016	1372	575.8	89.2	43.5	0.3	0.0	203.1	177.0	3.2	1285	1.4	5.7	116.6
OF3M	9.4	7.24	1.6	5849	2495	1111	78.3	40.9	73.4	6.7	592.4	374.8	0.3	1.8	12.2	5.3	233.1
OF3D	9.2	7.36	2.3	5960	2246	987.1	82.7	40.9	64.5	4.7	366.7	177.0	0.2	1.8	24.7	7.4	258.1
OF4S	9.5	7.37	5.5	4848	2869	1357	506.8	89.5	0.2	0.5	1664	983.7	1.4	340.1	1.0	13.3	166.5
OF5S	8.9	7.23	192.2	5892	2071	1064	169.7	168.8	0.7	0.0	204.5	89.5	0.2	167.8	1.0	15.4	233.1

Nutrients National Synthesis Project