This table gives median annual concentrations of clopyralid, dicamba, MCPA, MCPP, 2,4-D and metolachlor (column headings) for the years 2006 to 2011 (row headings).

Pesticide Concentrations Red River 2006-2011

Year	Clopyralid Median Concentrations (ng/L)	Dicampa  Median Concentrations (ng/L)	MCPA Median Concentrations (ng/L)	MCPP  Median Concentrations (ng/L)	Metolachlor  Median Concentrations (ng/L)	2,4-D Median Concentrations (ng/L)
2006	30.05	0.73	0.58	0.5	23.7	37.85
2007	34.35	0.73	0.58	3.23	23.7	79.25
2008	18.4	2.19	2.825	2.045	23.7	41.25
2009	14.065	0.89	3.175	2.06	3.85	31.35
2010	9.875	4.11	2.665	1.375	2.63	25.05
2011	18.575	3.185	2.78	1.685	1.73	18.2

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