[dd, decimal degrees; ft, feet above the North American Vertical Datum of 1988; OB, bulk deposition from E or VWM; E, depth-integrated depth-integrated environmental;																									
VWM, volume-weighted mean of two snowpack layers; ANC, acid neutralization capacity; ueq/L, microequivalents per liter;																									
uS/cm, microsiemens per centimeter; SC, specific conductance at 25degC; pH values in standard units; H, hydrogen; Ca, calcium;																									
Mg, magnesium; Na, sodium; K, potassium;  NH4, ammonium; Cl, chloride; SO4, sulfate; NO3, nitrate; DOC, dissolved organic carbon;																									
mg/L, milligrams per liter; SWE, snow-water equivalent;  cm, centimeters; d34S, stable-sulfur isotope ratio (34S/32S); Hg, mercury;																									
ng/L, nanograms per liter; NA or empty cell indicates not analyzed; <, below reporting limits; M, presence verified but not quantified; %, percent																									
missing year indicates no sample collected or sample results reviewed and rejected																									
Roth 1994: Mercury in water by CVAFD with potassium dichromate preservation																									
USEPA Method 1631, Rev E: Mercury in water by Oxidation, Purge and Trap, and CVAFS]																									
																									
Station ID	390158107583901																								
Site Name	GRAND MESA, CO																								
Latitude (dd)	39.032758																								
Longitude (dd)	-107.9781235																								
Elevation (ft)																									
SiteNumber	StationName	SampleDate	WaterYear	SampleType	ANC (ueq/L)	SC (uS/cm)	pH	H (ueq/L)	Ca (ueq/L)	Mg (ueq/L)	Na (ueq/L)	K (ueq/L)	NH4 (ueq/L)	Cl (ueq/L)	SO4 (ueq/L)	NO3 (ueq/L)	DOC (mg/L)	Total N (mg/L)	Total Dissolved N (mg/L)	Hg (ng/L) Roth 1994	Hg (ng/L) USEPA 1631	d34S (per mil)	SWE (cm)	Snow Depth (cm)	Ionic Balance (%)
390158107583901	GRAND MESA, CO	1993-03-21	1993	OB	-17	5	5	10	<3.1	<1.7	<3	0.5	3.5	<1.1	9.6	5.8	0.4					4.6	84	251	-4.8
390158107583901	GRAND MESA, CO	1994-04-20	1994	OB	0	6	5.5	3.2	16.4	4	3.9	6.7	8.9	2.3	12.7	12.4	2.5					4.7		117	22.3
390158107583901	GRAND MESA, CO	1995-03-29	1995	OB	-4	4	5.2	6.3	9.5	<1.7	<3	0.5	4.7	<1.1	7.5	10.4	0.9					5		249	8
390158107583901	GRAND MESA, CO	1996-03-29	1996	OB	0	3	5.6	2.5	9.8	<1.7	0.9	0.8	3.7	<1.1	6.5	7.6	0.7					5.4		165	11.3
390158107583901	GRAND MESA, CO	1997-03-29	1997	OB	-10	5	5.1	7.9	7.6	<1.7		0.5	3	1.1	8.7	8.6	1.3					4.4		206	1.6
390158107583901	GRAND MESA, CO	1998-03-30	1998	OB	-9	5	5.1	7.9	8	<1.7		0.5	5	1.1	10.2	9.2	0.7					3.5		196	2.1
390158107583901	GRAND MESA, CO	1999-04-06	1999	OB	28.4	8	6.5	0.3	44.3	4	3.5	2.3	7.8	2	12.3	11.5	1.3							168	55.7
390158107583901	GRAND MESA, CO	2000-03-22	2000	OB	-1.6	5	5.2	6.3	11	2.5	1.7	1.3	6.7	1.1	8.7	10.5	0.8							160	18.5
390158107583901	GRAND MESA, CO	2001-03-10	2001	OB	-4.8	5	5.4	4	12.9	2.5	2.2	1.3	7.4	<1.1	9.8	15	0.7			5.1				127	10
390158107583901	GRAND MESA, CO	2002-03-22	2002	OB	25.6	7	6.4	0.4	34.4	5.7	2.2	3.8	3.7	2	7.5	15.7	1.6			9.4				119	50.1
390158107583901	GRAND MESA, CO	2003-03-24	2003	OB	1.6	5	5.6	2.5	19.9	6.5	3	5.4	8.1	1.7	7.5	13.6	2.2			5.2			40	142	34.7
390158107583901	GRAND MESA, CO	2004-03-28	2004	OB	2.6	8	5.6	2.5	27	4.9	1.3	7.7	6.4	2.5	10.8	14.3	2.2			5.3			37	102	31
390158107583901	GRAND MESA, CO	2005-03-21	2005	OB	-0.4	4	5.5	3.2	6.5	<1.7	<0.9	1.3	5	<1.1	5.2	6.4	0.5			4.9			72	221	15.9
390158107583901	GRAND MESA, CO	2006-03-28	2006	OB	5.4	5.2	5.9	1.3	18	3.3	2.2	1.3	6.3	1.7	7.7	11.4	0.75						40	137	29
390158107583901	GRAND MESA, CO	2007-03-26	2007	OB	17.8	6.3	6	1	23	5.8	3	7.2	2.6	2.5	11.7	13.6	1.87						33	112	37
390158107583901	GRAND MESA, CO	2008-04-02	2008	OB	6.4	5	5.8	1.6	19.5	3.3	4.3	1	3.5	2.3	7.1	8.6	0.58						66	198	37.5
390158107583901	GRAND MESA, CO	2009-03-16	2009	OB	31.8	6.5	6.6	0.3	35.9	4.9	2.6	1.8	5.5	1.7	7.1	8.6	0.78				8.57		46	142	65.3
390158107583901	GRAND MESA, CO	2010-03-23	2010	OB	-3.4	5.2	5.3	5	9	1.6	0.9	1	5.5	0.8	5	8.6	0.5				3.91		42	145	23
390158107583901	GRAND MESA, CO	2011-03-22	2011	OB	24.6	5.4	6.2	0.6	27.9	4.9	2.2	3.6	6.8	1.1	6.2	7.9	1.54				12		54	170	64.6
390158107583901	GRAND MESA, CO	2012-03-20	2012	OB	20	6	5.3	5	28.9	5.8	3	4.1	3	2.5	8.7	8.6	1.4	0.32			9.09		34	130	55.8
390158107583901	GRAND MESA, CO	2013-03-19	2013	OB	-2	3	5.2	6.3	21	4.1	1.3	1.8	6.4	1.1	5	8.6	0.6	0.25			6.41		33	114	47.1
390158107583901	GRAND MESA, CO	2014-03-25	2014	OB	7.8	4	6.1	0.8	22	5.8	3	3.8	3.4	2	6.9	9.2	1.5	0.19	0.24				36	132	44
390158107583901	GRAND MESA, CO	2015-03-26	2015	OB	0.6	3.7	5.7	2	9	2.5	2.2	1.5	5.3	1.7	4.4	7.1	0.83	0.18			5.1		36	119	27.3
390158107583901	GRAND MESA, CO	2016-03-24	2016	OB	24	6	6.5	0.3	27.4	4.1	3	2.8	3.7	1.4	6.2	6.4	0.62	0.39			18.8		43	145	64.7