[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	483029114204200																								
Site Name	BIG MOUNTAIN, MT																								
Latitude (dd)	48.50805556																								
Longitude (dd)	-114.345																								
Elevation (ft)	6426																								
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 (%)
483029114204200	BIG MOUNTAIN, MT	1993-04-02	1993	OB	-13	5	5.1	7.9	<3.1	<1.7	<3	<0.5	3.2	<1.1	5.4	5.3	0.3					5.3	89	208	1.8
483029114204200	BIG MOUNTAIN, MT	1994-03-22	1994	OB	-11	5	5	10	<3.1	<1.7	<3	<0.5	3.9	<1.1	4.8	6.2	0.6					5		229	11.6
483029114204200	BIG MOUNTAIN, MT	1995-03-16	1995	OB	-4	3	5.2	6.3	<3.1	<1.7	<3	0.5	3.3	<1.1	3.7	4.4	0.7					5.2		267	11
483029114204200	BIG MOUNTAIN, MT	1996-03-15	1996	OB	-3	2	5.2	6.3	<3.1	<1.7	<0.9	0.5	2.2	<1.1	2.9	3.1	0.6					6		287	20
483029114204200	BIG MOUNTAIN, MT	1997-03-16	1997	OB	-10	4	5	10	<3.1	<1.7		<0.5	2	<1.1	3.7	4.6						6.7		366	18.2
483029114204200	BIG MOUNTAIN, MT	1998-03-13	1998	OB	-8	3	5.1	7.9	<3.1	<1.7		<0.5	3	1.1	3.5	5	0.5					7.5		231	6.3
483029114204200	BIG MOUNTAIN, MT	1999-03-12	1999	OB	-7.4	4	5.2	6.3	<3.1	<1.7	<0.9	<0.5	4	<1.1	3.3	4.1	0.3					5.7		366	16.4
483029114204200	BIG MOUNTAIN, MT	2000-03-10	2000	OB	-4.4	3	5.2	6.3	<3.1	<1.7	<0.9	<0.5	2.4	<1.1	3.1	4.4	0.5					6.8		267	7.4
483029114204200	BIG MOUNTAIN, MT	2001-03-09	2001	OB	-9.4	5	5	10	<3.1	<1.7	1.3	<0.5	4.3	<1.1	6	8.6	0.5			1.2		5.6		132	3.3
483029114204200	BIG MOUNTAIN, MT	2002-03-10	2002	OB	-7.6	4	5.3	5	<3.1	<1.7	5.2	<0.5	4.9	<1.1	2.7	5	0.4			1.1		5.9	99	297	32.5
483029114204200	BIG MOUNTAIN, MT	2003-03-07	2003	OB	-5.8	3	5.2	6.3	<3.1	<1.7	1.3	<0.5	4	<1.1	2.7	4.3	0.4			1.3			68	259	24.7
483029114204200	BIG MOUNTAIN, MT	2004-03-05	2004	OB	-13.6	5	5.1	7.9	<3.1	<1.7	<0.9	1.3	3.3	1.4	3.5	5	0.6			1.7		5.6	74	251	11.6
483029114204200	BIG MOUNTAIN, MT	2005-03-05	2005	OB	-10.8	5	5.1	7.9	<3.1	<1.7	<0.9	<0.5	3	1.1	3.5	5.7	0.2			1.6		4.2	53	160	2.8
483029114204200	BIG MOUNTAIN, MT	2006-03-03	2006	OB	-4.4	3.7	5.3	5	<0.5	<0.2	<0.9	<0.5	2.8	1.4	2.3	3.6	0.21					4.1	98	305	3.3
483029114204200	BIG MOUNTAIN, MT	2007-03-02	2007	OB	-5.8	4	5.2	6.3	1.5	0.8	1.3	<0.5	2.2	1.4	3.1	4.3	0.29					5.4	70	259	15.8
483029114204200	BIG MOUNTAIN, MT	2008-02-29	2008	OB	-4.6	5.2	5.1	7.9	4	<0.2	<0.9	<0.5	2.2	0.6	2.5	4.3	0.25						97	297	31.2
483029114204200	BIG MOUNTAIN, MT	2009-02-27	2009	OB	-6.8	3	5.3	5	<0.5	<0.2	<0.9	<0.5	2.4	<0.6	2.3	2.9	0.22				2.22		67	239	17.5
483029114204200	BIG MOUNTAIN, MT	2010-03-05	2010	OB	-5.2	3.4	5.3	5	1.5	0.8	1.3	0.5	4	0.8	2.9	4.3	0.48				6.08		65	196	24.2
483029114204200	BIG MOUNTAIN, MT	2011-03-04	2011	OB	-6.2	3.2	5.2	6.3	1	M	<0.9	<0.5	2.4	<0.6	2.5	3.6	0.24				0.83		106	315	22.8
483029114204200	BIG MOUNTAIN, MT	2012-03-03	2012	OB	-10	3	4.7	20	2	<1.6	1.3	<0.5	4.7	1.1	2.9	3.9	0.2	0.13			1.99		70	264	56
483029114204200	BIG MOUNTAIN, MT	2013-03-01	2013	OB	-8	3	5	10	3.5	<1.6	<0.9	<0.5	3.5	0.8	2.7	4.3	0.2	0.1			1.32		82	254	37.1
483029114204200	BIG MOUNTAIN, MT	2014-02-28	2014	OB	1.8	3	5.5	3.2	1.5	<0.8	0.9	<0.3	2.6	0.6	2.3	3.7	0.3	0.09	0.11				73	254	20.5
483029114204200	BIG MOUNTAIN, MT	2015-03-06	2015	OB	-5.2	2.3	5.4	4	1	M	0.4	0.3	2.2	<0.6	1.5	2.9	<0.2	<0.05			1.92		135	196	28.5
483029114204200	BIG MOUNTAIN, MT	2016-03-03	2016	OB	-3.2	2.3	5.3	5	0.5	<0.2	0.9	0.5	2.4	<0.6	1.5	2.9	0.31	0.09			1.34		85	269	35.8