[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	374500107420000																								
Site Name	MOLAS LAKE, CO																								
Latitude (dd)	37.74944444																								
Longitude (dd)	-107.6955556																								
Elevation (ft)	10806																								
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 (%)
374500107420000	MOLAS LAKE, CO	1993-03-31	1993	OB	-13	4	5.1	7.9	<3.1	<1.7	<3	<0.5	1.4	<1.1	6.2	5	0.2					2.8	56	163	-9.3
374500107420000	MOLAS LAKE, CO	1994-04-01	1994	OB	4	5	5.7	2	10.5	<1.7	<3	9.7	3.9	3.4	6.2	8.1	2.8					4.1		170	25.9
374500107420000	MOLAS LAKE, CO	1995-04-01	1995	OB	-4	3	5.3	5	8	<1.7	<3	<0.5	3	<1.1	5.4	8.9	0.6					4.6		213	5.6
374500107420000	MOLAS LAKE, CO	1996-03-29	1996	OB	19	4	6.4	0.4	23.9	2.5	1.7	1.3	3.4	<1.1	5.4	7.2	0.6					3.8		163	61.1
374500107420000	MOLAS LAKE, CO	1997-04-12	1997	OB	-4	4	5.5	3.2	12.3	<1.7		0.5	2.2	<1.1	5.6	9.3	0.9					4.6		193	10
374500107420000	MOLAS LAKE, CO	1998-03-19	1998	OB	-7	4	5.2	6.3	9	<1.7		<0.5	2.4	1.1	6.2	9.1	0.3					4.2		140	3.8
374500107420000	MOLAS LAKE, CO	1999-03-18	1999	OB	20	6	6.4	0.4	34.4	2.5	3.5	0.8	4.2	2.3	8.1	9.9	0.3					3.2		119	52.8
374500107420000	MOLAS LAKE, CO	2000-03-26	2000	OB	-3.8	4	5.2	6.3	7.5	<1.7	1.3	0.5	2.9	<1.1	4	8.1	0.6					5.1		137	20.9
374500107420000	MOLAS LAKE, CO	2001-03-28	2001	OB	-4	4	5.3	5	8	<1.7	1.3	0.5	2.7	<1.1	5.4	10.7	0.5					4.9		165	4.2
374500107420000	MOLAS LAKE, CO	2002-03-27	2002	OB	15.8	5	6.3	0.5	25.4	2.5	3.9	1.3	2.6	3.7	4.4	10.7	0.4			3.6		4.7	25	89	46.9
374500107420000	MOLAS LAKE, CO	2003-03-29	2003	OB	9.6	6	5.8	1.6	20.4	4	10	6.4	4	10.2	5.6	10.7	1.3			3.1		6	29	89	35.8
374500107420000	MOLAS LAKE, CO	2004-03-27	2004	OB	-2.8	5	5.5	3.2	9.3	<1.7	3.9	1.5	3.5	4.5	5	9.3	1.1			1.1		3.5	37	99	6.5
374500107420000	MOLAS LAKE, CO	2005-03-22	2005	OB	1.2	5	5.2	6.3	3.5	<1.7	1.3	0.5	2.5	<1.1	3.3	6.4	<0.2			1.1		4	67	198	22.4
374500107420000	MOLAS LAKE, CO	2006-03-29	2006	OB	19	5.9	6	1	26.4	3.3	2.6	0.8	4.7	2.8	5	12.9	0.81					3.9	50	178	47.3
374500107420000	MOLAS LAKE, CO	2007-03-27	2007	OB	28.6	7.2	6.5	0.3	40.9	3.3	2.6	1	3.9	2.3	7.1	12.1	0.41					3	42	127	57.9
374500107420000	MOLAS LAKE, CO	2008-03-30	2008	OB	2.2	4.2	5.7	2	4	<0.2	<0.9	<0.5	1.4	0.6	2.1	5	<0.2						64	208	11
374500107420000	MOLAS LAKE, CO	2009-03-17	2009	OB	22	4.9	6.5	0.3	27.9	3.3	1.3	0.8	3.5	0.8	4.4	7.1	0.39	0.16			2.89		58	160	65.5
374500107420000	MOLAS LAKE, CO	2010-03-24	2010	OB	-5.8	3.7	5.3	5	4.5	0.8	1.3	0.5	3.2	1.1	2.1	6.4	0.34				1.19		45	147	22.9
374500107420000	MOLAS LAKE, CO	2011-03-22	2011	OB	2.2	3.9	5.7	2	14	1.6	2.2	1	2.8	1.1	4.2	7.9	0.49				3.24		54	152	32.3
374500107420000	MOLAS LAKE, CO	2012-03-22	2012	OB	-2	5	5.6	2.5	23	3.3	2.2	1	5.4	1.7	4.6	8.5	0.5	0.2			4.94		46	142	43.3
374500107420000	MOLAS LAKE, CO	2013-03-20	2013	OB	16	4	5.9	1.3	25.9	3.3	1.3	0.5	3.5	1.4	3.5	7.1	0.5	0.15			3.8		38	132	62.4
374500107420000	MOLAS LAKE, CO	2014-03-24	2014	OB	12.2	4	6.3	0.5	18.5	2.5	1.7	0.8	4.8	1.4	4	7.5	0.41	0.17	0.19				55	173	52.1
374500107420000	MOLAS LAKE, CO	2015-03-25	2015	OB	-4.2	2.5	5.6	2.5	5	0.8	1.7	0.8	3.2	1.4	2.3	5	0.28	0.09			1.61		39	112	23.3
374500107420000	MOLAS LAKE, CO	2016-03-23	2016	OB	30.4	5.1	6.6	0.3	30.9	2.5	3	0.5	2.9	2.3	2.9	5.7	<0.2	0.13			1.27		36	117	73.2