GUNNISON RIVER BASIN

09149500 UNCOMPAHGRE RIVER AT DELTA, CO-Continued

PERIOD OF RECORD.--October 1958 to September 1980, October 1987 to September 1988, October 1990 to September 1993, October 1994 to September 2003 (discontinued). For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09149500

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	pH, water, unfltrd field, std units (00400)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)	Hard- ness, water, unfltrd mg/L as CaCO3 (00900)	Calcium water, fltrd, mg/L (00915)	Magnes- ium, water, fltrd, mg/L (00925)	Potas- sium, water, fltrd, mg/L (00935)	Sodium adsorp- tion ratio (00931)	Sodium, water, fltrd, mg/L (00930)	Alka- linity, wat flt fxd end lab, mg/L as CaCO3 (29801)	Chlor- ide, water, fltrd, mg/L (00940)
OCT
16...	1110	289	8.3	1,450	9.0	670	182	51.4	3.54	2	98.3	E121	9.43
NOV
14...	1115	260	8.4	1,780	6.0	770	203	64.8	3.82	2	120	185	14.1
DEC
30...	1055	164	8.4	1,850	3.0	780	206	64.1	4.45	2	126	208	12.8
JAN
28...	1055	145	8.4	1,740	3.5	810	207	69.7	4.12	2	139	215	13.1
FEB
20...	1000	132	8.3	1,980	3.0	810	200	74.6	4.98	3	171	E198	47.6
MAR
13...	0950	124	8.4	1,740	7.5	780	191	72.5	3.85	2	152	201	16.1
MAY
02...	1135	91	8.2	1,440	--	650	181	48.5	4.50	1	83.0	200	10.3
29...	0950	739	7.9	1,070	14.7	460	128	35.4	5.77	1	73.9	161	10.8
JUN
20...	1150	185	8.2	1,500	17.1	670	192	46.9	4.77	1	86.1	215	10.8
JUL
17...	1145	100	8.3	1,750	21.2	770	215	57.6	3.99	2	118	216	12.2
AUG
12...	0950	129	8.2	1,700	18.9	810	229	58.0	3.60	2	116	181	11.5
SEP
08...	1020	363	8.0	1,530	15.7	700	197	49.7	4.63	2	99.5	226	10.7

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Fluor- ide, water, fltrd, mg/L (00950)	Silica, water, fltrd, mg/L (00955)	Sulfate water, fltrd, mg/L (00945)	Residue water, fltrd, sum of consti- tuents mg/L (70301)	Residue water, fltrd, tons/ acre-ft (70303)	Residue water, fltrd, tons/d (70302)	Selen- ium, water, fltrd, ug/L (01145)
OCT
16...	0.7	15.2	611	--	--	--	15
NOV
14...	0.7	15.7	755	1,290	1.75	905	14
DEC
30...	0.71	14.7	772	1,330	1.80	587	13
JAN
28...	0.65	13.3	760	1,340	1.82	523	15
FEB
20...	0.64	14.2	849	--	--	--	19
MAR
13...	0.59	11.0	756	1,320	1.80	443	15
MAY
02...	0.66	13.8	591	1,050	1.43	259	10
29...	0.5	15.4	473	839	1.14	1,670	9
JUN
20...	0.8	16.8	625	1,110	1.51	555	7
JUL
17...	0.9	18.0	752	1,310	1.78	353	7
AUG
12...	0.9	16.4	707	1,250	1.70	436	9
SEP
08...	0.8	17.6	628	1,140	1.56	1,120	10
E -- Estimated laboratory analysis value.

MISCELLANEOUS FIELD MEASUREMENTS, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)		Date	Time	Instan- taneous dis- charge, cfs (00061)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)
OCT						JUN
02...	1055	282	1,660	12.0		03...	1120	738	940	13.3
NOV						25...	1110	123	1,520	15.7
12...	1140	263	1,790	5.2		AUG
JAN						13...	0910	119	1,710	17.9
08...	1115	157	1,800	--
APR
04...	1040	44	1,520	7.2