GUNNISON RIVER BASIN

09146020 UNCOMPAHGRE RIVER NEAR OURAY, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--April 2001 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09146020

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

Date	Time	Instan- taneous dis- charge, cfs (00061)	Dis- solved oxygen, mg/L (00300)	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)
NOV
13...	1315	36	9.0	7.3	648	7.0	300	111	4.61	1.34	0.3	13.3	E35
APR
23...	1430	67	9.3	7.5	432	5.3	200	72.9	3.63	1.09	0.3	8.17	43
MAY
28...	1415	917	8.7	7.9	143	9.8	59	21.4	1.47	0.60	0.1	1.73	27
AUG
11...	1120	40	7.3	7.9	551	16.7	250	93.1	3.89	1.22	0.3	12.0	41

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

Date	Chlor- ide, water, fltrd, mg/L (00940)	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)	Ammonia + org-N, water, fltrd, mg/L as N (00623)	Ammonia + org-N, water, unfltrd mg/L as N (00625)	Ammonia water, fltrd, mg/L as N (00608)	Nitrite + nitrate water fltrd, mg/L as N (00631)	Nitrite water, fltrd, mg/L as N (00613)	Ortho- phos- phate, water, fltrd, mg/L as P (00671)
NOV
13...	5.32	0.6	11.0	269	--	--	--	<0.10	E.05	E.011	0.133	<0.002	<0.007
APR
23...	4.41	0.44	9.0	158	285	0.39	51.6	<0.10	E.09	0.017	0.183	<0.002	<0.007
MAY
28...	0.54	<0.2	5.3	38.4	87	0.12	215	E.07	0.33	<0.015	0.205	<0.002	<0.007
AUG
11...	3.57	0.6	10.1	219	369	0.50	39.8	<0.10	<0.10	0.020	0.150	<0.002	<0.007

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

Date	Phos- phorus, water, fltrd, mg/L (00666)	Phos- phorus, water, unfltrd mg/L (00665)	E coli, m-TEC MF, water, col/ 100 mL (31633)	Fecal coli- form, M-FC 0.7u MF col/ 100 mL (31625)	Cadmium water, fltrd, ug/L (01025)	Copper, water, fltrd, ug/L (01040)	Iron, water, unfltrd recover -able, ug/L (01045)	Lead, water, fltrd, ug/L (01049)	Mangan- ese, water, fltrd, ug/L (01056)	Mangan- ese, water, unfltrd recover -able, ug/L (01055)	Mercury water, fltrd, ug/L (71890)	Selen- ium, water, fltrd, ug/L (01145)	Silver, water, fltrd, ug/L (01075)
NOV
13...	<0.004	0.021	<1	<1	0.8	4.6	1,590	<1	389	404	<0.02	<3	<0.3
APR
23...	<0.004	0.085	<1	E2	1.1	4.9	2,550	<1	396	442	<0.02	<3	<0.3
MAY
28...	<0.004	2.95	E3	E8	E.2	4.5	16,700	<1	99.3	1,820	<0.02	<3	<0.3
AUG
11...	<0.004	0.085	<1	<1	0.7	E4.3	2,050	<1	249	279	<0.02	<3	<0.3

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

Date	Zinc, water, fltrd, ug/L (01090)
NOV
13...	145
APR
23...	179
MAY
28...	14
AUG
11...	42
< -- Actual value is known to be less than the value shown. 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
01...	1510	61	502	9.6		24...	1540	197	236	11.6
JAN						AUG
07...	1230	20	828	8.3		12...	1500	47	557	17.7
APR
03...	1240	40	580	7.5