SAN JUAN RIVER BASIN

09359020 ANIMAS RIVER BELOW SILVERTON, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--October 1993 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09359020

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 inc tit field, mg/L as CaCO3 (39086)
DEC
05...	1345	88	10.3	6.3	499	0.7	250	90.7	5.48	0.86	0.1	3.40	5
MAY
02...	1245	263	9.0	6.6	284	6.1	130	45.2	3.16	0.63	0.1	2.15	10
30...	1130	1,570	9.2	7.0	133	6.2	49	17.2	1.49	0.44	0.1	0.97	12
JUL
11...	0945	209	8.5	6.7	292	8.4	130	45.3	3.19	0.72	0.1	2.06	13

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

Date	Bicar- bonate, wat flt incrm. titr., field, mg/L (00453)	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)	Residue on evap. at 180degC wat flt mg/L (70300)	Alum- inum, water, fltrd, ug/L (01106)	Alum- inum, water, unfltrd recover -able, ug/L (01105)	Cadmium water, fltrd, ug/L (01025)	Copper, water, fltrd, ug/L (01040)
DEC
05...	6	1.36	0.63	15.3	242	368	0.54	94.7	399	140	2,790	1.7	6.4
MAY
02...	12	1.22	0.41	9.76	116	187	0.27	139	196	20	1,140	2.3	13.5
30...	15	0.36	0.2	5.11	39.9	73	0.11	355	84	25	1,410	0.9	4.1
JUL
11...	16	0.51	0.4	8.86	114	184	0.26	110	195	20	770	1.5	2.9

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

Date	Copper, water, unfltrd recover -able, ug/L (01042)	Iron, water, fltrd, ug/L (01046)	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)	Zinc, water, fltrd, ug/L (01090)
DEC
05...	E20	2,880	5,690	<1	1,380	1,300	<0.02	<3	<0.3	531
MAY
02...	40	1,060	2,840	<1	744	723	<0.02	<3	<0.3	589
30...	40	60	4,310	M	220	609	<0.02	<3	<0.3	209
JUL
11...	10	390	1,040	<1	539	492	<0.02	<3	<0.3	322
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value. M -- Presence of material verified but not quantified.

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)
JAN						MAY
23...	1045	63	599	0.3		23...	1301	1,180	143	7.8
APR						JUN
10...	1500	77	515	9.8		23...	1350	472	203	11.1