SAN JUAN RIVER BASIN

09372000 McELMO CREEK NEAR COLORADO-UTAH STATE LINE, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--November 1977 to September 1981, August 1987 to current year. For a complete listing of historical data available for this site,
see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09372000

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
28...	1230	18	8.3	2,790	10.2	1,500	310	164	5.76	2	183	210	37.5
DEC
17...	1330	19	8.4	2,360	4.3	1,400	292	162	4.80	2	172	E166	32.1
FEB
06...	1145	11	8.4	3,010	1.0	1,600	308	191	4.82	2	211	260	34.7
APR
09...	1200	12	8.4	2,940	11.0	1,500	292	191	5.11	2	209	201	36.3
30...	1230	0.96	8.2	3,320	17.8	1,700	326	219	7.35	3	259	282	46.6
MAY
22...	1200	3.5	8.1	3,200	22.5	1,900	379	234	11.2	3	287	272	45.5
JUN
25...	1145	2.7	8.1	2,770	21.6	1,400	294	170	8.73	2	195	279	36.8
JUL
24...	1100	8.8	8.1	2,220	23.5	990	216	110	6.08	2	117	229	31.2
SEP
04...	1300	32	8.3	1,750	20.1	790	185	79.6	5.30	1	78.6	196	23.7

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)
OCT
28...	0.38	6.9	1,480	2,310	3.15	112
DEC
17...	0.37	7.8	1,470	--	--	--
FEB
06...	0.44	5.6	1,620	2,530	3.44	75.8
APR
09...	0.36	1.3	1,570	2,430	3.30	80.6
30...	0.43	1.0	1,930	2,960	4.03	7.68
MAY
22...	0.5	11.8	1,740	2,870	3.90	27.0
JUN
25...	0.5	12.0	1,360	2,240	3.05	16.3
JUL
24...	0.5	13.0	1,020	1,650	2.25	39.4
SEP
04...	0.4	13.5	729	1,230	1.68	106
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)
APR
24...	1236	2.3	3,400	16.7