ARKANSAS RIVER BASIN

07099970 ARKANSAS RIVER AT MOFFAT STREET AT PUEBLO, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--October 1988 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07099970

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: October 1988 to current year.

WATER TEMPERATURE: October 1988 to current year.

INSTRUMENTATION.--Water-quality monitor with satellite telemetry.

REMARKS.--Daily specific-conductance records are fair except for Oct. 1, 12-28, Nov. 15 to Mar. 16, May 11-12, and Sept. 11-30, which are poor. Daily water-temperature records are good except for Oct. 1-2 and May 9-13, which are poor. Daily water-temperature data that are not published are either missing or of unacceptable quality. Daily specific-conductance data that are not published are either during periods of estimated discharge, are missing for the day, or are of unacceptable quality. During low-flow periods in October and November through March, velocities in the gage pool at the monitoring location became sufficiently slow for the water column to become thermally stratified. Recorded water-temperature values during these periods became completely unrepresentative of the river and were not published.

EXTREMES FOR PERIOD OF RECORD.--

SPECIFIC CONDUCTANCE: Maximum daily mean, 2,980 microsiemens/cm, Dec. 27, 2002, Jan. 1, 2003; minimum daily mean, 252 microsiemens/cm, June 29, 1993.

WATER TEMPERATURE: Maximum, 27.9°C, July 31, 2002; minimum, 0.0°C, on many days.

EXTREMES FOR CURRENT YEAR.--

SPECIFIC CONDUCTANCE: Maximum daily mean, 2,980 microsiemens/cm, Dec. 27, Jan. 1; minimum daily mean, 351 microsiemens/cm, July 2.

WATER TEMPERATURE: Maximum, 27.5°C, Aug. 11; minimum recorded, 3.1°C, Mar. 19, but was probably lower during periods of unreliable record, Oct. 11-29 and Nov. 15 to Mar. 17.

WATER-QUALITY DATA COLLECTED AS PART OF PREFERRED STORAGE OPTIONS PLAN,

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)	Calcium water, fltrd, mg/L (00915)	Magnes- ium, water, fltrd, mg/L (00925)	Potas- sium, water, fltrd, mg/L (00935)	Sodium, water, fltrd, mg/L (00930)	ANC, wat unf fixed end pt, lab, mg/L as CaCO3 (90410)	Chlor- ide, water, fltrd, mg/L (00940)	Fluor- ide, water, fltrd, mg/L (00950)
DEC
17...	1300	1.9	14.4	8.4	2,720	10.5	355	102	4.27	198	E180	67.1	1.19
MAR
10...	1015	1.5	12.9	8.3	2,680	13.0	398	119	4.39	236	170	68.9	1.15
MAY
28...	0915	1,960	8.8	8.4	673	16.0	65.4	21.0	3.22	34.7	138	13.6	0.6
AUG
26...	1430	117	8.5	8.7	481	26.0	57.0	15.2	2.67	24.9	101	8.77	0.5

WATER-QUALITY DATA COLLECTED AS PART OF PREFERRED STORAGE OPTIONS PLAN,

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Sulfate water, fltrd, mg/L (00945)
DEC
17...	1,370
MAR
10...	1,330
MAY
28...	188
AUG
26...	127
E -- Estimated laboratory analysis value.

Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAILY MEAN VALUES

DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP
1	1,920	858	2,320	2,980	2,860	2,550	1,040	746	---	352	457	482
2	---	859	2,430	2,960	2,850	2,560	---	799	---	351	416	---
3	---	855	2,480	2,940	2,870	2,570	716	823	---	365	418	---
4	890	847	2,490	2,930	2,810	2,600	683	824	---	373	425	---
5	846	808	2,480	2,930	2,830	2,680	676	815	---	367	426	651
6	841	807	2,510	2,910	2,720	2,700	671	783	---	366	425	613
7	833	810	2,540	2,900	2,800	2,730	---	780	---	366	423	590
8	831	802	2,570	2,850	2,890	2,750	665	791	---	368	---	548
9	857	804	2,600	2,820	2,910	2,780	684	---	---	370	550	514
10	903	799	2,610	2,860	2,910	2,800	690	---	429	372	548	481
11	---	788	2,640	2,880	2,770	2,790	690	1,660	---	377	543	459
12	1,340	784	2,690	2,880	2,650	2,800	701	1,820	389	395	528	458
13	1,500	786	2,720	2,850	2,660	2,770	702	---	---	398	545	457
14	1,660	786	2,790	2,810	2,660	2,760	704	709	390	391	531	460
15	1,800	852	2,800	2,860	2,670	2,750	715	---	380	377	522	464
16	1,950	877	2,830	2,940	2,680	2,740	709	---	372	384	526	466
17	1,960	903	2,860	2,880	2,680	---	711	---	374	384	535	483
18	1,880	1,040	2,890	2,900	2,730	---	712	---	370	401	---	530
19	1,990	---	2,890	2,910	---	---	---	---	362	408	---	609
20	1,990	1,450	2,890	2,850	---	796	719	---	---	422	524	548
21	1,930	1,520	2,890	2,850	---	744	724	---	356	---	522	506
22	1,970	1,620	2,910	2,820	---	733	727	---	355	440	527	549
23	2,010	1,750	2,920	2,850	2,270	740	718	---	359	441	521	562
24	2,050	1,890	2,930	2,870	2,460	761	715	---	360	445	520	608
25	1,940	2,080	2,940	2,860	2,490	799	717	---	359	464	514	657
26	1,780	2,090	2,960	2,840	2,500	818	778	---	359	---	502	---
27	1,910	2,140	2,980	2,800	2,510	810	791	---	357	---	495	862
28	1,830	2,180	2,970	2,780	2,540	788	791	---	355	482	501	910
29	---	2,210	2,960	2,840	---	851	808	---	354	457	---	941
30	---	2,260	2,930	2,830	---	870	792	---	354	439	---	953
31	858	---	2,970	2,860	---	998	---	---	---	444	462	---
MEAN	---	---	2,750	2,870	---	---	---	---	---	---	---	---
MAX	---	---	2,980	2,980	---	---	---	---	---	---	---	---
MIN	---	---	2,320	2,780	---	---	---	---	---	---	---	---

Temperature, water, degrees Celsius 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAY	MAX	MIN	MEAN	MAX	MIN	MEAN	MAX	MIN	MEAN	MAX	MIN	MEAN
	OCTOBER			NOVEMBER			DECEMBER			JANUARY
1	15.8	14.8	15.3	6.8	5.5	6.2	---	---	---	---	---	---
2	15.1	12.6	13.4	9.2	6.5	7.7	---	---	---	---	---	---
3	15.2	11.4	13.2	11.1	7.2	8.7	---	---	---	---	---	---
4	17.6	11.6	14.2	9.5	6.9	8.1	---	---	---	---	---	---
5	19.1	12.9	15.6	10.4	6.4	8.3	---	---	---	---	---	---
6	17.9	13.3	15.5	10.8	6.3	8.5	---	---	---	---	---	---
7	18.8	13.0	15.7	10.4	6.6	8.7	---	---	---	---	---	---
8	19.1	13.5	16.2	10.7	7.6	9.2	---	---	---	---	---	---
9	20.2	15.0	17.4	12.0	8.3	10.0	---	---	---	---	---	---
10	18.9	16.9	17.8	9.9	7.0	8.5	---	---	---	---	---	---
11	---	---	---	9.5	6.1	7.7	---	---	---	---	---	---
12	---	---	---	8.9	5.4	7.2	---	---	---	---	---	---
13	---	---	---	9.5	6.7	8.1	---	---	---	---	---	---
14	---	---	---	10.0	8.1	8.8	---	---	---	---	---	---
15	---	---	---	---	---	---	---	---	---	---	---	---
16	---	---	---	---	---	---	---	---	---	---	---	---
17	---	---	---	---	---	---	---	---	---	---	---	---
18	---	---	---	---	---	---	---	---	---	---	---	---
19	---	---	---	---	---	---	---	---	---	---	---	---
20	---	---	---	---	---	---	---	---	---	---	---	---
21	---	---	---	---	---	---	---	---	---	---	---	---
22	---	---	---	---	---	---	---	---	---	---	---	---
23	---	---	---	---	---	---	---	---	---	---	---	---
24	---	---	---	---	---	---	---	---	---	---	---	---
25	---	---	---	---	---	---	---	---	---	---	---	---
26	---	---	---	---	---	---	---	---	---	---	---	---
27	---	---	---	---	---	---	---	---	---	---	---	---
28	---	---	---	---	---	---	---	---	---	---	---	---
29	---	---	---	---	---	---	---	---	---	---	---	---
30	7.7	5.3	6.4	---	---	---	---	---	---	---	---	---
31	6.7	5.7	6.2	---	---	---	---	---	---	---	---	---
MONTH	---	---	---	---	---	---	---	---	---	---	---	---
	FEBRUARY			MARCH			APRIL			MAY
1	---	---	---	---	---	---	18.3	8.8	13.2	15.1	10.0	12.8
2	---	---	---	---	---	---	12.1	7.2	10.3	16.5	10.6	13.3
3	---	---	---	---	---	---	12.6	6.5	9.5	17.6	11.0	14.0
4	---	---	---	---	---	---	11.8	6.3	8.9	15.5	10.9	13.1
5	---	---	---	---	---	---	10.5	6.2	8.2	17.4	10.1	13.6
6	---	---	---	---	---	---	9.9	6.2	7.9	16.2	10.8	13.8
7	---	---	---	---	---	---	9.4	6.2	7.6	18.2	11.1	14.5
8	---	---	---	---	---	---	13.0	5.8	9.1	16.8	11.2	14.5
9	---	---	---	---	---	---	13.8	5.6	9.7	16.9	14.3	15.5
10	---	---	---	---	---	---	14.5	6.4	10.5	17.1	14.7	15.6
11	---	---	---	---	---	---	14.3	7.1	10.9	17.0	14.2	15.5
12	---	---	---	---	---	---	14.2	7.1	10.8	17.7	14.3	15.9
13	---	---	---	---	---	---	15.3	7.1	11.2	18.9	14.5	16.1
14	---	---	---	---	---	---	13.1	7.4	10.7	19.3	11.6	15.3
15	---	---	---	---	---	---	12.0	8.1	10.1	18.3	12.0	14.6
16	---	---	---	---	---	---	15.4	6.9	11.1	20.0	12.3	15.7
17	---	---	---	---	---	---	15.8	8.3	12.1	17.6	12.1	14.6
18	---	---	---	9.0	5.9	7.1	15.0	8.1	11.8	16.4	12.3	14.1
19	---	---	---	5.9	3.1	4.2	13.1	8.4	9.9	14.9	12.0	13.3
20	---	---	---	11.0	4.4	7.6	15.4	8.5	11.6	15.9	11.8	13.3
21	---	---	---	9.0	6.0	6.9	15.9	9.1	12.5	17.0	12.1	14.2
22	---	---	---	11.0	4.3	7.7	15.9	9.3	12.6	18.1	12.5	14.7
23	---	---	---	11.4	5.1	8.6	12.4	8.6	10.4	18.1	12.8	14.8
24	---	---	---	10.2	5.3	8.1	15.1	7.8	11.0	17.8	12.6	14.6
25	---	---	---	12.9	7.3	9.7	16.4	8.6	12.6	16.3	13.2	14.4
26	---	---	---	11.4	6.7	9.3	17.9	9.6	13.4	16.3	13.6	14.6
27	---	---	---	9.2	5.7	7.5	17.2	10.3	13.9	17.2	13.8	15.1
28	---	---	---	9.2	3.6	6.3	18.0	11.6	14.5	17.2	14.4	15.2
29	---	---	---	10.6	4.9	7.4	19.0	11.3	14.8	17.7	14.1	15.5
30	---	---	---	13.1	4.9	8.8	16.2	11.4	14.1	17.3	14.2	15.6
31	---	---	---	17.9	6.8	11.7	---	---	---	17.1	14.8	15.7
MONTH	---	---	---	---	---	---	19.0	5.6	11.2	20.0	10.0	14.6
	JUNE			JULY			AUGUST			SEPTEMBER
1	18.7	15.5	16.7	23.0	17.6	19.7	25.5	19.2	22.3	25.5	19.6	22.3
2	17.6	15.7	16.6	23.2	17.4	19.8	26.5	20.0	22.9	25.5	19.3	22.5
3	17.7	16.1	16.7	23.8	17.4	20.1	26.3	20.3	23.0	23.1	19.7	21.5
4	18.3	15.7	16.7	24.1	17.4	20.3	27.3	20.3	23.3	26.4	17.7	21.2
5	17.4	16.1	16.8	23.8	17.6	20.2	26.4	20.6	23.3	26.8	20.1	22.7
6	18.7	15.4	17.0	22.5	17.7	19.7	26.5	20.2	23.1	23.7	20.0	21.4
7	17.4	14.8	16.0	23.4	17.5	19.8	26.8	20.6	23.2	22.0	19.2	20.6
8	19.4	15.5	17.0	24.3	17.9	20.4	26.6	20.7	23.1	24.5	18.8	21.6
9	19.2	15.1	16.6	23.6	17.4	20.0	27.4	20.8	23.6	22.4	18.7	20.6
10	19.5	15.4	16.7	24.1	17.8	20.5	27.4	20.2	23.6	22.6	18.3	20.5
11	19.4	15.1	17.0	24.4	18.0	20.7	27.5	21.3	24.1	23.1	17.5	20.0
12	19.3	15.3	17.1	24.0	17.9	20.6	27.3	20.6	23.7	23.5	17.1	20.2
13	19.0	16.2	16.9	24.5	18.5	21.1	27.0	20.5	23.4	20.3	16.4	17.7
14	19.6	16.2	17.3	24.0	18.0	20.8	26.7	19.9	23.0	21.7	15.8	18.5
15	19.8	16.3	17.6	24.7	18.5	20.9	26.2	19.9	22.9	22.4	16.2	19.1
16	19.3	16.4	17.5	25.0	18.9	21.4	26.3	20.2	23.1	22.5	16.3	19.4
17	19.9	16.7	18.0	25.3	18.8	21.6	25.3	19.5	22.3	20.3	16.7	18.2
18	19.8	16.7	17.8	25.5	18.5	21.7	24.7	20.6	22.4	19.3	13.8	16.4
19	19.4	16.8	17.7	25.7	18.9	21.8	27.1	19.4	22.9	20.3	14.0	16.9
20	20.2	16.0	17.5	25.2	19.2	21.8	26.9	20.7	23.8	20.1	15.3	17.6
21	20.1	16.3	17.9	26.4	---	---	26.6	20.8	23.8	20.9	15.7	18.3
22	20.3	16.6	18.1	25.5	19.0	22.3	26.4	20.5	23.4	20.1	14.7	17.5
23	21.0	16.7	18.4	25.0	19.2	22.1	26.3	20.3	23.1	21.2	15.5	18.3
24	20.9	16.7	18.3	26.6	18.8	22.5	26.8	20.3	23.5	20.5	15.8	18.0
25	21.3	16.2	18.3	26.3	19.5	22.9	26.8	21.0	23.6	21.3	14.9	17.7
26	21.8	16.7	18.7	25.9	19.5	22.9	26.7	20.5	23.4	20.4	14.7	17.2
27	22.3	16.6	19.0	23.7	20.4	22.2	26.7	20.1	23.4	19.4	15.3	17.1
28	22.3	16.9	18.8	24.4	20.0	22.2	24.3	21.1	22.0	19.0	14.6	16.6
29	21.0	17.0	18.7	25.4	19.2	22.1	25.1	20.0	22.1	19.1	14.7	16.6
30	22.9	17.3	19.6	26.0	19.4	22.6	23.4	18.9	21.3	17.9	15.3	16.5
31	---	---	---	24.6	19.1	22.0	22.9	20.0	21.2	---	---	---
MONTH	22.9	14.8	17.6	26.6	---	---	27.5	18.9	23.0	26.8	13.8	19.1