ARKANSAS RIVER BASIN

07109500 ARKANSAS RIVER NEAR AVONDALE, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--April to September 1976, April 1979 to September 1980, December 1985 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07109500

PERIOD OF DAILY RECORD.--

DISSOLVED OXYGEN: July 1979 to September 1980, August 1988 to current year.

pH: July 1979 to September 1980, September 1988 to current year.

SPECIFIC CONDUCTANCE: July 1979 to September 1980, December 1985 to current year.

WATER TEMPERATURE: July 1979 to September 1980, December 1985 to current year.

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

REMARKS.--Daily dissolved-oxygen records are poor. Daily pH records are fair except for Oct. 1, 8, which are poor. Daily specific-conductance records are good except for Feb. 7-10 and Mar. 5-25, which are fair. Daily water-temperature records are good. Daily data that are not published are either missing or of unacceptable quality. Daily mean pH records are available from the district office.

EXTREMES FOR PERIOD OF RECORD.--

DISSOLVED OXYGEN: Maximum, 14.0 mg/L, Feb. 16, 1996; minimum, 2.6 mg/L, July 14, 1992.

pH: Maximum, 9.2 units, Apr. 19, 2002; minimum, 7.2 units, on many days in 1992, 1995-96.

SPECIFIC CONDUCTANCE: Maximum, 1,800 microsiemens/cm, Sept. 14, 2002; minimum, 246 microsiemens/cm, June 16, 1980.

WATER TEMPERATURE: Maximum, 31.5°C, Aug. 6, 1980; minimum, 0.0°C, on many days.

EXTREMES FOR CURRENT YEAR.--

DISSOLVED OXYGEN: Maximum, 13.1 mg/L, Dec. 18, 22; minimum, 3.9 mg/L, May 14.

pH: Maximum, 8.9 units, Oct. 1, Sept. 29; minimum, 7.4 units, May 13-14, 16.

SPECIFIC CONDUCTANCE: Maximum, 1,400 microsiemens/cm, Aug. 10; minimum, 472 microsiemens/cm, June 4.

WATER TEMPERATURE: Maximum, 30.3° C, July 25; minimum, 0.0° C, on many days.

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...	1500	163	12.7	8.6	1,270	7.5	119	46.3	4.92	100	E173	43.7	1.26
MAR
10...	1545	196	9.9	8.4	1,240	14.0	110	40.6	5.00	101	168	53.8	1.34
MAY
28...	1115	2,200	7.6	8.2	712	17.0	69.0	22.3	3.42	39.4	150	15.8	0.7
AUG
26...	1630	285	7.3	8.4	795	27.5	76.5	28.6	4.22	56.9	130	23.8	0.9

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...	424
MAR
10...	377
MAY
28...	206
AUG
26...	240
E -- Estimated laboratory analysis value.

Dissolved oxygen, water, unfiltered, milligrams per liter 

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	12.0	4.8	8.0	12.2	10.8	11.6	11.9	8.5	10.2	11.2	8.7	9.6
2	9.7	6.3	7.3	11.6	9.1	10.5	11.9	8.3	9.9	12.0	8.5	10.1
3	8.4	6.5	7.5	10.3	8.7	9.5	11.8	8.7	10.1	11.8	8.0	9.9
4	8.8	7.0	7.9	10.3	8.6	9.5	12.3	9.1	10.6	11.5	8.1	9.4
5	9.4	6.8	8.1	10.5	8.5	9.5	12.3	9.1	10.2	10.9	8.2	9.5
6	9.8	7.0	8.4	10.4	8.3	9.5	12.7	8.6	10.5	11.9	7.8	9.3
7	9.7	7.1	8.4	10.3	8.0	9.2	12.1	8.5	10.1	11.6	7.5	9.4
8	9.8	7.0	8.4	10.1	8.1	9.1	12.6	8.7	10.3	11.9	7.0	9.2
9	9.5	6.8	7.9	9.4	7.3	8.4	12.8	8.7	10.6	11.9	7.5	9.4
10	9.3	6.4	7.6	10.2	7.8	9.0	12.9	8.5	10.4	12.5	8.5	10.0
11	9.8	6.5	7.8	10.4	8.2	9.3	12.4	8.6	10.2	11.7	8.3	9.9
12	10.3	6.9	8.3	10.7	8.5	9.6	13.0	8.7	10.4	12.1	7.6	9.5
13	10.3	6.7	8.5	10.4	8.6	9.4	12.7	8.1	10.2	12.2	7.1	9.4
14	10.2	6.9	8.3	10.2	8.2	9.0	12.4	8.0	9.9	11.9	7.3	9.1
15	10.6	7.0	8.6	10.6	8.5	9.3	11.6	8.5	9.8	11.7	7.7	9.2
16	10.6	6.8	8.4	10.2	8.1	9.2	12.7	8.1	10.1	12.1	7.9	9.6
17	10.2	6.2	8.0	9.5	7.5	8.7	12.7	7.8	9.5	12.0	7.5	9.5
18	10.2	6.2	7.9	9.2	7.6	8.5	13.1	8.4	10.2	12.1	7.7	9.6
19	10.6	6.3	8.2	9.3	7.7	8.6	12.7	8.8	10.5	11.9	6.7	9.3
20	10.9	6.3	8.5	9.5	7.4	8.6	---	---	---	11.2	6.4	8.5
21	11.8	6.9	8.9	9.8	7.5	8.7	12.7	9.2	10.7	11.4	6.6	8.6
22	12.4	7.8	9.6	9.8	7.4	8.7	13.1	8.9	10.9	11.1	7.7	9.5
23	12.2	8.1	10.4	10.0	7.9	9.1	12.8	9.3	10.8	11.9	8.3	9.6
24	---	---	---	---	---	---	12.6	9.3	10.8	11.4	7.9	9.7
25	---	---	---	---	---	---	12.3	8.5	9.9	10.5	7.7	9.2
26	---	---	---	---	---	---	12.1	8.7	9.9	11.7	8.0	9.7
27	---	---	---	12.0	9.1	10.5	12.1	8.7	9.9	11.1	7.1	9.1
28	---	---	---	11.3	8.5	10.0	11.3	8.8	9.9	10.8	7.1	8.7
29	11.1	10.4	10.8	10.9	8.4	9.6	11.3	8.3	9.7	11.8	7.6	9.4
30	11.6	10.2	11.0	11.6	8.8	10.0	11.8	8.5	9.7	12.0	7.9	9.7
31	12.0	10.9	11.3	---	---	---	11.7	8.6	10.0	12.1	7.6	9.5
MONTH	---	---	---	---	---	---	---	---	---	12.5	6.4	9.4
	FEBRUARY			MARCH			APRIL			MAY
1	11.3	6.9	8.8	11.1	7.9	9.7	8.6	6.3	7.5	9.3	7.5	8.3
2	11.2	7.3	8.9	11.5	7.9	9.8	8.8	6.9	7.8	9.9	6.9	8.4
3	12.0	7.9	9.4	10.5	7.1	9.0	9.2	7.4	8.0	9.8	6.3	8.1
4	11.8	7.9	9.8	10.6	7.7	9.5	9.7	7.4	8.4	9.1	6.2	7.7
5	11.8	8.4	9.8	11.4	7.9	10.1	9.3	7.8	8.4	9.7	6.4	7.9
6	12.2	9.1	10.6	10.1	6.9	8.8	9.8	8.4	8.9	10.0	6.7	8.0
7	11.8	8.4	9.8	10.3	6.9	8.7	9.7	8.5	9.1	9.8	5.8	7.7
8	11.3	8.4	9.6	9.9	6.5	8.3	10.0	7.5	8.6	9.9	5.9	7.5
9	11.6	8.6	9.9	10.6	7.0	8.8	9.6	7.4	8.5	9.9	5.1	7.4
10	11.7	8.3	9.6	10.5	6.8	8.6	9.4	7.1	8.3	9.8	5.3	7.4
11	11.1	8.8	10.0	10.0	5.9	8.0	9.4	7.3	8.2	9.0	5.2	7.2
12	11.3	7.9	9.9	10.2	6.2	8.0	9.4	7.0	8.2	9.5	5.3	7.2
13	10.2	7.6	8.8	9.7	5.5	7.7	9.5	6.7	8.1	8.8	4.0	6.6
14	10.2	7.4	8.5	9.9	5.8	7.7	9.5	6.9	8.1	7.2	3.9	5.5
15	10.4	7.6	8.9	9.9	5.5	7.5	9.3	7.3	8.1	7.0	4.2	5.7
16	10.6	8.6	9.4	10.1	6.0	7.9	10.1	6.9	8.4	6.4	4.5	5.4
17	10.4	7.4	9.2	9.9	6.4	8.0	10.5	6.8	8.2	6.9	4.9	5.9
18	10.6	7.6	8.9	9.0	6.8	8.1	10.6	6.6	8.3	7.6	5.5	6.6
19	11.6	7.6	9.4	10.0	8.6	9.3	8.2	6.7	7.7	8.1	6.3	7.3
20	10.8	8.1	9.3	9.4	7.3	8.5	8.6	7.0	7.7	8.5	6.9	7.7
21	10.3	7.2	9.1	9.6	8.3	8.9	8.5	6.3	7.5	8.3	6.8	7.5
22	9.8	6.9	8.5	9.7	7.1	8.7	8.0	6.3	7.1	8.0	6.4	7.2
23	11.1	7.4	9.5	9.6	7.3	8.5	8.0	6.5	7.3	7.9	6.3	7.1
24	12.2	9.5	10.9	9.6	7.6	8.5	8.7	6.9	7.8	8.1	6.6	7.4
25	12.3	9.1	10.3	8.7	6.7	7.8	8.5	6.9	7.7	8.3	7.2	7.7
26	12.0	9.6	10.8	8.6	6.9	7.8	8.0	6.4	7.3	7.8	7.2	7.4
27	11.4	8.2	10.0	8.9	7.1	8.1	8.6	6.6	7.7	8.1	7.2	7.7
28	11.5	8.7	10.2	10.3	8.5	9.4	8.6	6.8	7.7	8.0	7.3	7.7
29	---	---	---	9.8	7.8	8.9	8.9	6.6	7.6	8.0	7.2	7.7
30	---	---	---	9.9	7.3	8.8	9.2	6.9	8.0	8.0	7.0	7.6
31	---	---	---	9.2	6.6	8.1	---	---	---	7.9	7.1	7.5
MONTH	12.3	6.9	9.6	11.5	5.5	8.6	10.6	6.3	8.0	10.0	3.9	7.3
	JUNE			JULY			AUGUST			SEPTEMBER
1	7.5	7.0	7.4	7.3	5.9	6.6	7.4	6.0	6.6	6.9	5.4	6.3
2	7.8	7.0	7.4	7.4	5.9	6.6	7.2	6.0	6.6	6.3	5.1	5.7
3	7.6	7.1	7.4	7.4	6.0	6.7	7.3	5.5	6.6	6.0	5.3	5.6
4	7.5	7.1	7.4	7.5	6.1	6.7	7.0	5.4	6.1	6.3	5.0	5.8
5	7.6	7.4	7.5	7.6	6.1	6.8	7.1	5.1	6.0	6.9	5.1	5.9
6	7.8	6.6	7.3	7.4	6.0	6.7	7.0	5.3	6.1	7.2	5.5	6.3
7	7.8	6.9	7.4	7.7	6.0	6.8	7.6	5.4	6.4	7.2	5.7	6.4
8	7.7	6.5	7.2	7.8	6.0	6.9	7.5	5.1	6.1	7.4	5.9	6.6
9	7.6	6.6	7.1	8.0	6.2	7.0	6.9	4.5	5.7	7.6	6.2	6.8
10	7.6	6.8	7.3	8.0	6.0	7.0	---	---	---	7.7	6.5	6.9
11	---	---	---	7.8	6.0	6.9	---	---	---	8.1	6.0	7.1
12	---	---	---	8.0	5.9	7.0	---	---	---	7.9	6.0	6.9
13	7.4	6.5	7.1	7.9	6.0	6.9	---	---	---	8.5	6.4	7.6
14	7.5	6.6	7.1	8.1	6.0	7.0	8.1	5.6	6.7	8.6	6.5	7.7
15	7.6	6.5	7.1	7.9	6.1	7.1	8.8	5.4	7.0	8.6	6.3	7.3
16	7.5	6.7	7.1	---	---	---	8.6	5.1	6.7	8.2	6.0	7.0
17	7.6	6.6	7.1	---	---	---	8.6	4.5	6.4	7.8	6.0	6.8
18	7.4	6.7	7.0	7.8	5.7	6.8	7.9	4.4	5.9	8.3	6.2	7.2
19	7.6	6.7	7.2	7.3	5.5	6.7	---	---	---	8.1	5.6	6.9
20	7.3	6.2	7.0	---	---	---	---	---	---	8.3	5.9	6.9
21	7.5	6.6	7.1	---	---	---	---	---	---	8.6	5.7	6.9
22	7.7	6.6	7.2	---	---	---	---	---	---	8.6	5.7	7.1
23	7.6	6.3	7.0	---	---	---	7.8	5.1	6.2	9.1	5.6	7.1
24	7.4	6.4	6.9	7.6	5.4	6.7	7.7	4.5	5.8	10.1	5.6	7.5
25	7.7	6.5	7.1	7.5	5.8	6.5	6.3	4.1	5.1	11.1	6.5	8.3
26	7.6	6.5	7.1	7.7	5.6	6.7	7.2	4.6	5.5	11.5	6.4	8.5
27	7.5	6.3	6.9	---	---	---	7.2	5.0	5.9	11.9	6.4	8.6
28	7.5	6.4	6.9	---	---	---	6.7	5.1	5.8	12.3	6.3	8.8
29	7.5	6.5	7.0	---	---	---	---	---	---	12.6	5.9	8.6
30	7.3	6.1	6.7	---	---	---	---	---	---	11.2	5.9	7.7
31	---	---	---	---	---	---	---	---	---	---	---	---
MONTH	---	---	---	---	---	---	---	---	---	12.6	5.0	7.1

pH, water, unfiltered, field, standard units 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAY	MAX	MIN	MEDIAN	MAX	MIN	MEDIAN	MAX	MIN	MEDIAN	MAX	MIN	MEDIAN
	OCTOBER			NOVEMBER			DECEMBER			JANUARY
1	8.9	8.1	8.6	8.4	7.9	8.2	8.4	8.1	8.3	8.6	8.3	8.3
2	8.5	8.0	8.1	8.4	8.0	8.3	8.5	8.1	8.2	8.6	8.3	8.4
3	8.3	7.9	8.1	8.2	7.9	8.1	8.5	8.1	8.3	8.6	8.2	8.4
4	8.4	7.9	8.1	8.3	7.9	8.1	8.5	8.1	8.3	8.6	8.2	8.3
5	8.4	8.0	8.0	8.3	7.9	8.1	8.5	8.1	8.2	8.5	8.2	8.3
6	8.5	7.9	8.0	8.2	7.9	8.1	8.5	8.1	8.2	8.6	8.2	8.2
7	8.6	7.9	8.1	8.2	8.0	8.1	8.5	8.1	8.2	8.6	8.1	8.3
8	8.7	8.0	8.2	8.3	8.0	8.2	8.6	8.1	8.2	8.7	8.1	8.3
9	8.7	8.1	8.2	8.2	7.8	8.0	8.5	8.1	8.2	8.6	8.1	8.3
10	8.7	8.0	8.2	8.3	7.8	8.1	8.6	8.1	8.3	8.7	8.2	8.4
11	8.2	7.6	8.0	8.3	7.8	8.0	8.6	8.1	8.2	8.6	8.2	8.4
12	8.1	7.5	7.6	8.2	7.8	8.0	8.6	8.1	8.2	8.7	8.1	8.3
13	8.2	7.5	7.8	8.2	8.0	8.1	8.6	8.1	8.3	8.7	8.1	8.3
14	8.2	7.6	7.8	8.2	8.0	8.0	8.6	8.1	8.2	8.6	8.1	8.2
15	8.3	7.6	7.8	8.2	7.9	8.1	8.4	8.1	8.2	8.6	8.1	8.2
16	8.2	7.6	7.7	8.2	7.9	8.1	8.6	8.1	8.2	8.5	8.1	8.3
17	8.2	7.6	7.7	8.1	7.9	8.1	8.7	8.1	8.2	8.5	8.1	8.2
18	8.3	7.7	7.8	8.1	7.9	8.0	8.7	8.1	8.3	8.5	8.1	8.3
19	8.4	7.7	7.8	8.1	8.0	8.1	8.6	8.2	8.3	8.6	8.0	8.3
20	8.5	7.7	7.9	8.1	7.9	8.1	8.7	8.3	8.4	8.7	8.0	8.2
21	8.6	7.8	7.8	8.2	8.0	8.0	8.6	8.3	8.4	8.6	8.0	8.2
22	8.7	7.8	8.1	8.2	7.9	8.1	8.6	8.2	8.4	8.5	8.2	8.3
23	8.5	7.8	8.0	8.3	8.0	8.1	8.7	8.3	8.3	8.5	8.2	8.3
24	---	---	---	---	---	---	8.6	8.3	8.4	8.4	8.1	8.3
25	8.5	7.8	8.0	---	---	---	8.6	8.3	8.4	8.3	8.1	8.2
26	8.4	7.8	7.8	8.4	8.2	8.2	8.5	8.3	8.4	8.4	8.1	8.3
27	---	---	---	8.4	8.2	8.4	8.5	8.2	8.4	8.5	8.0	8.2
28	---	---	---	8.3	8.1	8.3	8.5	8.2	8.3	8.3	7.8	8.1
29	---	7.8	8.0	8.4	8.1	8.2	8.5	8.2	8.3	8.5	8.0	8.2
30	8.2	7.9	8.0	8.4	8.1	8.2	8.6	8.2	8.3	8.5	8.1	8.2
31	8.2	7.8	8.0	---	---	---	8.6	8.3	8.4	8.7	8.1	8.2
MAX	---	---	---	---	---	---	8.7	8.3	8.4	8.7	8.3	8.4
MIN	---	---	---	---	---	---	8.4	8.1	8.2	8.3	7.8	8.1
	FEBRUARY			MARCH			APRIL			MAY
1	8.6	7.9	8.2	8.4	8.1	8.3	8.2	7.9	7.9	8.3	8.0	8.1
2	8.7	8.1	8.3	8.4	8.2	8.3	8.2	7.9	8.1	8.4	7.9	8.0
3	8.7	8.2	8.3	8.3	8.1	8.2	8.2	8.0	8.1	8.2	7.9	7.9
4	8.5	8.1	8.4	8.4	8.1	8.3	8.3	8.1	8.2	8.3	7.9	8.0
5	8.6	8.1	8.3	8.4	8.1	8.3	8.3	8.1	8.1	8.4	7.9	8.0
6	8.6	8.3	8.4	8.3	8.1	8.3	8.4	8.2	8.3	8.4	7.8	7.9
7	8.6	8.3	8.4	8.3	8.0	8.2	8.3	8.2	8.3	8.4	7.8	7.9
8	8.6	8.3	8.4	8.3	8.0	8.2	8.3	8.2	8.2	8.4	7.8	7.9
9	8.6	8.3	8.5	8.4	8.0	8.2	8.3	8.2	8.2	8.3	7.6	7.8
10	8.5	8.3	8.4	8.4	8.0	8.2	8.3	8.2	8.2	8.3	7.6	7.7
11	8.4	8.2	8.4	8.3	7.9	8.1	8.4	8.1	8.2	8.2	7.5	7.7
12	8.5	8.2	8.4	8.3	7.9	8.1	8.4	8.1	8.2	8.3	7.5	7.8
13	8.4	8.2	8.2	8.2	7.9	8.0	8.4	8.1	8.2	8.2	7.4	7.7
14	8.4	8.1	8.2	8.3	7.9	8.0	8.5	8.1	8.2	7.8	7.4	7.6
15	8.5	8.2	8.3	8.2	7.9	8.0	8.4	8.1	8.2	7.9	7.5	7.6
16	8.5	8.2	8.3	8.3	7.9	8.0	8.5	8.0	8.2	7.6	7.4	7.5
17	8.5	8.2	8.3	8.1	7.8	8.0	8.6	8.1	8.2	7.7	7.5	7.5
18	8.5	8.2	8.3	7.9	7.7	7.8	8.7	8.1	8.2	7.8	7.6	7.7
19	8.6	8.2	8.3	8.0	7.8	7.9	8.1	8.0	8.1	8.0	7.7	7.9
20	8.4	8.2	8.3	7.9	7.7	7.8	8.3	8.0	8.1	8.0	7.8	7.9
21	8.4	8.1	8.3	7.9	7.8	7.8	8.2	8.0	8.1	7.9	7.7	7.9
22	8.3	8.0	8.1	7.9	7.7	7.8	8.3	8.0	8.1	7.9	7.8	7.9
23	8.4	8.0	8.3	7.9	7.8	7.9	8.2	7.9	8.1	8.0	7.8	7.9
24	8.5	8.2	8.4	7.9	7.8	7.8	8.1	8.0	8.1	8.0	7.8	7.9
25	8.5	8.2	8.3	8.0	7.7	7.8	8.1	8.0	8.1	8.1	7.9	7.9
26	8.5	8.3	8.4	8.0	7.8	7.9	8.3	8.0	8.1	8.1	7.8	8.0
27	8.4	8.2	8.3	8.1	7.9	8.0	8.2	8.0	8.1	8.2	8.0	8.1
28	8.5	8.2	8.3	8.2	8.0	8.2	8.2	7.9	8.0	8.2	8.0	8.1
29	---	---	---	8.1	7.9	8.0	8.3	7.8	8.0	8.2	8.0	8.1
30	---	---	---	8.1	8.0	8.1	8.3	7.9	8.1	8.2	8.1	8.1
31	---	---	---	8.2	7.9	8.0	---	---	---	8.1	8.1	8.1
MAX	8.7	8.3	8.5	8.4	8.2	8.3	8.7	8.2	8.3	8.4	8.1	8.1
MIN	8.3	7.9	8.1	7.9	7.7	7.8	8.1	7.8	7.9	7.6	7.4	7.5
	JUNE			JULY			AUGUST			SEPTEMBER
1	8.1	8.0	8.0	8.3	8.1	8.2	8.2	8.0	8.1	8.0	7.9	8.0
2	8.1	7.9	8.0	8.4	8.0	8.2	8.3	8.1	8.1	8.0	7.9	8.0
3	8.0	7.9	7.9	8.5	8.1	8.2	8.3	8.1	8.1	8.0	7.9	7.9
4	8.0	7.9	7.9	8.4	8.1	8.2	8.3	8.0	8.1	7.9	7.8	7.8
5	8.0	7.9	8.0	8.4	8.1	8.3	8.3	8.0	8.1	7.9	7.8	7.8
6	8.0	7.9	8.0	8.4	8.1	8.2	8.3	8.1	8.1	8.0	7.8	7.8
7	8.0	7.9	8.0	8.3	8.0	8.2	8.4	8.0	8.2	8.0	7.8	7.8
8	8.0	7.9	8.0	8.4	8.1	8.3	8.4	8.0	8.2	8.0	7.7	7.8
9	8.0	7.9	7.9	8.4	8.1	8.3	8.4	8.0	8.1	8.1	7.8	7.8
10	8.0	7.9	7.9	8.4	8.1	8.3	8.1	7.8	8.0	8.0	7.8	7.9
11	---	---	---	8.4	8.1	8.2	8.3	8.0	8.1	8.1	7.8	7.9
12	---	---	---	8.4	8.1	8.2	8.4	8.1	8.1	8.1	7.8	7.8
13	8.0	7.8	7.9	8.5	8.2	8.3	8.5	8.0	8.1	8.0	7.8	7.9
14	8.0	7.8	7.9	8.5	8.2	8.3	8.7	8.0	8.2	8.1	7.8	7.9
15	8.0	7.9	8.0	8.5	8.2	8.2	8.8	8.0	8.3	8.1	7.8	7.9
16	8.0	8.0	8.0	---	---	---	8.8	8.0	8.2	8.2	7.8	7.9
17	8.1	7.9	8.0	---	---	---	8.8	8.0	8.2	8.1	7.7	7.8
18	8.0	7.9	8.0	8.2	7.9	8.1	8.7	7.9	8.1	8.2	7.8	7.9
19	8.0	8.0	8.0	8.2	7.9	8.0	---	---	---	8.2	7.8	7.9
20	8.0	7.9	7.9	8.2	7.9	7.9	8.4	8.1	8.3	8.4	7.8	8.0
21	8.1	7.9	8.0	8.1	7.9	8.0	8.4	8.0	8.1	8.6	7.9	8.1
22	8.1	8.0	8.1	8.2	8.0	8.0	8.6	8.0	8.1	8.5	8.0	8.1
23	8.1	8.0	8.1	8.2	8.0	8.0	8.5	8.0	8.1	8.7	8.0	8.2
24	8.1	8.0	8.1	8.3	8.0	8.1	8.4	7.9	8.0	8.6	8.0	8.2
25	8.1	8.0	8.1	8.3	8.0	8.1	8.4	7.8	8.0	8.6	7.8	8.1
26	8.2	8.0	8.1	8.4	8.0	8.1	8.5	7.9	8.1	8.7	7.8	8.0
27	8.3	8.0	8.1	8.3	7.8	8.0	8.5	8.0	8.1	8.7	7.8	8.0
28	8.3	8.1	8.2	8.2	7.9	8.0	8.3	7.9	8.0	8.8	7.8	8.1
29	8.3	8.1	8.2	8.0	7.8	7.9	8.1	7.9	8.0	8.9	7.8	8.0
30	8.3	8.0	8.2	8.0	7.9	8.0	8.0	7.8	7.9	8.7	7.7	7.8
31	---	---	---	8.1	8.0	8.1	8.1	7.9	8.0	---	---	---
MAX	---	---	---	---	---	---	---	---	---	8.9	8.0	8.2
MIN	---	---	---	---	---	---	---	---	---	7.9	7.7	7.8

Specific conductance, water, unfiltered, microsiemens per centimeter at 25 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	1,250	1,200	1,220	1,130	1,100	1,120	---	---	---	1,320	1,300	1,310
2	1,320	1,170	1,240	1,140	1,100	1,120	---	---	---	1,320	1,300	1,310
3	1,300	1,180	1,220	1,140	1,110	1,120	---	---	---	1,330	1,290	1,310
4	1,220	1,100	1,150	1,140	1,100	1,120	---	---	---	1,330	1,300	1,310
5	1,100	1,050	1,070	1,140	1,080	1,110	---	---	---	1,330	1,290	1,300
6	1,070	1,020	1,040	1,110	1,080	1,100	---	---	---	1,320	1,290	1,300
7	1,050	1,010	1,030	1,100	1,080	1,090	1,320	1,280	1,300	1,370	1,300	1,320
8	1,080	1,000	1,040	1,100	1,070	1,080	1,320	1,280	1,300	1,390	1,290	1,340
9	1,090	1,060	1,070	1,110	1,080	1,090	1,330	1,300	1,310	1,360	1,300	1,320
10	1,120	1,080	1,100	1,110	1,070	1,080	1,340	1,280	1,310	1,340	1,300	1,310
11	1,140	1,100	1,120	1,100	1,070	1,090	1,320	1,280	1,300	1,340	1,290	1,310
12	1,170	1,120	1,140	1,100	1,050	1,070	1,300	1,260	1,280	1,330	1,300	1,310
13	1,190	1,160	1,170	1,090	1,060	1,070	1,280	1,260	1,270	1,320	1,290	1,300
14	1,190	1,160	1,180	1,100	1,070	1,090	1,290	1,260	1,270	1,340	1,300	1,310
15	1,180	1,130	1,160	1,250	1,090	1,130	1,300	1,270	1,280	1,330	1,280	1,300
16	1,160	1,120	1,140	1,240	1,190	1,210	1,300	1,280	1,290	1,320	1,280	1,310
17	1,140	1,080	1,120	1,240	1,190	1,210	1,300	1,260	1,280	1,310	1,270	1,290
18	1,170	1,110	1,140	1,260	1,230	1,240	1,300	1,260	1,280	1,340	1,270	1,290
19	1,190	1,140	1,160	1,260	1,230	1,250	1,300	1,260	1,280	1,340	1,280	1,300
20	1,190	1,120	1,170	1,250	1,240	1,240	1,300	1,260	1,280	1,320	1,290	1,300
21	1,200	1,150	1,190	1,290	1,240	1,260	1,310	1,270	1,290	1,320	1,280	1,300
22	1,240	1,200	1,220	1,300	1,270	1,280	1,300	1,240	1,280	1,310	1,260	1,280
23	1,240	1,200	1,220	1,300	1,270	1,290	1,300	1,250	1,270	1,290	1,240	1,250
24	---	---	---	---	---	---	1,290	1,270	1,280	1,260	1,230	1,240
25	1,220	1,190	1,200	---	---	---	1,290	1,260	1,280	1,260	1,230	1,240
26	1,220	1,180	1,210	---	---	---	1,300	1,260	1,290	1,260	1,230	1,240
27	---	---	---	1,280	1,250	1,270	1,320	1,280	1,300	1,250	1,230	1,240
28	---	---	---	1,310	1,260	1,280	1,320	1,290	1,300	1,250	1,220	1,230
29	---	---	---	1,330	1,290	1,300	1,310	1,280	1,290	1,250	1,220	1,230
30	1,210	1,140	1,170	---	---	---	1,340	1,290	1,310	1,240	1,220	1,230
31	1,150	1,100	1,130	---	---	---	1,340	1,300	1,320	1,270	1,230	1,240
MONTH	---	---	---	---	---	---	---	---	---	1,390	1,220	1,290
	FEBRUARY			MARCH			APRIL			MAY
1	1,270	1,250	1,260	1,190	1,170	1,180	1,180	1,140	1,150	1,050	990	1,010
2	1,280	1,220	1,250	1,220	1,190	1,210	1,170	1,020	1,090	1,000	963	980
3	1,250	1,220	1,230	1,250	1,210	1,240	1,020	980	1,010	1,030	983	997
4	1,250	1,230	1,240	1,280	1,240	1,260	1,200	944	1,020	1,020	972	993
5	1,240	1,230	1,240	1,280	1,240	1,250	976	899	933	1,040	953	993
6	1,240	1,210	1,220	1,280	1,260	1,270	934	908	921	1,020	984	1,000
7	1,240	1,200	1,220	1,320	1,270	1,290	941	905	920	1,020	984	1,000
8	1,270	1,170	1,210	1,300	1,230	1,250	957	904	924	1,060	974	1,000
9	1,260	1,200	1,220	1,260	1,240	1,250	980	949	963	1,140	1,060	1,100
10	1,240	1,180	1,190	1,260	1,240	1,240	984	962	973	1,140	1,070	1,110
11	1,180	1,170	1,180	1,290	1,260	1,270	978	952	967	1,120	1,070	1,090
12	1,190	1,160	1,180	1,290	1,270	1,280	997	960	975	1,130	1,090	1,110
13	1,190	1,170	1,180	1,290	1,240	1,270	995	961	977	1,140	1,080	1,110
14	1,200	1,160	1,180	1,270	1,160	1,230	994	966	978	1,200	931	982
15	1,200	1,180	1,180	1,210	1,140	1,170	999	979	989	950	859	920
16	1,200	1,170	1,190	1,260	1,210	1,230	1,080	990	1,020	961	825	920
17	1,200	1,170	1,180	1,270	1,240	1,260	1,060	963	991	967	859	884
18	1,200	1,180	1,190	1,330	1,170	1,250	1,030	944	982	864	833	847
19	1,180	1,140	1,160	1,220	1,150	1,200	1,030	857	936	856	829	843
20	1,210	1,150	1,180	1,200	1,120	1,140	981	943	961	839	816	830
21	1,190	1,160	1,180	1,120	1,030	1,070	1,020	971	987	816	788	806
22	1,190	1,170	1,180	1,030	1,000	1,010	1,030	992	1,010	795	772	784
23	1,250	1,180	1,190	1,020	987	1,000	1,050	982	1,000	790	774	782
24	1,250	1,190	1,210	1,090	1,020	1,030	1,010	914	956	777	752	770
25	1,220	1,150	1,180	1,150	1,000	1,090	946	892	917	770	735	761
26	1,190	1,150	1,170	1,070	943	1,000	1,050	946	1,000	838	750	772
27	1,190	1,170	1,180	1,120	1,070	1,090	1,070	1,030	1,040	753	739	745
28	1,180	1,160	1,170	1,140	1,090	1,110	1,070	1,040	1,060	748	736	741
29	---	---	---	1,160	1,110	1,140	1,070	1,030	1,050	738	722	731
30	---	---	---	1,150	1,110	1,130	1,070	1,030	1,050	727	705	719
31	---	---	---	1,170	1,130	1,150	---	---	---	725	665	713
MONTH	1,280	1,140	1,200	1,330	943	1,180	1,200	857	992	1,200	665	905
	JUNE			JULY			AUGUST			SEPTEMBER
1	715	626	667	561	542	552	785	733	749	764	597	679
2	680	531	630	554	539	547	791	621	664	764	745	757
3	535	491	512	569	525	552	641	596	617	809	758	792
4	534	472	499	584	557	565	664	632	646	884	808	842
5	561	482	523	574	518	544	692	650	674	839	803	821
6	618	510	564	519	508	515	676	651	664	840	818	828
7	589	527	565	516	501	508	659	618	633	853	820	830
8	637	544	596	524	507	513	778	598	648	879	811	834
9	626	588	609	516	503	510	843	778	811	873	833	845
10	926	586	641	516	506	510	1,400	836	967	841	782	804
11	861	552	659	544	505	519	909	854	879	807	735	758
12	565	517	542	564	529	541	909	843	870	774	730	752
13	576	499	527	571	556	563	896	846	877	747	705	721
14	582	527	545	586	568	577	891	829	853	760	729	739
15	566	496	521	586	545	561	879	819	846	757	735	746
16	517	498	509	---	---	---	868	806	836	765	729	742
17	597	473	511	---	---	---	863	807	837	826	741	763
18	597	504	537	602	584	595	929	821	838	882	824	840
19	574	496	523	606	579	599	---	---	---	970	882	931
20	640	494	546	726	598	636	---	---	---	967	897	928
21	640	506	561	742	705	721	870	828	846	932	869	889
22	519	476	502	723	704	712	856	825	835	937	875	901
23	536	484	502	721	696	705	846	814	832	938	895	919
24	532	514	526	709	683	693	857	809	835	958	916	938
25	569	503	523	743	709	732	846	811	834	991	956	971
26	654	527	550	808	739	762	857	800	823	1,020	960	983
27	617	544	558	850	774	808	857	810	833	1,060	1,000	1,020
28	560	545	554	863	826	850	864	772	808	1,080	1,030	1,050
29	557	538	547	1,040	668	782	870	752	777	1,090	1,040	1,070
30	562	537	549	749	693	726	855	616	730	1,100	1,050	1,080
31	---	---	---	749	721	732	746	595	663	---	---	---
MONTH	926	472	553	---	---	---	---	---	---	1,100	597	859

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	17.5	12.5	15.3	5.9	4.3	5.2	7.4	1.8	4.8	5.4	3.1	4.1
2	15.0	12.6	13.6	7.1	5.2	6.2	8.2	3.3	5.9	5.6	1.0	3.5
3	15.6	11.5	13.1	10.5	5.8	7.9	6.2	3.2	4.4	6.5	1.3	4.0
4	17.8	9.9	13.7	9.4	5.3	7.3	5.5	3.1	4.3	6.4	2.9	4.8
5	20.0	10.8	15.2	10.5	4.8	7.7	6.5	4.2	5.3	5.2	2.8	4.2
6	18.8	11.9	15.3	10.8	4.7	7.8	6.5	1.9	4.3	8.2	4.3	6.1
7	19.5	11.3	15.3	11.0	5.3	8.3	6.7	2.3	4.7	7.5	2.6	5.2
8	20.1	12.0	16.0	11.4	6.6	9.1	7.1	3.4	5.1	8.0	2.3	5.3
9	21.0	14.5	17.4	12.7	7.8	10.2	6.8	1.7	4.3	6.3	2.5	4.5
10	21.5	14.6	17.6	10.2	6.8	8.6	6.5	1.4	4.1	4.4	0.4	2.5
11	20.3	12.6	16.5	10.0	5.2	7.5	6.4	1.9	4.3	3.6	1.1	2.3
12	16.7	12.5	14.6	9.2	4.0	6.7	6.3	2.1	4.2	7.4	2.5	4.6
13	17.9	9.5	13.6	9.4	5.4	7.4	6.6	1.3	4.1	7.4	1.6	4.6
14	17.6	9.8	13.7	10.4	7.5	8.8	7.0	2.1	4.7	6.8	2.3	4.6
15	16.9	9.0	13.0	8.8	6.1	7.3	5.9	2.3	4.4	7.1	1.8	4.1
16	16.4	9.1	12.7	8.6	3.5	6.3	5.7	1.9	4.1	5.5	0.6	3.0
17	16.5	8.4	12.5	9.6	4.2	6.9	7.4	3.1	5.3	6.0	1.0	3.4
18	16.9	9.5	13.2	10.3	5.6	7.9	5.9	2.2	4.3	5.1	0.0	2.6
19	16.1	9.2	12.7	10.1	4.6	7.4	5.6	2.1	3.8	7.2	0.1	3.7
20	17.0	8.4	12.7	10.5	4.3	7.5	3.6	0.0	1.6	8.8	2.6	5.7
21	16.3	9.6	11.8	10.9	5.1	8.1	4.6	0.4	2.3	6.0	2.8	4.3
22	15.2	9.0	12.0	10.5	5.0	8.0	4.0	0.0	1.9	3.1	0.4	1.2
23	10.8	7.9	8.6	10.2	5.4	7.6	2.7	1.4	1.9	3.4	0.0	1.4
24	---	---	---	---	---	---	3.2	0.1	1.5	4.8	0.0	2.4
25	13.5	7.8	10.7	---	---	---	1.8	0.0	0.5	6.5	1.2	3.9
26	13.0	7.6	10.4	---	---	---	1.1	0.0	0.2	7.0	0.9	4.1
27	---	---	---	5.9	0.1	3.2	3.1	0.0	1.3	9.5	3.0	6.3
28	---	---	---	7.0	1.2	4.3	5.7	1.9	3.7	8.8	4.6	6.9
29	---	---	---	8.4	3.6	5.9	5.7	2.0	3.8	8.9	3.8	6.4
30	8.8	5.2	6.8	7.3	3.0	5.2	6.3	2.7	4.4	6.9	2.7	4.9
31	6.0	4.8	5.4	---	---	---	4.7	0.8	3.0	8.6	4.4	6.7
MONTH	---	---	---	---	---	---	8.2	0.0	3.6	9.5	0.0	4.2
	FEBRUARY			MARCH			APRIL			MAY
1	9.7	5.0	7.3	9.6	3.2	6.1	18.1	8.5	13.4	18.7	12.8	15.6
2	9.2	4.8	6.8	10.7	3.6	6.9	16.6	9.3	12.8	19.6	12.7	15.6
3	7.9	3.2	5.3	11.2	3.2	7.2	15.0	8.6	11.5	20.3	12.9	16.1
4	7.4	0.7	4.1	7.5	2.4	4.8	14.8	8.3	11.2	18.5	11.8	14.8
5	5.4	1.9	3.7	8.4	1.0	4.4	11.9	8.3	10	21.0	11.0	15.6
6	4.0	0.6	2.2	11.0	2.7	6.8	11.6	7.7	9.5	19.8	12.9	16.0
7	2.3	0.0	0.5	13.0	4.1	8.6	10.5	7.0	8.8	21.2	13.1	16.8
8	2.1	0.0	0.5	13.6	5.3	9.4	14.8	6.8	10.4	20.4	13.2	16.5
9	2.5	0.0	0.7	13.7	4.6	9.3	16.8	7.7	12.0	20.7	11.7	15.9
10	4.8	0.0	2.0	14.2	5.1	9.7	18.0	9.6	13.5	20.0	12.3	15.9
11	5.2	0.5	3.0	15.0	6.1	10.6	18.3	10.4	14.1	20.7	10.7	15.4
12	7.9	1.0	4.6	15.8	7.2	11.4	18.3	10.6	14.3	22.4	11.7	16.9
13	8.6	4.6	6.6	17.0	7.4	12.2	20.1	10.5	14.9	19.9	13.2	16.8
14	8.9	5.2	7.1	16.7	7.9	12.5	18.4	11.2	14.7	23.0	13.9	18.2
15	7.8	4.9	6.4	17.5	9.5	13.3	15.2	10.9	13.1	19.9	15.1	17.3
16	6.8	3.7	5.1	15.1	8.3	11.9	18.9	9.2	13.5	22.9	14.6	18.2
17	10.1	2.9	6.6	11.6	8.1	9.7	18.5	10.5	14.3	21.1	15.8	18.5
18	8.1	5.7	6.6	9.0	5.0	7.6	18.0	10.4	14.2	19.9	14.9	17.4
19	6.9	4.1	5.5	5.5	3.5	4.6	14.1	9.0	10.4	17.9	14.0	16.0
20	7.0	2.9	5.1	12.0	5.0	8.4	17.8	9.5	13.0	17.2	12.4	14.6
21	9.8	2.6	6.3	9.5	7.5	8.3	19.4	11.6	15.1	19.8	12.5	16.1
22	10.0	4.1	7.1	13.6	5.6	9.5	18.9	12.5	15.4	21.0	13.5	17.2
23	7.2	2.4	4.9	15.2	7.4	11.2	14.4	10.2	12.7	21.4	14.5	17.9
24	2.4	0.0	1.0	14.1	8.5	11.2	15.6	8.4	11.5	19.7	14.4	17.3
25	3.3	0.0	1.3	16.2	9.3	12.3	18.0	10.4	13.9	18.3	14.7	16.4
26	5.4	0.9	3.2	14.6	8.8	11.8	20.9	11.7	15.8	18.4	14.6	16.5
27	8.5	1.9	5.3	11.6	6.3	9.6	20.4	12.5	16.3	20.3	14.5	17.2
28	6.6	2.9	5.1	10.4	4.6	7.2	21.4	13.7	17.1	20.7	15.4	17.8
29	---	---	---	12.5	4.3	8.3	22.9	13.4	17.6	20.8	15.0	17.6
30	---	---	---	15.2	4.8	9.9	21.1	13.6	17.0	20.5	15.1	17.6
31	---	---	---	17.3	7.0	12.0	---	---	---	18.8	15.9	17.1
MONTH	10.1	0.0	4.4	17.5	1.0	9.2	22.9	6.8	13.4	23.0	10.7	16.7
	JUNE			JULY			AUGUST			SEPTEMBER
1	18.5	15.8	17.2	25.9	18.9	22.4	27.6	20.0	23.6	23.8	18.0	20.5
2	20.0	16.2	18.0	26.0	19.0	22.6	28.0	20.8	24.1	25.7	19.0	22.2
3	19.5	16.2	17.7	26.8	19.2	23.0	28.2	21.5	24.7	22.8	19.6	21.2
4	19.2	16.5	17.6	26.4	19.7	23.0	29.1	21.4	24.7	25.8	17.0	21.2
5	17.0	16.1	16.6	26.6	19.6	23.1	28.6	21.8	24.9	26.3	18.6	22.4
6	20.4	15.6	17.8	25.1	19.1	22.2	28.4	21.4	24.6	23.5	19.0	21.1
7	17.9	14.7	16.3	25.4	18.6	21.8	28.5	21.5	24.8	22.9	18.6	20.5
8	21.2	14.8	17.8	26.6	18.9	22.6	26.6	21.8	24.0	25.1	17.7	21.2
9	20.5	15.5	18.1	25.7	18.8	22.3	29.2	20.6	24.3	21.4	18.4	20.1
10	21.1	15.7	18.1	26.8	18.9	22.8	28.2	14.9	22.6	23.3	17.6	20.0
11	22.2	15.6	18.7	27.5	19.3	23.2	29.3	21.3	25.0	23.3	16.3	19.4
12	20.8	16.1	18.7	26.7	19.7	23.2	29.4	21.1	24.9	23.6	16.1	19.8
13	20.4	16.4	18.2	27.6	20.7	24.0	28.7	19.9	24.0	20.3	15.1	16.7
14	21.6	16.2	18.6	26.8	20.0	23.4	28.6	19.4	23.7	21.1	13.4	17.0
15	22.4	16.3	19.2	26.9	19.9	22.9	28.5	19.3	23.5	22.6	14.8	18.4
16	21.5	17.1	19.3	---	---	---	28.3	19.3	23.6	23.1	15.8	19.3
17	22.7	16.8	19.3	---	---	---	28.4	19.0	23.3	19.8	15.5	17.9
18	21.5	17.2	19.3	---	---	---	26.5	20.0	23.0	19.5	13.1	15.9
19	21.6	17.3	19.2	28.5	21.2	24.5	---	---	---	20.6	12.2	16.3
20	20.4	17.2	18.5	27.0	21.3	24.0	28.8	20.1	24.4	21.4	13.4	17.2
21	22.6	16.7	19.3	29.1	21.1	24.8	28.8	20.2	24.5	22.1	14.5	18.2
22	22.7	17.0	19.9	28.2	21.5	24.8	28.3	20.1	23.7	21.6	13.5	17.5
23	23.2	17.1	20.1	28.1	21.5	24.7	27.8	19.5	23.1	22.9	14.1	18.4
24	23.0	17.3	20.3	29.8	20.6	24.9	29.2	19.5	23.9	21.5	14.4	17.9
25	22.6	16.5	19.7	30.3	21.4	25.4	29.0	20.0	23.8	22.0	13.6	17.7
26	23.5	17.3	20.4	29.2	21.6	25.2	27.7	20.6	23.8	22.5	13.7	18.0
27	24.4	17.9	21.1	25.9	22.2	24.0	28.7	20.3	24.2	21.5	13.7	17.7
28	24.2	17.7	21.0	27.0	21.5	23.9	24.1	21.1	22.2	21.0	12.9	17.0
29	23.0	17.7	20.5	25.7	19.9	22.7	24.4	19.4	21.7	21.1	13.1	17.1
30	25.1	18.0	21.5	27.5	20.9	24.0	22.3	19.7	20.8	19.0	14.5	16.3
31	---	---	---	25.7	20.9	23.4	22.1	18.8	20.0	---	---	---
MONTH	25.1	14.7	18.9	---	---	---	---	---	---	26.3	12.2	18.8