PLATTE RIVER BASIN

06711565 SOUTH PLATTE RIVER AT ENGLEWOOD, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--March 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=06711565

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: March 1985 to current year.

pH: March 1985 to current year.

WATER TEMPERATURE: March 1985 to current year.

DISSOLVED OXYGEN: March 1985 to current year.

INSTRUMENTATION.--Water-quality monitor since March 1985.

REMARKS.--Water temperature record is good. Specific conductance record is fair. pH record is fair. Dissolved oxygen record is fair except for Apr. 21-30, July 17-28, and Sept. 9-11, which is poor.

EXTREMES FOR PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: Maximum, 2830 microsiemens/cm, Feb. 26, 2003; minimum, 139 microsiemens/cm, Aug. 17, 2000.

pH: Maximum, 10.4 units, Aug. 27, 1997; minimum, 6.4 units, Oct. 18, 1989.

WATER TEMPERATURE: Maximum, 29.0°C, Aug. 17, 1986, July 30, 1987, July 20, 2002; minimum, 0.0°C, freezing point on many days during winter.

DISSOLVED OXYGEN: Maximum, 19.0 mg/L, Feb. 7 and 9, 1995; minimum, 0.2 mg/L, June. 20-22, and July 3, 2002.

EXTREMES FOR CURRENT YEAR.--

SPECIFIC CONDUCTANCE: Maximum, 2830 microsiemens/cm, Feb. 26; minimum, 140 microsiemens/cm, Aug. 30.

pH: Maximum, 9.4 units, June 15; minimum, 7.3 units, July 25, 26.

WATER TEMPERATURE: Maximum, 28.0°C, July 12; minimum, 0.0°C, several days.

DISSOLVED OXYGEN: Maximum, 16.5 mg/L, Mar. 9; minimum, 1.5 mg/L, July 25.

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	---	---	---	---	---	---	11.2	8.6	9.6	12.1	9.7	10.6
2	---	---	---	11.3	9.1	10.1	11.1	8.4	9.5	12.6	10.0	11.1
3	---	---	---	11.0	9.0	9.7	10.7	8.6	9.3	12.5	9.5	10.7
4	---	---	---	11.0	8.8	9.5	10.3	8.7	9.4	12.2	9.4	10.4
5	---	---	---	11.0	8.5	9.1	11.4	9.1	9.9	12.0	9.2	10.1
6	---	---	---	10.8	8.0	9.1	11.1	9.1	9.9	12.5	8.4	10.1
7	---	---	---	10.6	8.0	9.0	11.3	9.2	10	12.3	8.7	10
8	---	---	---	10.6	7.2	8.7	11.3	9.2	10.1	12.3	8.8	10
9	---	---	---	9.6	7.0	8.1	11.3	9.5	10.2	12.6	8.9	10.3
10	---	---	---	10.6	7.4	8.8	11.6	9.2	9.8	12.2	9.3	10.5
11	---	---	---	10.9	8.1	9.2	10.8	9.1	9.7	12.6	9.8	10.8
12	---	---	---	10.9	8.4	9.4	11.2	9.1	9.9	12.4	10.0	10.8
13	---	---	---	10.5	7.5	8.9	11.1	9.1	9.7	12.3	9.6	10.5
14	---	---	---	9.9	7.3	8.2	10.7	9.0	9.7	12.4	9.3	---
15	---	---	---	9.4	6.9	8.1	10.8	9.1	9.7	12.0	---	---
16	---	---	---	10.5	8.1	9.1	10.8	9.2	9.8	---	---	---
17	---	---	---	10.5	8.0	8.9	10.4	8.8	9.6	12.8	---	---
18	---	---	---	10.4	7.7	8.7	10.7	8.8	9.6	12.4	9.7	10.7
19	---	---	---	10.5	7.7	8.7	11.1	9.1	10.0	13.1	9.6	10.8
20	---	---	---	10.5	7.8	8.7	10.9	9.6	10.1	13.2	9.4	10.7
21	---	---	---	10.4	7.7	8.5	11.1	9.4	10.1	12.1	9.3	10.4
22	---	---	---	10.5	7.6	8.8	11.2	9.6	10.2	12.4	9.2	10.5
23	---	---	---	10.8	7.6	8.9	11.5	9.9	10.5	12.6	10.1	11.0
24	---	---	---	9.9	8.1	8.9	11.8	10.2	10.9	12.9	9.4	10.8
25	---	---	---	10.9	8.4	9.6	11.9	10.5	11.0	13.2	9.4	10.8
26	---	---	---	11.1	8.9	9.9	11.9	10.5	11.1	13.4	9.5	10.9
27	---	---	---	11.0	9.2	9.9	11.9	10.3	11.1	14.0	8.7	10.5
28	---	---	---	10.9	8.7	9.6	11.9	9.8	10.7	13.1	8.4	10.4
29	---	---	---	10.9	8.5	9.4	11.5	9.3	10.2	14.0	9.8	11.2
30	---	---	---	11.2	8.5	9.5	11.8	9.2	10.3	14.2	9.5	11.0
31	---	---	---	---	---	---	12.2	9.7	10.6	14.1	9.0	10.8
MONTH	---	---	---	---	---	---	12.2	8.4	10.1	---	---	---
	FEBRUARY			MARCH			APRIL			MAY
1	15.6	8.5	10.9	15.1	9.4	11.5	11.0	8.1	9.5	9.3	8.6	8.9
2	12.8	8.0	9.7	15.5	9.3	11.5	11.5	8.0	9.5	9.8	8.5	9.0
3	12.4	8.9	10.3	15.9	8.7	11.3	12.0	8.0	9.6	9.7	8.1	8.9
4	12.9	9.7	10.9	14.4	8.2	10.9	12.1	8.7	10.1	9.9	8.2	8.9
5	12.9	8.9	10.5	15.3	9.7	11.7	12.5	9.0	10.3	10.2	7.8	9.0
6	12.7	9.5	11.0	15.8	8.9	11.4	12.9	9.2	10.6	10.8	7.6	9.0
7	12.8	7.2	10.5	15.2	7.8	10.6	14.0	9.3	11.0	11.0	7.6	9.0
8	12.7	9.7	11.0	16.1	7.2	10.8	14.9	9.3	11.1	11.4	7.3	9.1
9	13.0	9.6	11.1	16.5	7.2	10.9	11.6	9.1	10.3	9.9	7.2	8.7
10	12.9	9.9	11.1	15.6	7.1	10.4	11.7	9.2	10.3	10.4	9.0	9.7
11	13.4	9.6	11.1	15.1	6.5	10.1	12.0	8.5	10.2	11.0	8.2	9.4
12	13.5	9.6	11.0	14.4	6.1	9.8	12.9	8.6	10.4	10.7	8.0	9.2
13	13.5	9.0	10.7	15.1	6.5	9.9	13.2	8.8	10.5	10.8	8.0	9.1
14	14.0	8.5	10.5	15.0	6.3	9.6	11.6	9.3	10.1	11.0	6.6	9.0
15	11.6	8.5	9.7	14.9	5.8	9.3	10.9	9.1	9.9	11.5	6.6	8.6
16	13.8	8.8	10.7	13.8	6.0	9.2	10.8	9.5	10.0	11.7	6.8	8.7
17	15.0	8.9	11.1	11.0	6.1	---	10.9	9.3	10.0	10.3	7.2	8.4
18	15.3	8.2	10.9	---	---	---	11.4	9.4	10.2	10.1	7.4	8.4
19	15.5	8.5	11.1	---	---	---	10.0	9.3	9.6	9.3	7.6	8.5
20	16.1	8.5	11.4	---	---	---	11.3	9.1	10.2	10.4	7.8	8.9
21	15.7	8.6	11.5	---	---	---	11.4	8.6	9.9	9.9	7.3	8.5
22	15.8	8.4	11.6	10.9	9.9	10.5	10.8	8.6	9.4	10.1	7.3	8.6
23	15.9	9.3	11.8	10.5	9.5	10.1	10.2	8.7	9.3	9.7	6.9	8.1
24	14.8	9.9	12.0	10.2	9.9	10.1	10.6	9.2	10.1	9.4	6.7	7.9
25	15.0	10.2	11.9	10.4	9.0	9.8	10.5	8.6	9.6	9.4	7.7	8.3
26	14.0	9.8	11.3	10.2	9.0	9.7	10.7	8.1	9.4	9.4	7.7	8.3
27	13.7	9.3	10.9	10.4	9.5	10.1	11.0	8.0	9.4	9.4	7.6	8.3
28	14.1	9.0	11.0	10.9	9.6	10.3	11.2	8.2	9.3	9.3	7.4	8.2
29	---	---	---	11.2	9.6	10.3	10.4	8.4	9.1	9.3	7.4	8.1
30	---	---	---	11.1	9.1	10.1	9.1	8.4	8.7	8.8	7.4	8.0
31	---	---	---	11.0	8.6	9.9	---	---	---	8.9	7.3	7.9
MONTH	16.1	7.2	11.0	---	---	---	14.9	8.0	9.9	11.7	6.6	8.7
	JUNE			JULY			AUGUST			SEPTEMBER
1	8.4	7.3	7.8	10.3	5.5	7.5	---	---	---	8.1	6.4	7.2
2	8.9	7.4	8.0	10.1	5.9	7.7	---	---	---	8.2	6.3	7.1
3	9.1	7.2	8.0	10.3	5.2	7.7	---	---	---	8.3	6.3	7.2
4	9.0	7.2	7.9	11.3	4.8	7.6	---	---	---	8.4	6.4	7.3
5	8.7	7.5	8.0	11.4	4.6	7.5	---	---	---	8.5	6.4	7.3
6	9.3	7.1	8.1	11.0	5.0	7.7	---	---	---	7.9	6.4	7.2
7	9.2	7.2	8.1	10.0	5.6	7.6	---	---	---	8.1	6.4	7.1
8	9.4	6.8	8.0	11.9	4.7	7.9	---	---	---	8.7	6.4	7.3
9	9.7	6.3	7.6	12.0	4.3	7.5	---	---	---	8.9	6.5	7.6
10	10.2	6.4	7.9	12.2	4.3	7.7	---	---	---	11.7	7.1	8.1
11	9.9	7.1	8.2	11.6	3.9	7.4	---	---	---	10.4	6.9	8.4
12	10.2	7.2	8.2	11.9	3.7	7.4	---	---	---	9.3	6.5	7.9
13	10.1	7.1	8.3	12.0	3.5	7.2	---	---	---	9.2	6.5	7.9
14	10.3	6.5	8.4	12.0	3.4	7.2	---	---	---	9.8	7.0	8.5
15	11.8	6.3	8.4	9.7	4.3	6.6	---	---	---	9.6	6.5	7.9
16	11.0	6.4	8.3	10.4	5.2	7.0	---	---	---	9.7	6.4	7.7
17	10.7	6.5	7.9	9.9	4.7	7.2	---	---	---	9.7	6.3	7.6
18	9.2	6.8	7.7	9.9	4.7	7.0	11.4	---	---	10.3	6.6	8.2
19	9.7	6.2	7.9	8.1	4.3	5.9	11.2	5.2	7.7	10.5	6.7	8.4
20	10.1	6.1	7.4	8.1	5.1	6.4	11.6	4.7	7.4	10.6	6.7	8.1
21	9.9	6.0	7.7	8.4	5.1	6.4	11.5	4.6	7.2	10.4	6.7	8.0
22	9.5	5.9	7.6	8.8	4.6	6.7	12.1	4.6	7.1	10.7	6.6	8.1
23	10.1	6.2	7.9	8.6	4.7	6.5	11.7	5.1	7.5	11.0	6.4	8.1
24	8.2	6.2	7.1	8.1	1.9	5.8	10.9	5.1	7.3	11.2	6.6	8.3
25	9.7	6.1	7.9	5.5	1.5	3.4	10.4	5.2	7.2	11.3	6.9	8.5
26	10.5	5.7	7.9	5.8	2.2	3.8	9.4	5.3	7.0	10.8	6.9	8.4
27	10.3	5.3	7.6	9.5	3.1	6.8	9.1	5.5	7.0	11.1	6.9	8.6
28	10.7	5.3	7.4	8.5	---	---	9.2	5.7	7.1	11.2	6.9	8.7
29	10.5	5.3	7.5	---	---	---	8.8	6.0	7.1	11.3	7.0	8.8
30	10.8	5.5	7.9	---	---	---	7.9	6.1	7.0	11.6	7.2	9.0
31	---	---	---	---	---	---	7.8	6.7	7.4	---	---	---
MONTH	11.8	5.3	7.9	---	---	---	---	---	---	11.7	6.3	8.0

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	---	---	---	---	---	---	8.1	7.9	8.0	8.2	8.0	8.1
2	---	---	---	8.0	7.8	7.9	8.1	7.9	8.0	8.2	8.0	8.1
3	---	---	---	8.0	7.8	7.9	8.1	7.9	8.0	8.2	8.0	8.0
4	---	---	---	8.1	7.9	7.9	8.1	8.0	8.0	8.2	8.0	8.0
5	---	---	---	8.0	7.8	---	8.1	7.9	8.0	8.2	8.0	8.0
6	---	---	---	8.1	7.8	7.9	8.1	8.0	8.0	8.2	7.9	8.0
7	---	---	---	8.1	7.8	8.0	8.1	7.9	8.0	8.0	7.8	7.9
8	---	---	---	8.1	7.8	7.9	8.1	7.9	8.0	8.0	7.8	7.9
9	---	---	---	8.0	7.8	7.9	8.1	7.9	8.0	8.0	7.8	7.9
10	---	---	---	8.1	7.8	8.0	8.3	7.9	8.0	8.0	7.8	7.9
11	---	---	---	8.1	7.9	8.0	8.1	7.9	8.0	8.0	7.8	7.9
12	---	---	---	8.1	7.9	8.0	8.3	7.9	8.0	8.0	7.9	7.9
13	---	---	---	8.0	7.8	8.0	8.3	7.9	7.9	8.1	7.8	7.9
14	---	---	---	8.1	7.8	8.0	8.1	7.9	8.0	8.0	7.8	7.9
15	---	---	---	8.0	7.8	7.9	8.1	7.9	8.0	8.1	7.8	7.9
16	---	---	---	8.0	7.9	7.9	8.2	8.0	8.0	8.0	7.8	7.9
17	---	---	---	8.1	7.9	8.0	8.1	7.9	8.0	8.0	7.8	8.0
18	---	---	---	8.1	7.8	8.0	8.1	7.9	8.0	8.0	7.8	8.0
19	---	---	---	8.1	7.9	8.0	8.1	7.9	8.0	8.1	7.8	8.0
20	---	---	---	8.1	7.9	8.0	8.0	7.9	8.0	8.1	7.8	8.0
21	---	---	---	8.1	7.9	---	8.1	7.9	8.0	8.2	7.8	7.9
22	---	---	---	8.0	7.9	8.0	8.1	8.0	8.0	8.0	7.8	7.9
23	---	---	---	8.1	7.9	8.0	8.1	8.0	8.0	8.0	7.8	7.9
24	---	---	---	8.0	7.9	8.0	8.2	8.0	8.1	8.0	7.8	7.9
25	---	---	---	8.1	7.9	8.0	8.2	8.0	8.1	8.1	7.8	7.9
26	---	---	---	8.0	7.9	8.0	8.1	8.0	8.1	8.1	7.8	7.9
27	---	---	---	8.0	7.9	7.9	8.1	8.0	8.1	8.2	7.8	8.0
28	---	---	---	8.0	7.9	7.9	8.2	8.0	8.1	8.2	7.8	8.0
29	---	---	---	8.1	7.9	8.0	8.1	8.0	8.0	8.1	7.9	8.0
30	---	---	---	8.1	7.9	8.0	8.2	8.0	8.1	8.2	7.9	8.0
31	---	---	---	---	---	---	8.1	8.0	8.0	8.2	7.9	8.0
MAX	---	---	---	---	---	---	8.3	8.0	8.1	8.2	8.0	8.1
MIN	---	---	---	---	---	---	8.0	7.9	7.9	8.0	7.8	7.9
	FEBRUARY			MARCH			APRIL			MAY
1	8.2	7.8	7.9	8.2	7.8	8.0	8.7	8.0	8.2	8.6	8.0	8.2
2	8.0	7.8	8.0	8.2	7.8	8.0	8.9	8.0	8.3	8.7	7.9	8.2
3	8.0	7.8	8.0	8.3	7.8	8.0	8.7	8.0	8.2	8.8	7.9	8.2
4	8.0	7.8	7.9	8.3	7.8	8.1	8.9	7.9	8.2	8.8	7.9	8.1
5	7.9	7.7	7.8	8.2	7.9	8.0	8.8	7.9	8.2	8.7	7.8	8.1
6	8.0	7.8	7.9	8.2	7.9	8.0	9.0	7.9	8.3	8.9	7.9	8.2
7	8.0	7.7	7.8	8.2	7.8	7.9	9.0	7.9	8.3	8.9	7.8	8.2
8	8.0	7.8	7.9	8.3	7.8	8.0	9.2	7.9	8.1	9.0	7.8	8.3
9	8.1	7.8	8.0	8.5	7.8	8.0	8.7	8.0	8.2	8.2	7.8	8.0
10	8.1	7.8	8.0	8.4	7.8	8.0	8.8	8.0	8.2	8.2	7.8	8.0
11	8.1	7.9	8.0	8.4	7.8	8.0	8.8	8.0	8.3	8.9	7.9	8.1
12	8.1	7.8	7.9	8.4	7.8	8.0	9.0	7.9	8.2	9.0	7.8	8.2
13	8.2	7.8	8.0	8.4	7.8	8.0	9.1	7.9	8.2	9.0	7.8	8.2
14	8.3	7.9	8.0	8.4	7.8	8.0	8.8	7.8	8.2	9.0	7.8	8.3
15	8.1	7.8	8.0	8.3	7.8	8.0	8.9	7.8	8.0	8.8	7.8	8.1
16	8.1	7.8	7.9	8.4	7.8	8.0	8.7	7.9	8.0	9.0	7.8	8.2
17	8.3	7.8	8.0	8.7	7.8	---	8.8	7.9	8.1	8.9	7.8	8.2
18	8.3	7.8	8.0	---	---	---	8.9	7.9	8.2	8.8	7.8	8.0
19	8.4	7.9	8.0	---	---	---	8.1	7.8	7.9	8.3	7.8	8.0
20	8.4	7.9	8.1	---	---	---	8.9	7.9	8.1	8.9	7.9	8.1
21	8.4	7.8	8.1	---	---	---	8.9	7.8	8.0	8.9	7.8	8.1
22	8.4	7.8	8.1	8.2	8.0	8.1	8.7	7.9	8.1	8.9	7.8	8.1
23	8.4	7.9	8.1	8.2	7.9	8.0	8.5	7.9	8.0	8.6	7.7	8.0
24	8.2	7.8	8.0	8.2	7.9	8.0	8.2	7.7	7.9	8.9	7.8	8.1
25	8.2	7.8	8.0	8.3	8.1	8.2	8.8	7.9	8.1	8.8	7.9	8.0
26	8.1	7.9	8.0	8.4	8.1	8.2	8.8	7.8	8.1	8.8	7.9	8.1
27	8.1	7.8	8.0	8.4	8.2	8.2	8.9	7.8	8.1	8.8	7.9	8.0
28	8.1	7.8	7.9	8.4	8.2	8.2	9.0	7.8	8.0	8.8	7.8	8.1
29	---	---	---	8.5	8.1	8.2	8.7	7.9	8.0	8.9	7.8	8.0
30	---	---	---	8.5	8.1	8.2	8.4	8.0	8.1	8.6	7.8	8.0
31	---	---	---	8.6	8.1	8.2	---	---	---	8.6	7.8	7.9
MAX	8.4	7.9	8.1	---	---	---	9.2	8.0	8.3	9.0	8.0	8.3
MIN	7.9	7.7	7.8	---	---	---	8.1	7.7	7.9	8.2	7.7	7.9
	JUNE			JULY			AUGUST			SEPTEMBER
1	8.6	7.8	8.0	8.9	7.6	8.0	8.1	7.6	7.7	8.5	7.7	7.9
2	8.8	7.8	8.0	9.2	7.8	8.2	8.0	7.5	7.6	8.5	7.7	7.8
3	8.8	7.8	8.0	9.2	7.8	8.2	7.9	7.4	7.5	8.3	7.6	7.8
4	8.3	7.8	7.9	8.9	7.6	8.2	8.5	7.6	7.8	8.6	7.7	7.9
5	8.4	7.7	8.0	8.8	7.7	8.2	8.4	7.6	7.8	8.7	7.7	7.8
6	9.1	7.7	8.0	9.1	7.7	8.1	8.1	7.5	7.6	8.2	7.7	7.8
7	8.7	7.8	8.0	8.8	7.8	8.1	8.5	7.7	7.9	8.1	7.7	7.7
8	8.6	7.7	8.1	8.8	7.7	8.3	8.7	7.7	7.9	8.3	7.7	7.8
9	9.0	7.8	8.1	8.9	7.7	8.3	8.3	7.6	7.9	8.3	7.7	7.9
10	9.2	7.8	8.1	8.9	7.7	8.3	9.0	7.6	8.1	8.6	7.8	8.0
11	9.1	7.8	8.1	8.3	7.6	7.9	9.2	7.7	8.0	8.6	7.7	7.9
12	9.1	7.8	8.2	8.2	7.7	7.8	9.0	7.7	8.2	8.4	7.7	7.9
13	9.0	7.8	8.1	8.3	7.7	7.8	9.2	7.6	8.2	7.9	7.6	7.7
14	9.2	7.8	8.4	8.2	7.6	7.8	9.3	7.6	8.3	8.0	7.7	7.8
15	9.4	7.7	8.2	8.7	7.8	8.1	9.3	7.6	8.4	8.0	7.7	7.8
16	9.2	7.8	8.3	8.7	7.7	8.0	8.5	7.5	8.1	8.1	7.7	7.8
17	9.1	7.7	8.2	8.7	7.7	8.1	8.5	7.6	8.2	8.1	7.6	7.8
18	8.9	7.8	8.0	8.7	7.5	7.9	8.5	7.6	8.0	8.0	7.6	7.8
19	8.8	7.8	8.0	8.3	7.4	7.6	8.2	7.6	7.8	8.0	7.7	7.8
20	8.5	7.7	8.1	8.1	7.5	7.6	8.3	7.6	8.0	8.0	7.7	7.8
21	9.1	7.8	8.2	8.2	7.4	7.6	8.2	7.6	7.9	8.0	7.7	7.8
22	9.1	7.8	8.1	8.4	7.5	7.7	8.3	7.6	7.8	8.0	7.7	7.8
23	9.2	7.8	8.1	8.2	7.5	7.7	8.3	7.6	7.7	8.0	7.7	7.8
24	8.3	7.7	7.9	8.0	7.4	7.6	8.2	7.6	7.7	8.3	7.7	8.0
25	9.0	7.8	8.1	7.6	7.3	7.4	8.3	7.6	7.8	8.5	7.7	8.0
26	9.0	7.7	8.2	7.6	7.3	7.4	8.7	7.6	8.1	8.7	7.8	8.2
27	9.0	7.7	8.2	8.1	7.6	7.7	8.6	7.6	7.9	8.8	7.7	8.1
28	9.1	7.7	8.1	8.1	7.6	7.6	8.8	7.6	7.9	8.8	7.7	8.0
29	9.1	7.8	8.2	8.0	7.6	7.7	8.7	7.6	7.9	8.9	7.7	8.0
30	9.1	7.7	8.3	8.1	7.6	7.8	8.1	7.6	7.7	8.9	7.8	8.1
31	---	---	---	8.2	7.6	7.7	8.3	7.7	7.8	---	---	---
MAX	9.4	7.8	8.4	9.2	7.8	8.3	9.3	7.7	8.4	8.9	7.8	8.2
MIN	8.3	7.7	7.9	7.6	7.3	7.4	7.9	7.4	7.5	7.9	7.6	7.7

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	---	---	---	---	---	---	1,260	1,140	1,200	1,000	812	895
2	---	---	---	---	---	---	1,220	1,120	1,170	1,060	841	965
3	---	---	---	---	---	---	1,210	1,100	1,170	1,000	870	955
4	---	---	---	---	---	---	1,200	1,100	1,160	1,000	870	959
5	---	---	---	1,120	---	---	1,190	1,090	1,160	965	854	929
6	---	---	---	1,140	949	1,060	1,200	1,090	1,160	1,040	879	953
7	---	---	---	1,180	963	1,110	1,200	1,100	1,160	1,070	978	1,050
8	---	---	---	1,180	1,050	1,130	1,200	1,100	1,160	1,080	996	1,060
9	---	---	---	1,220	1,060	1,150	1,200	1,090	1,150	1,120	1,030	1,080
10	---	---	---	1,210	1,090	1,160	1,910	1,050	1,150	1,160	1,040	1,110
11	---	---	---	1,210	1,110	1,160	1,240	1,050	1,130	1,160	1,070	1,140
12	---	---	---	1,230	1,110	1,170	1,780	1,040	1,140	1,180	1,090	1,140
13	---	---	---	1,340	1,110	1,190	1,690	1,040	1,100	1,130	1,060	1,100
14	---	---	---	1,470	1,200	1,350	1,210	1,040	1,140	1,120	1,040	1,100
15	---	---	---	1,370	1,180	1,280	1,210	1,100	1,160	1,130	1,050	1,090
16	---	---	---	1,320	1,150	1,230	1,200	1,070	1,130	1,150	1,050	1,100
17	---	---	---	1,220	1,120	1,180	1,290	1,060	1,150	1,180	1,060	1,140
18	---	---	---	1,220	1,110	1,170	1,130	1,040	1,090	1,190	1,090	1,150
19	---	---	---	1,230	1,120	1,180	1,140	1,080	1,130	1,190	1,090	1,150
20	---	---	---	1,220	1,120	1,180	1,160	1,090	1,130	1,200	1,090	1,160
21	---	---	---	1,230	1,130	1,190	1,170	1,080	1,140	1,790	1,050	1,170
22	---	---	---	1,220	1,130	1,190	1,140	1,070	1,110	1,190	1,050	1,090
23	---	---	---	1,200	1,110	1,160	1,120	1,020	1,080	1,250	1,160	1,190
24	---	---	---	1,600	1,110	1,230	1,040	927	1,000	1,250	1,110	1,180
25	---	---	---	1,860	1,240	1,440	958	849	908	1,210	1,100	1,160
26	---	---	---	1,740	1,440	1,540	929	849	900	1,170	1,090	1,140
27	---	---	---	1,620	1,380	1,500	947	849	901	1,200	1,070	1,130
28	---	---	---	1,600	1,360	1,480	924	828	893	1,200	979	1,100
29	---	---	---	1,440	1,220	1,300	929	835	883	1,020	976	998
30	---	---	---	1,300	1,170	1,230	927	802	875	1,000	941	984
31	---	---	---	---	---	---	929	813	870	1,020	988	1,000
MONTH	---	---	---	---	---	---	1,910	802	1,080	1,790	812	1,080
	FEBRUARY			MARCH			APRIL			MAY
1	1,110	1,000	1,060	2,100	1,480	1,780	873	749	791	478	448	465
2	1,660	1,110	1,180	2,290	1,480	1,750	884	776	824	485	458	472
3	2,460	1,130	1,570	2,140	1,440	1,680	909	789	845	490	443	470
4	2,140	1,700	1,840	1,860	1,460	1,650	827	737	785	499	452	473
5	1,970	1,430	1,660	2,350	1,380	1,750	805	731	769	556	459	499
6	1,930	1,380	1,600	2,260	1,520	1,940	888	733	786	580	515	553
7	2,290	1,450	1,760	2,400	1,460	1,760	780	687	739	587	539	572
8	2,250	1,540	1,910	1,940	1,320	1,570	788	606	707	635	546	581
9	1,930	1,410	1,670	1,620	1,210	1,360	634	579	604	649	429	603
10	1,740	1,280	1,500	1,440	1,180	1,290	613	571	592	596	405	474
11	1,570	1,240	1,390	1,390	1,170	1,280	776	569	632	573	481	537
12	1,460	1,200	1,310	1,360	1,150	1,250	716	589	637	515	477	497
13	1,390	1,150	1,260	1,330	1,140	1,230	671	568	603	514	476	495
14	1,560	1,090	1,230	1,320	1,100	1,200	612	529	579	848	472	562
15	1,400	1,100	1,230	1,270	1,090	1,180	881	527	581	941	581	698
16	1,350	1,120	1,230	1,220	1,070	1,140	758	498	556	721	531	625
17	1,330	1,070	1,200	1,560	635	1,110	535	485	505	531	452	487
18	1,270	1,040	1,130	---	---	---	664	490	521	497	438	470
19	1,160	1,020	1,080	---	---	---	593	367	489	493	432	463
20	1,290	1,020	1,130	---	---	---	527	484	512	495	446	469
21	1,290	1,080	1,180	---	599	---	535	473	505	524	437	466
22	1,250	1,070	1,150	773	590	671	523	478	499	768	445	498
23	2,160	1,070	1,300	732	493	616	654	438	505	613	514	537
24	1,650	1,160	1,350	844	521	703	557	332	447	630	459	545
25	1,750	1,140	1,290	705	568	636	564	512	545	487	409	440
26	2,830	1,150	1,730	655	552	610	563	531	547	451	410	432
27	2,580	1,660	2,070	725	565	662	544	495	526	457	408	430
28	2,530	1,700	2,030	765	668	708	534	476	508	453	403	425
29	---	---	---	766	683	731	516	469	488	458	396	422
30	---	---	---	833	666	726	511	462	483	433	394	412
31	---	---	---	868	685	731	---	---	---	456	388	412
MONTH	2,830	1,000	1,430	---	---	---	909	332	604	941	388	499
	JUNE			JULY			AUGUST			SEPTEMBER
1	628	369	443	712	435	537	600	459	495	479	445	462
2	444	381	399	447	383	412	607	548	581	484	403	460
3	456	378	404	532	396	431	824	607	724	642	412	500
4	509	413	448	632	511	584	911	421	562	480	435	454
5	738	433	510	683	567	628	565	401	440	496	443	472
6	564	402	479	625	455	557	705	565	665	552	433	469
7	520	375	425	576	405	457	659	464	517	569	460	525
8	624	459	558	679	559	637	581	469	510	559	512	539
9	721	519	620	693	582	644	703	581	669	533	450	504
10	730	420	493	676	598	639	711	586	673	467	439	451
11	622	406	451	886	622	773	605	417	497	535	434	464
12	511	400	433	983	828	905	515	395	446	575	510	534
13	508	414	442	997	912	949	499	442	480	703	575	649
14	521	398	434	1,010	914	966	498	433	477	721	654	692
15	633	443	571	914	468	579	543	436	482	778	655	714
16	467	413	444	599	496	535	690	543	643	748	690	721
17	553	388	433	561	475	520	732	674	703	777	700	734
18	553	323	391	539	185	495	1,190	532	728	889	705	788
19	510	335	410	510	323	473	709	526	657	862	785	809
20	670	510	607	545	460	487	776	679	719	867	798	816
21	698	432	480	548	506	529	705	654	686	848	786	807
22	477	411	443	531	471	498	689	664	676	841	815	826
23	477	415	445	574	463	500	689	652	667	842	809	822
24	485	406	435	540	470	493	723	618	650	851	646	749
25	494	405	442	880	540	660	736	622	645	685	606	665
26	523	453	490	725	667	700	736	480	546	636	515	545
27	538	451	485	834	490	655	507	461	489	577	514	544
28	515	453	489	628	448	472	513	446	490	583	517	548
29	600	459	518	590	331	456	520	330	445	583	516	552
30	516	440	484	494	408	437	512	140	377	637	516	562
31	---	---	---	498	459	481	552	296	461	---	---	---
MONTH	738	323	470	1,010	185	584	1,190	140	574	889	403	613

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	---	---	---	---	---	---	7.2	2.9	5.0	4.8	2.8	3.7
2	---	---	---	6.3	3.2	4.5	7.6	3.6	5.4	4.4	0.9	2.8
3	---	---	---	8.3	4.1	5.7	5.7	4.1	4.8	5.7	2.7	4.2
4	---	---	---	7.0	4.2	5.3	5.3	3.5	4.6	5.3	3.7	4.5
5	---	---	---	8.4	3.9	5.8	6.8	3.1	4.5	5.6	3.6	4.8
6	---	---	---	10.1	4.7	7.1	6.1	2.1	3.9	7.3	4.4	5.7
7	---	---	---	8.5	5.2	6.9	5.3	2.0	3.5	7.2	3.4	5.1
8	---	---	---	10.5	5.3	7.7	4.7	2.1	3.2	7.5	3.0	5.1
9	---	---	---	9.2	6.6	7.9	5.3	1.3	3.1	5.6	2.6	4.0
10	---	---	---	7.4	5.0	6.2	5.3	1.1	3.1	3.5	1.1	2.2
11	---	---	---	7.3	4.1	5.5	4.9	1.6	3.2	3.5	0.8	2.0
12	---	---	---	7.7	2.7	5.1	4.9	1.1	3.1	4.8	0.4	2.5
13	---	---	---	8.3	4.8	6.6	6.1	2.0	3.7	5.7	1.8	3.5
14	---	---	---	9.3	5.9	7.4	5.3	2.3	3.7	6.5	2.5	4.3
15	---	---	---	7.5	4.9	6.5	4.9	2.4	3.6	5.7	2.2	3.9
16	---	---	---	7.5	3.3	5.2	5.3	1.8	3.4	4.7	1.0	2.8
17	---	---	---	8.8	4.3	6.5	4.8	2.3	3.5	5.5	1.8	3.2
18	---	---	---	9.2	5.3	7.1	4.9	2.4	3.6	4.9	0.8	2.6
19	---	---	---	9.0	4.9	6.8	4.3	1.2	2.6	5.9	1.4	3.5
20	---	---	---	9.4	4.9	7.0	3.4	0.4	1.8	5.9	2.1	4.0
21	---	---	---	9.6	5.1	6.9	4.0	1.1	2.3	4.7	2.1	3.5
22	---	---	---	8.8	5.3	7.0	3.9	0.7	2.0	3.7	0.9	2.1
23	---	---	---	8.9	5.7	7.0	3.0	0.8	1.7	4.7	0.3	2.2
24	---	---	---	5.7	3.4	4.3	2.6	0.1	1.2	5.5	2.2	3.5
25	---	---	---	5.4	2.2	3.6	3.0	0.2	1.3	5.8	2.2	3.8
26	---	---	---	4.9	1.0	2.7	2.2	0.0	0.9	7.0	2.1	4.4
27	---	---	---	4.9	1.5	3.0	2.9	0.5	1.7	9.2	4.8	6.7
28	---	---	---	6.8	1.9	4.1	5.2	1.7	3.3	6.7	3.7	5.3
29	---	---	---	7.9	3.3	5.3	6.0	2.7	4.2	6.8	2.1	4.3
30	---	---	---	6.9	3.3	4.9	5.4	2.5	4.0	5.9	3.0	4.5
31	---	---	---	---	---	---	4.5	1.8	3.2	7.2	3.3	5.3
MONTH	---	---	---	---	---	---	7.6	0.0	3.2	9.2	0.3	3.9
	FEBRUARY			MARCH			APRIL			MAY
1	9.7	4.7	6.9	5.9	1.8	3.7	13.0	7.0	10.3	14.0	10.1	11.7
2	7.3	2.7	5.6	8.7	1.9	4.9	13.3	7.8	10.7	14.2	9.6	11.7
3	5.4	2.1	3.3	10.1	3.7	6.3	13.0	7.6	10.4	15.6	10.2	12.6
4	4.3	0.8	2.5	5.9	2.0	3.6	12.7	6.7	9.5	13.8	10.5	11.8
5	4.0	1.2	2.5	7.5	0.8	3.8	10.0	6.5	8.5	15.0	9.4	12.0
6	2.3	0.1	1.2	9.6	2.9	6.0	10.3	6.0	7.9	16.3	10.4	13.0
7	2.7	0.0	0.8	11.6	4.2	7.6	8.9	6.1	7.5	15.0	10.0	12.5
8	4.3	0.0	1.4	13.2	5.4	8.8	13.1	4.9	8.2	15.4	10.2	12.6
9	4.3	0.8	1.9	13.5	5.9	9.4	13.9	6.5	9.6	13.1	7.2	10.2
10	5.6	0.2	2.5	13.0	6.2	9.5	14.3	7.3	10.2	9.0	5.1	6.9
11	4.1	0.7	2.4	14.5	6.9	10.5	14.0	7.7	10.7	15.8	7.6	11.1
12	6.4	0.7	3.4	13.6	7.7	10.5	15.3	8.1	11.4	17.3	9.1	12.6
13	7.2	3.1	5.0	15.6	7.1	11.1	15.9	8.1	11.2	16.6	10.0	13.0
14	8.5	4.3	6.2	15.4	8.0	11.7	12.6	8.5	10.2	18.7	10.6	14.4
15	5.7	4.3	4.9	16.6	9.5	12.7	11.1	8.4	9.7	16.4	11.8	13.9
16	6.3	2.7	4.5	13.9	9.3	11.6	13.3	8.2	10.2	20.1	12.2	15.8
17	8.8	3.0	5.5	11.4	7.9	9.8	12.9	8.2	10.1	18.2	12.2	15.1
18	7.6	3.9	5.5	---	---	---	12.9	8.6	10.2	16.0	12.4	14.3
19	9.4	3.4	6.0	---	---	---	9.5	8.6	9.0	13.8	11.3	12.0
20	8.2	2.7	5.4	---	---	---	14.3	7.8	10.5	16.8	11.1	13.1
21	8.7	3.5	5.9	5.7	---	---	14.1	8.3	10.7	19.4	11.4	14.7
22	7.2	3.6	5.5	7.8	1.9	4.5	13.3	9.5	10.9	19.6	12.1	15.5
23	6.0	1.3	3.3	9.8	3.3	5.9	11.0	7.0	9.6	20.3	13.5	16.6
24	4.4	0.1	1.6	5.7	4.5	5.0	9.8	6.1	7.7	17.4	14.7	15.9
25	4.4	0.1	1.8	10.8	4.5	7.0	14.7	7.9	10.7	17.3	13.4	15.1
26	5.1	0.5	2.7	10.9	5.0	7.7	15.8	8.7	11.7	18.3	13.2	15.3
27	4.6	2.6	3.4	7.4	4.5	5.8	15.4	9.2	11.7	20.1	13.8	16.3
28	5.0	2.6	3.7	8.2	3.8	5.7	15.7	9.7	11.9	20.4	14.2	16.8
29	---	---	---	9.0	3.3	6.0	14.9	10.3	11.9	20.7	14.1	16.8
30	---	---	---	11.6	3.9	7.5	13.2	10.5	11.4	19.1	15.1	16.8
31	---	---	---	12.8	5.6	8.9	---	---	---	18.8	15.4	16.8
MONTH	9.7	0.0	3.8	---	---	---	15.9	4.9	10.1	20.7	5.1	13.8
	JUNE			JULY			AUGUST			SEPTEMBER
1	18.8	15.0	16.5	24.3	18.5	21.4	25.6	19.8	22.4	24.5	18.0	20.9
2	21.0	14.9	17.4	25.5	17.4	21.2	26.5	19.1	22.7	24.4	18.3	21.0
3	20.6	14.8	17.3	25.2	17.4	21.3	25.7	20.5	23.0	21.6	18.3	19.9
4	16.6	14.4	15.4	25.3	19.1	22.4	27.0	19.9	23.4	24.3	17.7	20.6
5	16.6	13.4	14.7	24.0	19.7	22.4	26.6	20.7	23.4	24.6	17.9	20.8
6	19.5	14.0	16.6	23.0	18.0	20.9	26.3	19.8	23.1	21.2	18.9	19.9
7	19.2	13.4	16.0	22.2	17.7	20.3	24.2	19.9	22.5	19.8	17.8	18.7
8	20.7	13.5	17.1	25.1	18.2	21.8	25.5	19.9	22.4	22.7	16.6	19.6
9	20.3	15.4	17.9	25.2	20.1	22.9	25.7	19.9	23.1	20.4	17.0	18.6
10	21.4	14.8	17.7	25.1	19.8	22.7	27.3	20.7	24.2	21.2	16.8	18.3
11	21.7	15.5	18.2	26.3	19.9	23.0	26.4	20.4	23.7	20.7	16.0	18.0
12	20.3	15.2	17.6	28.0	20.2	23.8	27.8	20.2	23.6	21.0	14.3	17.7
13	19.2	15.8	17.2	27.9	20.4	24.2	27.4	19.4	23.4	18.3	12.9	14.9
14	21.9	15.5	18.6	27.5	20.2	23.7	26.6	18.5	22.7	17.4	11.2	14.3
15	23.7	16.1	19.8	23.7	19.3	21.7	26.3	18.6	22.6	18.9	13.2	16.3
16	22.5	15.8	19.0	23.8	18.9	21.7	26.2	19.5	22.7	19.3	14.8	17.4
17	21.0	16.3	18.5	26.4	18.8	22.7	23.4	19.2	21.5	20.0	15.6	17.4
18	19.8	16.1	17.8	26.5	19.7	23.3	23.2	17.6	20.6	17.7	12.7	15.1
19	20.4	15.9	18.1	26.8	20.0	23.2	23.6	17.1	20.1	18.2	12.1	15.0
20	20.2	16.0	18.3	25.4	19.9	22.7	25.8	19.1	22.1	18.4	13.5	15.6
21	23.3	15.6	19.1	25.6	19.5	22.9	24.8	19.9	22.3	19.2	13.4	16.0
22	23.5	16.2	19.5	27.0	19.6	23.2	25.3	19.4	21.8	19.3	13.4	16.1
23	23.6	16.5	19.7	26.2	20.0	23.3	25.3	18.7	21.6	20.1	13.8	16.6
24	19.3	16.5	17.7	27.8	19.5	23.6	25.3	18.9	21.9	18.5	14.3	16.5
25	21.8	16.0	18.5	25.1	21.6	23.2	24.5	19.8	22.0	18.5	13.4	16.2
26	23.3	15.6	19.4	27.6	20.3	23.6	24.9	19.3	22.4	19.3	13.1	16.6
27	24.1	15.8	20.0	26.3	21.6	23.6	24.7	18.9	22.0	18.7	12.8	16.1
28	22.9	16.4	19.9	25.6	20.2	22.5	24.3	19.9	22.1	18.3	12.4	15.7
29	22.6	16.7	19.6	23.6	19.2	21.3	24.5	18.9	21.6	17.4	12.4	15.3
30	24.8	16.6	20.7	25.8	19.8	22.5	20.9	18.0	19.2	16.0	12.0	13.9
31	---	---	---	25.4	19.4	22.3	21.0	17.0	18.8	---	---	---
MONTH	24.8	13.4	18.1	28.0	17.4	22.6	27.8	17.0	22.2	24.6	11.2	17.3