07130500 ARKANSAS RIVER BELOW JOHN MARTIN RESERVOIR, CO-Continued

ARKANSAS RIVER BASIN

07130500 ARKANSAS RIVER BELOW JOHN MARTIN RESERVOIR, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--August 1942 to August 1943, October 1945 to July 1949, January 1951 to September 1981, 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=07130500

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: October 1964 to September 1981 (observer once-daily measurements), December 1985 to current year.

WATER TEMPERATURE: January 1951 to September 1981 (observer once-daily measurements), December 1985 to current year.

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

REMARKS.--Daily specific-conductance records are fair. Daily water-temperature records are good. Daily data that are not published are either missing or of unacceptable quality.

EXTREMES FOR PERIOD OF RECORD (1985 to current year).--

SPECIFIC CONDUCTANCE: Maximum, 3,540 microsiemens/cm, Feb. 26, 1986; minimum, 1,060 microsiemens/cm, on many days in 1995.

WATER TEMPERATURE: Maximum, 28.1°C, June 11, 2001; minimum, 0.0°C, on many days.

EXTREMES FOR CURRENT YEAR.--

SPECIFIC CONDUCTANCE: Maximum, 2,880 microsiemens/cm, Apr. 14; minimum, 1,550 microsiemens/cm, July 10-11.

WATER TEMPERATURE: Maximum, 26.6°C, July 20, Aug. 10; minimum, 0.6°C, Feb. 25.

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

2,540

2,390

2,500

2,730

2,700

2,720

2,560

2,520

2,550

2,600

2,550

2,570

2

2,500

2,480

2,490

2,740

2,720

2,720

2,570

2,540

2,550

2,580

2,550

2,570

3

2,500

2,470

2,490

2,740

2,710

2,720

2,560

2,510

2,540

2,600

2,550

2,570

4

2,500

2,480

2,490

2,730

2,710

2,720

2,530

2,490

2,510

2,590

2,550

2,570

5

2,520

2,490

2,500

2,740

2,700

2,710

2,610

2,500

2,540

2,580

2,510

2,550

6

2,540

2,500

2,510

2,760

2,710

2,730

2,600

2,550

2,570

2,580

2,510

2,550

7

2,560

2,520

2,540

2,720

2,690

2,710

2,610

2,560

2,570

2,560

2,500

2,540

8

2,600

2,550

2,570

2,700

2,660

2,680

2,620

2,590

2,600

2,580

2,500

2,540

9

2,600

2,570

2,590

2,680

2,640

2,660

2,620

2,590

2,600

2,590

2,530

2,560

10

2,610

2,580

2,600

2,680

2,640

2,660

2,620

2,570

2,600

2,590

2,540

2,570

11

2,610

2,580

2,600

2,710

2,620

2,640

2,620

2,580

2,600

2,600

2,560

2,580

12

2,600

2,560

2,590

2,650

2,620

2,630

2,610

2,590

2,600

2,600

2,550

2,580

13

2,630

2,590

2,610

2,650

2,620

2,630

2,620

2,570

2,600

2,610

2,560

2,580

14

2,640

2,610

2,620

2,640

2,610

2,620

2,610

2,560

2,600

2,580

2,550

2,570

15

2,640

2,620

2,630

2,620

2,600

2,610

2,620

2,580

2,600

2,590

2,550

2,570

16

2,660

2,620

2,640

2,630

2,590

2,610

2,620

2,570

2,600

2,580

2,550

2,570

17

2,660

2,640

2,650

2,620

2,590

2,610

2,610

2,590

2,600

2,580

2,530

2,570

18

2,670

2,640

2,650

2,620

2,590

2,610

2,610

2,580

2,600

2,580

2,550

2,560

19

2,670

2,640

2,660

2,630

2,590

2,610

2,610

2,580

2,590

2,590

2,550

2,570

20

2,680

2,640

2,660

2,620

2,580

2,600

2,610

2,560

2,580

2,590

2,560

2,570

21

2,670

2,650

2,660

2,620

2,580

2,600

2,620

2,570

2,590

2,570

2,540

2,560

22

2,680

2,660

2,670

2,630

2,580

2,600

2,630

2,580

2,600

2,590

2,560

2,580

23

2,710

2,670

2,690

2,600

2,570

2,590

2,610

2,550

2,590

2,600

2,570

2,590

24

2,730

2,700

2,720

2,600

2,580

2,590

2,590

2,560

2,570

2,600

2,560

2,580

25

2,750

2,720

2,730

2,600

2,560

2,580

2,630

2,590

2,610

2,580

2,530

2,560

26

2,750

2,670

2,740

2,620

2,540

2,560

2,670

2,600

2,630

2,560

2,520

2,530

27

2,750

2,690

2,740

2,580

2,530

2,560

2,670

2,580

2,640

2,590

2,520

2,550

28

2,760

2,730

2,750

2,580

2,540

2,560

2,630

2,570

2,600

2,560

2,480

2,530

29

2,750

2,680

2,710

2,590

2,550

2,570

2,610

2,560

2,570

2,570

2,480

2,530

30

2,760

2,670

2,700

2,580

2,550

2,560

2,590

2,540

2,560

2,570

2,540

2,550

31

2,760

2,700

2,720

---

---

---

2,590

2,530

2,560

2,570

2,540

2,560

MONTH

2,760

2,390

2,630

2,760

2,530

2,630

2,670

2,490

2,580

2,610

2,480

2,560

FEBRUARY

MARCH

APRIL

MAY

1

2,600

2,550

2,560

2,500

2,450

2,470

2,520

2,490

2,510

2,850

2,840

2,850

2

2,570

2,530

2,550

2,500

2,470

2,480

2,500

2,470

2,490

2,850

2,830

2,830

3

2,540

2,510

2,530

2,500

2,470

2,490

2,520

2,500

2,510

2,830

2,810

2,820

4

2,560

2,500

2,520

2,490

2,470

2,480

2,520

2,490

2,500

2,820

2,810

2,820

5

2,560

2,520

2,540

2,510

2,470

2,480

2,500

2,480

2,490

2,820

2,810

2,810

6

2,540

2,510

2,520

2,530

2,480

2,500

2,490

2,470

2,480

2,810

2,800

2,810

7

2,570

2,520

2,540

2,550

2,480

2,510

2,480

2,470

2,470

2,820

2,810

2,810

8

2,600

2,520

2,560

2,530

2,490

2,510

2,490

2,450

2,470

2,810

2,800

2,810

9

2,570

2,510

2,540

2,520

2,490

2,510

2,500

2,460

2,480

2,810

2,810

2,810

10

2,570

2,500

2,540

2,540

2,500

2,520

2,490

2,460

2,470

2,810

2,800

2,800

11

2,570

2,480

2,510

2,540

2,500

2,520

2,600

2,450

2,510

2,800

2,800

2,800

12

2,550

2,480

2,520

2,520

2,490

2,510

2,720

2,600

2,680

2,800

2,800

2,800

13

2,530

2,450

2,500

2,510

2,490

2,500

2,810

2,720

2,770

2,800

2,790

2,790

14

2,540

2,490

2,520

2,500

2,470

2,490

2,880

2,810

2,840

2,790

2,790

2,790

15

2,530

2,520

2,520

2,500

2,460

2,480

---

---

---

2,810

2,790

2,790

16

2,550

2,510

2,530

2,490

2,460

2,470

---

---

---

2,800

2,790

2,790

17

2,550

2,520

2,530

2,500

2,470

2,480

---

---

---

2,820

2,800

2,810

18

2,540

2,480

2,510

2,490

2,470

2,480

---

---

---

2,820

2,800

2,810

19

2,510

2,480

2,490

2,470

2,430

2,450

---

---

---

2,820

2,810

2,820

20

2,500

2,480

2,490

2,490

2,460

2,480

---

---

---

2,830

2,820

2,820

21

2,500

2,460

2,480

2,500

2,470

2,480

---

---

---

2,840

2,820

2,830

22

2,490

2,460

2,480

2,520

2,490

2,500

---

---

---

2,850

2,830

2,840

23

2,470

2,440

2,460

2,520

2,490

2,500

---

---

---

2,850

2,840

2,840

24

2,470

2,450

2,460

2,510

2,490

2,510

---

---

---

2,850

2,840

2,850

25

2,520

2,460

2,500

2,520

2,490

2,500

---

---

---

2,850

2,840

2,840

26

2,530

2,450

2,490

2,510

2,500

2,500

---

---

---

2,850

2,840

2,850

27

2,490

2,330

2,440

2,520

2,490

2,510

---

---

---

2,860

2,850

2,850

28

2,460

2,410

2,450

2,530

2,500

2,510

2,850

2,810

2,820

2,860

2,840

2,850

29

---

---

---

2,540

2,510

2,520

2,840

2,820

2,830

2,850

2,830

2,840

30

---

---

---

2,540

2,510

2,530

2,850

2,840

2,840

2,830

2,800

2,820

31

---

---

---

---

---

---

---

---

---

2,830

2,780

2,810

MONTH

2,600

2,330

2,510

---

---

---

---

---

---

2,860

2,780

2,820

JUNE

JULY

AUGUST

SEPTEMBER

1

2,840

2,750

2,770

1,750

1,730

1,740

1,660

1,640

1,650

1,770

1,750

1,760

2

2,840

2,830

2,840

1,740

1,730

1,730

1,670

1,650

1,660

1,770

1,760

1,770

3

2,840

2,800

2,820

1,750

1,730

1,740

1,670

1,660

1,660

1,780

1,760

1,770

4

2,830

2,790

2,810

1,750

1,610

1,640

1,670

1,660

1,660

1,790

1,770

1,780

5

2,800

2,690

2,750

1,630

1,600

1,620

1,670

1,660

1,660

1,790

1,770

1,780

6

2,720

2,650

2,690

1,600

1,590

1,590

1,670

1,660

1,660

1,790

1,780

1,790

7

2,730

2,560

2,630

1,600

1,580

1,590

1,670

1,660

1,670

1,790

1,780

1,780

8

2,640

2,580

2,610

1,600

1,560

1,580

1,680

1,660

1,670

1,790

1,780

1,780

9

2,590

2,530

2,550

1,580

1,560

1,570

1,680

1,670

1,680

1,790

1,740

1,770

10

2,560

2,490

2,530

1,570

1,550

1,550

1,680

1,670

1,680

1,760

1,720

1,750

11

2,490

2,400

2,420

1,570

1,550

1,560

1,680

1,650

1,670

1,730

1,700

1,710

12

2,420

2,320

2,370

1,580

1,560

1,570

1,660

1,630

1,640

1,700

1,680

1,690

13

2,350

2,300

2,330

1,590

1,580

1,580

1,630

1,600

1,620

1,690

1,670

1,680

14

2,310

2,270

2,290

1,600

1,580

1,590

1,600

1,560

1,590

1,680

1,660

1,670

15

2,270

2,260

2,260

1,600

1,590

1,590

1,580

1,560

1,570

1,680

1,660

1,670

16

2,270

2,260

2,260

1,610

1,590

1,600

1,600

1,570

1,580

1,690

1,660

1,680

17

2,260

2,230

2,240

1,610

1,600

1,600

1,610

1,590

1,600

1,690

1,670

1,680

18

2,240

2,100

2,170

1,620

1,610

1,610

1,630

1,600

1,610

1,680

1,670

1,680

19

2,190

2,130

2,160

1,630

1,610

1,620

1,660

1,620

1,640

1,690

1,660

1,670

20

2,190

2,120

2,160

1,630

1,620

1,630

1,680

1,650

1,670

1,680

1,660

1,670

21

2,120

1,970

2,040

1,640

1,630

1,630

1,700

1,670

1,680

1,680

1,660

1,670

22

1,970

1,840

1,880

1,640

1,630

1,630

1,710

1,690

1,700

1,680

1,660

1,670

23

1,850

1,830

1,840

1,640

1,620

1,630

1,720

1,710

1,710

1,680

1,660

1,670

24

1,850

1,720

1,780

1,640

1,620

1,630

1,730

1,710

1,720

1,670

1,660

1,670

25

1,750

1,730

1,740

1,640

1,620

1,630

1,740

1,720

1,730

1,680

1,670

1,670

26

1,760

1,740

1,750

1,640

1,630

1,630

1,750

1,730

1,740

1,680

1,660

1,670

27

1,770

1,760

1,760

1,640

1,630

1,640

1,760

1,730

1,750

1,680

1,660

1,670

28

1,770

1,760

1,760

1,640

1,640

1,640

1,760

1,740

1,750

1,680

1,660

1,670

29

1,770

1,750

1,760

1,650

1,640

1,640

1,760

1,750

1,750

1,670

1,650

1,660

30

1,760

1,740

1,750

1,640

1,640

1,640

1,760

1,750

1,750

1,670

1,650

1,650

31

---

---

---

1,650

1,640

1,640

1,770

1,750

1,760

---

---

---

MONTH

2,840

1,720

2,260

1,750

1,550

1,620

1,770

1,560

1,670

1,790

1,650

1,710

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

19.0

16.4

17.3

5.7

4.7

5.3

4.9

2.1

3.6

3.4

2.3

2.8

2

16.8

15.5

16.1

6.7

5.0

5.9

5.4

2.3

3.9

3.9

2.4

3.0

3

17.2

15.1

15.8

8.5

5.3

6.6

4.6

1.8

3.3

3.9

2.4

3.4

4

18.0

14.6

15.6

8.4

5.1

6.6

4.0

1.3

2.5

4.3

3.1

3.8

5

17.8

14.2

15.4

8.6

5.3

6.7

5.0

2.5

3.8

4.4

2.6

3.6

6

17.1

13.9

15.0

9.9

4.9

6.8

5.2

2.4

3.9

5.2

3.6

4.4

7

17.3

13.5

14.9

10.9

5.0

7.5

4.7

2.1

3.6

5.6

2.9

4.5

8

16.0

13.6

14.6

9.8

6.2

7.7

4.7

2.8

3.9

6.1

3.0

4.4

9

16.4

14.3

14.9

11.2

7.1

8.6

4.9

2.9

3.8

5.2

3.7

4.5

10

16.6

14.1

14.8

10.9

7.1

8.6

5.0

1.8

3.3

4.2

2.7

3.5

11

17.5

13.9

15.1

9.2

6.0

7.5

4.2

2.3

3.5

3.8

2.0

3.1

12

15.7

13.8

14.4

9.4

5.5

7.1

4.2

2.7

3.5

4.7

2.6

3.6

13

15.5

13.1

14.0

8.4

5.2

6.8

4.9

1.9

3.5

5.1

2.8

4.0

14

15.3

12.7

13.7

8.8

6.5

7.5

6.6

2.1

3.8

4.5

2.8

3.9

15

15.0

12.2

13.3

8.6

6.7

7.4

4.8

2.1

3.6

4.4

2.7

3.7

16

14.9

12.1

13.2

8.7

5.1

6.7

4.3

2.2

3.8

3.3

0.8

2.4

17

14.9

11.6

12.8

8.8

5.1

6.8

5.0

3.3

4.2

4.3

2.8

3.4

18

14.3

11.7

12.8

9.5

5.7

7.1

5.5

3.5

4.6

3.5

1.0

2.4

19

13.8

11.8

12.4

9.5

4.7

6.5

4.3

2.4

3.5

5.4

1.1

3.2

20

14.7

11.3

12.4

9.0

4.8

6.6

4.5

1.2

2.8

5.2

2.2

3.7

21

13.6

11.1

12.1

9.4

5.0

6.9

4.3

2.3

3.2

3.8

1.1

2.9

22

13.7

11.0

12.0

11.2

5.4

7.6

4.2

1.9

3.0

2.6

1.7

2.2

23

11.0

9.8

10.4

7.3

5.5

6.5

3.0

1.3

2.2

2.5

1.4

1.9

24

10.1

9.5

9.7

6.6

4.9

5.6

3.4

1.9

2.6

3.2

1.5

2.3

25

11.0

9.4

9.9

4.9

3.5

4.3

3.0

1.2

2.1

4.1

2.0

2.8

26

10.8

9.7

10.1

4.1

2.1

3.1

2.4

0.7

1.8

4.4

2.0

3.1

27

10.9

9.8

10.1

5.1

2.1

3.4

2.2

0.7

1.4

4.8

3.5

4.0

28

10.4

9.5

9.8

5.4

1.6

3.3

3.0

1.0

2.0

5.3

3.4

4.4

29

9.7

8.1

9.2

5.7

2.8

4.1

3.3

1.6

2.5

6.0

2.3

4.6

30

8.1

7.2

7.7

6.3

2.8

4.3

4.0

2.2

2.9

5.3

3.3

4.3

31

7.2

5.5

6.7

---

---

---

3.4

1.6

2.7

6.4

3.0

4.7

MONTH

19.0

5.5

12.8

11.2

1.6

6.3

6.6

0.7

3.2

6.4

0.8

3.5

FEBRUARY

MARCH

APRIL

MAY

1

8.9

4.4

5.8

7.6

3.4

5.2

19.5

10.0

14.0

14.7

13.0

13.8

2

7.4

4.9

5.8

7.8

4.5

5.9

16.2

11.5

13.6

14.8

13.4

14.0

3

6.0

3.6

4.6

7.6

3.7

5.9

15.9

10.3

12.9

15.0

13.7

14.2

4

5.6

2.7

4.0

6.8

2.9

4.6

18.4

11.0

13.7

15.3

13.7

14.5

5

5.1

3.5

4.3

6.1

1.1

3.4

12.8

10.5

11.6

15.3

14.1

14.7

6

4.7

2.2

3.4

7.6

2.8

5.0

12.0

8.8

10.3

15.3

14.4

14.7

7

4.1

1.7

2.7

11.1

4.1

7.1

11.0

9.3

10.2

15.6

14.3

14.9

8

3.8

1.5

2.7

13.1

5.3

7.7

16.2

8.4

11.7

16.2

14.9

15.4

9

4.1

2.2

2.9

8.4

5.6

7.0

18.3

9.2

13.1

16.0

15.0

15.4

10

4.8

2.2

3.4

9.7

5.5

7.5

17.1

10.5

13.8

15.8

15.1

15.4

11

4.8

2.0

3.5

13.8

6.0

9.4

14.9

10.9

12.7

15.9

14.9

15.3

12

5.8

2.2

4.1

12.2

7.0

9.4

12.5

10.1

11.2

15.6

14.5

14.9

13

5.6

3.6

4.7

13.7

7.6

10.6

12.8

10.0

11.2

15.3

14.3

14.8

14

6.2

3.7

5.0

15.1

8.4

11.1

12.0

10.1

11.0

16.1

14.5

15.2

15

5.4

4.4

4.9

16.1

8.5

11.8

13.5

10.0

11.4

16.1

14.8

15.3

16

6.6

3.6

5.0

14.6

9.8

12.0

13.5

12.2

12.6

16.3

15.3

15.7

17

8.8

4.4

6.4

13.2

9.6

11.3

13.8

12.3

12.9

18.8

15.5

16.8

18

6.7

5.5

6.0

12.4

10.2

11.4

14.0

12.3

13.0

18.5

16.1

17.2

19

8.1

5.0

6.1

11.2

8.3

9.6

12.7

12.1

12.4

18.0

16.1

16.8

20

9.5

4.8

6.8

10.4

7.4

8.8

13.1

11.8

12.4

18.2

16.1

16.9

21

8.0

4.2

6.2

9.7

8.7

9.1

13.8

12.3

12.9

18.9

15.7

17.2

22

10.3

5.3

7.2

15.0

7.7

10.6

13.6

12.5

12.9

20.1

16.2

17.7

23

6.3

3.8

4.9

16.0

9.0

11.9

13.7

12.6

13.1

19.6

16.6

18.0

24

3.8

1.4

2.4

14.8

10.2

12.4

12.8

12.0

12.3

20.0

17.2

18.2

25

2.8

0.6

1.8

17.5

11.2

13.8

13.3

11.9

12.4

18.8

17.2

17.7

26

4.3

2.0

3.1

16.3

11.0

13.0

13.2

11.7

12.3

19.3

17.0

17.9

27

6.4

2.9

4.3

11.8

9.0

10.8

13.9

11.7

12.8

18.7

17.3

18.0

28

4.5

3.4

3.9

9.8

7.0

8.6

13.6

12.4

12.8

19.1

18.0

18.5

29

---

---

---

11.8

6.7

9.1

14.4

12.4

13.3

20.4

18.2

19.1

30

---

---

---

13.8

7.3

10.4

14.3

13.0

13.5

20.7

18.8

19.5

31

---

---

---

15.9

8.8

10.9

---

---

---

21.1

20.4

20.6

MONTH

10.3

0.6

4.5

17.5

1.1

9.2

19.5

8.4

12.5

21.1

13.0

16.4

JUNE

JULY

AUGUST

SEPTEMBER

1

22.0

20.8

21.4

22.1

21.3

21.7

25.0

23.6

24.3

23.7

21.1

22.2

2

22.3

21.4

21.7

23.0

21.6

22.2

25.4

23.6

24.4

23.9

21.1

22.1

3

21.5

21.0

21.2

22.8

21.8

22.2

25.3

23.6

24.2

22.2

20.8

21.4

4

21.1

20.7

20.9

24.8

21.8

23.6

25.6

23.5

24.4

22.8

20.5

21.4

5

20.7

20.1

20.5

24.6

22.9

23.7

26.0

23.7

24.7

23.4

20.0

21.2

6

20.1

19.4

19.9

25.1

23.4

24.1

25.5

23.9

24.5

22.1

20.2

21.0

7

19.5

18.6

19.1

24.9

23.8

24.1

25.7

23.7

24.6

21.2

20.2

20.4

8

19.8

19.2

19.5

25.5

23.5

24.3

26.3

24.0

24.9

22.1

20.0

20.9

9

19.9

19.0

19.4

25.2

23.2

24.1

26.3

24.0

25.0

22.4

20.6

21.4

10

19.7

18.9

19.2

25.6

23.6

24.4

26.6

23.8

24.8

21.9

20.4

21.2

11

20.3

19.4

19.8

25.7

23.4

24.4

25.8

23.8

24.7

21.5

20.4

20.9

12

20.6

19.5

19.9

25.2

23.1

24.1

25.3

23.8

24.4

21.9

20.0

20.7

13

20.6

19.8

20.1

25.7

23.6

24.4

25.1

23.7

24.3

20.2

18.3

19.3

14

20.7

20.0

20.3

25.3

23.3

24.2

24.8

23.6

24.0

20.1

17.5

18.5

15

21.2

20.1

20.5

25.2

23.4

24.2

24.4

22.6

23.4

20.3

16.8

18.1

16

21.0

20.2

20.6

25.3

23.5

24.3

23.6

21.6

22.4

19.9

16.8

18.0

17

21.7

20.5

21.2

25.8

23.3

24.3

23.5

21.1

22.2

19.3

16.6

17.8

18

22.5

21.0

21.8

26.5

23.5

24.8

24.2

21.6

22.8

18.6

16.1

17.0

19

21.9

21.6

21.7

26.1

23.5

24.6

25.1

22.1

23.1

19.1

15.6

16.8

20

23.1

21.7

22.4

26.6

23.7

24.8

25.4

22.1

23.3

17.7

15.7

16.5

21

23.2

22.3

22.7

26.3

23.6

24.7

25.0

22.1

23.3

19.1

15.7

16.9

22

22.8

21.8

22.4

25.8

23.6

24.6

24.4

21.9

22.9

17.5

15.8

16.5

23

22.2

21.6

21.8

25.9

23.6

24.5

24.0

21.9

22.7

17.4

15.8

16.5

24

22.2

21.5

21.8

25.8

23.6

24.6

24.4

21.8

23.0

17.5

15.6

16.5

25

21.9

20.5

21.3

25.6

23.4

24.4

26.4

21.8

23.5

18.0

16.3

17.0

26

21.3

20.4

20.8

25.6

23.2

24.2

25.3

22.5

23.6

18.3

16.5

17.3

27

21.1

20.3

20.6

24.6

23.3

24.0

26.2

22.5

23.8

18.4

16.9

17.5

28

21.2

20.3

20.6

24.8

23.6

24.1

24.2

22.3

22.9

18.0

16.6

17.2

29

21.4

20.3

20.9

25.6

23.8

24.6

23.5

22.4

22.8

17.8

16.3

16.9

30

21.5

20.6

21.1

25.9

23.8

24.7

22.7

21.9

22.2

16.4

15.3

15.9

31

---

---

---

25.8

23.9

24.6

22.6

21.6

22.0

---

---

---

MONTH

23.2

18.6

20.8

26.6

21.3

24.1

26.6

21.1

23.6

23.9

15.3

18.8

YEAR

26.6

0.6

13.0

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	2,540	2,390	2,500	2,730	2,700	2,720	2,560	2,520	2,550	2,600	2,550	2,570
2	2,500	2,480	2,490	2,740	2,720	2,720	2,570	2,540	2,550	2,580	2,550	2,570
3	2,500	2,470	2,490	2,740	2,710	2,720	2,560	2,510	2,540	2,600	2,550	2,570
4	2,500	2,480	2,490	2,730	2,710	2,720	2,530	2,490	2,510	2,590	2,550	2,570
5	2,520	2,490	2,500	2,740	2,700	2,710	2,610	2,500	2,540	2,580	2,510	2,550
6	2,540	2,500	2,510	2,760	2,710	2,730	2,600	2,550	2,570	2,580	2,510	2,550
7	2,560	2,520	2,540	2,720	2,690	2,710	2,610	2,560	2,570	2,560	2,500	2,540
8	2,600	2,550	2,570	2,700	2,660	2,680	2,620	2,590	2,600	2,580	2,500	2,540
9	2,600	2,570	2,590	2,680	2,640	2,660	2,620	2,590	2,600	2,590	2,530	2,560
10	2,610	2,580	2,600	2,680	2,640	2,660	2,620	2,570	2,600	2,590	2,540	2,570
11	2,610	2,580	2,600	2,710	2,620	2,640	2,620	2,580	2,600	2,600	2,560	2,580
12	2,600	2,560	2,590	2,650	2,620	2,630	2,610	2,590	2,600	2,600	2,550	2,580
13	2,630	2,590	2,610	2,650	2,620	2,630	2,620	2,570	2,600	2,610	2,560	2,580
14	2,640	2,610	2,620	2,640	2,610	2,620	2,610	2,560	2,600	2,580	2,550	2,570
15	2,640	2,620	2,630	2,620	2,600	2,610	2,620	2,580	2,600	2,590	2,550	2,570
16	2,660	2,620	2,640	2,630	2,590	2,610	2,620	2,570	2,600	2,580	2,550	2,570
17	2,660	2,640	2,650	2,620	2,590	2,610	2,610	2,590	2,600	2,580	2,530	2,570
18	2,670	2,640	2,650	2,620	2,590	2,610	2,610	2,580	2,600	2,580	2,550	2,560
19	2,670	2,640	2,660	2,630	2,590	2,610	2,610	2,580	2,590	2,590	2,550	2,570
20	2,680	2,640	2,660	2,620	2,580	2,600	2,610	2,560	2,580	2,590	2,560	2,570
21	2,670	2,650	2,660	2,620	2,580	2,600	2,620	2,570	2,590	2,570	2,540	2,560
22	2,680	2,660	2,670	2,630	2,580	2,600	2,630	2,580	2,600	2,590	2,560	2,580
23	2,710	2,670	2,690	2,600	2,570	2,590	2,610	2,550	2,590	2,600	2,570	2,590
24	2,730	2,700	2,720	2,600	2,580	2,590	2,590	2,560	2,570	2,600	2,560	2,580
25	2,750	2,720	2,730	2,600	2,560	2,580	2,630	2,590	2,610	2,580	2,530	2,560
26	2,750	2,670	2,740	2,620	2,540	2,560	2,670	2,600	2,630	2,560	2,520	2,530
27	2,750	2,690	2,740	2,580	2,530	2,560	2,670	2,580	2,640	2,590	2,520	2,550
28	2,760	2,730	2,750	2,580	2,540	2,560	2,630	2,570	2,600	2,560	2,480	2,530
29	2,750	2,680	2,710	2,590	2,550	2,570	2,610	2,560	2,570	2,570	2,480	2,530
30	2,760	2,670	2,700	2,580	2,550	2,560	2,590	2,540	2,560	2,570	2,540	2,550
31	2,760	2,700	2,720	---	---	---	2,590	2,530	2,560	2,570	2,540	2,560
MONTH	2,760	2,390	2,630	2,760	2,530	2,630	2,670	2,490	2,580	2,610	2,480	2,560
	FEBRUARY	MARCH	APRIL	MAY
1	2,600	2,550	2,560	2,500	2,450	2,470	2,520	2,490	2,510	2,850	2,840	2,850
2	2,570	2,530	2,550	2,500	2,470	2,480	2,500	2,470	2,490	2,850	2,830	2,830
3	2,540	2,510	2,530	2,500	2,470	2,490	2,520	2,500	2,510	2,830	2,810	2,820
4	2,560	2,500	2,520	2,490	2,470	2,480	2,520	2,490	2,500	2,820	2,810	2,820
5	2,560	2,520	2,540	2,510	2,470	2,480	2,500	2,480	2,490	2,820	2,810	2,810
6	2,540	2,510	2,520	2,530	2,480	2,500	2,490	2,470	2,480	2,810	2,800	2,810
7	2,570	2,520	2,540	2,550	2,480	2,510	2,480	2,470	2,470	2,820	2,810	2,810
8	2,600	2,520	2,560	2,530	2,490	2,510	2,490	2,450	2,470	2,810	2,800	2,810
9	2,570	2,510	2,540	2,520	2,490	2,510	2,500	2,460	2,480	2,810	2,810	2,810
10	2,570	2,500	2,540	2,540	2,500	2,520	2,490	2,460	2,470	2,810	2,800	2,800
11	2,570	2,480	2,510	2,540	2,500	2,520	2,600	2,450	2,510	2,800	2,800	2,800
12	2,550	2,480	2,520	2,520	2,490	2,510	2,720	2,600	2,680	2,800	2,800	2,800
13	2,530	2,450	2,500	2,510	2,490	2,500	2,810	2,720	2,770	2,800	2,790	2,790
14	2,540	2,490	2,520	2,500	2,470	2,490	2,880	2,810	2,840	2,790	2,790	2,790
15	2,530	2,520	2,520	2,500	2,460	2,480	---	---	---	2,810	2,790	2,790
16	2,550	2,510	2,530	2,490	2,460	2,470	---	---	---	2,800	2,790	2,790
17	2,550	2,520	2,530	2,500	2,470	2,480	---	---	---	2,820	2,800	2,810
18	2,540	2,480	2,510	2,490	2,470	2,480	---	---	---	2,820	2,800	2,810
19	2,510	2,480	2,490	2,470	2,430	2,450	---	---	---	2,820	2,810	2,820
20	2,500	2,480	2,490	2,490	2,460	2,480	---	---	---	2,830	2,820	2,820
21	2,500	2,460	2,480	2,500	2,470	2,480	---	---	---	2,840	2,820	2,830
22	2,490	2,460	2,480	2,520	2,490	2,500	---	---	---	2,850	2,830	2,840
23	2,470	2,440	2,460	2,520	2,490	2,500	---	---	---	2,850	2,840	2,840
24	2,470	2,450	2,460	2,510	2,490	2,510	---	---	---	2,850	2,840	2,850
25	2,520	2,460	2,500	2,520	2,490	2,500	---	---	---	2,850	2,840	2,840
26	2,530	2,450	2,490	2,510	2,500	2,500	---	---	---	2,850	2,840	2,850
27	2,490	2,330	2,440	2,520	2,490	2,510	---	---	---	2,860	2,850	2,850
28	2,460	2,410	2,450	2,530	2,500	2,510	2,850	2,810	2,820	2,860	2,840	2,850
29	---	---	---	2,540	2,510	2,520	2,840	2,820	2,830	2,850	2,830	2,840
30	---	---	---	2,540	2,510	2,530	2,850	2,840	2,840	2,830	2,800	2,820
31	---	---	---	---	---	---	---	---	---	2,830	2,780	2,810
MONTH	2,600	2,330	2,510	---	---	---	---	---	---	2,860	2,780	2,820
	JUNE	JULY	AUGUST	SEPTEMBER
1	2,840	2,750	2,770	1,750	1,730	1,740	1,660	1,640	1,650	1,770	1,750	1,760
2	2,840	2,830	2,840	1,740	1,730	1,730	1,670	1,650	1,660	1,770	1,760	1,770
3	2,840	2,800	2,820	1,750	1,730	1,740	1,670	1,660	1,660	1,780	1,760	1,770
4	2,830	2,790	2,810	1,750	1,610	1,640	1,670	1,660	1,660	1,790	1,770	1,780
5	2,800	2,690	2,750	1,630	1,600	1,620	1,670	1,660	1,660	1,790	1,770	1,780
6	2,720	2,650	2,690	1,600	1,590	1,590	1,670	1,660	1,660	1,790	1,780	1,790
7	2,730	2,560	2,630	1,600	1,580	1,590	1,670	1,660	1,670	1,790	1,780	1,780
8	2,640	2,580	2,610	1,600	1,560	1,580	1,680	1,660	1,670	1,790	1,780	1,780
9	2,590	2,530	2,550	1,580	1,560	1,570	1,680	1,670	1,680	1,790	1,740	1,770
10	2,560	2,490	2,530	1,570	1,550	1,550	1,680	1,670	1,680	1,760	1,720	1,750
11	2,490	2,400	2,420	1,570	1,550	1,560	1,680	1,650	1,670	1,730	1,700	1,710
12	2,420	2,320	2,370	1,580	1,560	1,570	1,660	1,630	1,640	1,700	1,680	1,690
13	2,350	2,300	2,330	1,590	1,580	1,580	1,630	1,600	1,620	1,690	1,670	1,680
14	2,310	2,270	2,290	1,600	1,580	1,590	1,600	1,560	1,590	1,680	1,660	1,670
15	2,270	2,260	2,260	1,600	1,590	1,590	1,580	1,560	1,570	1,680	1,660	1,670
16	2,270	2,260	2,260	1,610	1,590	1,600	1,600	1,570	1,580	1,690	1,660	1,680
17	2,260	2,230	2,240	1,610	1,600	1,600	1,610	1,590	1,600	1,690	1,670	1,680
18	2,240	2,100	2,170	1,620	1,610	1,610	1,630	1,600	1,610	1,680	1,670	1,680
19	2,190	2,130	2,160	1,630	1,610	1,620	1,660	1,620	1,640	1,690	1,660	1,670
20	2,190	2,120	2,160	1,630	1,620	1,630	1,680	1,650	1,670	1,680	1,660	1,670
21	2,120	1,970	2,040	1,640	1,630	1,630	1,700	1,670	1,680	1,680	1,660	1,670
22	1,970	1,840	1,880	1,640	1,630	1,630	1,710	1,690	1,700	1,680	1,660	1,670
23	1,850	1,830	1,840	1,640	1,620	1,630	1,720	1,710	1,710	1,680	1,660	1,670
24	1,850	1,720	1,780	1,640	1,620	1,630	1,730	1,710	1,720	1,670	1,660	1,670
25	1,750	1,730	1,740	1,640	1,620	1,630	1,740	1,720	1,730	1,680	1,670	1,670
26	1,760	1,740	1,750	1,640	1,630	1,630	1,750	1,730	1,740	1,680	1,660	1,670
27	1,770	1,760	1,760	1,640	1,630	1,640	1,760	1,730	1,750	1,680	1,660	1,670
28	1,770	1,760	1,760	1,640	1,640	1,640	1,760	1,740	1,750	1,680	1,660	1,670
29	1,770	1,750	1,760	1,650	1,640	1,640	1,760	1,750	1,750	1,670	1,650	1,660
30	1,760	1,740	1,750	1,640	1,640	1,640	1,760	1,750	1,750	1,670	1,650	1,650
31	---	---	---	1,650	1,640	1,640	1,770	1,750	1,760	---	---	---
MONTH	2,840	1,720	2,260	1,750	1,550	1,620	1,770	1,560	1,670	1,790	1,650	1,710

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	19.0	16.4	17.3	5.7	4.7	5.3	4.9	2.1	3.6	3.4	2.3	2.8
2	16.8	15.5	16.1	6.7	5.0	5.9	5.4	2.3	3.9	3.9	2.4	3.0
3	17.2	15.1	15.8	8.5	5.3	6.6	4.6	1.8	3.3	3.9	2.4	3.4
4	18.0	14.6	15.6	8.4	5.1	6.6	4.0	1.3	2.5	4.3	3.1	3.8
5	17.8	14.2	15.4	8.6	5.3	6.7	5.0	2.5	3.8	4.4	2.6	3.6
6	17.1	13.9	15.0	9.9	4.9	6.8	5.2	2.4	3.9	5.2	3.6	4.4
7	17.3	13.5	14.9	10.9	5.0	7.5	4.7	2.1	3.6	5.6	2.9	4.5
8	16.0	13.6	14.6	9.8	6.2	7.7	4.7	2.8	3.9	6.1	3.0	4.4
9	16.4	14.3	14.9	11.2	7.1	8.6	4.9	2.9	3.8	5.2	3.7	4.5
10	16.6	14.1	14.8	10.9	7.1	8.6	5.0	1.8	3.3	4.2	2.7	3.5
11	17.5	13.9	15.1	9.2	6.0	7.5	4.2	2.3	3.5	3.8	2.0	3.1
12	15.7	13.8	14.4	9.4	5.5	7.1	4.2	2.7	3.5	4.7	2.6	3.6
13	15.5	13.1	14.0	8.4	5.2	6.8	4.9	1.9	3.5	5.1	2.8	4.0
14	15.3	12.7	13.7	8.8	6.5	7.5	6.6	2.1	3.8	4.5	2.8	3.9
15	15.0	12.2	13.3	8.6	6.7	7.4	4.8	2.1	3.6	4.4	2.7	3.7
16	14.9	12.1	13.2	8.7	5.1	6.7	4.3	2.2	3.8	3.3	0.8	2.4
17	14.9	11.6	12.8	8.8	5.1	6.8	5.0	3.3	4.2	4.3	2.8	3.4
18	14.3	11.7	12.8	9.5	5.7	7.1	5.5	3.5	4.6	3.5	1.0	2.4
19	13.8	11.8	12.4	9.5	4.7	6.5	4.3	2.4	3.5	5.4	1.1	3.2
20	14.7	11.3	12.4	9.0	4.8	6.6	4.5	1.2	2.8	5.2	2.2	3.7
21	13.6	11.1	12.1	9.4	5.0	6.9	4.3	2.3	3.2	3.8	1.1	2.9
22	13.7	11.0	12.0	11.2	5.4	7.6	4.2	1.9	3.0	2.6	1.7	2.2
23	11.0	9.8	10.4	7.3	5.5	6.5	3.0	1.3	2.2	2.5	1.4	1.9
24	10.1	9.5	9.7	6.6	4.9	5.6	3.4	1.9	2.6	3.2	1.5	2.3
25	11.0	9.4	9.9	4.9	3.5	4.3	3.0	1.2	2.1	4.1	2.0	2.8
26	10.8	9.7	10.1	4.1	2.1	3.1	2.4	0.7	1.8	4.4	2.0	3.1
27	10.9	9.8	10.1	5.1	2.1	3.4	2.2	0.7	1.4	4.8	3.5	4.0
28	10.4	9.5	9.8	5.4	1.6	3.3	3.0	1.0	2.0	5.3	3.4	4.4
29	9.7	8.1	9.2	5.7	2.8	4.1	3.3	1.6	2.5	6.0	2.3	4.6
30	8.1	7.2	7.7	6.3	2.8	4.3	4.0	2.2	2.9	5.3	3.3	4.3
31	7.2	5.5	6.7	---	---	---	3.4	1.6	2.7	6.4	3.0	4.7
MONTH	19.0	5.5	12.8	11.2	1.6	6.3	6.6	0.7	3.2	6.4	0.8	3.5
	FEBRUARY	MARCH	APRIL	MAY
1	8.9	4.4	5.8	7.6	3.4	5.2	19.5	10.0	14.0	14.7	13.0	13.8
2	7.4	4.9	5.8	7.8	4.5	5.9	16.2	11.5	13.6	14.8	13.4	14.0
3	6.0	3.6	4.6	7.6	3.7	5.9	15.9	10.3	12.9	15.0	13.7	14.2
4	5.6	2.7	4.0	6.8	2.9	4.6	18.4	11.0	13.7	15.3	13.7	14.5
5	5.1	3.5	4.3	6.1	1.1	3.4	12.8	10.5	11.6	15.3	14.1	14.7
6	4.7	2.2	3.4	7.6	2.8	5.0	12.0	8.8	10.3	15.3	14.4	14.7
7	4.1	1.7	2.7	11.1	4.1	7.1	11.0	9.3	10.2	15.6	14.3	14.9
8	3.8	1.5	2.7	13.1	5.3	7.7	16.2	8.4	11.7	16.2	14.9	15.4
9	4.1	2.2	2.9	8.4	5.6	7.0	18.3	9.2	13.1	16.0	15.0	15.4
10	4.8	2.2	3.4	9.7	5.5	7.5	17.1	10.5	13.8	15.8	15.1	15.4
11	4.8	2.0	3.5	13.8	6.0	9.4	14.9	10.9	12.7	15.9	14.9	15.3
12	5.8	2.2	4.1	12.2	7.0	9.4	12.5	10.1	11.2	15.6	14.5	14.9
13	5.6	3.6	4.7	13.7	7.6	10.6	12.8	10.0	11.2	15.3	14.3	14.8
14	6.2	3.7	5.0	15.1	8.4	11.1	12.0	10.1	11.0	16.1	14.5	15.2
15	5.4	4.4	4.9	16.1	8.5	11.8	13.5	10.0	11.4	16.1	14.8	15.3
16	6.6	3.6	5.0	14.6	9.8	12.0	13.5	12.2	12.6	16.3	15.3	15.7
17	8.8	4.4	6.4	13.2	9.6	11.3	13.8	12.3	12.9	18.8	15.5	16.8
18	6.7	5.5	6.0	12.4	10.2	11.4	14.0	12.3	13.0	18.5	16.1	17.2
19	8.1	5.0	6.1	11.2	8.3	9.6	12.7	12.1	12.4	18.0	16.1	16.8
20	9.5	4.8	6.8	10.4	7.4	8.8	13.1	11.8	12.4	18.2	16.1	16.9
21	8.0	4.2	6.2	9.7	8.7	9.1	13.8	12.3	12.9	18.9	15.7	17.2
22	10.3	5.3	7.2	15.0	7.7	10.6	13.6	12.5	12.9	20.1	16.2	17.7
23	6.3	3.8	4.9	16.0	9.0	11.9	13.7	12.6	13.1	19.6	16.6	18.0
24	3.8	1.4	2.4	14.8	10.2	12.4	12.8	12.0	12.3	20.0	17.2	18.2
25	2.8	0.6	1.8	17.5	11.2	13.8	13.3	11.9	12.4	18.8	17.2	17.7
26	4.3	2.0	3.1	16.3	11.0	13.0	13.2	11.7	12.3	19.3	17.0	17.9
27	6.4	2.9	4.3	11.8	9.0	10.8	13.9	11.7	12.8	18.7	17.3	18.0
28	4.5	3.4	3.9	9.8	7.0	8.6	13.6	12.4	12.8	19.1	18.0	18.5
29	---	---	---	11.8	6.7	9.1	14.4	12.4	13.3	20.4	18.2	19.1
30	---	---	---	13.8	7.3	10.4	14.3	13.0	13.5	20.7	18.8	19.5
31	---	---	---	15.9	8.8	10.9	---	---	---	21.1	20.4	20.6
MONTH	10.3	0.6	4.5	17.5	1.1	9.2	19.5	8.4	12.5	21.1	13.0	16.4
	JUNE	JULY	AUGUST	SEPTEMBER
1	22.0	20.8	21.4	22.1	21.3	21.7	25.0	23.6	24.3	23.7	21.1	22.2
2	22.3	21.4	21.7	23.0	21.6	22.2	25.4	23.6	24.4	23.9	21.1	22.1
3	21.5	21.0	21.2	22.8	21.8	22.2	25.3	23.6	24.2	22.2	20.8	21.4
4	21.1	20.7	20.9	24.8	21.8	23.6	25.6	23.5	24.4	22.8	20.5	21.4
5	20.7	20.1	20.5	24.6	22.9	23.7	26.0	23.7	24.7	23.4	20.0	21.2
6	20.1	19.4	19.9	25.1	23.4	24.1	25.5	23.9	24.5	22.1	20.2	21.0
7	19.5	18.6	19.1	24.9	23.8	24.1	25.7	23.7	24.6	21.2	20.2	20.4
8	19.8	19.2	19.5	25.5	23.5	24.3	26.3	24.0	24.9	22.1	20.0	20.9
9	19.9	19.0	19.4	25.2	23.2	24.1	26.3	24.0	25.0	22.4	20.6	21.4
10	19.7	18.9	19.2	25.6	23.6	24.4	26.6	23.8	24.8	21.9	20.4	21.2
11	20.3	19.4	19.8	25.7	23.4	24.4	25.8	23.8	24.7	21.5	20.4	20.9
12	20.6	19.5	19.9	25.2	23.1	24.1	25.3	23.8	24.4	21.9	20.0	20.7
13	20.6	19.8	20.1	25.7	23.6	24.4	25.1	23.7	24.3	20.2	18.3	19.3
14	20.7	20.0	20.3	25.3	23.3	24.2	24.8	23.6	24.0	20.1	17.5	18.5
15	21.2	20.1	20.5	25.2	23.4	24.2	24.4	22.6	23.4	20.3	16.8	18.1
16	21.0	20.2	20.6	25.3	23.5	24.3	23.6	21.6	22.4	19.9	16.8	18.0
17	21.7	20.5	21.2	25.8	23.3	24.3	23.5	21.1	22.2	19.3	16.6	17.8
18	22.5	21.0	21.8	26.5	23.5	24.8	24.2	21.6	22.8	18.6	16.1	17.0
19	21.9	21.6	21.7	26.1	23.5	24.6	25.1	22.1	23.1	19.1	15.6	16.8
20	23.1	21.7	22.4	26.6	23.7	24.8	25.4	22.1	23.3	17.7	15.7	16.5
21	23.2	22.3	22.7	26.3	23.6	24.7	25.0	22.1	23.3	19.1	15.7	16.9
22	22.8	21.8	22.4	25.8	23.6	24.6	24.4	21.9	22.9	17.5	15.8	16.5
23	22.2	21.6	21.8	25.9	23.6	24.5	24.0	21.9	22.7	17.4	15.8	16.5
24	22.2	21.5	21.8	25.8	23.6	24.6	24.4	21.8	23.0	17.5	15.6	16.5
25	21.9	20.5	21.3	25.6	23.4	24.4	26.4	21.8	23.5	18.0	16.3	17.0
26	21.3	20.4	20.8	25.6	23.2	24.2	25.3	22.5	23.6	18.3	16.5	17.3
27	21.1	20.3	20.6	24.6	23.3	24.0	26.2	22.5	23.8	18.4	16.9	17.5
28	21.2	20.3	20.6	24.8	23.6	24.1	24.2	22.3	22.9	18.0	16.6	17.2
29	21.4	20.3	20.9	25.6	23.8	24.6	23.5	22.4	22.8	17.8	16.3	16.9
30	21.5	20.6	21.1	25.9	23.8	24.7	22.7	21.9	22.2	16.4	15.3	15.9
31	---	---	---	25.8	23.9	24.6	22.6	21.6	22.0	---	---	---
MONTH	23.2	18.6	20.8	26.6	21.3	24.1	26.6	21.1	23.6	23.9	15.3	18.8
YEAR	26.6	0.6	13.0

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U.S. Geological Survey
Water Resources of Colorado
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Last Modified: April 28, 2004