Station list     Available data
ILLINOIS RIVER BASIN


05536118       NORTH BRANCH CHICAGO RIVER AT GRAND AVENUE AT CHICAGO, IL

 

LOCATION.-- Lat 41°53'30", long 87°38'30" (NAD of 1927), in NW1/4SW1/4 sec.12, T.40 N., R.13 E., Cook County, Hydrologic Unit 07120003, on right upstream side of Grand Avenue bridge in Chicago, 0.6 mi upstream from the confluence with the main stem of the Chicago River and at mile 36.0.
 

DRAINAGE AREA.-- 180 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: July 2, 2002 to current year.

SURFACE-WATER QUALITY
 

PHYSICAL AND CHEMICAL: Water years 2002 to current year.
 

WATER TEMPERATURE: September 2002 to current year.
 

GAGE.-- Water-stage recorder, acoustic velocity meter and water-temperature sensor. Datum of gage is 579.48 ft above NGVD of 1929 (Chicago City datum).
 

REMARKS.-- This station provides data for a water-quality model.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum daily discharge, 4,430 ft3/s, Aug. 22, 2002, minimum daily discharge, -20 ft3/s, Jan. 31, 2004, due to regulation.

WATER TEMPERATURE: Maximum recorded, 25.6°C, Aug. 27, 2003; minimum recorded, 0.5°C, Jan. 31, 2004.
 

EXTREMES FOR CURRENT YEAR.-- Maximum recorded water temperature, 25.6°C, Aug. 27; minimum recorded, 3.1°C, Jan. 19 and Mar. 9.
 

REMARKS FOR CURRENT YEAR.-- Water-temperature data are from six temperature sensors on right bank with sensor #1 being the lowest in the water column and sensor #6 being the highest.
Water Temperature, Sensor #1, degrees Celsius
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MINIMUM VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 --- --- 8.0 9.0 6.3 6.8 10.2 11.3 15.6 --- --- 21.6
2 --- --- 7.9 7.8 7.4 7.1 11.1 10.8 15.7 --- --- 21.6
3 --- 12.5 7.7 5.9 7.6 6.6 11.9 11.5 15.3 --- --- 21.5
4 --- 12.3 8.3 7.4 7.0 6.0 8.8 12.4 15.3 --- --- 21.9
5 --- 12.6 7.2 7.8 6.1 5.6 7.1 12.1 16.1 --- --- 21.9
6 --- 12.7 5.3 6.5 5.7 5.6 7.1 12.9 16.6 --- --- 22.1
7 --- 12.7 5.6 6.9 5.2 5.6 7.3 14.2 17.3 --- --- 22.0
8 --- 13.1 7.6 7.8 4.8 5.2 7.4 14.1 --- --- --- 22.2
9 --- 13.0 7.6 8.2 4.5 3.1 7.2 13.5 --- --- --- 23.2
10 --- 13.7 7.8 7.5 4.7 5.5 8.4 14.4 --- --- --- 23.3
11 --- 14.4 8.2 5.3 4.7 5.3 10.1 14.4 --- --- --- 23.3
12 --- 14.1 9.0 5.5 4.3 6.0 10.6 13.7 --- --- --- 23.3
13 --- 13.8 7.2 4.8 4.3 7.3 11.2 14.0 --- --- --- 23.2
14 --- 13.0 8.3 3.7 4.6 8.0 11.9 14.4 --- --- --- 22.8
15 --- 11.1 9.2 4.7 5.4 8.0 12.8 13.6 --- --- --- 22.4
16 --- 11.7 9.1 5.2 5.2 8.7 14.2 13.5 --- --- --- 21.4
17 --- 10.9 7.4 5.5 5.3 9.8 13.2 14.2 --- --- --- 21.0
18 --- 10.6 7.6 3.3 5.5 10.4 11.9 15.2 --- --- --- 20.3
19 --- 10.6 9.8 3.1 6.1 9.7 11.7 15.7 --- --- --- 19.8
20 --- 11.7 8.5 4.4 6.8 9.6 12.4 15.9 --- --- --- 19.3
21 --- 11.0 7.6 4.6 7.0 9.9 13.8 16.0 --- --- --- 18.3
22 --- 10.2 7.4 4.3 7.5 9.7 13.3 15.7 --- --- --- 18.0
23 --- 11.5 6.9 3.5 6.6 9.6 12.9 15.5 --- --- --- 17.9
24 --- 9.9 7.0 3.4 5.6 10.0 13.2 16.2 --- --- --- 18.0
25 --- 8.7 7.0 3.6 5.1 11.3 13.1 16.5 --- --- --- 17.1
26 --- 10.2 6.4 4.1 5.1 11.9 12.8 16.6 --- --- --- 16.9
27 --- 9.8 5.1 4.3 5.6 11.6 13.4 17.2 --- --- --- 16.9
28 --- 8.1 6.0 4.5 6.0 11.3 14.1 17.3 --- --- 24.6 17.7
29 --- 8.9 6.7 4.6 --- 10.7 15.0 16.5 --- --- 24.2 16.4
30 --- 8.6 6.8 5.4 --- 10.2 14.4 16.4 --- --- 23.6 16.4
31 --- --- 8.7 6.3 --- 9.8 --- 15.8 --- --- 22.7 ---
 
MEAN --- --- 7.5 5.4 5.7 8.3 11.4 14.6 --- --- --- 20.4
MAX --- --- 9.8 9.0 7.6 11.9 15.0 17.3 --- --- --- 23.3
MIN --- --- 5.1 3.1 4.3 3.1 7.1 10.8 --- --- --- 16.4
Water Temperature, Sensor #2, degrees Celsius
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MINIMUM VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 --- --- 8.0 9.0 6.3 6.8 10.2 11.3 15.6 --- --- 21.6
2 --- --- 7.9 7.8 7.4 7.1 11.1 10.8 15.7 --- --- 21.7
3 --- 12.5 7.7 5.9 7.6 6.6 11.9 11.5 15.3 --- --- 21.6
4 --- 12.3 8.3 7.4 7.0 6.0 8.8 12.4 15.4 --- --- 22.0
5 --- 12.6 7.3 7.8 6.2 5.6 7.1 12.1 16.1 --- --- 21.9
6 --- 12.7 5.3 6.5 5.7 5.6 7.0 12.9 16.6 --- --- 22.1
7 --- 12.7 5.7 6.9 5.2 5.7 7.3 14.2 17.3 --- --- 22.0
8 --- 13.1 7.6 7.8 4.8 5.2 7.4 14.1 --- --- --- 22.2
9 --- 13.0 7.7 8.2 4.5 3.1 7.2 13.5 --- --- --- 23.2
10 --- 13.7 7.8 7.5 4.7 5.5 8.4 14.4 --- --- --- 23.4
11 --- 14.4 8.2 5.3 4.7 5.3 10.1 14.4 --- --- --- 23.3
12 --- 14.1 9.0 5.5 4.3 6.0 10.6 13.7 --- --- --- 23.4
13 --- 13.8 7.2 4.8 4.3 7.3 11.1 14.0 --- --- --- 23.2
14 --- 13.0 8.3 3.7 4.6 8.0 11.9 14.5 --- --- --- 22.9
15 --- 11.1 9.2 4.7 5.4 8.0 12.8 13.6 --- --- --- 22.4
16 --- 11.7 9.1 5.2 5.2 8.7 14.2 13.5 --- --- --- 21.5
17 --- 10.9 7.4 5.5 5.3 9.8 13.2 14.2 --- --- --- 21.1
18 --- 10.6 7.6 3.3 5.5 10.5 11.9 15.2 --- --- --- 20.3
19 --- 10.6 9.8 3.1 6.1 9.7 11.7 15.7 --- --- --- 19.8
20 --- 11.8 8.6 4.4 6.8 9.6 12.4 15.9 --- --- --- 19.4
21 --- 10.9 7.6 4.6 7.0 9.9 13.8 16.1 --- --- --- 18.3
22 --- 10.2 7.4 4.3 7.5 9.7 13.3 15.6 --- --- --- 18.1
23 --- 11.5 6.9 3.6 6.6 9.6 12.9 15.5 --- --- --- 17.9
24 --- 9.9 7.0 3.4 5.6 10.0 13.2 16.1 --- --- --- 18.0
25 --- 8.7 7.0 3.6 5.1 11.3 13.1 16.5 --- --- --- 17.1
26 --- 10.2 6.3 4.2 5.1 11.9 12.8 16.6 --- --- --- 16.9
27 --- 9.8 5.1 4.3 5.6 11.6 13.4 17.2 --- --- --- 16.9
28 --- 8.0 6.2 4.5 6.0 11.3 14.1 17.3 --- --- 24.6 17.7
29 --- 8.9 7.0 4.6 --- 10.7 15.1 16.6 --- --- 24.3 16.4
30 --- 8.6 6.8 5.4 --- 10.2 14.6 16.4 --- --- 23.6 16.4
31 --- --- 8.7 6.3 --- 9.8 --- 15.8 --- --- 22.7 ---
 
MEAN --- --- 7.5 5.5 5.7 8.3 11.4 14.6 --- --- --- 20.4
MAX --- --- 9.8 9.0 7.6 11.9 15.1 17.3 --- --- --- 23.4
MIN --- --- 5.1 3.1 4.3 3.1 7.0 10.8 --- --- --- 16.4
Water Temperature, Sensor #3, degrees Celsius
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MINIMUM VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 --- --- 8.0 9.0 6.3 6.8 10.2 11.2 15.5 --- --- 21.6
2 --- --- 7.9 7.8 7.3 7.0 11.1 10.8 15.6 --- --- 21.6
3 --- 12.5 7.7 5.8 7.6 6.6 11.9 11.4 15.3 --- --- 21.5
4 --- 12.3 8.3 7.4 7.0 6.0 8.8 12.3 15.3 --- --- 21.9
5 --- 12.6 7.3 7.8 6.2 5.6 7.1 12.1 16.0 --- --- 21.8
6 --- 12.7 6.2 6.4 5.7 5.6 7.0 12.9 16.5 --- --- 22.0
7 --- 12.7 5.8 6.9 5.2 5.6 7.3 14.2 17.2 --- --- 21.9
8 --- 13.0 7.6 7.8 4.8 5.5 7.4 14.0 --- --- --- 22.2
9 --- 13.0 7.6 8.2 4.5 5.3 7.1 13.4 --- --- --- 23.2
10 --- 13.6 7.8 7.5 4.7 5.5 8.4 14.4 --- --- --- 23.3
11 --- 14.3 8.2 5.3 4.7 5.3 10.0 14.4 --- --- --- 23.2
12 --- 14.0 9.0 5.5 4.3 6.0 10.5 13.6 --- --- --- 23.3
13 --- 13.7 7.2 4.8 4.4 7.2 11.0 13.9 --- --- --- 23.1
14 --- 12.9 8.3 3.7 4.6 8.0 11.8 14.4 --- --- --- 22.8
15 --- 11.1 9.2 4.7 5.4 8.0 12.7 13.6 --- --- --- 22.4
16 --- 11.6 9.0 5.2 5.2 8.7 14.2 13.4 --- --- --- 21.4
17 --- 10.9 7.4 5.5 5.3 9.8 13.1 14.2 --- --- --- 21.0
18 --- 10.6 7.6 3.3 5.5 10.4 11.9 15.2 --- --- --- 20.2
19 --- 10.6 9.8 3.1 6.1 9.6 11.7 15.6 --- --- --- 19.7
20 --- 11.7 8.5 4.4 6.8 9.5 12.3 15.8 --- --- --- 19.3
21 --- 10.9 7.6 4.5 7.0 9.8 13.7 16.0 --- --- --- 18.2
22 --- 10.2 7.3 4.3 7.5 9.6 13.3 15.5 --- --- --- 18.0
23 --- 11.5 6.9 3.6 6.6 9.6 12.8 15.4 --- --- --- 17.9
24 --- 9.9 7.0 3.4 5.6 9.9 13.1 16.0 --- --- --- 18.0
25 --- 8.7 7.0 3.6 5.1 11.3 13.1 16.4 --- --- --- 17.0
26 --- 10.1 6.3 4.2 5.1 11.9 12.8 16.5 --- --- --- 16.9
27 --- 9.7 5.1 4.3 5.6 11.4 13.3 17.1 --- --- --- 16.8
28 --- 8.0 6.5 4.5 6.0 11.2 14.0 17.2 --- --- 24.5 17.7
29 --- 8.9 7.0 4.6 --- 10.7 15.0 16.4 --- --- 24.2 16.4
30 --- 8.6 6.8 5.4 --- 10.1 14.6 16.3 --- --- 23.5 16.3
31 --- --- 8.7 6.3 --- 9.8 --- 15.8 --- --- 22.6 ---
 
MEAN --- --- 7.6 5.4 5.7 8.3 11.4 14.5 --- --- --- 20.4
MAX --- --- 9.8 9.0 7.6 11.9 15.0 17.2 --- --- --- 23.3
MIN --- --- 5.1 3.1 4.3 5.3 7.0 10.8 --- --- --- 16.3
Water Temperature, Sensor #4, degrees Celsius
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MINIMUM VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 --- --- 8.0 9.0 6.5 6.9 10.2 11.3 15.6 --- --- 21.7
2 --- --- 7.9 7.8 7.4 7.1 11.1 10.9 15.6 --- --- 21.7
3 --- 12.5 7.8 5.8 7.6 6.7 12.0 11.5 15.3 --- --- 21.5
4 --- 12.4 8.3 7.4 7.0 6.0 8.8 12.4 15.3 --- --- 22.0
5 --- 12.6 7.4 7.8 6.2 5.6 7.1 12.1 16.1 --- --- 21.9
6 --- 12.7 6.6 6.5 5.7 5.6 7.1 12.9 16.6 --- --- 22.1
7 --- 12.7 6.8 6.9 5.2 5.7 7.4 14.2 17.3 --- --- 22.0
8 --- 13.1 7.6 7.8 4.8 6.0 7.4 14.1 --- --- --- 22.3
9 --- 13.0 7.7 8.2 4.5 6.2 7.1 13.5 --- --- --- 23.3
10 --- 13.7 7.8 7.5 4.8 5.5 8.4 14.4 --- --- --- 23.4
11 --- 14.4 8.2 5.3 4.7 5.3 10.1 14.5 --- --- --- 23.3
12 --- 14.1 9.0 5.6 4.4 6.0 10.6 13.6 --- --- --- 23.4
13 --- 13.8 7.2 4.9 4.4 7.3 11.0 14.0 --- --- --- 23.2
14 --- 13.0 8.3 3.7 4.6 8.0 11.9 14.5 --- --- --- 22.9
15 --- 11.1 9.2 4.7 5.4 8.0 12.8 13.6 --- --- --- 22.4
16 --- 11.7 9.1 5.2 5.2 8.8 14.2 13.5 --- --- --- 21.5
17 --- 10.9 7.4 5.5 5.3 9.8 13.2 14.2 --- --- --- 21.1
18 --- 10.6 7.6 3.4 5.5 10.5 12.0 15.2 --- --- --- 20.3
19 --- 10.6 9.8 3.1 6.1 9.7 11.7 15.7 --- --- --- 19.8
20 --- 11.8 8.6 4.4 6.8 9.6 12.4 15.9 --- --- --- 19.4
21 --- 10.9 7.6 4.6 7.0 9.9 13.8 16.1 --- --- --- 18.3
22 --- 10.3 7.4 4.3 7.5 9.7 13.3 15.6 --- --- --- 18.1
23 --- 11.6 7.0 3.6 6.7 9.6 12.9 15.5 --- --- --- 18.0
24 --- 9.9 7.0 3.4 5.6 10.0 13.2 16.1 --- --- --- 18.1
25 --- 8.7 7.0 3.6 5.2 11.3 13.1 16.5 --- --- --- 17.1
26 --- 10.2 6.3 4.2 5.1 11.9 12.8 16.6 --- --- --- 16.9
27 --- 9.7 5.1 4.3 5.7 11.5 13.4 17.2 --- --- --- 16.9
28 --- 8.0 6.7 4.5 6.0 11.3 14.1 17.3 --- --- 24.6 17.8
29 --- 9.0 7.1 4.6 --- 10.8 15.1 16.5 --- --- 24.3 16.4
30 --- 8.6 6.8 5.4 --- 10.2 14.6 16.4 --- --- 23.7 16.4
31 --- --- 8.7 6.3 --- 9.8 --- 15.8 --- --- 22.7 ---
 
MEAN --- --- 7.6 5.5 5.7 8.4 11.4 14.6 --- --- --- 20.4
MAX --- --- 9.8 9.0 7.6 11.9 15.1 17.3 --- --- --- 23.4
MIN --- --- 5.1 3.1 4.4 5.3 7.1 10.9 --- --- --- 16.4
Water Temperature, Sensor #5, degrees Celsius
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MINIMUM VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 --- --- 8.0 9.0 6.6 6.8 10.2 11.3 15.5 --- --- 21.7
2 --- --- 7.9 7.8 7.3 7.1 11.1 10.8 15.6 --- --- 21.7
3 --- 12.5 7.8 5.8 7.6 6.6 11.9 11.5 15.3 --- --- 21.5
4 --- 12.3 8.3 7.4 7.0 6.0 8.8 12.3 15.3 --- --- 22.0
5 --- 12.6 7.5 7.8 6.2 5.6 7.1 12.1 16.1 --- --- 21.9
6 --- 12.7 6.8 6.5 5.7 5.6 7.0 12.9 16.6 --- --- 22.1
7 --- 12.7 7.0 6.9 5.2 5.7 7.2 14.2 17.3 --- --- 22.0
8 --- 13.1 7.6 7.8 4.8 6.1 7.4 14.1 --- --- --- 22.2
9 --- 13.0 7.7 8.2 4.5 6.2 7.1 13.4 --- --- --- 23.2
10 --- 13.6 7.8 7.5 4.7 5.5 8.4 14.4 --- --- --- 23.4
11 --- 14.4 8.2 5.3 4.7 5.3 10.0 14.4 --- --- --- 23.3
12 --- 14.1 9.0 5.5 4.3 6.0 10.6 13.6 --- --- --- 23.4
13 --- 13.8 7.1 4.9 --- 7.2 10.8 13.9 --- --- --- 23.2
14 --- 12.9 8.3 3.7 --- 8.0 11.9 14.4 --- --- --- 22.9
15 --- 11.1 9.2 4.7 --- 8.0 12.8 13.6 --- --- --- 22.4
16 --- 11.7 9.1 5.2 --- 8.7 14.2 13.5 --- --- --- 21.5
17 --- 10.9 7.4 5.5 --- 9.8 13.2 14.2 --- --- --- 21.1
18 --- 10.6 7.6 3.3 --- 10.5 12.0 15.2 --- --- --- 20.3
19 --- 10.6 9.8 3.1 --- 9.7 11.7 15.7 --- --- --- 19.8
20 --- 11.7 8.6 4.4 --- 9.5 12.3 15.9 --- --- --- 19.3
21 --- 10.9 7.6 4.6 --- 9.8 13.8 16.0 --- --- --- 18.2
22 --- 10.2 7.4 4.3 --- 9.7 13.3 15.5 --- --- --- 18.1
23 --- 11.5 6.9 3.6 --- 9.6 12.9 15.5 --- --- --- 18.0
24 --- 9.9 7.0 3.4 --- 10.0 13.1 16.1 --- --- --- 18.0
25 --- 8.7 7.0 3.6 --- 11.3 13.1 16.4 --- --- --- 17.1
26 --- 10.2 6.2 4.2 --- 11.9 12.8 16.5 --- --- --- 16.9
27 --- 9.7 5.1 4.4 --- 11.4 13.4 17.2 --- --- --- 16.9
28 --- 8.0 6.8 4.5 6.0 11.3 14.1 17.3 --- --- 24.5 17.8
29 --- 9.0 7.1 4.6 --- 10.7 15.0 16.5 --- --- 24.3 16.4
30 --- 8.6 6.8 5.4 --- 10.1 14.6 16.4 --- --- 23.6 16.4
31 --- --- 8.7 6.3 --- 9.8 --- 15.8 --- --- 22.7 ---
 
MEAN --- --- 7.7 5.5 --- 8.4 11.4 14.5 --- --- --- 20.4
MAX --- --- 9.8 9.0 --- 11.9 15.0 17.3 --- --- --- 23.4
MIN --- --- 5.1 3.1 --- 5.3 7.0 10.8 --- --- --- 16.4
Water Temperature, Sensor #6, degrees Celsius
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MINIMUM VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 --- --- 8.1 9.1 6.7 6.9 10.3 11.4 15.6 --- --- 21.7
2 --- --- 8.0 7.9 7.3 7.2 11.2 11.0 15.7 --- --- 21.7
3 --- 12.6 7.8 6.0 7.7 6.7 12.0 11.6 15.4 --- --- 21.5
4 --- 12.4 8.4 7.5 7.1 6.1 9.0 12.5 15.4 --- --- 22.0
5 --- 12.4 7.6 7.9 6.2 5.7 7.2 12.3 16.1 --- --- 21.9
6 --- 12.8 7.3 6.6 5.8 5.7 7.2 13.0 16.6 --- --- 22.1
7 --- 12.8 7.1 7.0 5.3 5.8 7.3 14.3 17.3 --- --- 22.0
8 --- 13.1 7.6 7.8 4.9 6.2 7.6 14.1 --- --- --- 22.2
9 --- 13.1 7.7 8.3 4.6 6.3 7.2 13.5 --- --- --- 23.2
10 --- 13.7 7.9 7.6 4.8 5.6 8.5 14.5 --- --- --- 23.3
11 --- 14.4 8.3 5.4 4.8 5.4 10.2 14.5 --- --- --- 23.3
12 --- 14.2 9.1 5.6 4.4 6.0 10.7 13.7 --- --- --- 23.3
13 --- 13.8 7.2 5.0 4.5 7.3 10.9 14.0 --- --- --- 23.2
14 --- 13.0 8.4 3.8 4.7 8.1 12.0 14.5 --- --- --- 22.9
15 --- 11.2 9.3 4.8 5.5 8.1 12.9 13.7 --- --- --- 22.4
16 --- 11.7 9.1 5.3 5.3 8.8 14.3 13.6 --- --- --- 21.5
17 --- 10.9 7.5 5.6 5.4 9.8 13.4 14.3 --- --- --- 21.0
18 --- 10.7 7.6 3.5 5.6 10.6 12.1 15.4 --- --- --- 20.3
19 --- 10.7 9.9 3.2 6.2 9.8 11.8 15.8 --- --- --- 19.8
20 --- 11.8 8.6 4.5 6.9 9.5 12.5 16.0 --- --- --- 19.3
21 --- 11.0 7.7 4.7 7.0 10.0 13.9 16.1 --- --- --- 18.2
22 --- 10.3 7.4 4.4 7.6 9.8 13.5 15.7 --- --- --- 18.1
23 --- 11.6 7.0 3.7 6.8 9.7 13.0 15.6 --- --- --- 18.0
24 --- 10.0 7.1 3.5 5.7 10.1 13.3 16.2 --- --- --- 18.0
25 --- 8.8 7.1 3.7 5.2 11.3 13.2 16.6 --- --- --- 17.1
26 --- 10.2 6.3 4.3 5.2 12.0 13.0 16.6 --- --- --- 17.0
27 --- 9.8 5.2 4.5 5.8 11.5 13.6 17.2 --- --- --- 16.9
28 --- 8.1 6.9 4.6 6.2 11.5 14.2 17.3 --- --- 24.5 17.7
29 --- 9.0 7.1 4.7 --- 10.9 15.1 16.6 --- --- 24.3 16.4
30 --- 8.6 6.9 5.5 --- 10.2 14.8 16.4 --- --- 23.6 16.4
31 --- --- 8.8 6.4 --- 9.9 --- 15.9 --- --- 22.7 ---
 
MEAN --- --- 7.7 5.6 5.8 8.5 11.5 14.6 --- --- --- 20.4
MAX --- --- 9.9 9.1 7.7 12.0 15.1 17.3 --- --- --- 23.3
MIN --- --- 5.2 3.2 4.4 5.4 7.2 11.0 --- --- --- 16.4


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data