05533000 DATA: Discharge Tables, 2003

Station list Available data
ILLINOIS RIVER BASIN


LOCATION.-- Lat 41°44'20", long 87°53'47" (NAD of 1927), in SE1/4NE1/4 sec.31, T.38 N., R.12 E., Cook County, Hydrologic Unit 07120004, on left bank at upstream side of bridge on German Church Road, 1.1 mi northwest of Willow Springs, and at mile 2.2.

DRAINAGE AREA.-- 16.5 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: July 1951 to current year.
	STAGE: Water years 1994 to current year.
SURFACE-WATER QUALITY
	MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000.
BIOLOGICAL
	BENTHIC MACROINVERTEBRATES: Water year 2000.
	FISH: Water year 2001.
	HABITAT: Water year 2000.

REVISED RECORDS.-- WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 606.36 ft above NGVD of 1929. Prior to June 17, 1963, water-stage recorder at same site at datum 3.73 ft higher. June 17, 1963, to June 26, 1964, nonrecording gage at site 0.5 mi upstream at datum 4.82 ft higher.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,680 ft³/s, Sept. 14, 1961, gage height, 13.71 ft, present datum; minimum daily, 0.1 ft³/s, Dec. 9, 1957.

REMARKS FOR CURRENT YEAR.-- Records good except those greater than 100 ft³/s, which are fair. Effluent from sewage-treatment plant 2 mi. upstream averaged 16.8 ft³/s during the year. The maximum monthly average was 30.2 ft³/s in May, and the minimum was 13.3 ft³/s in January and February.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	16	14	13	12	15	12	18	240	29	13	51	58
2	22	14	13	12	14	12	17	96	23	13	35	28
3	16	13	13	13	17	12	16	54	33	13	45	18
4	57	13	15	12	17	13	152	55	22	12	45	15
5	28	15	13	12	14	13	99	194	19	48	24	14

6	18	14	13	13	14	13	46	67	19	67	39	12
7	17	15	13	13	13	14	43	45	17	43	34	12
8	15	14	13	13	12	15	35	35	29	43	21	12
9	15	14	14	13	12	16	31	283	25	35	17	12
10	15	15	13	13	12	15	29	116	20	31	15	12

11	14	14	13	12	13	15	25	215	18	20	18	11
12	14	14	14	12	12	36	23	72	17	16	16	13
13	14	14	14	13	12	39	21	43	17	14	14	12
14	14	15	13	13	12	26	21	45	15	15	14	29
15	15	20	13	13	12	23	20	34	14	119	14	16

16	13	15	13	13	12	22	20	29	15	33	13	13
17	15	14	14	13	14	22	19	24	14	50	14	13
18	15	14	107	13	12	20	19	21	21	83	13	11
19	14	17	81	13	13	21	18	21	20	30	12	12
20	13	13	32	13	13	30	20	56	15	26	12	11

21	14	18	22	9.8	14	24	18	24	14	177	13	11
22	13	17	18	13	13	20	17	20	14	47	13	21
23	13	13	17	12	12	18	17	18	14	28	12	14
24	14	13	15	12	12	18	17	17	13	21	11	13
25	18	13	14	12	12	20	18	16	12	18	12	12

26	15	13	14	12	12	18	16	16	13	16	13	33
27	14	13	14	12	12	18	16	17	13	15	12	24
28	15	13	13	12	13	35	17	35	13	18	11	15
29	13	13	12	12	---	28	17	26	14	16	21	15
30	14	14	15	13	---	21	59	49	12	14	14	13

31	14	---	14	13	---	20	---	73	---	14	15	---

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 2003, BY WATER YEAR (WY)
MEAN	16.0	19.2	19.2	18.3	22.4	31.7	35.7	27.7	21.4	18.3	17.7	17.2
MAX	100	69.6	86.6	59.8	98.8	110	95.0	90.9	68.1	67.7	66.8	106
(WY)	1955	1991	1983	1993	1997	1979	1983	1996	1993	1996	1987	1961
MIN	2.30	2.37	2.83	2.44	4.05	5.88	7.00	4.94	5.64	4.94	4.65	3.01
(WY)	1954	1954	1959	1956	1963	1957	1971	1958	1956	1952	1953	1954

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR		FOR 2003 WATER YEAR		WATER YEARS 1951 - 2003
ANNUAL TOTAL	10266		8663.8
ANNUAL MEAN	28.1		23.7		22.0
HIGHEST ANNUAL MEAN					39.6	1983
LOWEST ANNUAL MEAN					7.79	1953
HIGHEST DAILY MEAN	397	May 12	283	May 9	1040	Jul 18 1996
LOWEST DAILY MEAN	12	Dec 29	9.8	Jan 21	0.10	Dec 9 1957
ANNUAL SEVEN-DAY MINIMUM	13	Nov 23	12	Jan 21	1.0	Feb 3 1959
MAXIMUM PEAK FLOW			600	May 9	2680	Sep 14 1961
MAXIMUM PEAK STAGE			7.16	May 9	13.71 A	Sep 14 1961
INSTANTANEOUS LOW FLOW			2.4	Jan 21
10 PERCENT EXCEEDS	49		43		41
50 PERCENT EXCEEDS	17		15		14
90 PERCENT EXCEEDS	14		12		4.5

A - Present datum.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	16	14	13	12	15	12	18	240	29	13	51	58
2	22	14	13	12	14	12	17	96	23	13	35	28
3	16	13	13	13	17	12	16	54	33	13	45	18
4	57	13	15	12	17	13	152	55	22	12	45	15
5	28	15	13	12	14	13	99	194	19	48	24	14

6	18	14	13	13	14	13	46	67	19	67	39	12
7	17	15	13	13	13	14	43	45	17	43	34	12
8	15	14	13	13	12	15	35	35	29	43	21	12
9	15	14	14	13	12	16	31	283	25	35	17	12
10	15	15	13	13	12	15	29	116	20	31	15	12

11	14	14	13	12	13	15	25	215	18	20	18	11
12	14	14	14	12	12	36	23	72	17	16	16	13
13	14	14	14	13	12	39	21	43	17	14	14	12
14	14	15	13	13	12	26	21	45	15	15	14	29
15	15	20	13	13	12	23	20	34	14	119	14	16

16	13	15	13	13	12	22	20	29	15	33	13	13
17	15	14	14	13	14	22	19	24	14	50	14	13
18	15	14	107	13	12	20	19	21	21	83	13	11
19	14	17	81	13	13	21	18	21	20	30	12	12
20	13	13	32	13	13	30	20	56	15	26	12	11

21	14	18	22	9.8	14	24	18	24	14	177	13	11
22	13	17	18	13	13	20	17	20	14	47	13	21
23	13	13	17	12	12	18	17	18	14	28	12	14
24	14	13	15	12	12	18	17	17	13	21	11	13
25	18	13	14	12	12	20	18	16	12	18	12	12

26	15	13	14	12	12	18	16	16	13	16	13	33
27	14	13	14	12	12	18	16	17	13	15	12	24
28	15	13	13	12	13	35	17	35	13	18	11	15
29	13	13	12	12	---	28	17	26	14	16	21	15
30	14	14	15	13	---	21	59	49	12	14	14	13

31	14	---	14	13	---	20	---	73	---	14	15	---

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	16	14	13	12	15	12	18	240	29	13	51	58
2	22	14	13	12	14	12	17	96	23	13	35	28
3	16	13	13	13	17	12	16	54	33	13	45	18
4	57	13	15	12	17	13	152	55	22	12	45	15
5	28	15	13	12	14	13	99	194	19	48	24	14

6	18	14	13	13	14	13	46	67	19	67	39	12
7	17	15	13	13	13	14	43	45	17	43	34	12
8	15	14	13	13	12	15	35	35	29	43	21	12
9	15	14	14	13	12	16	31	283	25	35	17	12
10	15	15	13	13	12	15	29	116	20	31	15	12

11	14	14	13	12	13	15	25	215	18	20	18	11
12	14	14	14	12	12	36	23	72	17	16	16	13
13	14	14	14	13	12	39	21	43	17	14	14	12
14	14	15	13	13	12	26	21	45	15	15	14	29
15	15	20	13	13	12	23	20	34	14	119	14	16

16	13	15	13	13	12	22	20	29	15	33	13	13
17	15	14	14	13	14	22	19	24	14	50	14	13
18	15	14	107	13	12	20	19	21	21	83	13	11
19	14	17	81	13	13	21	18	21	20	30	12	12
20	13	13	32	13	13	30	20	56	15	26	12	11

21	14	18	22	9.8	14	24	18	24	14	177	13	11
22	13	17	18	13	13	20	17	20	14	47	13	21
23	13	13	17	12	12	18	17	18	14	28	12	14
24	14	13	15	12	12	18	17	17	13	21	11	13
25	18	13	14	12	12	20	18	16	12	18	12	12

26	15	13	14	12	12	18	16	16	13	16	13	33
27	14	13	14	12	12	18	16	17	13	15	12	24
28	15	13	13	12	13	35	17	35	13	18	11	15
29	13	13	12	12	---	28	17	26	14	16	21	15
30	14	14	15	13	---	21	59	49	12	14	14	13

31	14	---	14	13	---	20	---	73	---	14	15	---

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	16	14	13	12	15	12	18	240	29	13	51	58
2	22	14	13	12	14	12	17	96	23	13	35	28
3	16	13	13	13	17	12	16	54	33	13	45	18
4	57	13	15	12	17	13	152	55	22	12	45	15
5	28	15	13	12	14	13	99	194	19	48	24	14

6	18	14	13	13	14	13	46	67	19	67	39	12
7	17	15	13	13	13	14	43	45	17	43	34	12
8	15	14	13	13	12	15	35	35	29	43	21	12
9	15	14	14	13	12	16	31	283	25	35	17	12
10	15	15	13	13	12	15	29	116	20	31	15	12

11	14	14	13	12	13	15	25	215	18	20	18	11
12	14	14	14	12	12	36	23	72	17	16	16	13
13	14	14	14	13	12	39	21	43	17	14	14	12
14	14	15	13	13	12	26	21	45	15	15	14	29
15	15	20	13	13	12	23	20	34	14	119	14	16

16	13	15	13	13	12	22	20	29	15	33	13	13
17	15	14	14	13	14	22	19	24	14	50	14	13
18	15	14	107	13	12	20	19	21	21	83	13	11
19	14	17	81	13	13	21	18	21	20	30	12	12
20	13	13	32	13	13	30	20	56	15	26	12	11

21	14	18	22	9.8	14	24	18	24	14	177	13	11
22	13	17	18	13	13	20	17	20	14	47	13	21
23	13	13	17	12	12	18	17	18	14	28	12	14
24	14	13	15	12	12	18	17	17	13	21	11	13
25	18	13	14	12	12	20	18	16	12	18	12	12

26	15	13	14	12	12	18	16	16	13	16	13	33
27	14	13	14	12	12	18	16	17	13	15	12	24
28	15	13	13	12	13	35	17	35	13	18	11	15
29	13	13	12	12	---	28	17	26	14	16	21	15
30	14	14	15	13	---	21	59	49	12	14	14	13

31	14	---	14	13	---	20	---	73	---	14	15	---