05539900 DATA: Discharge Tables, 2001

ILLINOIS RIVER BASIN

05539900 WEST BRANCH DU PAGE RIVER NEAR WEST CHICAGO, IL

LOCATION.-- Lat 41°54'39", long 88°10'44", in SE1/4NW1/4 sec.35, T.40 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on left bank at downstream side of bridge on State Highway 64, 2 mi northeast of West Chicago, and at mile 49.2.

DRAINAGE AREA.-- 28.5 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: July 1961 to current year.

STAGE: Water years 1994-2001.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1979-91.

REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-77-1: 1966-67(M).

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 717.76 ft above sea level.

REMARKS.-- Diurnal fluctuation at low flow caused by sewage-treatment plant upstream from station.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 984 ft³/s, Dec. 3, 1982, gage height, 10.44 ft; maximum gage height, 10.78 ft, Feb. 21, 1997; minimum discharge, .20 ft³/s, July 1, 5, 8-12, 1963.

REMARKS FOR CURRENT YEAR.-- Records poor.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	25	15	e26	e20	103	38	23	21	110	17	20	68
2	25	21	e26	e20	85	29	20	19	193	17	22	40
3	26	20	e25	e20	62	27	15	15	94	18	19	32
4	175	17	e25	20	53	18	13	16	67	18	19	30
5	86	16	e25	21	45	17	17	16	201	16	18	24

6	76	32	e24	22	40	15	90	18	159	16	17	26
7	48	232	e22	23	44	13	67	44	99	28	18	72
8	38	86	e21	23	102	13	38	36	74	23	16	32
9	34	264	e22	21	531	9.9	52	25	59	20	12	44
10	31	278	e22	22	307	10	38	102	48	19	56	49

11	26	118	e23	22	125	16	37	353	43	11	25	28
12	24	91	e22	22	86	26	82	137	55	10	18	20
13	22	91	e20	26	63	32	44	92	39	9.7	22	18
14	22	76	e21	44	96	23	35	76	30	13	18	16
15	23	59	e22	91	84	70	55	64	41	14	15	14

16	28	55	e23	89	51	115	41	56	30	14	71	14
17	23	44	e22	70	32	100	31	58	23	24	36	15
18	21	38	e22	61	24	93	31	42	59	25	27	32
19	19	31	e21	51	20	74	38	32	34	18	28	623
20	20	30	e20	41	18	54	44	27	25	18	22	554

21	22	25	e19	35	15	46	45	56	32	45	19	560
22	23	23	e19	31	16	38	41	41	30	158	47	372
23	25	23	e19	29	14	33	57	34	24	102	103	283
24	29	21	e18	28	104	29	56	25	22	65	41	243
25	23	21	e18	24	302	23	39	25	20	94	146	149

26	21	41	e19	23	98	21	33	56	18	58	109	119
27	19	36	e19	24	61	19	29	98	17	36	53	95
28	17	27	e19	24	42	17	29	71	17	29	44	72
29	17	27	e18	42	---	15	23	45	18	26	30	49
30	17	e27	e18	206	---	17	22	32	18	24	33	37

31	15	---	e19	147	---	19	---	41	---	21	226	---

TOTAL	1020	1885	659	1342	2623	1069.9	1185	1773	1699	1006.7	1350	3730
MEAN	32.9	62.8	21.3	43.3	93.7	34.5	39.5	57.2	56.6	32.5	43.5	124
MAX	175	278	26	206	531	115	90	353	201	158	226	623
MIN	15	15	18	20	14	9.9	13	15	17	9.7	12	14
CFSM	1.15	2.20	.75	1.52	3.29	1.21	1.39	2.01	1.99	1.14	1.53	4.36
IN.	1.33	2.46	.86	1.75	3.42	1.40	1.55	2.31	2.22	1.31	1.76	4.87

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1961 - 2001, BY WATER YEAR (WY)
MEAN	24.3	33.3	33.8	30.9	39.7	53.0	62.0	45.1	38.3	26.7	29.2	30.3
MAX	68.0	111	134	81.5	118	191	135	113	103	63.8	135	124
(WY)	1987	1986	1983	1999	1997	1979	1983	1996	1996	1993	1987	2001
MIN	1.54	1.62	.97	.87	.75	12.3	14.7	13.9	2.02	5.36	1.50	1.22
(WY)	1964	1963	1963	1963	1963	1968	1963	1971	1963	1966	1961	1962

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1961 - 2001
ANNUAL TOTAL	14162		19342.6
ANNUAL MEAN	38.7		53.0		37.2
HIGHEST ANNUAL MEAN					58.1	1993
LOWEST ANNUAL MEAN					6.41	1963
HIGHEST DAILY MEAN	418	Sep 12	623	Sep 19	817	Dec 3 1982
LOWEST DAILY MEAN	14	A	9.7	Jul 13	.20	Jul 5 1963
ANNUAL SEVEN-DAY MINIMUM	15	Jul 21	13	Jul 10	.26	Jul 5 1963
MAXIMUM PEAK FLOW			825	Sep 19	984 B	Dec 3 1982
MAXIMUM PEAK STAGE			10.36	Sep 19	10.78	Feb 21 1997
INSTANTANEOUS LOW FLOW			5.2	Jul 14	.20	C
ANNUAL RUNOFF (CFSM)	1.36		1.86		1.30
ANNUAL RUNOFF (INCHES)	18.49		25.25		17.72
10 PERCENT EXCEEDS	72		101		76
50 PERCENT EXCEEDS	25		28		23
90 PERCENT EXCEEDS	16		17		7.6

	A - Several days.
	B - Gage height, 10.44 ft.
	C - July 1, 5, 8-12, 1963.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	25	15	e26	e20	103	38	23	21	110	17	20	68
2	25	21	e26	e20	85	29	20	19	193	17	22	40
3	26	20	e25	e20	62	27	15	15	94	18	19	32
4	175	17	e25	20	53	18	13	16	67	18	19	30
5	86	16	e25	21	45	17	17	16	201	16	18	24

6	76	32	e24	22	40	15	90	18	159	16	17	26
7	48	232	e22	23	44	13	67	44	99	28	18	72
8	38	86	e21	23	102	13	38	36	74	23	16	32
9	34	264	e22	21	531	9.9	52	25	59	20	12	44
10	31	278	e22	22	307	10	38	102	48	19	56	49

11	26	118	e23	22	125	16	37	353	43	11	25	28
12	24	91	e22	22	86	26	82	137	55	10	18	20
13	22	91	e20	26	63	32	44	92	39	9.7	22	18
14	22	76	e21	44	96	23	35	76	30	13	18	16
15	23	59	e22	91	84	70	55	64	41	14	15	14

16	28	55	e23	89	51	115	41	56	30	14	71	14
17	23	44	e22	70	32	100	31	58	23	24	36	15
18	21	38	e22	61	24	93	31	42	59	25	27	32
19	19	31	e21	51	20	74	38	32	34	18	28	623
20	20	30	e20	41	18	54	44	27	25	18	22	554

21	22	25	e19	35	15	46	45	56	32	45	19	560
22	23	23	e19	31	16	38	41	41	30	158	47	372
23	25	23	e19	29	14	33	57	34	24	102	103	283
24	29	21	e18	28	104	29	56	25	22	65	41	243
25	23	21	e18	24	302	23	39	25	20	94	146	149

26	21	41	e19	23	98	21	33	56	18	58	109	119
27	19	36	e19	24	61	19	29	98	17	36	53	95
28	17	27	e19	24	42	17	29	71	17	29	44	72
29	17	27	e18	42	---	15	23	45	18	26	30	49
30	17	e27	e18	206	---	17	22	32	18	24	33	37

31	15	---	e19	147	---	19	---	41	---	21	226	---

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	25	15	e26	e20	103	38	23	21	110	17	20	68
2	25	21	e26	e20	85	29	20	19	193	17	22	40
3	26	20	e25	e20	62	27	15	15	94	18	19	32
4	175	17	e25	20	53	18	13	16	67	18	19	30
5	86	16	e25	21	45	17	17	16	201	16	18	24

6	76	32	e24	22	40	15	90	18	159	16	17	26
7	48	232	e22	23	44	13	67	44	99	28	18	72
8	38	86	e21	23	102	13	38	36	74	23	16	32
9	34	264	e22	21	531	9.9	52	25	59	20	12	44
10	31	278	e22	22	307	10	38	102	48	19	56	49

11	26	118	e23	22	125	16	37	353	43	11	25	28
12	24	91	e22	22	86	26	82	137	55	10	18	20
13	22	91	e20	26	63	32	44	92	39	9.7	22	18
14	22	76	e21	44	96	23	35	76	30	13	18	16
15	23	59	e22	91	84	70	55	64	41	14	15	14

16	28	55	e23	89	51	115	41	56	30	14	71	14
17	23	44	e22	70	32	100	31	58	23	24	36	15
18	21	38	e22	61	24	93	31	42	59	25	27	32
19	19	31	e21	51	20	74	38	32	34	18	28	623
20	20	30	e20	41	18	54	44	27	25	18	22	554

21	22	25	e19	35	15	46	45	56	32	45	19	560
22	23	23	e19	31	16	38	41	41	30	158	47	372
23	25	23	e19	29	14	33	57	34	24	102	103	283
24	29	21	e18	28	104	29	56	25	22	65	41	243
25	23	21	e18	24	302	23	39	25	20	94	146	149

26	21	41	e19	23	98	21	33	56	18	58	109	119
27	19	36	e19	24	61	19	29	98	17	36	53	95
28	17	27	e19	24	42	17	29	71	17	29	44	72
29	17	27	e18	42	---	15	23	45	18	26	30	49
30	17	e27	e18	206	---	17	22	32	18	24	33	37

31	15	---	e19	147	---	19	---	41	---	21	226	---

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	25	15	e26	e20	103	38	23	21	110	17	20	68
2	25	21	e26	e20	85	29	20	19	193	17	22	40
3	26	20	e25	e20	62	27	15	15	94	18	19	32
4	175	17	e25	20	53	18	13	16	67	18	19	30
5	86	16	e25	21	45	17	17	16	201	16	18	24

6	76	32	e24	22	40	15	90	18	159	16	17	26
7	48	232	e22	23	44	13	67	44	99	28	18	72
8	38	86	e21	23	102	13	38	36	74	23	16	32
9	34	264	e22	21	531	9.9	52	25	59	20	12	44
10	31	278	e22	22	307	10	38	102	48	19	56	49

11	26	118	e23	22	125	16	37	353	43	11	25	28
12	24	91	e22	22	86	26	82	137	55	10	18	20
13	22	91	e20	26	63	32	44	92	39	9.7	22	18
14	22	76	e21	44	96	23	35	76	30	13	18	16
15	23	59	e22	91	84	70	55	64	41	14	15	14

16	28	55	e23	89	51	115	41	56	30	14	71	14
17	23	44	e22	70	32	100	31	58	23	24	36	15
18	21	38	e22	61	24	93	31	42	59	25	27	32
19	19	31	e21	51	20	74	38	32	34	18	28	623
20	20	30	e20	41	18	54	44	27	25	18	22	554

21	22	25	e19	35	15	46	45	56	32	45	19	560
22	23	23	e19	31	16	38	41	41	30	158	47	372
23	25	23	e19	29	14	33	57	34	24	102	103	283
24	29	21	e18	28	104	29	56	25	22	65	41	243
25	23	21	e18	24	302	23	39	25	20	94	146	149

26	21	41	e19	23	98	21	33	56	18	58	109	119
27	19	36	e19	24	61	19	29	98	17	36	53	95
28	17	27	e19	24	42	17	29	71	17	29	44	72
29	17	27	e18	42	---	15	23	45	18	26	30	49
30	17	e27	e18	206	---	17	22	32	18	24	33	37

31	15	---	e19	147	---	19	---	41	---	21	226	---