05540250 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05540250 EAST BRANCH DU PAGE RIVER AT BOLINGBROOK, IL

LOCATION.-- Lat 41°43'05", long 88°04'14", in NE1/4SE1/4 sec.3, T.37 N., R.10 E., Will County, Hydrologic Unit 07120004, on downstream side of bridge on Royce Road, 0.5 mi north of Bolingbrook, 4.8 mi northwest of Lemont, and at mile 6.0.

DRAINAGE AREA.-- 75.8 mi².

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

DISCHARGE: October 1988 to current year.

STAGE: Water years 1994-2001.

PARTIAL RECORD: Annual maximum gage height, water years 1962-70 (published as "at Barbers Corners").

PRECIPITATION: May 1989 to September 1995.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 625.28 ft above sea level. Prior to Oct. 1, 1988, at datum 17.07 ft higher.

REMARKS.-- Diurnal fluctuation at low flow caused by sewage treatment plants upstream from station. For precipitation records, snowfall-affected data can result during cold weather when snow fills the rain-gage funnel and then melts as temperatures rise. Snowfall-affected data are subject to appreciable errors.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,980 ft³/s, July 18, 1996, gage height, 23.75 ft; minimum discharge, 2.4 ft³/s, Aug. 5, 1993.
PRECIPITATION: Maximum recorded, 3.80 in., May 9, 1990 but may have been greater during periods of missing record.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are 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	59	46	60	47	216	137	80	85	183	40	49	126
2	60	56	56	47	e170	121	77	81	161	41	82	104
3	59	57	53	48	e122	110	70	76	143	51	78	75
4	238	47	53	49	94	100	67	70	114	51	58	68
5	180	48	49	51	e87	95	68	66	177	44	51	60

6	125	62	46	e50	e82	88	226	63	231	41	47	69
7	95	261	42	e50	e78	83	218	83	165	43	44	196
8	81	158	39	e50	e200	80	166	80	126	43	45	103
9	70	289	38	52	e900	79	151	68	107	45	44	97
10	65	406	40	52	855	80	127	73	92	43	69	96

11	64	262	45	51	439	82	114	137	81	41	53	74
12	62	163	45	51	272	93	162	119	118	42	47	64
13	60	160	41	54	192	105	128	94	103	38	57	62
14	60	136	44	86	204	88	105	83	80	37	51	54
15	58	98	44	176	221	130	185	81	73	35	47	47

16	59	80	47	179	184	235	182	79	62	39	97	48
17	56	67	e46	140	150	241	138	69	56	40	77	51
18	55	56	e44	120	124	232	115	63	61	42	67	52
19	60	54	e47	104	116	197	104	56	62	42	70	312
20	61	59	e46	88	110	171	143	53	56	42	60	313

21	58	55	e46	79	99	153	279	71	61	52	54	356
22	58	51	e45	76	94	135	251	69	61	146	58	276
23	55	50	e44	70	89	114	206	68	52	144	62	250
24	58	47	e44	66	205	105	244	64	48	137	66	375
25	55	50	42	61	531	93	191	76	49	322	201	219

26	48	93	42	60	356	90	159	143	46	167	257	143
27	55	80	e42	60	235	86	129	234	43	91	134	108
28	53	67	43	59	168	84	111	180	48	67	91	89
29	53	69	44	90	---	79	98	144	47	59	71	76
30	53	67	46	337	---	76	92	105	43	56	63	71

31	51	---	47	298	---	73	---	92	---	53	146	---

TOTAL	2224	3194	1410	2801	6593	3635	4386	2825	2749	2134	2396	4034
MEAN	71.7	106	45.5	90.4	235	117	146	91.1	91.6	68.8	77.3	134
MAX	238	406	60	337	900	241	279	234	231	322	257	375
MIN	48	46	38	47	78	73	67	53	43	35	44	47
CFSM	.95	1.40	.60	1.19	3.11	1.55	1.93	1.20	1.21	.91	1.02	1.77
IN.	1.09	1.57	.69	1.37	3.24	1.78	2.15	1.39	1.35	1.05	1.18	1.98

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 2001, BY WATER YEAR (WY)
MEAN	76.4	111	82.5	110	123	132	162	145	128	93.0	86.3	79.7
MAX	157	179	135	263	306	208	358	286	239	299	155	134
(WY)	1999	1991	1995	1993	1997	1993	1993	1990	1993	1996	1998	2001
MIN	38.4	40.9	23.5	49.5	42.2	52.5	50.5	43.5	43.6	41.7	38.0	41.1
(WY)	1990	2000	1990	2000	1989	2000	1989	1992	1992	1991	1991	1991

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1989 - 2001
ANNUAL TOTAL	36980		38381
ANNUAL MEAN	101		105		111
HIGHEST ANNUAL MEAN					152	1993
LOWEST ANNUAL MEAN					76.9	1989
HIGHEST DAILY MEAN	901	Apr 21	900 A	Feb 9	2700	Jul 18 1996
LOWEST DAILY MEAN	32	Mar 14	35	Jul 15	12	Aug 5 1993
ANNUAL SEVEN-DAY MINIMUM	35	Mar 31	39	Jul 11	18	Aug 16 1992
MAXIMUM PEAK FLOW			1070	Feb 9	3980	Jul 18 1996
MAXIMUM PEAK STAGE			20.56	Feb 9	23.75	Jul 18 1996
INSTANTANEOUS LOW FLOW			27	Jul 13	2.4	Aug 5 1993
ANNUAL RUNOFF (CFSM)	1.33		1.39		1.46
ANNUAL RUNOFF (INCHES)	18.15		18.84		19.81
10 PERCENT EXCEEDS	211		205		216
50 PERCENT EXCEEDS	61		73		72
90 PERCENT EXCEEDS	44		45		37

	A - Estimated