USGS CD-ROM: Current Year Discharge

05540095 WEST BRANCH DU PAGE RIVER NEAR WARRENVILLE, IL

LOCATION.--Lat 41°49'22", long 88°10'23", in SW¼NE¼ sec.35, T.39 N., R.9 E., Du Page County, Hydrologic Unit 07120004, on right bank 400 ft upstream from Warrenville Forest Preserve Dam in Warrenville, 0.6 mi downstream from Spring Brook, and at mile 38.9.

DRAINAGE AREA.--90.4 mi².

PERIOD OF RECORD.--October 1968 to current year.

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

GAGE.--Water-stage recorder, crest-stage gage and masonry dam. Datum of gage is 688.59 ft above sea level (Illinois Department of Transportation bench mark).

REMARKS.--Records good except those for estimated daily discharges, which are poor. Flow slightly regulated by sewage-treatment plants upstream. Gage-height telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Oct. 11, 1954, reached a stage of 5.54 ft, from floodmark, discharge not determined.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	37	47	84	62	140	88	440	117	50	59	37	51
2	36	45	65	64	342	80	343	107	49	49	35	45
3	36	45	62	177	277	81	231	97	49	85	37	44
4	43	45	e60	352	204	89	182	94	53	614	115	42
5	47	41	e58	429	159	90	143	91	51	262	211	39

6	e42	61	57	444	131	87	120	114	51	164	268	37
7	41	63	52	465	113	89	115	636	49	184	226	533
8	46	51	52	373	109	197	466	1420	45	189	276	250
9	47	49	53	347	97	474	547	929	110	119	150	122
10	44	46	60	266	90	351	352	438	102	92	100	82

11	35	44	e88	187	206	258	225	272	264	70	74	64
12	34	42	90	152	353	182	172	207	293	61	58	53
13	72	42	74	118	239	147	147	173	146	56	52	50
14	75	41	66	102	191	148	161	141	101	49	51	54
15	51	46	62	92	145	131	146	121	82	47	50	152

16	46	59	59	87	125	123	400	108	68	47	47	93
17	40	55	60	80	178	177	259	86	68	47	46	68
18	40	51	62	73	195	667	188	75	69	45	44	56
19	39	51	63	69	158	771	151	67	154	65	44	51
20	39	52	58	66	138	455	156	63	95	66	44	47

21	37	56	56	63	121	308	381	60	72	54	44	46
22	37	56	57	63	109	222	400	57	57	52	42	41
23	37	56	63	68	98	172	242	55	48	50	41	38
24	40	55	68	68	99	139	181	122	45	44	47	38
25	47	53	91	63	101	119	151	87	43	39	266	44

26	53	54	105	61	88	109	168	70	150	38	212	40
27	224	59	90	66	99	98	173	61	96	40	99	37
28	133	96	75	68	96	109	127	67	104	40	117	36
29	87	87	67	91	---	104	136	78	97	37	109	36
30	63	107	66	115	---	88	130	63	75	37	74	52

31	53	---	62	114	---	226	---	57	---	38	59	---

TOTAL	1701	1655	2085	4845	4401	6379	7033	6133	2736	2839	3075	2341
MEAN	54.9	55.2	67.3	156	157	206	234	198	91.2	91.6	99.2	78.0
MAX	224	107	105	465	353	771	547	1420	293	614	276	533
MIN	34	41	52	61	88	80	115	55	43	37	35	36
CFSM	.61	.61	.74	1.73	1.74	2.28	2.59	2.19	1.01	1.01	1.10	.86
IN.	.70	.68	.86	1.99	1.81	2.62	2.89	2.52	1.13	1.17	1.27	.96

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 1998, BY WATER YEAR (WY)
MEAN	59.6	93.2	98.5	83.3	109	161	178	135	108	77.4	91.1	72.9
MAX	181	276	354	246	374	588	396	295	300	283	512	261
(WY)	1973	1986	1983	1993	1997	1979	1983	1974	1996	1996	1987	1972
MIN	12.6	16.5	15.1	12.6	21.7	56.8	42.1	39.6	27.0	18.5	17.8	14.8
(WY)	1972	1977	1977	1977	1972	1969	1986	1988	1971	1971	1971	1971

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1969 - 1998
ANNUAL TOTAL	39917		45223
ANNUAL MEAN	109		124		106
HIGHEST ANNUAL MEAN					162	1993
LOWEST ANNUAL MEAN					35.1	1977
HIGHEST DAILY MEAN	2310	Feb 22	1420	May 8	2880	Aug 15 1987
LOWEST DAILY MEAN	34	A	34	Oct 12	7.8	B
ANNUAL SEVEN-DAY MINIMUM	36	Jul 27	37	Jul 28	10	Oct 20 1971
INSTANTANEOUS PEAK FLOW			1500	May 8	3470	Jul 18 1996
INSTANTANEOUS PEAK STAGE			3.98	May 8	6.41	Jul 18 1996
INSTANTANEOUS LOW FLOW			31	Oct 12
ANNUAL RUNOFF (CFSM)	1.21		1.37		1.17
ANNUAL RUNOFF (INCHES)	16.43		18.61		15.87
10 PERCENT EXCEEDS	189		263		224
50 PERCENT EXCEEDS	64		74		60
90 PERCENT EXCEEDS	40		42		26

A - Jul. 31-Aug. 1,2; Oct. 12
B - Sept. 14, 1971; Oct. 26, 1972.