USGS CD-ROM: Current Year Discharge

05540130 WEST BRANCH DU PAGE RIVER NEAR NAPERVILLE, IL

LOCATION.--Lat 41°43'13", long 88°07'55", in SW¼NE¼ sec.6, T.37 N., R.10 E., Will County, Hydrologic Unit 07120004, on downstream side of bridge on Washington Street, 3.5 mi southeast of Naperville, and at mile 29.3.

DRAINAGE AREA.--123 mi².

PERIOD OF RECORD.--October 1988 to current year.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 630.00 ft above sea level. Water years 1989 to 1995 datum incorrectly published as 625.28 ft above sea level.

REMARKS.--Records good except those for estimated daily discharges, which are poor. Gage-height telemeter and recording rain gage at station.

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	36	59	101	72	162	106	597	123	68	81	55	71
2	34	53	83	73	346	98	488	110	60	64	52	61
3	33	53	75	174	331	95	350	100	65	128	103	63
4	34	53	e70	398	252	115	275	96	57	765	1060	61
5	42	48	e66	499	206	114	223	111	56	369	568	52

6	37	67	64	515	173	105	190	170	55	219	436	48
7	37	85	58	510	151	106	196	882	54	401	296	892
8	36	63	51	479	143	225	537	1650	49	257	344	419
9	48	57	57	422	129	580	659	1210	206	164	210	211
10	44	51	79	e335	120	458	452	593	213	129	142	134

11	37	47	102	e286	257	339	285	376	395	100	109	95
12	36	44	105	e180	420	257	213	298	432	83	84	68
13	89	43	91	e150	296	224	182	275	228	76	74	56
14	114	43	77	e120	234	210	191	213	160	67	69	74
15	64	51	69	e115	184	182	172	185	125	61	71	193

16	55	63	67	e110	164	168	447	162	101	58	64	143
17	46	58	68	e96	206	264	348	141	90	57	59	98
18	44	52	69	e88	230	810	231	117	100	56	58	76
19	43	49	67	e83	197	912	181	107	194	98	56	61
20	41	49	64	e80	169	614	201	101	149	100	54	52

21	39	54	58	e78	150	416	397	94	106	74	54	49
22	35	54	62	e80	134	322	431	89	82	72	54	45
23	35	52	65	86	121	256	281	84	66	66	50	39
24	38	49	79	85	124	210	201	158	57	59	80	38
25	47	49	113	80	120	185	162	141	52	54	219	44

26	83	45	122	73	107	173	204	102	483	54	283	41
27	250	77	106	78	119	158	213	88	186	55	154	38
28	180	117	89	82	118	172	142	85	140	60	165	35
29	116	104	82	105	---	170	156	108	149	54	173	42
30	84	122	79	134	---	153	146	90	108	52	113	76

31	67	---	69	135	---	304	---	79	---	52	88	---

TOTAL	1924	1811	2407	5801	5363	8501	8751	8138	4286	3985	5397	3375
MEAN	62.1	60.4	77.6	187	192	274	292	263	143	129	174	113
MAX	250	122	122	515	420	912	659	1650	483	765	1060	892
MIN	33	43	51	72	107	95	142	79	49	52	50	35
CFSM	.50	.49	.63	1.52	1.56	2.23	2.37	2.13	1.16	1.05	1.42	.91
IN.	.58	.55	.73	1.75	1.62	2.57	2.65	2.46	1.30	1.21	1.63	1.02

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 1998, BY WATER YEAR (WY)
MEAN	79.5	160	116	148	177	198	227	222	166	129	125	96.1
MAX	157	290	187	289	518	316	449	449	368	456	174	229
(WY)	1992	1996	1991	1993	1997	1990	1993	1990	1996	1996	1998	1989
MIN	30.5	53.3	33.5	75.8	54.8	81.6	69.5	62.6	32.7	39.5	35.7	40.9
(WY)	1990	1990	1990	1994	1989	1996	1989	1989	1992	1991	1991	1991

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1989 - 1998
ANNUAL TOTAL	53488		59739
ANNUAL MEAN	147		164		153
HIGHEST ANNUAL MEAN					200	1993
LOWEST ANNUAL MEAN					110	1989
HIGHEST DAILY MEAN	3110	Feb 22	1650	May 8	4960	Jul 18 1996
LOWEST DAILY MEAN	32	Aug 2	33	Oct 3	16	Oct 13 1989
ANNUAL SEVEN-DAY MINIMUM	35	Sep 28	36	Oct 1	19	Jun 3 1994
INSTANTANEOUS PEAK FLOW			2020	Aug 4	6620	Jul 18 1996
INSTANTANEOUS PEAK STAGE			9.38	Aug 4	14.31	Jul 18 1996
INSTANTANEOUS LOW FLOW			29	Sep 23	18	A
ANNUAL RUNOFF (CFSM)	1.19		1.33		1.25
ANNUAL RUNOFF (INCHES)	16.18		18.07		16.95
10 PERCENT EXCEEDS	254		372		312
50 PERCENT EXCEEDS	89		101		91
90 PERCENT EXCEEDS	40		49		39

A - June 12, 1992 and June 3-8, 1994