05540130 DATA: Discharge Tables, 1999

Station list Available data
ILLINOIS RIVER BASIN

05540130 WEST BRANCH DU PAGE RIVER NEAR NAPERVILLE, IL

LOCATION.--Lat 41°43'13", long 88°07'55", in SW1/4NE1/4 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 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	103	120	128	e47	264	199	90	381	186	224	45	44
2	90	103	91	e49	330	173	93	294	725	181	41	40
3	146	90	78	e50	365	185	88	247	531	124	36	38
4	106	83	72	e58	289	160	101	213	281	98	33	39
5	183	74	68	e62	231	145	98	186	216	76	35	36

6	250	67	162	e63	218	162	99	227	177	66	35	33
7	200	64	429	e64	205	158	92	233	146	61	42	38
8	136	65	274	e63	179	145	106	183	130	54	48	37
9	102	68	187	e62	164	145	519	156	115	116	39	32
10	80	523	148	e62	152	153	465	138	106	153	38	36

11	67	577	122	e62	176	154	297	173	209	93	37	35
12	61	315	106	e61	293	155	202	663	434	71	61	40
13	57	220	98	e62	213	164	162	509	700	58	66	60
14	50	173	92	e62	170	161	139	323	1250	50	50	51
15	50	143	84	e67	150	172	181	237	843	47	40	43

16	49	124	74	e70	138	226	721	195	421	44	37	40
17	413	110	70	e100	132	417	693	405	299	53	36	40
18	1450	99	68	e130	119	426	416	392	231	55	33	38
19	1330	90	e64	e84	113	308	297	272	190	74	122	38
20	625	78	63	e94	102	238	226	201	160	87	73	43

21	353	70	61	e220	94	199	217	201	134	171	50	43
22	252	71	e60	e1070	93	173	405	740	138	139	44	40
23	200	67	e59	1680	90	154	1580	598	140	106	48	41
24	159	65	e58	1770	87	139	1500	392	170	178	122	40
25	130	61	e55	1130	92	134	737	273	107	128	190	40

26	112	60	e56	596	100	122	466	206	91	97	163	41
27	127	60	e57	452	197	112	726	168	182	79	101	58
28	235	57	e58	487	236	106	1210	144	220	61	73	349
29	172	56	52	383	---	103	919	126	162	56	59	500
30	163	97	e50	323	---	97	512	111	112	52	50	274

31	144	---	e50	278	---	90	---	106	---	49	48	---

TOTAL	7595	3850	3094	9761	4992	5475	13357	8693	8806	2901	1895	2227
MEAN	245	128	99.8	315	178	177	445	280	294	93.6	61.1	74.2
MAX	1450	577	429	1770	365	426	1580	740	1250	224	190	500
MIN	49	56	50	47	87	90	88	106	91	44	33	32
CFSM	1.99	1.04	.81	2.56	1.45	1.44	3.62	2.28	2.39	.76	.50	.60
IN.	2.30	1.16	.94	2.95	1.51	1.66	4.04	2.63	2.66	.88	.57	.67

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 1999, BY WATER YEAR (WY)
MEAN	94.6	157	114	164	178	196	247	227	178	126	119	94.1
MAX	245	290	187	315	518	316	449	449	368	456	174	229
(WY)	1999	1996	1991	1999	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 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1989 - 1999
ANNUAL TOTAL	68136		72646
ANNUAL MEAN	187		199		158
HIGHEST ANNUAL MEAN					200	1993
LOWEST ANNUAL MEAN					110	1989
HIGHEST DAILY MEAN	1650	May 8	1770	Jan 24	4960	Jul 18 1996
LOWEST DAILY MEAN	35	Sep 28	32	Sep 9	16	Oct 13 1989
ANNUAL SEVEN-DAY MINIMUM	40	Sep 23	35	Sep 5	19	Jun 3 1994
INSTANTANEOUS PEAK FLOW			1960 A	Jan 23	6620	Jul 18 1996
INSTANTANEOUS PEAK STAGE			9.81 B	Jan 22	14.31	Jul 18 1996
INSTANTANEOUS LOW FLOW			29	Sep 6,9	18	C
ANNUAL RUNOFF (CFSM)	1.52		1.62		1.28
ANNUAL RUNOFF (INCHES)	20.61		21.97		17.40
10 PERCENT EXCEEDS	417		427		322
50 PERCENT EXCEEDS	118		119		93
90 PERCENT EXCEEDS	56		44		40

A - Gage height, 9.30 ft.
B - Ice jam.
C - June 12, 1992 and June 3-8, 1994.