05540095 DATA: Discharge Tables, 1999

Station list Available data
ILLINOIS RIVER BASIN

05540095 WEST BRANCH DU PAGE RIVER NEAR WARRENVILLE, IL

LOCATION.--Lat 41°49'22", long 88°10'23", in SW1/4NE1/4 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 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	69	98	96	43	203	141	58	292	141	154	41	33
2	54	88	70	29	273	121	60	207	677	123	39	30
3	98	78	63	e42	276	136	57	176	411	89	37	31
4	67	74	59	e43	217	110	64	154	225	70	36	31
5	137	67	57	e43	168	99	64	139	171	57	37	30

6	145	63	99	e45	163	109	68	164	136	56	38	28
7	120	62	356	e42	148	107	60	169	119	50	41	32
8	82	63	201	e42	126	100	61	135	108	47	44	29
9	64	64	130	43	116	102	430	113	93	123	40	28
10	53	471	101	44	105	105	331	98	93	106	39	29

11	49	495	82	44	125	108	209	103	155	72	39	29
12	48	238	73	e42	234	110	144	530	332	58	51	30
13	45	163	68	e41	155	119	117	377	648	52	54	45
14	42	128	65	e40	119	115	97	238	1050	48	47	36
15	41	106	61	e43	104	129	123	172	603	45	38	34

16	40	95	57	48	93	185	578	137	316	43	38	32
17	245	85	55	63	89	356	543	340	225	44	36	33
18	1210	79	56	142	80	321	299	302	174	47	36	30
19	1080	73	56	102	78	219	220	205	139	47	54	28
20	469	67	51	80	73	161	167	142	115	70	51	32

21	293	62	51	77	69	127	176	141	100	111	42	30
22	209	63	48	771	67	110	431	634	97	106	40	29
23	164	60	46	1410	65	94	1500	483	96	73	41	29
24	129	58	45	1510	65	85	1220	317	86	127	66	27
25	106	56	44	937	67	80	588	210	73	87	77	28

26	92	55	43	473	68	71	370	153	67	69	105	27
27	96	55	45	353	165	66	497	130	187	59	60	32
28	201	54	46	393	173	64	1050	111	167	50	45	212
29	130	55	48	293	---	63	722	97	118	47	40	347
30	139	79	42	247	---	58	395	85	84	45	38	169

31	118	---	44	210	---	55	---	90	---	43	35	---

TOTAL	5835	3254	2358	7735	3684	3826	10699	6644	7006	2218	1425	1560
MEAN	188	108	76.1	250	132	123	357	214	234	71.5	46.0	52.0
MAX	1210	495	356	1510	276	356	1500	634	1050	154	105	347
MIN	40	54	42	29	65	55	57	85	67	43	35	27
CFSM	2.08	1.20	.84	2.76	1.46	1.37	3.95	2.37	2.58	.79	.51	.58
IN.	2.40	1.34	.97	3.18	1.52	1.57	4.40	2.73	2.88	.91	.59	.64

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 1999, BY WATER YEAR (WY)
MEAN	63.8	93.7	97.8	88.7	110	160	184	138	112	77.3	89.6	72.2
MAX	188	276	354	250	374	588	396	295	300	283	512	261
(WY)	1999	1986	1983	1999	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 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1969 - 1999
ANNUAL TOTAL	51229		56244
ANNUAL MEAN	140		154		107
HIGHEST ANNUAL MEAN					162	1993
LOWEST ANNUAL MEAN					35.1	1977
HIGHEST DAILY MEAN	1420	May 8	1510	Jan 24	2880	Aug 15 1987
LOWEST DAILY MEAN	35	Aug 2	27	Sep 24, 26	7.8	B
ANNUAL SEVEN-DAY MINIMUM	37	Jul 28	29	Sep 20	10	Oct 20 1971
INSTANTANEOUS PEAK FLOW			1630	Jan 23, Apr. 23	3470	Jul 18 1996
INSTANTANEOUS PEAK STAGE			4.15	Jan 23, Apr. 23	6.41	Jul 18 1996
INSTANTANEOUS LOW FLOW			19 A	Jan 2
ANNUAL RUNOFF (CFSM)	1.55		1.70		1.19
ANNUAL RUNOFF (INCHES)	21.08		23.14		16.11
10 PERCENT EXCEEDS	283		343		225
50 PERCENT EXCEEDS	90		85		61
90 PERCENT EXCEEDS	44		38		26

A - Result of freezeup.
B - Sept. 14, 1971; Oct. 26, 1972.