05540095 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05540095 WEST BRANCH DU PAGE RIVER NEAR WARRENVILLE, IL

LOCATION.-- Lat 41°49'21", long 88°10'24", 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.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1968 to current year.

STAGE: Water years 1994-2001.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1977-91.

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

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

REMARKS.-- Flow slightly regulated by sewage- treatment plants upstream.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,470 ft³/s, July 18, 1996, gage height, 6.41 ft; minimum daily discharge, 7.8 ft³/s, Sept. 14, 1971, Oct. 26, 1972.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood of Oct. 11, 1954, reached a stage of 5.54 ft, from floodmark, discharge not determined.

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	33	30	75	54	250	160	78	75	248	39	36	205
2	33	35	69	54	158	129	75	71	413	36	44	106
3	35	39	67	53	117	116	70	65	275	38	44	74
4	296	35	68	55	96	100	66	62	177	38	38	65
5	209	34	64	55	87	90	69	59	459	37	36	54

6	133	47	63	55	75	81	252	58	594	35	34	55
7	85	387	64	e58	73	79	268	80	323	40	34	121
8	63	218	63	e58	116	77	169	89	216	44	35	79
9	53	406	59	e56	1240	72	150	70	161	40	32	74
10	47	696	60	e55	1260	70	136	107	123	37	55	89

11	42	348	e60	e56	594	82	132	569	102	34	42	67
12	38	207	58	e56	345	96	237	429	126	30	35	55
13	35	188	58	61	254	123	165	202	103	28	38	46
14	33	157	e58	83	289	103	131	145	82	28	37	43
15	32	122	59	153	330	160	170	126	88	30	34	39

16	34	106	e60	181	228	339	165	105	77	29	75	39
17	34	95	e60	149	170	300	134	93	65	31	70	43
18	31	86	59	126	137	291	117	84	75	39	56	49
19	34	81	e58	109	120	240	118	68	71	34	63	897
20	32	83	55	92	112	192	148	64	57	32	47	1260

21	30	73	54	82	99	160	178	87	59	39	41	970
22	29	67	e53	73	92	140	165	96	61	296	45	820
23	32	62	e53	68	86	122	228	83	54	279	94	516
24	35	62	e52	65	248	108	271	73	48	147	66	626
25	35	62	e50	62	803	96	190	121	46	136	157	330

26	34	91	e50	60	448	87	144	179	44	104	252	214
27	32	96	e51	61	256	83	122	281	41	68	135	163
28	30	85	52	59	181	79	106	203	40	55	88	121
29	30	84	e51	75	---	78	92	137	39	49	70	98
30	32	83	e52	388	---	76	82	104	38	45	59	77

31	32	---	e52	383	---	76	---	104	---	40	272	---

TOTAL	1683	4165	1807	2995	8264	4005	4428	4089	4305	1957	2164	7395
MEAN	54.3	139	58.3	96.6	295	129	148	132	144	63.1	69.8	246
MAX	296	696	75	388	1260	339	271	569	594	296	272	1260
MIN	29	30	50	53	73	70	66	58	38	28	32	39
CFSM	.60	1.54	.64	1.07	3.26	1.43	1.63	1.46	1.59	.70	.77	2.73
IN.	.69	1.71	.74	1.23	3.40	1.65	1.82	1.68	1.77	.81	.89	3.04

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 2001, BY WATER YEAR (WY)
MEAN	63.0	93.2	95.7	87.5	115	156	184	137	114	77.3	88.2	78.2
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 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1969 - 2001
ANNUAL TOTAL	36418		47257
ANNUAL MEAN	99.5		129		107
HIGHEST ANNUAL MEAN					162	1993
LOWEST ANNUAL MEAN					35.1	1977
HIGHEST DAILY MEAN	1480	Apr 21	1260	Feb 10,Sep 20	2880	Aug 15 1987
LOWEST DAILY MEAN	27	Sep 2,3	28	Jul 13,14	7.8	A
ANNUAL SEVEN-DAY MINIMUM	28	Sep 2	30	Jul 11	10	Oct 20 1971
MAXIMUM PEAK FLOW			1560	Feb 9	3470	Jul 18 1996
MAXIMUM PEAK STAGE			4.06	Feb 9	6.41	Jul 18 1996
INSTANTANEOUS LOW FLOW			22	Jul 14
ANNUAL RUNOFF (CFSM)	1.10		1.43		1.19
ANNUAL RUNOFF (INCHES)	14.99		19.45		16.13
10 PERCENT EXCEEDS	207		271		226
50 PERCENT EXCEEDS	59		75		61
90 PERCENT EXCEEDS	33		35		26

A - Sept. 14, 1971, Oct. 26, 1972.