05531500 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05531500 SALT CREEK AT WESTERN SPRINGS, IL

LOCATION.-- Lat 41°49'33", long 87°54'02", in NE1/4SE1/4 sec.31, T.39 N., R.12 E., Cook County, Hydrologic Unit 07120004, on left pier at upstream side of bridge on Wolf Road, in Cook County Forest Preserve, 0.5 mi north of Western Springs, and at mile 8.8.

DRAINAGE AREA.-- 115 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1945 to current year.

STAGE: Water years 1994-2001.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-91 and 1999 to current.

MISCELLANEOUS: Contaminants in streambed sediments, August 1998; contaminants in fish tissue, August 1998.

BIOLOGICAL

BENTHIC MACROINVERTEBRATES: Water year 1999.

FISH: Water year 1999 and 2000.

HABITAT: Water year 1999.

REVISED RECORDS.-- WSP 1915: Drainage area. WRD IL-87-2: Drainage area. WRD IL-97-2: July 21 - Sept. 26, 1996.

GAGE.-- Water-stage recorder, phone telemeter, crest-stage gage, and water-quality monitor. Datum of gage is 624.93 ft above sea level. Prior to July 26, 1946, nonrecording gage at same site and datum.

REMARKS.-- Occasional regulation by sewage treatment plants upstream from station. Since May 28, 1996, some flow temporarily diverted for flood control to Elmhurst Quarry Flood Control Reservoir 12.3 miles upstream from gage.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,540 ft³/s, Aug. 17, 1987, gage height, 10.54 ft; minimum, no flow, May 27, 1998, due to bridge construction.

REMARKS FOR CURRENT YEAR.-- Records good except those for Oct. 1-3 and July 31-Aug. 22, which are fair, and 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	88	67	112	e77	424	221	104	105	306	46	68	485
2	83	78	107	e78	287	190	107	92	409	56	200	223
3	85	82	99	e83	211	169	138	95	377	95	81	184
4	534	75	92	81	173	151	134	94	253	62	64	136
5	371	72	91	79	153	138	131	76	356	54	57	89

6	285	79	83	84	141	123	425	85	410	52	64	96
7	216	420	e81	87	132	115	322	139	317	92	77	268
8	178	410	e79	90	177	106	230	123	234	71	57	161
9	150	554	e76	87	1010	106	203	113	191	63	58	164
10	132	700	e77	85	1010	96	187	121	152	59	150	148

11	122	612	e77	86	901	111	181	410	128	53	129	135
12	115	377	e78	90	574	129	277	563	213	48	90	112
13	108	299	e78	95	356	153	261	391	188	48	99	78
14	99	246	e79	140	348	146	202	236	156	42	80	73
15	95	196	e79	237	391	197	261	194	128	41	71	61

16	100	162	e80	281	350	415	220	167	109	42	174	60
17	100	146	e80	246	297	459	184	154	95	53	161	60
18	96	122	e81	210	237	417	149	126	116	65	135	72
19	90	111	e82	182	185	355	138	103	127	55	178	707
20	93	108	e81	151	167	289	176	92	131	49	134	1020

21	84	103	e79	133	143	252	359	104	150	47	98	1100
22	81	95	e76	120	133	217	276	111	148	70	104	1010
23	84	87	e73	110	128	193	297	120	93	206	328	992
24	111	94	e71	103	295	172	389	113	78	144	480	802
25	110	85	e70	95	725	148	275	167	70	254	695	545

26	111	140	e69	92	655	129	218	233	75	197	610	386
27	107	136	e70	90	445	120	204	457	86	115	363	295
28	86	124	e70	87	281	108	169	355	65	78	242	248
29	79	117	e71	116	---	106	119	243	62	67	167	218
30	75	118	e72	455	---	104	112	176	59	61	123	194

31	72	---	e75	536	---	99	---	148	---	69	645	---

TOTAL	4140	6015	2488	4486	10329	5734	6448	5706	5282	2454	5982	10122
MEAN	134	200	80.3	145	369	185	215	184	176	79.2	193	337
MAX	534	700	112	536	1010	459	425	563	410	254	695	1100
MIN	72	67	69	77	128	96	104	76	59	41	57	60
CFSM	1.16	1.74	.70	1.26	3.21	1.61	1.87	1.60	1.53	.69	1.68	2.93
IN.	1.34	1.95	.80	1.45	3.34	1.85	2.09	1.85	1.71	.79	1.94	3.27

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 - 2001, BY WATER YEAR (WY)
MEAN	84.8	107	108	114	137	210	236	164	137	94.2	106	91.3
MAX	331	457	500	368	444	809	565	480	388	288	795	414
(WY)	1955	1986	1983	1993	1997	1979	1983	1996	1996	1978	1987	1972
MIN	3.34	5.55	8.14	5.79	12.4	46.1	41.8	24.8	25.6	10.6	3.08	3.33
(WY)	1949	1949	1954	1954	1954	1956	1946	1946	1956	1946	1948	1952

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1946 - 2001
ANNUAL TOTAL	61973		69186
ANNUAL MEAN	169		190		132
HIGHEST ANNUAL MEAN					250	1993
LOWEST ANNUAL MEAN					36.6	1953
HIGHEST DAILY MEAN	1250	Apr 21	1100	Sep 21	3220	Aug 17 1987
LOWEST DAILY MEAN	44	Sep 9, 10	41	Jul 15	1.0	Aug 27 1950
ANNUAL SEVEN-DAY MINIMUM	46	Sep 4	47	Jul 11	2.1	Oct 15 1948
MAXIMUM PEAK FLOW			1280	Sep 23	3540	Aug 17 1987
MAXIMUM PEAK STAGE			7.48	Sep 23	10.54	Aug 17 1987
INSTANTANEOUS LOW FLOW			33	Jul 1	.00 A	May 27 1998
ANNUAL RUNOFF (CFSM)	1.47		1.65		1.15
ANNUAL RUNOFF (INCHES)	20.05		22.38		15.63
10 PERCENT EXCEEDS	400		409		302
50 PERCENT EXCEEDS	102		123		75
90 PERCENT EXCEEDS	64		70		16

A- Due to bridge construction.