05536105 DATA: Discharge Tables, 2004

Station list Available data
ILLINOIS RIVER BASIN


LOCATION.-- Lat 41°58'27", long 87°42'22" (NAD of 1927), in NW1/4SW1/4 sec.12, T.40 N., R.13 E., Cook County, Hydrologic Unit 07120003, on right downstream side of bridge in West River Park in Chicago, 0.1 mi upstream from North Shore Channel, and at mile 43.4.

DRAINAGE AREA.-- 113 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1989 to September 1998; June 2000 to current year.
	STAGE: October 1994 to September 1998, June 2000 to current year.

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 580.67 ft above NGVD of 1929.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,360 ft³/s, Feb. 21, 1997, gage height 6.81 ft; minimum discharge, 3.6 ft³/s, Aug. 5,6, 1993.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	28	23	63	43	e50	162	245	79	737	69	37	48
2	27	69	56	40	e55	266	198	79	585	63	34	39
3	36	438	46	43	e58	203	163	68	342	152	38	40
4	61	504	40	45	e60	173	132	66	241	292	455	37
5	39	615	94	46	e58	744	113	55	212	199	220	33

6	30	448	84	37	e60	799	102	62	177	117	80	30
7	28	213	56	68	e62	557	89	57	154	98	62	30
8	27	147	49	72	e54	399	78	47	171	83	56	30
9	25	101	50	52	e48	285	73	44	178	92	50	27
10	25	85	314	46	e41	212	69	50	409	429	46	26

11	26	78	509	e42	e34	168	61	71	653	318	42	27
12	23	75	317	39	e29	141	57	60	615	152	41	29
13	25	62	193	e37	e28	122	57	156	430	114	43	26
14	169	51	147	39	e27	121	58	261	319	97	40	26
15	193	50	111	38	e29	111	52	347	253	77	37	27

16	70	50	89	e37	e33	102	56	198	191	72	35	35
17	49	48	73	36	e31	99	78	130	155	66	47	33
18	43	337	64	e36	65	104	87	327	128	58	50	29
19	38	472	56	e36	88	97	74	445	116	54	79	26
20	34	237	49	e37	136	95	74	333	101	52	46	25

21	34	155	50	e36	237	75	138	575	168	49	37	27
22	33	103	44	e34	135	64	112	894	270	99	38	26
23	32	116	43	e34	140	62	87	988	202	76	36	24
24	31	231	42	e35	196	100	85	729	144	76	157	24
25	53	189	39	e38	214	144	158	559	123	60	200	22

26	43	153	36	e41	191	225	128	380	100	56	70	19
27	31	128	35	e45	169	325	103	240	85	48	80	20
28	28	114	43	e46	147	272	90	187	81	41	561	21
29	26	95	48	e47	137	530	83	153	75	42	227	21
30	25	77	46	e48	---	533	79	368	70	42	87	20

31	23	---	46	e49	---	361	---	741	---	40	60	---

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1990 - 2004, BY WATER YEAR (WY)
MEAN	108	125	86.6	102	147	184	189	217	156	102	123	85.1
MAX	488	266	175	280	394	288	514	446	332	189	342	247
(WY)	2002	1991	1992	1993	1997	1993	1993	1996	1996	1993	1990	2001
MIN	38.7	38.3	31.3	28.7	31.7	62.7	84.1	45.0	46.0	33.0	44.6	24.1
(WY)	1995	2003	1990	2003	2003	2003	1994	1992	1992	2002	2003	1994

SUMMARY STATISTICS	FOR 2003 CALENDAR YEAR		FOR 2004 WATER YEAR		WATER YEARS 1990 - 2004
ANNUAL TOTAL	38081		47770
ANNUAL MEAN	104		131		135
HIGHEST ANNUAL MEAN					201	1993
LOWEST ANNUAL MEAN					90.0	2003
HIGHEST DAILY MEAN	994	May 1	988	May 23	1990	Feb 22 1997
LOWEST DAILY MEAN	17	Sep 12	19	Sep 26	11	Oct 11 1992
ANNUAL SEVEN-DAY MINIMUM	19	Sep 6	21	Sep 24	14	Sep 16 1994
MAXIMUM PEAK FLOW			1030	May 23	2360	Feb 21 1997
MAXIMUM PEAK STAGE			5.12	May 23	6.81	Feb 21 1997
INSTANTANEOUS LOW FLOW			17	Sep 26	3.6	A
ANNUAL RUNOFF (CFSM)	0.923		1.16		1.19
ANNUAL RUNOFF (INCHES)	12.54		15.73		16.20
10 PERCENT EXCEEDS	278		326		319
50 PERCENT EXCEEDS	48		68		69
90 PERCENT EXCEEDS	24		29		28

A - Aug. 5, 6, 1993.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	28	23	63	43	e50	162	245	79	737	69	37	48
2	27	69	56	40	e55	266	198	79	585	63	34	39
3	36	438	46	43	e58	203	163	68	342	152	38	40
4	61	504	40	45	e60	173	132	66	241	292	455	37
5	39	615	94	46	e58	744	113	55	212	199	220	33

6	30	448	84	37	e60	799	102	62	177	117	80	30
7	28	213	56	68	e62	557	89	57	154	98	62	30
8	27	147	49	72	e54	399	78	47	171	83	56	30
9	25	101	50	52	e48	285	73	44	178	92	50	27
10	25	85	314	46	e41	212	69	50	409	429	46	26

11	26	78	509	e42	e34	168	61	71	653	318	42	27
12	23	75	317	39	e29	141	57	60	615	152	41	29
13	25	62	193	e37	e28	122	57	156	430	114	43	26
14	169	51	147	39	e27	121	58	261	319	97	40	26
15	193	50	111	38	e29	111	52	347	253	77	37	27

16	70	50	89	e37	e33	102	56	198	191	72	35	35
17	49	48	73	36	e31	99	78	130	155	66	47	33
18	43	337	64	e36	65	104	87	327	128	58	50	29
19	38	472	56	e36	88	97	74	445	116	54	79	26
20	34	237	49	e37	136	95	74	333	101	52	46	25

21	34	155	50	e36	237	75	138	575	168	49	37	27
22	33	103	44	e34	135	64	112	894	270	99	38	26
23	32	116	43	e34	140	62	87	988	202	76	36	24
24	31	231	42	e35	196	100	85	729	144	76	157	24
25	53	189	39	e38	214	144	158	559	123	60	200	22

26	43	153	36	e41	191	225	128	380	100	56	70	19
27	31	128	35	e45	169	325	103	240	85	48	80	20
28	28	114	43	e46	147	272	90	187	81	41	561	21
29	26	95	48	e47	137	530	83	153	75	42	227	21
30	25	77	46	e48	---	533	79	368	70	42	87	20

31	23	---	46	e49	---	361	---	741	---	40	60	---

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	28	23	63	43	e50	162	245	79	737	69	37	48
2	27	69	56	40	e55	266	198	79	585	63	34	39
3	36	438	46	43	e58	203	163	68	342	152	38	40
4	61	504	40	45	e60	173	132	66	241	292	455	37
5	39	615	94	46	e58	744	113	55	212	199	220	33

6	30	448	84	37	e60	799	102	62	177	117	80	30
7	28	213	56	68	e62	557	89	57	154	98	62	30
8	27	147	49	72	e54	399	78	47	171	83	56	30
9	25	101	50	52	e48	285	73	44	178	92	50	27
10	25	85	314	46	e41	212	69	50	409	429	46	26

11	26	78	509	e42	e34	168	61	71	653	318	42	27
12	23	75	317	39	e29	141	57	60	615	152	41	29
13	25	62	193	e37	e28	122	57	156	430	114	43	26
14	169	51	147	39	e27	121	58	261	319	97	40	26
15	193	50	111	38	e29	111	52	347	253	77	37	27

16	70	50	89	e37	e33	102	56	198	191	72	35	35
17	49	48	73	36	e31	99	78	130	155	66	47	33
18	43	337	64	e36	65	104	87	327	128	58	50	29
19	38	472	56	e36	88	97	74	445	116	54	79	26
20	34	237	49	e37	136	95	74	333	101	52	46	25

21	34	155	50	e36	237	75	138	575	168	49	37	27
22	33	103	44	e34	135	64	112	894	270	99	38	26
23	32	116	43	e34	140	62	87	988	202	76	36	24
24	31	231	42	e35	196	100	85	729	144	76	157	24
25	53	189	39	e38	214	144	158	559	123	60	200	22

26	43	153	36	e41	191	225	128	380	100	56	70	19
27	31	128	35	e45	169	325	103	240	85	48	80	20
28	28	114	43	e46	147	272	90	187	81	41	561	21
29	26	95	48	e47	137	530	83	153	75	42	227	21
30	25	77	46	e48	---	533	79	368	70	42	87	20

31	23	---	46	e49	---	361	---	741	---	40	60	---

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	28	23	63	43	e50	162	245	79	737	69	37	48
2	27	69	56	40	e55	266	198	79	585	63	34	39
3	36	438	46	43	e58	203	163	68	342	152	38	40
4	61	504	40	45	e60	173	132	66	241	292	455	37
5	39	615	94	46	e58	744	113	55	212	199	220	33

6	30	448	84	37	e60	799	102	62	177	117	80	30
7	28	213	56	68	e62	557	89	57	154	98	62	30
8	27	147	49	72	e54	399	78	47	171	83	56	30
9	25	101	50	52	e48	285	73	44	178	92	50	27
10	25	85	314	46	e41	212	69	50	409	429	46	26

11	26	78	509	e42	e34	168	61	71	653	318	42	27
12	23	75	317	39	e29	141	57	60	615	152	41	29
13	25	62	193	e37	e28	122	57	156	430	114	43	26
14	169	51	147	39	e27	121	58	261	319	97	40	26
15	193	50	111	38	e29	111	52	347	253	77	37	27

16	70	50	89	e37	e33	102	56	198	191	72	35	35
17	49	48	73	36	e31	99	78	130	155	66	47	33
18	43	337	64	e36	65	104	87	327	128	58	50	29
19	38	472	56	e36	88	97	74	445	116	54	79	26
20	34	237	49	e37	136	95	74	333	101	52	46	25

21	34	155	50	e36	237	75	138	575	168	49	37	27
22	33	103	44	e34	135	64	112	894	270	99	38	26
23	32	116	43	e34	140	62	87	988	202	76	36	24
24	31	231	42	e35	196	100	85	729	144	76	157	24
25	53	189	39	e38	214	144	158	559	123	60	200	22

26	43	153	36	e41	191	225	128	380	100	56	70	19
27	31	128	35	e45	169	325	103	240	85	48	80	20
28	28	114	43	e46	147	272	90	187	81	41	561	21
29	26	95	48	e47	137	530	83	153	75	42	227	21
30	25	77	46	e48	---	533	79	368	70	42	87	20

31	23	---	46	e49	---	361	---	741	---	40	60	---