05536000 DATA: Discharge Tables, 2004

Station list Available data
ILLINOIS RIVER BASIN

05536000 NORTH BRANCH CHICAGO RIVER AT NILES, IL


LOCATION.-- Lat 42°00'44", long 87°47'44" (NAD of 1927), in SW1/4SE1/4 sec.30, T.41 N., R.13 E., Cook County, Hydrologic Unit 07120003, on right bank at downstream side of bridge on Touhy Avenue in Niles, 3.6 mi downstream from West Fork of North Branch, 7.9 mi upstream from North Shore Channel, and at mile 51.4.

DRAINAGE AREA.-- 100 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1950 to current year. Prior to October 1952, records published with those for streams in the St. Lawrence River basin (WSP 1207, 1237).
	STAGE: Water years 1994 to current year.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1978 to 1991. Additional chemical data for water years 1972-77 are published in Water-Resources Investigations 78-22 and 79-23 as site HCC 07.
	SEDIMENT: October 1984 to September 1986.
BIOLOGICAL
	ALGAE: Pigment and biomass, Water years 1989 and 1990.

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

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 601.99 ft above NGVD of 1929.

REMARKS.-- Diurnal fluctuation at low flow caused by sewage-treatment plants.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,590 ft³/s, Aug. 14, 1987, gage height, 11.35 ft; minimum daily discharge, .10 ft³/s, Sept. 30, 1953.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 285 mg/L July 15, 1985; minimum daily mean, 2 mg/L Jan. 23 to Feb. 21, 1985, and Jan. 30-31, 1986.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 566 tons July 8, 1986; minimum daily, 0.14 ton Jan. 29, Jan. 31 to Feb. 4, Feb. 6-11, 15-19, 1985.

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	26	26	55	45	46	201	199	47	672	36	22	46
2	25	102	50	43	47	275	160	45	489	30	21	40
3	44	500	38	49	56	199	128	40	253	116	57	40
4	63	400	33	45	56	203	104	34	187	234	390	36
5	36	471	88	51	53	751	87	30	164	125	141	31

6	28	293	67	52	57	703	77	41	132	77	60	26
7	27	154	51	67	58	462	64	34	116	60	51	27
8	25	111	44	41	49	355	52	30	136	50	43	25
9	24	82	51	38	41	288	46	30	142	60	38	24
10	23	72	338	35	37	216	40	46	374	475	35	24

11	23	67	443	34	31	174	31	55	569	211	31	24
12	21	59	250	38	31	150	28	65	509	125	28	25
13	22	49	167	41	29	132	28	151	336	100	30	22
14	180	43	137	40	29	138	25	264	243	83	26	25
15	164	42	112	37	26	122	21	300	194	66	23	26

16	66	40	97	35	31	120	23	163	143	60	23	34
17	49	39	84	e34	26	118	52	114	113	53	33	28
18	39	279	74	e33	24	124	50	361	92	46	43	23
19	33	340	64	e35	35	115	38	375	82	44	50	21
20	31	158	52	e34	86	116	50	327	70	41	25	20

21	31	111	49	33	161	89	104	662	151	52	19	23
22	28	78	49	33	137	78	71	967	214	85	22	21
23	25	95	49	31	158	77	51	986	144	67	20	20
24	24	172	48	34	207	151	55	659	103	64	170	20
25	54	143	43	34	219	174	122	488	86	47	117	18

26	39	118	38	36	198	299	85	317	64	45	49	16
27	29	104	37	40	176	340	65	207	56	32	65	18
28	31	91	47	41	153	293	52	160	50	28	365	19
29	29	79	52	42	146	507	46	130	44	26	152	20
30	27	67	49	43	---	409	44	363	40	28	84	20

31	26	---	49	45	---	287	---	767	---	27	59	---

TOTAL	1292	4385	2805	1239	2403	7666	1998	8258	5968	2593	2292	762
MEAN	41.7	146	90.5	40.0	82.9	247	66.6	266	199	83.6	73.9	25.4
MAX	180	500	443	67	219	751	199	986	672	475	390	46
MIN	21	26	33	31	24	77	21	30	40	26	19	16
CFSM	0.42	1.46	0.90	0.40	0.83	2.47	0.67	2.66	1.99	0.84	0.74	0.25
IN.	0.48	1.63	1.04	0.46	0.89	2.85	0.74	3.07	2.22	0.96	0.85	0.28

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 2004, BY WATER YEAR (WY)
MEAN	68.5	80.2	81.7	76.3	107	169	188	136	108	80.6	79.6	69.6
MAX	472	349	381	239	358	582	496	445	339	290	401	315
(WY)	2002	1986	1983	1974	1997	1979	1999	1996	1996	1982	1987	1972
MIN	2.83	5.53	6.56	5.51	4.87	28.6	50.0	24.9	19.0	9.46	6.15	4.54
(WY)	1953	1954	1951	1963	1963	1968	1986	1952	1963	1956	1955	1953

SUMMARY STATISTICS	FOR 2003 CALENDAR YEAR		FOR 2004 WATER YEAR		WATER YEARS 1951 - 2004
ANNUAL TOTAL	35757		41661
ANNUAL MEAN	98.0		114		103
HIGHEST ANNUAL MEAN					171	1993
LOWEST ANNUAL MEAN					28.0	1963
HIGHEST DAILY MEAN	1040	May 1	986	May 23	2030	Aug 15 1987
LOWEST DAILY MEAN	18	Aug 24	16	Sep 26	0.10	Sep 30 1953
ANNUAL SEVEN-DAY MINIMUM	20	Aug 19	19	Sep 23	1.3	Oct 9 1952
MAXIMUM PEAK FLOW			1130	May 23	2590	Aug 14 1987
MAXIMUM PEAK STAGE			7.79	May 23	11.35	Aug 14 1987
INSTANTANEOUS LOW FLOW			13	Sep 26
ANNUAL RUNOFF (CFSM)	0.980		1.14		1.03
ANNUAL RUNOFF (INCHES)	13.30		15.50		14.06
10 PERCENT EXCEEDS	237		293		249
50 PERCENT EXCEEDS	45		52		48
90 PERCENT EXCEEDS	23		25		13

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	26	26	55	45	46	201	199	47	672	36	22	46
2	25	102	50	43	47	275	160	45	489	30	21	40
3	44	500	38	49	56	199	128	40	253	116	57	40
4	63	400	33	45	56	203	104	34	187	234	390	36
5	36	471	88	51	53	751	87	30	164	125	141	31

6	28	293	67	52	57	703	77	41	132	77	60	26
7	27	154	51	67	58	462	64	34	116	60	51	27
8	25	111	44	41	49	355	52	30	136	50	43	25
9	24	82	51	38	41	288	46	30	142	60	38	24
10	23	72	338	35	37	216	40	46	374	475	35	24

11	23	67	443	34	31	174	31	55	569	211	31	24
12	21	59	250	38	31	150	28	65	509	125	28	25
13	22	49	167	41	29	132	28	151	336	100	30	22
14	180	43	137	40	29	138	25	264	243	83	26	25
15	164	42	112	37	26	122	21	300	194	66	23	26

16	66	40	97	35	31	120	23	163	143	60	23	34
17	49	39	84	e34	26	118	52	114	113	53	33	28
18	39	279	74	e33	24	124	50	361	92	46	43	23
19	33	340	64	e35	35	115	38	375	82	44	50	21
20	31	158	52	e34	86	116	50	327	70	41	25	20

21	31	111	49	33	161	89	104	662	151	52	19	23
22	28	78	49	33	137	78	71	967	214	85	22	21
23	25	95	49	31	158	77	51	986	144	67	20	20
24	24	172	48	34	207	151	55	659	103	64	170	20
25	54	143	43	34	219	174	122	488	86	47	117	18

26	39	118	38	36	198	299	85	317	64	45	49	16
27	29	104	37	40	176	340	65	207	56	32	65	18
28	31	91	47	41	153	293	52	160	50	28	365	19
29	29	79	52	42	146	507	46	130	44	26	152	20
30	27	67	49	43	---	409	44	363	40	28	84	20

31	26	---	49	45	---	287	---	767	---	27	59	---

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	26	26	55	45	46	201	199	47	672	36	22	46
2	25	102	50	43	47	275	160	45	489	30	21	40
3	44	500	38	49	56	199	128	40	253	116	57	40
4	63	400	33	45	56	203	104	34	187	234	390	36
5	36	471	88	51	53	751	87	30	164	125	141	31

6	28	293	67	52	57	703	77	41	132	77	60	26
7	27	154	51	67	58	462	64	34	116	60	51	27
8	25	111	44	41	49	355	52	30	136	50	43	25
9	24	82	51	38	41	288	46	30	142	60	38	24
10	23	72	338	35	37	216	40	46	374	475	35	24

11	23	67	443	34	31	174	31	55	569	211	31	24
12	21	59	250	38	31	150	28	65	509	125	28	25
13	22	49	167	41	29	132	28	151	336	100	30	22
14	180	43	137	40	29	138	25	264	243	83	26	25
15	164	42	112	37	26	122	21	300	194	66	23	26

16	66	40	97	35	31	120	23	163	143	60	23	34
17	49	39	84	e34	26	118	52	114	113	53	33	28
18	39	279	74	e33	24	124	50	361	92	46	43	23
19	33	340	64	e35	35	115	38	375	82	44	50	21
20	31	158	52	e34	86	116	50	327	70	41	25	20

21	31	111	49	33	161	89	104	662	151	52	19	23
22	28	78	49	33	137	78	71	967	214	85	22	21
23	25	95	49	31	158	77	51	986	144	67	20	20
24	24	172	48	34	207	151	55	659	103	64	170	20
25	54	143	43	34	219	174	122	488	86	47	117	18

26	39	118	38	36	198	299	85	317	64	45	49	16
27	29	104	37	40	176	340	65	207	56	32	65	18
28	31	91	47	41	153	293	52	160	50	28	365	19
29	29	79	52	42	146	507	46	130	44	26	152	20
30	27	67	49	43	---	409	44	363	40	28	84	20

31	26	---	49	45	---	287	---	767	---	27	59	---

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	26	26	55	45	46	201	199	47	672	36	22	46
2	25	102	50	43	47	275	160	45	489	30	21	40
3	44	500	38	49	56	199	128	40	253	116	57	40
4	63	400	33	45	56	203	104	34	187	234	390	36
5	36	471	88	51	53	751	87	30	164	125	141	31

6	28	293	67	52	57	703	77	41	132	77	60	26
7	27	154	51	67	58	462	64	34	116	60	51	27
8	25	111	44	41	49	355	52	30	136	50	43	25
9	24	82	51	38	41	288	46	30	142	60	38	24
10	23	72	338	35	37	216	40	46	374	475	35	24

11	23	67	443	34	31	174	31	55	569	211	31	24
12	21	59	250	38	31	150	28	65	509	125	28	25
13	22	49	167	41	29	132	28	151	336	100	30	22
14	180	43	137	40	29	138	25	264	243	83	26	25
15	164	42	112	37	26	122	21	300	194	66	23	26

16	66	40	97	35	31	120	23	163	143	60	23	34
17	49	39	84	e34	26	118	52	114	113	53	33	28
18	39	279	74	e33	24	124	50	361	92	46	43	23
19	33	340	64	e35	35	115	38	375	82	44	50	21
20	31	158	52	e34	86	116	50	327	70	41	25	20

21	31	111	49	33	161	89	104	662	151	52	19	23
22	28	78	49	33	137	78	71	967	214	85	22	21
23	25	95	49	31	158	77	51	986	144	67	20	20
24	24	172	48	34	207	151	55	659	103	64	170	20
25	54	143	43	34	219	174	122	488	86	47	117	18

26	39	118	38	36	198	299	85	317	64	45	49	16
27	29	104	37	40	176	340	65	207	56	32	65	18
28	31	91	47	41	153	293	52	160	50	28	365	19
29	29	79	52	42	146	507	46	130	44	26	152	20
30	27	67	49	43	---	409	44	363	40	28	84	20

31	26	---	49	45	---	287	---	767	---	27	59	---