USGS CD-ROM: Current Year Discharge

05536000 NORTH BRANCH CHICAGO RIVER AT NILES, IL

LOCATION.--Lat 42°00'44", long 87°47'45", in SW¼SE¼ 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.--October 1950 to current year. Prior to October 1952, records published with those for streams in the St. Lawrence River basin (WSP 1207, 1237).

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

GAGE.--Water-stage recorder. Datum of gage is 601.99 ft above sea level.

REMARKS.--Records good. Diurnal fluctuation at low flow caused by sewage-treatment plants. Gage-height telemeter at station.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	27	37	81	49	111	86	527	114	38	215	26	25
2	27	33	75	52	266	77	459	99	38	154	24	23
3	28	31	80	112	248	80	321	85	35	160	24	21
4	26	30	84	342	189	79	235	94	32	508	178	21
5	22	30	71	406	153	73	178	85	34	258	348	19

6	20	84	61	426	123	67	148	111	36	176	205	18
7	21	72	53	463	108	63	153	671	32	351	127	72
8	21	55	46	474	100	280	506	937	29	197	132	65
9	30	42	47	565	92	728	718	642	64	131	52	40
10	30	43	131	392	89	607	596	370	72	92	39	29

11	26	32	238	225	220	398	421	215	168	72	33	25
12	27	27	168	176	455	300	286	167	149	56	28	22
13	47	22	115	127	320	240	238	153	135	50	26	19
14	54	28	87	105	221	204	223	185	89	49	26	44
15	36	73	73	92	167	171	141	142	60	47	26	106

16	33	94	75	83	146	148	278	109	48	42	21	59
17	35	72	72	72	240	240	306	83	41	39	19	45
18	24	55	67	62	457	856	245	68	73	36	21	34
19	23	50	61	57	295	884	203	62	199	38	20	30
20	23	47	56	55	208	657	169	64	120	40	18	49

21	25	60	51	55	159	425	296	61	72	36	20	43
22	23	66	77	61	133	304	237	53	50	36	68	37
23	20	64	87	66	115	232	165	51	42	35	43	31
24	40	55	75	64	115	188	126	121	34	30	78	27
25	40	49	180	57	102	161	91	97	35	19	174	27

26	123	45	150	54	87	140	128	63	440	31	48	24
27	377	54	105	60	102	115	194	51	532	31	34	22
28	142	87	79	63	97	112	151	46	570	33	52	19
29	81	81	70	84	---	101	145	45	535	29	47	22
30	51	88	65	95	---	89	122	45	319	27	32	36

31	41	---	54	87	---	252	---	43	---	27	27	---

TOTAL	1543	1606	2734	5081	5118	8357	8006	5132	4121	3045	2016	1054
MEAN	49.8	53.5	88.2	164	183	270	267	166	137	98.2	65.0	35.1
MAX	377	94	238	565	457	884	718	937	570	508	348	106
MIN	20	22	46	49	87	63	91	43	29	19	18	18
CFSM	.50	.54	.88	1.64	1.83	2.70	2.67	1.66	1.37	.98	.65	.35
IN.	.57	.60	1.02	1.89	1.90	3.11	2.98	1.91	1.53	1.13	.75	.39

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 1998, BY WATER YEAR (WY)
MEAN	60.2	80.7	84.2	76.4	103	173	185	124	102	80.5	75.6	66.4
MAX	293	349	381	239	358	582	454	445	339	290	401	315
(WY)	1987	1986	1983	1974	1997	1979	1993	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 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1951 - 1998
ANNUAL TOTAL	43048		47813
ANNUAL MEAN	118		131		101
HIGHEST ANNUAL MEAN					171	1993
LOWEST ANNUAL MEAN					28.0	1963
HIGHEST DAILY MEAN	1810	Feb 21	937	May 8	2030	Aug 15 1987
LOWEST DAILY MEAN	20	Oct 6	18	Aug 20, Sep 6	.10	Sep 30 1953
ANNUAL SEVEN-DAY MINIMUM	24	Oct 2	21	Aug 15	1.3	Oct 9 1952
INSTANTANEOUS PEAK FLOW			993	May 8	2590	Aug 14 1987
INSTANTANEOUS PEAK STAGE			7.12	May 8	11.35	Aug 14 1987
INSTANTANEOUS LOW FLOW			13	Oct 23
ANNUAL RUNOFF (CFSM)	1.18		1.31		1.01
ANNUAL RUNOFF (INCHES)	16.01		17.79		13.71
10 PERCENT EXCEEDS	231		319		240
50 PERCENT EXCEEDS	66		72		48
90 PERCENT EXCEEDS	27		26		12

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	27	37	81	49	111	86	527	114	38	215	26	25
2	27	33	75	52	266	77	459	99	38	154	24	23
3	28	31	80	112	248	80	321	85	35	160	24	21
4	26	30	84	342	189	79	235	94	32	508	178	21
5	22	30	71	406	153	73	178	85	34	258	348	19

6	20	84	61	426	123	67	148	111	36	176	205	18
7	21	72	53	463	108	63	153	671	32	351	127	72
8	21	55	46	474	100	280	506	937	29	197	132	65
9	30	42	47	565	92	728	718	642	64	131	52	40
10	30	43	131	392	89	607	596	370	72	92	39	29

11	26	32	238	225	220	398	421	215	168	72	33	25
12	27	27	168	176	455	300	286	167	149	56	28	22
13	47	22	115	127	320	240	238	153	135	50	26	19
14	54	28	87	105	221	204	223	185	89	49	26	44
15	36	73	73	92	167	171	141	142	60	47	26	106

16	33	94	75	83	146	148	278	109	48	42	21	59
17	35	72	72	72	240	240	306	83	41	39	19	45
18	24	55	67	62	457	856	245	68	73	36	21	34
19	23	50	61	57	295	884	203	62	199	38	20	30
20	23	47	56	55	208	657	169	64	120	40	18	49

21	25	60	51	55	159	425	296	61	72	36	20	43
22	23	66	77	61	133	304	237	53	50	36	68	37
23	20	64	87	66	115	232	165	51	42	35	43	31
24	40	55	75	64	115	188	126	121	34	30	78	27
25	40	49	180	57	102	161	91	97	35	19	174	27

26	123	45	150	54	87	140	128	63	440	31	48	24
27	377	54	105	60	102	115	194	51	532	31	34	22
28	142	87	79	63	97	112	151	46	570	33	52	19
29	81	81	70	84	---	101	145	45	535	29	47	22
30	51	88	65	95	---	89	122	45	319	27	32	36

31	41	---	54	87	---	252	---	43	---	27	27	---

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	27	37	81	49	111	86	527	114	38	215	26	25
2	27	33	75	52	266	77	459	99	38	154	24	23
3	28	31	80	112	248	80	321	85	35	160	24	21
4	26	30	84	342	189	79	235	94	32	508	178	21
5	22	30	71	406	153	73	178	85	34	258	348	19

6	20	84	61	426	123	67	148	111	36	176	205	18
7	21	72	53	463	108	63	153	671	32	351	127	72
8	21	55	46	474	100	280	506	937	29	197	132	65
9	30	42	47	565	92	728	718	642	64	131	52	40
10	30	43	131	392	89	607	596	370	72	92	39	29

11	26	32	238	225	220	398	421	215	168	72	33	25
12	27	27	168	176	455	300	286	167	149	56	28	22
13	47	22	115	127	320	240	238	153	135	50	26	19
14	54	28	87	105	221	204	223	185	89	49	26	44
15	36	73	73	92	167	171	141	142	60	47	26	106

16	33	94	75	83	146	148	278	109	48	42	21	59
17	35	72	72	72	240	240	306	83	41	39	19	45
18	24	55	67	62	457	856	245	68	73	36	21	34
19	23	50	61	57	295	884	203	62	199	38	20	30
20	23	47	56	55	208	657	169	64	120	40	18	49

21	25	60	51	55	159	425	296	61	72	36	20	43
22	23	66	77	61	133	304	237	53	50	36	68	37
23	20	64	87	66	115	232	165	51	42	35	43	31
24	40	55	75	64	115	188	126	121	34	30	78	27
25	40	49	180	57	102	161	91	97	35	19	174	27

26	123	45	150	54	87	140	128	63	440	31	48	24
27	377	54	105	60	102	115	194	51	532	31	34	22
28	142	87	79	63	97	112	151	46	570	33	52	19
29	81	81	70	84	---	101	145	45	535	29	47	22
30	51	88	65	95	---	89	122	45	319	27	32	36

31	41	---	54	87	---	252	---	43	---	27	27	---

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	27	37	81	49	111	86	527	114	38	215	26	25
2	27	33	75	52	266	77	459	99	38	154	24	23
3	28	31	80	112	248	80	321	85	35	160	24	21
4	26	30	84	342	189	79	235	94	32	508	178	21
5	22	30	71	406	153	73	178	85	34	258	348	19

6	20	84	61	426	123	67	148	111	36	176	205	18
7	21	72	53	463	108	63	153	671	32	351	127	72
8	21	55	46	474	100	280	506	937	29	197	132	65
9	30	42	47	565	92	728	718	642	64	131	52	40
10	30	43	131	392	89	607	596	370	72	92	39	29

11	26	32	238	225	220	398	421	215	168	72	33	25
12	27	27	168	176	455	300	286	167	149	56	28	22
13	47	22	115	127	320	240	238	153	135	50	26	19
14	54	28	87	105	221	204	223	185	89	49	26	44
15	36	73	73	92	167	171	141	142	60	47	26	106

16	33	94	75	83	146	148	278	109	48	42	21	59
17	35	72	72	72	240	240	306	83	41	39	19	45
18	24	55	67	62	457	856	245	68	73	36	21	34
19	23	50	61	57	295	884	203	62	199	38	20	30
20	23	47	56	55	208	657	169	64	120	40	18	49

21	25	60	51	55	159	425	296	61	72	36	20	43
22	23	66	77	61	133	304	237	53	50	36	68	37
23	20	64	87	66	115	232	165	51	42	35	43	31
24	40	55	75	64	115	188	126	121	34	30	78	27
25	40	49	180	57	102	161	91	97	35	19	174	27

26	123	45	150	54	87	140	128	63	440	31	48	24
27	377	54	105	60	102	115	194	51	532	31	34	22
28	142	87	79	63	97	112	151	46	570	33	52	19
29	81	81	70	84	---	101	145	45	535	29	47	22
30	51	88	65	95	---	89	122	45	319	27	32	36

31	41	---	54	87	---	252	---	43	---	27	27	---