USGS CD-ROM: Current Year Discharge

05536105 NORTH BRANCH CHICAGO RIVER AT ALBANY AVENUE AT CHICAGO, IL

LOCATION.--Lat 41°58'27", long 87°42'22", in NW¼SW¼ 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.--October 1989 to September 30, 1998 (discontinued).

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 580.67 ft above sea level.

REMARKS.--Records good except those for estimated daily discharges, which are poor. 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	24	38	86	e58	106	92	408	117	e38	224	17	29
2	25	33	80	e56	247	84	393	102	e35	160	16	27
3	28	31	76	97	252	83	280	88	e34	113	15	24
4	39	31	86	331	194	86	203	89	e33	424	177	23
5	23	27	80	438	154	80	156	82	e32	287	438	23

6	20	78	70	458	128	76	137	106	e34	165	333	20
7	20	80	62	475	109	70	111	599	e30	306	226	82
8	22	60	54	545	103	209	349	929	57	214	238	96
9	31	47	52	601	91	613	601	676	137	128	90	58
10	31	42	131	466	88	566	553	381	145	87	53	37

11	27	39	242	253	164	354	375	229	e250	64	44	29
12	27	31	188	193	431	258	253	164	e220	46	34	24
13	58	23	131	142	346	210	197	140	e190	37	31	22
14	67	25	103	e120	231	180	233	172	e120	36	27	32
15	41	68	87	e100	178	154	145	143	e70	35	34	157

16	31	102	84	90	146	133	224	103	e50	31	25	72
17	33	72	81	79	207	159	256	76	e40	29	22	53
18	28	66	77	70	449	686	229	59	85	27	23	36
19	17	56	74	64	329	853	196	53	304	29	23	28
20	18	52	68	59	221	640	153	52	233	31	21	48

21	21	59	62	58	169	389	249	53	157	30	23	43
22	20	72	86	61	140	260	223	47	102	28	90	41
23	14	71	97	66	122	196	174	45	e62	27	92	32
24	46	64	85	68	117	160	136	97	e50	24	121	21
25	47	54	179	62	111	136	99	119	e35	13	319	21

26	140	49	158	56	94	116	109	71	414	18	85	20
27	411	59	111	60	101	98	175	54	529	22	48	15
28	163	90	86	64	107	92	159	47	524	24	75	14
29	83	90	74	83	---	84	144	e44	524	20	71	16
30	58	87	73	97	---	72	127	e42	343	18	46	34

31	38	---	63	92	---	149	---	e40	---	17	33	---

TOTAL	1651	1696	2986	5462	5135	7338	7047	5019	4877	2714	2890	1177
MEAN	53.3	56.5	96.3	176	183	237	235	162	163	87.5	93.2	39.2
MAX	411	102	242	601	449	853	601	929	529	424	438	157
MIN	14	23	52	56	88	70	99	40	30	13	15	14
CFSM	.47	.50	.85	1.56	1.62	2.09	2.08	1.43	1.44	.77	.83	.35
IN.	.54	.56	.98	1.80	1.69	2.42	2.32	1.65	1.61	.89	.95	.39

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1990 - 1998, BY WATER YEAR (WY)
MEAN	80.3	139	98.0	126	153	195	215	191	153	99.8	120	70.8
MAX	205	266	175	280	394	288	514	446	332	189	342	144
(WY)	1992	1991	1992	1993	1997	1993	1993	1996	1996	1993	1990	1993
MIN	38.7	46.9	31.3	45.4	50.3	69.9	84.1	45.0	46.0	46.6	48.3	24.1
(WY)	1995	1997	1990	1994	1995	1996	1994	1992	1992	1991	1996	1994

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1990 - 1998
ANNUAL TOTAL	44979		47992
ANNUAL MEAN	123		131		137
HIGHEST ANNUAL MEAN					201	1993
LOWEST ANNUAL MEAN					95.2	1994
HIGHEST DAILY MEAN	1990	Feb 22	929	May 8	1990	Feb 22 1997
LOWEST DAILY MEAN	14	Oct 23	13	Jul 25	11	Oct 11 1992
ANNUAL SEVEN-DAY MINIMUM	22	Oct 17	18	Jul 28	14	Sep 16 1994
INSTANTANEOUS PEAK FLOW			954	May 8	2360	Feb 21 1997
INSTANTANEOUS PEAK STAGE			4.98	May 8	6.81	Feb 21 1997
INSTANTANEOUS LOW FLOW			6.8	A	3.6	B
ANNUAL RUNOFF (CFSM)	1.09		1.16		1.21
ANNUAL RUNOFF (INCHES)	14.81		15.80		16.42
10 PERCENT EXCEEDS	235		330		312
50 PERCENT EXCEEDS	72		82		71
90 PERCENT EXCEEDS	26		24		28

A - Oct. 23, July 25, 26.
B - Aug. 5, 6, 1993.