05534500 DATA: Discharge Tables, 2002

Station list Available data
ILLINOIS RIVER BASIN


LOCATION.-- Lat 42°09'10", long 87°49'07" (NAD of 1927), in SW1/4SE1/4 sec.34, T.43 N., R.12 E., Lake County, Hydrologic Unit 07120003, on right bank at upstream side of bridge on Lake-Cook Road, 1.7 mi southeast of Deerfield, 5.7 mi upstream from Skokie River, and at mile 64.7.

DRAINAGE AREA.-- 19.7 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: August 1952 to current year.
	STAGE: Water years 1994-2002.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1978-91.

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

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 638.88 ft above NGVD of 1929 (Cook County Highway Department bench mark).

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 933 ft³/s, Aug. 14, 1987, gage height, 11.52 ft; maximum gage height, 11.55 ft, Oct. 13, 2001; no flow at times in most years.

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

DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	7.7	17	33	0.81	17	17	19	19	2.1	0.87	0.93	2.6
2	6.4	14	33	e0.72	14	21	22	77	1.7	0.76	0.98	40
3	5.8	12	26	0.67	13	27	23	51	17	0.75	0.62	30
4	6.6	8.2	14	e0.62	7.7	25	15	22	293	0.69	2.0	15
5	19	6.1	11	e0.60	6.8	24	19	13	248	0.65	1.6	10

6	9.8	5.1	11	e0.59	5.0	24	11	15	130	1.1	0.72	7.1
7	6.9	4.1	7.3	e0.58	5.5	32	19	8.3	53	0.71	0.55	5.9
8	5.0	4.8	5.0	0.57	8.3	114	69	7.0	22	0.66	0.51	4.9
9	4.3	3.5	3.3	e0.58	18	146	176	13	13	8.0	0.50	4.3
10	3.4	3.7	4.4	e0.58	53	88	108	10	11	3.7	0.48	4.2

11	7.3	1.8	2.3	e0.58	48	59	73	35	26	2.1	0.46	3.6
12	42	1.7	2.9	e0.58	40	46	48	263	20	1.7	0.58	2.8
13	305	1.6	29	0.55	36	31	37	105	20	1.4	29	1.9
14	641	1.4	33	0.63	27	26	23	41	23	1.2	25	1.7
15	270	1.4	24	0.73	25	20	21	34	20	1.1	9.7	1.6

16	123	1.9	17	0.72	25	12	17	85	18	0.92	6.2	1.1
17	73	1.1	24	0.95	22	10	12	68	10	0.76	4.8	1.0
18	42	1.1	13	0.91	18	9.3	7.4	22	4.6	0.66	3.7	4.0
19	56	1.6	14	0.83	38	11	6.1	15	3.2	0.59	5.8	19
20	54	1.5	32	0.67	77	8.2	6.0	11	2.6	0.58	4.3	17

21	18	1.2	15	0.74	74	9.5	11	8.8	2.1	0.56	6.0	9.9
22	14	1.0	13	0.71	59	6.0	11	7.2	1.9	0.54	310	19
23	426	0.89	16	1.5	48	6.2	6.7	6.2	1.6	0.54	148	8.0
24	308	3.0	11	2.0	42	4.9	6.4	5.8	1.5	0.56	71	5.5
25	204	9.9	7.8	1.5	35	11	7.8	6.6	1.3	0.55	35	4.1

26	110	5.6	6.0	1.4	28	5.9	4.6	5.6	2.6	0.68	28	3.1
27	74	4.5	4.2	1.6	24	3.8	11	4.5	1.7	1.8	21	2.3
28	77	3.9	2.9	2.2	20	3.7	30	3.8	1.3	1.0	7.3	1.9
29	72	6.4	1.7	2.4	---	19	18	3.4	1.0	1.1	5.3	18
30	82	37	1.1	1.8	---	28	11	2.9	0.92	1.0	4.1	11

31	50	---	0.92	3.5	---	23	---	2.4	---	0.98	3.2	---

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1953 - 2002, BY WATER YEAR (WY)
MEAN	8.787	13.08	14.47	12.58	19.93	34.29	37.39	20.69	16.43	9.852	8.889	9.260
MAX	101	76.3	95.9	62.8	64.2	153	109	108	64.3	59.7	59.9	70.5
(WY)	2002	1986	1983	1974	1997	1979	1999	1996	1996	1982	1990	1972
MIN	0.094	0.16	0.048	0.000	0.082	3.89	6.40	2.16	0.79	0.44	0.22	0.023
(WY)	1961	1963	1963	1963	1963	1968	1986	1992	1963	1965	1966	1966

SUMMARY STATISTICS	FOR 2001 CALENDAR YEAR		FOR 2002 WATER YEAR		WATER YEARS 1953 - 2002
ANNUAL TOTAL	11398.97		9258.29
ANNUAL MEAN	31.23		25.37		17.10
HIGHEST ANNUAL MEAN					32.2	1974
LOWEST ANNUAL MEAN					2.32	1963
HIGHEST DAILY MEAN	641	Oct 14	641	Oct 14	641	Oct 14 2001
LOWEST DAILY MEAN	0.28	Jul 5,6	0.46	Aug 11	0.00	A
ANNUAL SEVEN-DAY MINIMUM	0.41	Jun 30	0.54	Aug 6	0.00	Oct 5 1953
MAXIMUM PEAK FLOW			787	Oct 13	933	Aug 14 1987
MAXIMUM PEAK STAGE			11.55	Oct 13	11.52	Aug 14 1987
INSTANTANEOUS LOW FLOW			0.38	Aug 9,11
ANNUAL RUNOFF (CFSM)	1.59		1.29		0.87
ANNUAL RUNOFF (INCHES)	21.52		17.48		11.79
10 PERCENT EXCEEDS	60		55		42
50 PERCENT EXCEEDS	14		7.2		4.9
90 PERCENT EXCEEDS	1.7		0.72		0.39

A - At times in most years.