05530990 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05530990 SALT CREEK AT ROLLING MEADOWS, IL

LOCATION.-- Lat 42°03'37", long 88°01'00", in SW1/4NW1/4 sec.8, T.41 N., R.11 E., Cook County, Hydrologic Unit 07120004, on left bank at upstream side of bridge on Algonquin Road in Rolling Meadows, 0.25 mi downstream from Arlington Heights Branch Salt Creek, and at mile 35.6.

DRAINAGE AREA.-- 30.5 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1973 to current year. August 1950 to September 1971, and October 1972 to September 1973 at site 0.9 mi downstream, published as Salt Creek near Arlington Heights. Records may not be equivalent.

STAGE: Water years 1994-2001.

PARTIAL RECORD: Annual maximum, water year 1972.

REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-93-2: 1992.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 686.40 ft above sea level (Cook County Highway Department bench mark).

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,650 ft³/s, Aug. 14, 1987, gage height, 14.03 ft; no flow, Jan. 12-Feb. 8, 1977, as a result of freezeup, Aug. 20, 25, 1986, and Sept. 8, 9, 11, 1999.

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

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	6.9	6.5	12	7.9	57	33	14	9.3	65	2.2	1.6	4.0
2	6.9	12	10	7.2	72	28	11	7.7	79	1.7	.99	2.4
3	9.7	7.5	8.6	7.9	38	21	9.3	7.5	41	1.9	1.2	1.5
4	82	4.7	8.1	8.5	26	20	12	4.6	28	1.6	1.3	1.1
5	32	5.7	7.9	8.8	20	16	37	4.1	69	1.6	1.1	.84

6	30	45	6.6	8.8	18	16	44	9.1	57	1.5	.99	6.2
7	16	171	e6.3	9.0	17	11	33	28	44	16	1.9	19
8	13	49	e5.7	9.0	81	10	21	26	40	2.1	.78	3.8
9	8.9	280	5.5	8.5	636	8.6	34	11	25	1.3	34	13
10	7.2	183	e5.0	8.4	290	8.4	27	77	18	1.1	42	9.3

11	6.1	67	4.4	8.8	95	15	45	275	12	.77	7.8	3.2
12	6.2	48	e5.0	9.7	59	22	70	85	58	.77	3.1	1.7
13	5.5	51	e7.0	12	46	25	41	42	37	.85	3.6	1.2
14	4.9	39	e7.3	28	57	20	31	32	19	.95	1.4	.69
15	6.5	31	7.7	49	57	73	36	22	15	.88	.98	.43

16	5.3	26	e7.9	47	64	104	26	28	10	.60	43	.31
17	4.1	22	e8.0	35	30	77	21	16	6.3	12	9.2	1.0
18	7.6	17	7.7	31	24	60	18	8.4	28	2.4	5.9	4.9
19	4.0	13	7.9	25	18	55	15	4.9	9.7	1.1	14	892
20	5.1	11	6.9	19	14	48	29	3.7	5.5	1.8	4.6	376

21	3.5	13	7.3	23	24	41	39	19	8.2	1.0	2.0	373
22	3.0	8.5	8.8	13	14	36	37	13	4.6	46	210	116
23	3.7	7.3	e8.3	12	11	32	42	12	3.2	60	361	126
24	8.4	6.7	e8.0	11	125	27	31	16	3.1	51	43	89
25	4.8	8.0	e7.1	9.3	242	21	23	17	4.7	81	59	65

26	6.0	21	e6.6	8.9	80	16	19	35	7.6	20	92	54
27	6.7	15	e6.8	7.9	49	14	16	66	1.9	7.8	24	44
28	4.6	11	e6.9	7.3	36	12	12	35	2.5	3.9	11	39
29	3.6	13	7.2	35	---	12	10	19	2.4	2.8	5.3	34
30	5.0	11	7.8	e162	---	11	9.6	11	2.7	2.2	3.9	28

31	5.3	---	8.3	91	---	13	---	22	---	2.2	20	---

TOTAL	322.5	1203.9	228.6	728.9	2300	906.0	812.9	966.3	707.4	331.02	1010.64	2310.57
MEAN	10.4	40.1	7.37	23.5	82.1	29.2	27.1	31.2	23.6	10.7	32.6	77.0
MAX	82	280	12	162	636	104	70	275	79	81	361	892
MIN	3.0	4.7	4.4	7.2	11	8.4	9.3	3.7	1.9	.60	.78	.31
CFSM	.34	1.32	.24	.77	2.69	.96	.89	1.02	.77	.35	1.07	2.53
IN.	.39	1.47	.28	.89	2.81	1.11	.99	1.18	.86	.40	1.23	2.82

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1974 - 2001, BY WATER YEAR (WY)
MEAN	16.5	29.2	28.3	25.7	35.5	49.9	59.6	41.8	28.0	18.8	26.2	20.7
MAX	63.4	120	107	85.7	113	202	136	148	87.6	83.6	136	77.0
(WY)	1999	1986	1983	1999	1997	1979	1983	1996	1996	1993	1987	2001
MIN	2.42	2.32	.62	.13	2.43	10.5	9.73	7.33	3.15	3.00	2.56	1.63
(WY)	1980	1977	1977	1977	1978	2000	1989	1977	1988	1979	1986	1974

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1974 - 2001
ANNUAL TOTAL	9496.83		11828.73
ANNUAL MEAN	25.9		32.4		31.6
HIGHEST ANNUAL MEAN					52.1	1993
LOWEST ANNUAL MEAN					9.25	1977
HIGHEST DAILY MEAN	481	Apr 20	892	Sep 19	1180	Aug 14 1987
LOWEST DAILY MEAN	.39	Jul 26,27	.31	Sep 16	.00	A
ANNUAL SEVEN-DAY MINIMUM	.59	Jul 21	.85	Jul 10	.00	Jan 12 1977
MAXIMUM PEAK FLOW			1370	Sep 19	1650	Aug 14 1987
MAXIMUM PEAK STAGE			10.62	Sep 19	14.03	Aug 14 1987
INSTANTANEOUS LOW FLOW			.23	Sep 17
ANNUAL RUNOFF (CFSM)	.85		1.06		1.04
ANNUAL RUNOFF (INCHES)	11.58		14.43		14.10
10 PERCENT EXCEEDS	59		65		73
50 PERCENT EXCEEDS	8.3		12		13
90 PERCENT EXCEEDS	1.7		2.0		1.7

A - Jan. 12 - Feb. 8, 1977, as a result of freezeup; Aug. 20, 25, 1986 and Sept. 8, 9, 11, 1999.