05587900 DATA: Discharge Tables, 2003

Station list Available data
CAHOKIA CREEK BASIN


LOCATION.-- Lat 38°49'28", long 89°58'29" (NAD of 1927), in NW1/4SE1/4 sec.3, T.4 N., R.8 W., Madison County, Hydrologic Unit 07140101, on right bank at upstream side of bridge on State Highway 143 in Edwardsville, and at mile 9.4.

DRAINAGE AREA.-- 212 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: August 1969 to current year.
	STAGE: Water years 1994 to current year.
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 425.62 ft above NGVD of 1929. Apr. 8, 1983, to July 2, 1985, nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 8,310 ft³/s, May 13, 2002, gage height, 23.42 ft; Maximum gage height, 24.74 ft, Apr. 12, 1979; no flow many days in 1987-88, 1991.

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

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	4.3	20	6.2	60	e9.5	e28	37	69	33	29	13	1880
2	4.2	16	5.9	47	e12	e25	33	58	31	26	12	2230
3	11	13	e5.2	40	e17	e28	30	50	55	23	58	438
4	12	10	e5.0	31	27	e35	30	149	52	23	55	145
5	11	12	e4.7	34	23	45	57	902	40	18	24	e65

6	12	13	e4.5	33	16	40	46	338	37	16	15	e40
7	10	17	e4.6	34	13	34	65	424	49	14	11	e25
8	8.5	16	e4.8	42	e10	30	59	249	39	12	e10	e16
9	7.3	16	e4.9	37	e9.4	29	44	1860	29	10	e9.0	e11
10	6.5	15	e5.0	30	e9.0	24	37	2300	392	26	e8.2	e9.0

11	6.2	13	e5.2	23	e9.4	22	32	2060	388	33	e7.2	e8.0
12	6.0	12	e5.4	e17	e10	26	29	367	462	17	e6.4	e10
13	5.2	12	e5.8	e15	e12	259	26	187	1570	13	e5.6	e12
14	4.6	9.7	e6.6	e14	e24	238	24	138	316	11	e5.2	e14
15	4.9	15	7.0	e13	263	113	23	109	156	9.3	e4.6	e11

16	4.7	12	7.2	e12	267	78	27	93	93	8.6	e4.2	e9.0
17	3.7	11	7.2	e11	96	63	83	80	65	8.0	e4.0	e7.5
18	4.8	11	22	e10	103	54	73	76	51	501	e3.8	e6.8
19	15	10	195	e9.5	212	88	51	69	47	533	e3.7	e7.4
20	10	9.3	99	e8.8	326	376	88	62	39	118	e3.6	e10

21	11	8.8	50	e8.2	165	218	98	118	32	58	e4.6	e8.0
22	12	8.2	32	e7.4	110	133	64	62	25	34	e4.8	e7.4
23	13	7.7	24	e6.8	97	83	47	47	22	22	e4.0	e5.0
24	12	7.6	e18	e6.4	71	65	68	40	19	16	e3.6	e4.0
25	23	7.7	e15	e6.0	57	55	279	176	25	13	e3.1	e5.0

26	44	7.5	e12	e5.8	e43	49	172	111	719	11	e2.7	e7.0
27	29	7.3	e11	e5.6	e36	42	97	63	203	9.5	e2.5	e10
28	18	7.0	e12	e5.5	e31	46	77	51	82	11	e2.3	e7.5
29	45	6.9	e14	e5.8	---	62	119	52	50	52	e2.5	e5.5
30	32	6.6	e19	e6.5	---	52	97	44	36	35	e9.0	e4.5

31	28	---	58	e8.0	---	43	---	42	---	18	e40	---

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 2003, BY WATER YEAR (WY)
MEAN	45.9	99.6	169	157	219	286	317	237	142	54.8	31.3	46.5
MAX	366	649	915	834	782	1120	1251	1511	562	409	186	486
(WY)	1970	1986	1983	1974	1985	1978	1994	2002	1998	2000	2000	1993
MIN	0.82	1.05	1.08	1.21	14.7	12.0	12.0	15.0	2.04	1.18	1.05	0.15
(WY)	1996	1981	1990	1977	2000	2000	2000	1988	1988	1988	1991	1988

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR		FOR 2003 WATER YEAR		WATER YEARS 1969 - 2003
ANNUAL TOTAL	92044.6		31292.6
ANNUAL MEAN	252		85.7		150
HIGHEST ANNUAL MEAN					297	1985
LOWEST ANNUAL MEAN					32.4	1980
HIGHEST DAILY MEAN	7700	May 13	2300	May 10	7700	May 13 2002
LOWEST DAILY MEAN	3.7	Oct 17	2.3 A	Aug 28	0.00	B
ANNUAL SEVEN-DAY MINIMUM	4.8	Dec 4	3.0	Aug 23	0.00	Aug 29 1987
MAXIMUM PEAK FLOW			3880	Sep 1	8310 C	May 13 2002
MAXIMUM PEAK STAGE			15.29	Sep 1	24.74 D	Apr 12 1979
ANNUAL RUNOFF (CFSM)	1.19		0.40		0.71
ANNUAL RUNOFF (INCHES)	16.15		5.49		9.60
10 PERCENT EXCEEDS	492		147		273
50 PERCENT EXCEEDS	29		23		27
90 PERCENT EXCEEDS	5.9		5.2		2.2

	A - Estimated, but may have been less during period of estimated discharges in August.
	B - Many days in 1987-88, 1991.
	C - Gage height, 23.42 ft.
	D - Discharge, 8,200 ft³/s.