05587900 DATA: Discharge Tables, 2004

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 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	e3.0	e22	47	91	e36	89	174	256	331	14	61	10
2	e2.5	e15	39	80	e50	81	137	181	168	17	32	8.7
3	e2.4	e10	36	74	e89	74	114	112	121	54	22	7.7
4	e2.3	e7.0	37	1480	e94	874	91	74	94	42	20	6.9
5	e2.2	e9.0	39	546	e77	2960	77	60	76	31	17	6.4

6	e2.1	e12	37	308	e66	1070	69	50	65	397	12	6.2
7	e2.0	e14	34	252	e60	301	64	39	56	177	9.9	5.6
8	e2.8	e10	33	167	e53	188	59	32	49	67	8.7	5.2
9	e4.0	e7.0	33	138	e60	148	52	28	50	41	7.9	4.9
10	6.0	e6.4	38	115	78	121	49	25	62	29	7.8	4.6

11	e12	e5.8	40	100	127	105	51	59	75	23	7.3	4.6
12	e4.5	e5.6	33	94	212	89	47	52	66	29	6.5	4.6
13	e4.2	e5.2	30	84	145	78	42	964	54	25	5.9	4.5
14	e11	e5.0	30	77	e120	77	37	5680	97	20	5.7	4.3
15	e8.0	e7.0	30	72	e110	71	35	5300	53	14	5.5	4.7

16	e12	e5.4	33	63	e100	70	33	757	57	11	5.4	8.6
17	e20	e6.4	31	160	e90	69	32	266	144	11	5.4	5.4
18	e10	3580	30	639	e130	65	31	288	115	10	5.3	5.8
19	e8.0	2730	30	250	265	58	29	1140	98	9.3	5.4	4.9
20	e7.0	418	26	165	333	57	29	689	54	9.7	6.0	4.5

21	e6.5	195	26	e115	250	53	30	236	39	9.8	6.6	4.3
22	e6.0	133	26	e90	163	47	27	153	35	11	8.7	4.0
23	e5.5	129	318	e74	160	45	28	117	30	13	7.0	3.7
24	e5.0	241	348	e64	514	45	37	97	25	13	33	3.4
25	e7.0	160	142	e57	255	49	69	418	21	24	34	3.3

26	e6.4	104	95	e54	161	480	57	1680	19	27	213	3.1
27	e5.6	80	75	e64	122	1380	39	3700	17	27	96	3.1
28	e7.0	67	71	e52	102	568	31	5720	16	21	40	3.2
29	e6.4	56	227	e46	93	1120	29	2490	15	22	28	3.2
30	e6.0	51	233	e42	---	458	45	416	14	370	17	3.3

31	e5.6	---	126	e38	---	258	---	778	---	164	13	---

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 2004, BY WATER YEAR (WY)
MEAN	44.8	104	167	157	217	288	310	259	140	54.8	31.1	45.3
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 2003 CALENDAR YEAR		FOR 2004 WATER YEAR		WATER YEARS 1969 - 2004
ANNUAL TOTAL	40522.0		69832.3
ANNUAL MEAN	111		191		151
HIGHEST ANNUAL MEAN					297	1985
LOWEST ANNUAL MEAN					32.4	1980
HIGHEST DAILY MEAN	3580	Nov 18	5720	May 28	7700	May 13 2002
LOWEST DAILY MEAN	2.0 A	Oct 7	2.0 A	Oct 7	0.00	B
ANNUAL SEVEN-DAY MINIMUM	2.3	Oct 2	2.3	Oct 2	0.00	Aug 29 1987
MAXIMUM PEAK FLOW			6320	May 15	8310 C	May 13 2002
MAXIMUM PEAK STAGE			20.03	May 15	24.74 D	Apr 12 1979
ANNUAL RUNOFF (CFSM)	0.524		0.900		0.712
ANNUAL RUNOFF (INCHES)	7.11		12.25		9.68
10 PERCENT EXCEEDS	207		292		274
50 PERCENT EXCEEDS	30		42		27
90 PERCENT EXCEEDS	5.5		5.4		2.2

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