05588000 DATA: Discharge Tables, 2002

Station list Available data
CAHOKIA CREEK BASIN


LOCATION.-- Lat 38°50'30", long 90°01'59" (NAD of 1927), in SE1/4NW1/4 sec.31, T.5 N., R.8 W., Madison County, Hydrologic Unit 07140101, on right bank at upstream side of bridge on State Highway 143, 0.8 mi northeast of Wanda, 2.2 mi upstream from mouth, 5 mi west of Edwardsville, and at mile 2.9.

DRAINAGE AREA.-- 36.7 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: April 1940 to current year.
	STAGE: Water years 1994-2002.

REVISED RECORDS.-- WSP 1175: 1941, 1942(M). WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 429.52 ft above NGVD of 1929. Prior to Oct. 1, 1960, water-stage recorder at site 60 ft upstream at datum 2.00 ft higher. Oct. 1, 1960, to June 23, 1965, nonrecording gage at site 30 ft upstream at present datum. June 24, 1965, to May 10, 1967, nonrecording gage at present site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 9,340 ft³/s, Aug. 15, 1946, gage height, 18.41 ft, site and datum then in use; no flow for many days 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	1.3	6.0	62	e9.0	230	e13	34	74	8.7	4.1	1.2	0.69
2	1.2	6.5	36	e8.5	70	124	30	78	8.1	3.8	1.1	0.66
3	1.3	5.7	26	e8.0	52	77	24	29	7.5	3.6	1.1	0.66
4	1.2	5.1	20	e8.0	37	31	22	22	6.8	3.4	1.00	0.64
5	3.0	4.9	18	e7.5	28	26	21	21	7.5	3.3	0.97	0.63

6	2.8	4.6	17	e7.5	24	30	20	599	7.5	3.0	0.95	0.69
7	1.6	4.3	15	e8.0	22	23	20	1380	6.5	2.8	0.90	0.67
8	1.3	4.5	13	e8.0	20	20	92	390	5.8	2.8	0.86	0.68
9	1.2	3.8	12	e8.5	19	217	58	371	5.4	2.7	0.83	0.67
10	132	3.9	11	e8.5	19	63	31	85	59	2.6	0.83	0.67

11	89	3.9	10	e9.0	18	43	24	60	616	2.7	8.7	0.66
12	370	3.6	22	10	17	36	22	1300	442	2.6	23	0.66
13	98	3.6	104	10	15	32	22	1750	63	2.7	2.5	0.66
14	72	3.6	244	10	14	29	21	177	30	2.4	1.9	0.77
15	27	3.5	83	9.2	14	42	19	52	21	2.3	1.5	0.79

16	141	3.6	379	8.7	13	79	16	138	16	2.1	1.5	0.79
17	29	3.4	568	8.8	12	40	15	268	13	2.0	5.1	3.1
18	14	3.3	110	8.1	12	32	14	163	12	2.0	15	2.6
19	11	4.0	64	9.4	27	46	24	47	10	2.0	178	10
20	8.5	3.5	42	9.2	53	72	175	31	8.4	1.9	13	68

21	7.3	2.9	34	9.6	25	41	93	22	7.7	1.9	3.7	11
22	14	3.3	31	9.0	17	29	48	18	7.1	1.8	2.2	3.0
23	48	3.2	29	9.7	15	27	30	16	6.5	2.0	12	1.8
24	226	138	22	15	e13	27	24	14	6.7	2.0	21	1.5
25	72	38	e17	16	e12	198	25	14	7.9	1.7	3.1	1.3

26	20	17	e15	12	e12	120	19	12	6.5	3.6	1.8	1.1
27	12	15	e14	16	e13	126	107	11	5.5	11	1.4	1.0
28	10	68	e13	14	e13	137	107	11	5.1	2.4	1.1	0.96
29	11	77	e12	12	---	102	39	11	4.6	1.7	0.92	0.87
30	8.2	252	e11	80	---	65	28	10	4.3	1.4	0.80	0.80

31	6.6	---	e10	655	---	42	---	9.4	---	1.2	0.73	---

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 2002, BY WATER YEAR (WY)
MEAN	7.692	18.71	26.82	30.88	36.92	41.42	47.05	40.33	30.91	20.10	12.34	7.413
MAX	68.5	223	173	235	117	197	211	243	202	156	305	94.5
(WY)	1970	1947	1968	1950	1951	1978	1944	1943	1957	1969	1946	1993
MIN	0.000	0.000	0.000	0.000	0.091	0.045	0.26	0.070	0.022	0.052	0.005	0.000
(WY)	1954	1954	1954	1956	1954	1954	1954	1954	1955	1966	1953	1953

SUMMARY STATISTICS	FOR 2001 CALENDAR YEAR		FOR 2002 WATER YEAR		WATER YEARS 1941 - 2002
ANNUAL TOTAL	9401.88		18388.11
ANNUAL MEAN	25.76		50.38		26.65
HIGHEST ANNUAL MEAN					50.7	1969
LOWEST ANNUAL MEAN					1.39	1954
HIGHEST DAILY MEAN	568	Dec 17	1750	May 13	4270	Aug 15 1946
LOWEST DAILY MEAN	0.98	Jul 16	0.63	Sep 5	0.00	A
ANNUAL SEVEN-DAY MINIMUM	1.1	Jul 10	0.66	Sep 2	0.00	Oct 11 1940
MAXIMUM PEAK FLOW			3460	May 12	9340	Aug 15 1946
MAXIMUM PEAK STAGE			16.31	May 12	18.41 B	Aug 15 1946
INSTANTANEOUS LOW FLOW			0.62	Sep 3-6, 12
ANNUAL RUNOFF (CFSM)	0.70		1.37		0.73
ANNUAL RUNOFF (INCHES)	9.53		18.64		9.86
10 PERCENT EXCEEDS	61		100		42
50 PERCENT EXCEEDS	8.5		12		3.6
90 PERCENT EXCEEDS	1.9		1.2		0.01

	A - Many days in most years.
	B - Site and datum then in use.