05595200 DATA: Discharge Tables, 2003

Station list Available data
KASKASKIA RIVER BASIN


LOCATION.-- Lat 38°19'26", long 89°58'15" (NAD of 1927), in SW1/4SE1/4 sec.27 projected, T.2 S., R.8 W., St. Clair County, Hydrologic Unit 07140204, on left bank at downstream side of bridge on State Highway 156, 2 mi northeast of Hecker, 5 mi west of New Athens, and at mile 17.3.

DRAINAGE AREA.-- 129 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1969 to current year.
	STAGE: Water years 1995 to current year. October 1980 to September 1994 (8 a.m. gage heights).
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1978-91.

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

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 375.00 ft above NGVD of 1929. June 28, 1976, to Nov. 9, 1978, nonrecording gage at same site and datum.

REMARKS.-- Three sewage-treatment plants 13-16 mi upstream.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 23,400 ft³/s, April 29, 1996, gage height, 44.4 ft, from floodmark; minimum daily discharge, 4.2 ft³/s, Oct. 17, 1976.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. Effluent from three sewage-treatment plants 13-16 mi upstream averaged about 11.0 ft³/s.

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	9.8	37	13	e120	e21	e80	52	53	38	86	16	392
2	9.8	28	14	e450	e23	142	46	47	36	73	16	382
3	10	29	14	61	e26	78	43	40	69	64	25	154
4	11	36	14	51	29	65	55	506	47	55	69	43
5	16	80	15	50	22	69	144	1520	39	50	34	30

6	12	80	14	54	21	53	61	301	39	44	22	25
7	11	34	e13	44	20	45	86	900	55	39	18	22
8	10	27	e13	38	21	43	57	574	39	35	16	20
9	10	25	e13	35	19	40	47	333	32	32	15	19
10	9.6	60	e13	31	e18	35	44	146	419	71	15	18

11	9.6	34	16	27	e17	34	42	261	3200	45	14	18
12	9.1	23	14	27	e17	288	41	99	3760	35	14	17
13	9.2	20	15	e25	e17	286	39	73	1430	31	13	18
14	9.2	20	18	e23	e45	136	37	66	451	31	13	19
15	9.4	25	19	e21	107	89	33	71	161	29	14	19

16	9.4	29	17	e20	88	71	34	61	113	25	13	17
17	9.5	23	16	e19	56	62	76	55	83	24	12	16
18	11	21	33	e18	50	58	45	53	71	408	12	16
19	81	19	115	e17	334	476	39	49	67	149	12	14
20	32	19	64	e16	424	308	38	58	65	50	12	12

21	17	18	37	e15	249	178	37	49	55	36	12	12
22	14	17	24	e14	355	102	33	37	51	29	14	14
23	11	17	24	e13	152	77	30	33	47	25	14	13
24	11	17	e24	e12	102	77	123	32	43	23	14	12
25	658	17	24	e12	74	80	184	627	39	21	14	12

26	151	14	e20	e12	60	91	146	137	3670	20	15	19
27	33	14	e19	e13	e54	67	61	73	887	19	17	178
28	23	15	e18	e14	e56	77	203	56	176	18	18	40
29	1270	14	e24	e15	---	116	151	46	120	19	84	22
30	257	13	e45	e16	---	69	70	42	98	18	41	17

31	58	---	e700	e18	---	58	---	46	---	17	99	---

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1970 - 2003, BY WATER YEAR (WY)
MEAN	43.3	107	126	105	157	190	186	155	111	77.6	41.5	58.3
MAX	270	516	590	338	505	611	751	1306	513	322	271	471
(WY)	1987	1986	1983	1974	1982	1984	1994	1995	2003	1981	1998	1993
MIN	6.51	7.53	9.66	7.19	19.1	19.4	20.2	18.4	14.9	11.6	7.64	6.66
(WY)	1972	1972	1977	1977	1978	1981	1981	1988	1972	1970	1971	1976

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR		FOR 2003 WATER YEAR		WATER YEARS 1970 - 2003
ANNUAL TOTAL	43422.6		40165.6
ANNUAL MEAN	119		110		113
HIGHEST ANNUAL MEAN					198	1973
LOWEST ANNUAL MEAN					23.5	1976
HIGHEST DAILY MEAN	2770	Jun 12	3760	Jun 12	13300	May 17 1995
LOWEST DAILY MEAN	9.1	Oct 12	9.1	Oct 12	4.2	Oct 17 1976
ANNUAL SEVEN-DAY MINIMUM	9.3	Oct 11	9.3	Oct 11	4.8	Oct 12 1976
MAXIMUM PEAK FLOW			6420	Jun 26	23400	Apr 29 1996
MAXIMUM PEAK STAGE			41.04	Jun 26	44.4 A	Apr 29 1996
INSTANTANEOUS LOW FLOW			6.7	Oct 13
ANNUAL RUNOFF (CFSM)	0.92		0.85		0.87
ANNUAL RUNOFF (INCHES)	12.52		11.58		11.87
10 PERCENT EXCEEDS	203		167		187
50 PERCENT EXCEEDS	33		34		28
90 PERCENT EXCEEDS	11		13		9.3

A - From floodmark.