05595200 DATA: Discharge Tables, 2002

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 1995-2002. 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 rain gage, phone 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 11.3 ft³/s.

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	9.5	16	148	e29	1120	51	91	89	51	25	15	11
2	7.0	24	70	e27	176	93	80	78	49	23	13	10
3	6.9	24	52	e26	122	137	81	62	46	22	13	11
4	6.7	19	42	e25	88	71	71	56	43	22	13	11
5	21	17	37	e25	68	61	61	56	42	22	14	11

6	31	16	38	e26	67	74	58	275	43	21	195	10
7	16	16	37	e27	70	59	58	1120	40	21	50	11
8	13	17	32	e28	58	54	314	2100	38	20	23	12
9	11	17	30	e30	52	1820	283	2310	38	19	16	12
10	14	17	28	e31	49	490	121	533	84	18	14	11

11	20	15	26	33	46	151	86	171	602	18	15	10
12	125	15	89	32	45	130	77	215	2770	18	17	10
13	126	15	361	32	42	108	109	2290	379	18	16	10
14	164	12	717	32	40	88	92	491	121	17	15	11
15	34	11	171	29	39	459	76	175	81	17	13	15

16	137	14	1440	28	37	785	59	147	66	16	13	14
17	42	15	3290	28	36	184	54	548	56	17	12	70
18	26	16	698	25	35	136	60	629	50	113	15	184
19	21	16	169	28	126	406	50	176	46	129	22	140
20	17	16	110	32	229	385	107	131	42	24	41	216

21	18	14	83	30	86	152	214	110	40	20	24	72
22	16	13	74	30	59	102	186	88	37	18	14	24
23	17	13	76	33	51	91	78	79	35	49	13	18
24	88	91	58	86	48	81	65	83	33	23	14	15
25	127	59	48	48	46	1470	150	73	38	18	12	12

26	36	27	45	38	54	583	72	63	42	15	12	11
27	25	22	e38	35	52	252	284	59	32	15	13	11
28	22	27	e35	34	49	153	678	67	34	15	11	10
29	20	149	e33	33	---	255	149	160	28	15	12	11
30	19	1350	e31	93	---	183	106	72	26	15	12	10

31	18	---	e30	1110	---	119	---	57	---	13	11	---

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1970 - 2002, BY WATER YEAR (WY)
MEAN	41.90	109.0	128.6	106.5	158.8	192.9	189.2	153.3	98.48	78.32	42.04	58.40
MAX	270	516	590	338	505	611	751	1306	430	322	271	471
(WY)	1987	1986	1983	1974	1982	1984	1994	1995	2000	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 2001 CALENDAR YEAR		FOR 2002 WATER YEAR		WATER YEARS 1970 - 2002
ANNUAL TOTAL	33422.1		49857.1
ANNUAL MEAN	91.57		136.6		112.8
HIGHEST ANNUAL MEAN					198	1973
LOWEST ANNUAL MEAN					23.5	1976
HIGHEST DAILY MEAN	3290	Dec 17	3290	Dec 17	13300	May 17 1995
LOWEST DAILY MEAN	6.7	Oct 4	6.7	Oct 4	4.2	Oct 17 1976
ANNUAL SEVEN-DAY MINIMUM	8.4	Sep 28	11	Aug 31	4.8	Oct 12 1976
MAXIMUM PEAK FLOW			4090	Dec 17	23400	Apr 29 1996
MAXIMUM PEAK STAGE			39.86	Dec 17	44.4 A	Apr 29 1996
INSTANTANEOUS LOW FLOW			6.0	Oct 4
ANNUAL RUNOFF (CFSM)	0.71		1.06		0.87
ANNUAL RUNOFF (INCHES)	9.64		14.38		11.88
10 PERCENT EXCEEDS	146		215		189
50 PERCENT EXCEEDS	32		38		28
90 PERCENT EXCEEDS	13		13		9.2

A - From floodmark.