05594800 DATA: Discharge Tables, 2001

Station list Available data
KASKASKIA RIVER BASIN

05594800 SILVER CREEK NEAR FREEBURG, IL

LOCATION.-- Lat 38°24'22", long 89°52'26", in NE1/4NE1/4 sec.33, T.1 S., R.7 W., St. Clair County, Hydrologic Unit 07140204, on left bank at downstream side of bridge on State Highway 15, 2.2 mi southeast of Freeburg, 4.8 mi northwest of Fayetteville, and at mile 9.6.

DRAINAGE AREA.-- 464 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1970 to current year.

STAGE: Water years 1995-2001. October 1980 to September 1994 (8:00 a.m. gage heights).

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-91.

REVISED RECORDS.-- WDR IL-73-1: 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 381.40 ft above sea level.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 15,300 ft³/s, May 19, 1995, gage height, 25.38 ft; minimum discharge, no flow, Aug. 4-6, 1993, during period of backwater from the Mississippi River; minimum daily discharge unaffected by backwater, 0.41 ft³/s, Sept. 17, 1983.

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

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	146	49	240	e92	1350	1600	100	56	905	20	26	31
2	94	49	198	e88	1500	957	99	53	1070	19	24	24
3	63	50	183	e86	1430	354	253	51	836	18	28	20
4	52	57	170	e80	820	269	375	48	291	31	35	17
5	223	50	152	e86	338	225	227	46	799	79	35	16

6	962	68	137	e92	246	193	170	48	984	37	26	15
7	1060	572	130	e100	210	166	150	86	1040	25	22	15
8	1150	1060	127	e110	191	154	134	88	1100	24	21	18
9	1170	1140	118	e118	478	143	127	63	1090	21	19	107
10	574	1260	114	e110	1250	138	373	53	443	18	95	199

11	190	1470	114	e102	1960	137	369	47	160	16	79	75
12	108	1740	149	e97	2190	134	777	43	104	14	30	38
13	74	1760	237	e92	1910	143	1010	40	77	14	23	26
14	56	1610	250	e250	1570	144	1110	37	61	14	21	21
15	45	1370	279	e900	1290	133	793	35	52	13	18	17

16	46	798	e230	e1100	1320	287	303	34	47	12	16	15
17	535	362	e170	e1250	1060	460	193	33	46	12	14	14
18	1050	247	e150	e1200	460	321	148	33	43	22	15	19
19	903	189	e140	e1000	287	239	125	306	37	932	15	135
20	415	152	e130	e600	246	186	108	170	32	1580	13	202

21	217	128	e120	e300	223	161	99	164	80	964	13	80
22	146	112	e110	e220	205	149	98	277	121	154	12	47
23	111	104	e100	e170	195	140	96	160	78	82	11	32
24	95	96	e94	e130	197	130	91	98	47	146	70	25
25	83	269	e86	e120	862	120	84	83	35	362	910	21

26	71	1030	e80	e112	1250	117	75	73	28	132	1020	18
27	62	1170	e76	e110	1580	107	73	63	25	66	340	15
28	55	1250	e80	e120	1650	101	70	53	24	45	97	14
29	51	869	e84	e145	---	99	64	45	22	40	48	13
30	47	356	e90	778	---	101	60	42	20	33	46	13

31	48	---	e96	1120	---	101	---	101	---	29	62	---

TOTAL	9902	19437	4434	10878	26268	7709	7754	2529	9697	4974	3204	1302
MEAN	319	648	143	351	938	249	258	81.6	323	160	103	43.4
MAX	1170	1760	279	1250	2190	1600	1110	306	1100	1580	1020	202
MIN	45	49	76	80	191	99	60	33	20	12	11	13
CFSM	.69	1.40	.31	.76	2.02	.54	.56	.18	.70	.35	.22	.09
IN.	.79	1.56	.36	.87	2.11	.62	.62	.20	.78	.40	.26	.10

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 2001, BY WATER YEAR (WY)
MEAN	92.8	284	418	395	612	671	688	499	349	168	124	95.6
MAX	506	1543	2380	1438	1954	2390	1771	3579	1214	902	822	1142
(WY)	1987	1994	1983	1974	1982	1978	1979	1995	1998	2000	1998	1993
MIN	2.55	2.21	6.86	3.87	42.2	34.5	45.3	25.4	12.4	12.9	10.7	4.30
(WY)	1972	1972	1977	1977	1978	1981	1981	1976	1988	1976	1971	1983

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1971 - 2001
ANNUAL TOTAL	136054.7		108088
ANNUAL MEAN	372		296		365
HIGHEST ANNUAL MEAN					660	1973
LOWEST ANNUAL MEAN					74.6	1976
HIGHEST DAILY MEAN	5210	Jun 28	2190	Feb 12	15000	May 19 1995
LOWEST DAILY MEAN	3.2 A	Jan 2	11	Aug 23	.00	B
ANNUAL SEVEN-DAY MINIMUM	12	Jan 27	13	Aug 17	.75	Sep 15 1983
MAXIMUM PEAK FLOW			2320	Feb 12	15300	May 19 1995
MAXIMUM PEAK STAGE			12.72	Feb 12	25.38	May 19 1995
INSTANTANEOUS LOW FLOW			9.7	Aug 23,24
ANNUAL RUNOFF (CFSM)	.80		.64		.79
ANNUAL RUNOFF (INCHES)	10.91		8.67		10.68
10 PERCENT EXCEEDS	1100		1060		1050
50 PERCENT EXCEEDS	90		108		73
90 PERCENT EXCEEDS	21		20		8.8

	A - Estimated, but may have been less during period of estimated discharges in early Jan.
	B - Aug. 4-6, 1993, during period of backwater from Mississippi River. Minimum daily
	discharge unaffected by backwater, 0.41 ft³/s, Sept. 17, 1983.