05594800 DATA: Discharge Tables, 1999

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.--October 1970 to current year. October 1980 to September 1994 (8:00 a.m. gage heights).

REVISED RECORDS.--WDR IL-73-1: Drainage area.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 381.40 ft above sea level.

REMARKS.--Records good except those for period of July 20 to Aug. 4, which are fair, and those for estimated daily discharges, which are poor. Gage-height telemeter at station.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	26	44	50	e14	1590	640	149	358	417	258	25	11
2	21	50	48	e17	1920	413	145	220	346	1040	16	9.5
3	17	470	43	e20	2080	300	172	155	312	1330	15	7.5
4	16	721	41	e25	2020	254	665	130	277	1620	19	4.6
5	17	437	49	e23	1860	229	641	368	719	756	14	6.3

6	24	224	59	e19	1020	325	693	894	603	221	12	7.0
7	69	125	63	e17	2060	335	1010	1080	270	144	12	7.2
8	51	81	62	e20	5050	328	1110	1160	181	464	43	7.3
9	35	61	56	e21	5910	1000	917	709	218	552	108	8.1
10	24	108	51	e18	6920	1260	624	274	200	314	55	6.8

11	18	441	45	e15	5490	1510	638	186	113	845	32	5.9
12	16	447	41	e16	3350	1390	622	203	516	850	25	7.8
13	15	325	44	e70	2190	747	353	908	812	375	22	8.2
14	15	180	42	e220	1650	372	258	1150	1220	156	19	11
15	14	114	37	e190	981	291	284	1320	1290	99	17	12

16	14	85	34	e180	463	255	740	1330	1170	76	15	8.7
17	17	70	32	e320	416	218	861	703	798	63	14	6.7
18	28	61	32	1260	363	192	784	500	328	54	11	6.2
19	50	52	34	1480	320	177	463	394	180	49	12	5.0
20	42	51	38	1630	278	166	298	274	130	42	13	5.5

21	29	53	43	1670	241	153	239	213	107	68	11	5.6
22	23	51	49	1720	213	141	227	185	92	82	11	6.3
23	19	45	41	1740	207	498	197	162	85	34	11	5.5
24	17	43	32	1810	212	1010	170	150	482	22	11	4.4
25	16	40	e26	1820	211	963	151	140	489	17	11	3.5

26	17	39	e22	1790	207	497	150	127	304	14	17	2.6
27	20	40	e20	1740	305	290	177	112	892	9.8	15	2.1
28	21	38	e18	1250	586	224	379	100	1000	13	12	2.9
29	24	35	e16	485	---	197	346	93	527	13	10	3.2
30	34	39	e15	312	---	173	442	89	214	23	14	2.0

31	73	---	e14	1060	---	156	---	105	---	25	13	---

TOTAL	822	4570	1197	20972	48113	14704	13905	13792	14292	9628.8	635	190.4
MEAN	26.5	152	38.6	677	1718	474	464	445	476	311	20.5	6.35
MAX	73	721	63	1820	6920	1510	1110	1330	1290	1620	108	12
MIN	14	35	14	14	207	141	145	89	85	9.8	10	2.0
CFSM	.06	.33	.08	1.46	3.70	1.02	1.00	.96	1.03	.67	.04	.01
IN.	.07	.37	.10	1.68	3.86	1.18	1.11	1.11	1.15	.77	.05	.02

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 1999, BY WATER YEAR (WY)
MEAN	87.8	281	441	409	619	707	725	524	327	142	101	92.8
MAX	506	1543	2380	1438	1954	2390	1771	3579	1214	530	822	1142
(WY)	1987	1994	1983	1974	1982	1978	1979	1995	1998	1981	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 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1971 - 1999
ANNUAL TOTAL	183310		142821.2
ANNUAL MEAN	502		391		370
HIGHEST ANNUAL MEAN					660	1973
LOWEST ANNUAL MEAN					74.6	1976
HIGHEST DAILY MEAN	4490	Mar 21	6920	Feb 10	15000	May 19 1995
LOWEST DAILY MEAN	14	A	2.0	Sep 30	.00	B
ANNUAL SEVEN-DAY MINIMUM	16	Oct 11	3.0	Sep 24	.75	Sep 15 1983
INSTANTANEOUS PEAK FLOW			7100	Feb 10	15300	May 19 1995
INSTANTANEOUS PEAK STAGE			19.00	Feb 10	25.38	May 19 1995
INSTANTANEOUS LOW FLOW			1.6	Sep 30
ANNUAL RUNOFF (CFSM)	1.08		.84		.80
ANNUAL RUNOFF (INCHES)	14.70		11.45		10.83
10 PERCENT EXCEEDS	1510		1130		1050
50 PERCENT EXCEEDS	152		114		73
90 PERCENT EXCEEDS	23		11		8.8

A - Oct. 15, 16, Dec. 31 (estimated), but may have been less during period of estimated discharges in Dec.
B - 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.