05594450 DATA: Discharge Tables, 2000

Station list Available data
KASKASKIA RIVER BASIN

05594450 SILVER CREEK NEAR TROY, IL

LOCATION.-- Lat 38°43'00", long 89°49'45", in SE1/4SW1/4 sec.12, T.3 N., R.7 W., Madison County, Hydrologic Unit 07140204, on right bank at upstream side of bridge on U.S. Highway 40, 0.2 mi upstream from railroad bridge, 1.9 mi upstream from East Fork Silver Creek, 1.9 mi southeast of Troy, and at mile 44.6.

DRAINAGE AREA.-- 154 mi².

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

DISCHARGE: October 1966 to current year.

STAGE: Water years 1994-2000.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-91.

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

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 438.91 ft above sea level.

REMARKS FOR CURRENT YEAR.-- Records good except those for the period of Oct. 1 to Feb. 17, which are poor.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	e1.0	e1.2	e1.5	e1.1	e2.0	18	12	15	32	55	694	23
2	e1.5	e3.0	e1.3	e1.0	e2.2	15	11	13	23	73	210	19
3	e2.0	e2.5	e2.5	e5.0	e2.4	14	11	11	18	63	70	17
4	e2.5	e2.2	e4.3	e10	e2.1	14	12	9.8	15	37	37	14
5	e2.0	e1.9	6.4	e6.0	e2.0	12	8.9	8.5	21	28	27	12

6	e1.8	e1.7	5.5	e4.0	e1.9	12	9.2	7.5	12	19	33	14
7	e2.0	e1.6	3.7	e3.5	e1.8	14	37	52	9.3	15	122	11
8	29	e1.5	3.0	e3.2	e1.7	13	17	96	8.1	12	739	9.3
9	14	e1.4	3.9	e5.0	e1.7	11	11	69	7.2	9.6	886	11
10	9.7	e1.3	37	e4.2	e1.8	9.0	12	33	5.9	9.1	604	16

11	6.4	e1.3	13	e3.5	e2.0	8.8	13	22	6.3	264	152	236
12	3.8	e1.2	8.2	e3.0	e2.3	11	11	17	24	545	47	185
13	2.3	e1.2	e6.5	e2.5	e3.5	11	8.8	18	12	618	30	151
14	2.4	e1.1	e5.4	e2.3	6.8	10	8.1	13	21	308	23	54
15	2.1	e1.1	e4.7	e2.1	4.6	10	7.5	9.4	21	72	18	35

16	1.5	e1.0	e4.1	e2.0	4.6	11	7.1	8.1	29	32	15	26
17	2.1	e1.0	e3.5	e1.9	3.9	11	8.1	7.1	34	23	16	18
18	2.2	e.95	e3.0	e5.5	309	9.9	6.6	6.1	22	114	398	19
19	2.3	e.95	e2.6	e4.0	224	12	6.0	5.1	28	1380	220	14
20	1.5	e.90	e2.2	e3.5	71	27	11	4.7	17	1930	47	11

21	e1.1	e.90	e2.0	e3.3	35	36	14	4.7	49	1290	28	8.5
22	e1.0	e.85	e1.8	e3.0	23	49	11	5.5	171	337	20	7.0
23	e.90	e1.4	e1.7	e2.7	17	33	9.2	39	76	69	16	5.6
24	e.85	e2.5	e1.6	e2.5	19	24	17	14	2060	33	233	8.5
25	e.80	e4.5	e1.5	e2.3	16	18	18	14	4500	23	477	187

26	e.74	e3.5	e1.4	e2.1	19	15	21	25	3320	17	605	464
27	e.68	e3.0	e1.3	e1.9	26	23	28	367	1730	14	682	605
28	e.64	e2.5	e1.3	e1.8	19	19	24	525	980	243	273	369
29	e.62	e2.0	e1.2	e1.7	21	16	18	326	349	1400	78	95
30	e.60	e1.7	e1.2	e1.8	---	14	15	91	99	3490	42	45

31	e.60	---	e1.1	e1.9	---	13	---	46	---	1550	30	---

TOTAL	100.63	51.85	138.4	98.3	846.3	513.7	403.5	1882.5	13699.8	14072.7	6872	2689.9
MEAN	3.25	1.73	4.46	3.17	29.2	16.6	13.4	60.7	457	454	222	89.7
MAX	29	4.5	37	10	309	49	37	525	4500	3490	886	605
MIN	.60	.85	1.1	1.0	1.7	8.8	6.0	4.7	5.9	9.1	15	5.6
CFSM	.02	.01	.03	.02	.19	.11	.09	.39	2.97	2.95	1.44	.58
IN.	.02	.01	.03	.02	.20	.12	.10	.45	3.31	3.40	1.66	.65

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2000, BY WATER YEAR (WY)
MEAN	23.4	85.2	164	143	208	228	241	146	110	76.2	31.7	26.0
MAX	165	509	902	562	646	927	738	827	501	570	296	408
(WY)	1987	1985	1983	1974	1982	1978	1994	1995	1998	1969	1998	1993
MIN	.23	.34	.42	.31	9.25	6.74	13.4	5.26	.91	1.44	.75	.093
(WY)	1972	1972	1977	1977	1978	1981	2000	1977	1988	1984	1971	1988

SUMMARY STATISTICS	FOR 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1967 - 2000
ANNUAL TOTAL	45174.74		41369.58
ANNUAL MEAN	124		113		123
HIGHEST ANNUAL MEAN					244	1983
LOWEST ANNUAL MEAN					23.1	1980
HIGHEST DAILY MEAN	5150	Feb 8	4500	Jun 25	7740	Apr 12 1979
LOWEST DAILY MEAN	.60 A	Oct 30,31	.60 A	Oct 30,31	.00	B
ANNUAL SEVEN-DAY MINIMUM	.67	Oct 25	.67	Oct 25	.00	Sep 29 1968
INSTANTANEOUS PEAK FLOW			5180	Jun 25	10600 C	Apr 12 1979
INSTANTANEOUS PEAK STAGE			16.38	Jun 25	17.94	May 17 1990
ANNUAL RUNOFF (CFSM)	.80		.73		.80
ANNUAL RUNOFF (INCHES)	10.91		9.99		10.86
10 PERCENT EXCEEDS	334		227		300
50 PERCENT EXCEEDS	19		11		15
90 PERCENT EXCEEDS	1.1		1.4		.77

A - Estimated, but may have been less during periods of estimated discharges in Oct.
B - Several days in 1967-68, 1973, 1988.
C - Gage height, 17.52 ft.