05591200 DATA: Discharge Tables, 1999

Station list Available data
KASKASKIA RIVER BASIN

05591200 KASKASKIA RIVER AT COOKS MILLS, IL

LOCATION.--Lat 39°35'01", long 88°24'50", in NW1/4SW1/4 sec.10, T.13 N., R.7 E., Coles County, Hydrologic Unit 07140201, on right upstream side of bridge in Cooks Mills, 3.8 mi downstream from Flat Branch, and at mile 238.1.

DRAINAGE AREA.--473 mi².

PERIOD OF RECORD.--October 1970 to current year.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 617.40 ft above sea level. Prior to July 30, 1981, at site 200 ft downstream at same datum.

REMARKS.--Records good except those for estimated daily discharges, which are poor. U.S. Army Corps of Engineers satellite 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	8.3	31	22	e15	1150	303	176	634	254	237	33	8.4
2	10	37	23	e14	1330	287	184	554	1240	194	21	7.9
3	15	37	25	e13	1420	278	184	495	1800	171	18	11
4	17	37	24	e13	1250	327	179	455	1790	144	14	14
5	12	47	21	e13	1010	421	177	447	2070	122	9.8	13

6	12	52	18	e15	812	448	175	464	1980	104	12	12
7	13	44	20	e21	1750	421	167	475	1890	91	12	9.0
8	26	39	23	e22	2780	398	167	439	1630	80	11	8.4
9	30	35	22	e20	3230	383	201	384	1200	70	11	11
10	24	82	25	e18	2880	388	275	332	839	63	36	11

11	16	101	26	e16	2120	407	324	296	611	55	39	12
12	12	139	24	e15	1720	392	360	282	481	48	23	12
13	10	128	22	e16	1470	393	419	319	451	42	26	11
14	9.5	91	21	e17	1280	436	379	411	806	36	110	13
15	9.7	67	23	e17	1040	488	351	574	693	32	362	13

16	13	54	24	e19	861	486	576	625	635	28	547	9.4
17	13	46	24	e21	729	449	1470	556	528	25	458	6.7
18	14	41	23	e250	641	414	2410	466	401	23	231	5.9
19	16	37	22	e400	574	381	2280	447	313	21	118	5.9
20	20	33	22	e370	515	333	1820	556	264	21	73	5.4

21	27	31	25	e380	457	301	1550	585	236	20	50	4.8
22	23	27	30	e2100	404	289	1760	551	238	30	38	5.9
23	18	23	29	e3300	367	273	2190	493	295	32	30	7.9
24	16	23	25	e3800	347	255	1850	491	307	24	26	11
25	14	25	25	e4000	336	240	1390	462	311	19	23	11

26	13	24	28	e3100	316	224	1040	399	361	23	29	10
27	12	25	27	e2400	304	206	835	333	519	26	33	11
28	11	26	22	e1750	304	197	742	283	426	17	26	13
29	17	27	19	1320	---	193	704	252	375	42	19	18
30	29	24	e17	1040	---	187	687	233	301	72	13	20

31	32	---	e16	913	---	176	---	223	---	55	10	---

TOTAL	512.5	1433	717	25408	31397	10374	25022	13516	23245	1967	2461.8	312.6
MEAN	16.5	47.8	23.1	820	1121	335	834	436	775	63.5	79.4	10.4
MAX	32	139	30	4000	3230	488	2410	634	2070	237	547	20
MIN	8.3	23	16	13	304	176	167	223	236	17	9.8	4.8
CFSM	.03	.10	.05	1.73	2.37	.71	1.76	.92	1.64	.13	.17	.02
IN.	.04	.11	.06	2.00	2.47	.82	1.97	1.06	1.83	.15	.19	.02

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 1999, BY WATER YEAR (WY)
MEAN	153	321	542	499	632	787	759	798	524	281	184	97.4
MAX	1189	2205	1626	1862	2028	2565	2116	2809	1864	1166	952	817
(WY)	1994	1993	1988	1974	1982	1979	1994	1996	1974	1973	1981	1993
MIN	12.7	24.4	16.7	14.2	63.4	132	85.5	103	48.0	16.8	14.9	10.4
(WY)	1985	1977	1977	1977	1977	1992	1971	1976	1988	1988	1988	1999

SUMMARY STATISTICS	FOR 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1971 - 1999
ANNUAL TOTAL	236767.9		136365.9
ANNUAL MEAN	649		374		464
HIGHEST ANNUAL MEAN					838	1973
LOWEST ANNUAL MEAN					185	1980
HIGHEST DAILY MEAN	4580	May 5	4000 A	Jan 25	9690	Apr 14 1994
LOWEST DAILY MEAN	6.7	Sep 13	4.8	Sep 21	.00	Sep 11 1988
ANNUAL SEVEN-DAY MINIMUM	7.3	Sep 11	6.1	Sep 17	2.7	Sep 8 1988
INSTANTANEOUS PEAK FLOW			4180	Jan 25	9950	Apr 13 1994
INSTANTANEOUS PEAK STAGE			13.25	Jan 25	17.30	Apr 13 1994
INSTANTANEOUS LOW FLOW			4.5	Sep 21
ANNUAL RUNOFF (CFSM)	1.37		.79		.98
ANNUAL RUNOFF (INCHES)	18.62		10.72		13.33
10 PERCENT EXCEEDS	2020		1170		1250
50 PERCENT EXCEEDS	274		80		182
90 PERCENT EXCEEDS	13		12		19

A - Estimated.