05591200 DATA: Discharge Tables, 2001

Station list Available data
KASKASKIA RIVER BASIN

05591200 KASKASKIA RIVER AT COOKS MILLS, IL

LOCATION.-- Lat 39°35'00", long 88°24'48", 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.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1970 to current year.

STAGE: Water years 1994-2001.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1977-91. Additional chemical data for water years 1961-68, 1971-72 are published in Water-Resources Investigations 78-24 and 79-25 as site O 02.

SEDIMENT: January 1979 to September 1997.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, 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.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 9,950 ft³/s, April 13, 1994, gage height, 17.30 ft; no flow Sept. 11, 1988.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 1,710 mg/L, May 1, 1983; minimum daily, 0 mg/L, Sept. 10, 11, 1988.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 26,100 tons, Apr. 13, 1979; minimum daily, 0 ton, Sept. 10, 11, 1988.

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	554	129	432	e120	2880	2120	240	213	136	96	41	40
2	379	126	359	e125	2510	1520	228	261	144	95	35	54
3	288	124	306	e130	1730	1140	215	218	147	86	63	46
4	247	119	274	e130	1160	925	201	191	197	83	83	35
5	2650	114	258	e135	812	778	189	173	344	110	69	29

6	4040	112	246	e135	593	660	185	174	785	125	49	27
7	3170	147	237	e130	493	561	197	182	1210	100	39	26
8	2380	216	231	e120	479	490	203	168	1820	81	30	25
9	1730	348	217	e112	856	439	196	157	2200	76	26	26
10	1260	781	198	e105	1660	398	188	151	1850	85	27	40

11	955	1140	211	e100	2260	363	545	143	1350	81	27	73
12	699	1470	404	e100	2150	340	1070	135	977	63	26	72
13	501	1480	534	e120	1600	329	1360	142	739	54	22	52
14	378	1320	588	e180	1240	321	1140	135	560	50	19	42
15	325	1170	e500	434	1210	300	873	122	437	43	18	35

16	296	1030	e420	582	1340	303	677	118	361	40	18	30
17	284	873	e360	620	1400	384	535	119	306	36	18	26
18	262	716	e320	597	1220	504	426	171	262	34	19	24
19	239	581	e280	486	1000	570	352	246	231	36	27	27
20	218	469	e250	379	815	551	315	237	215	37	30	29

21	203	385	e220	307	673	505	297	210	210	38	30	30
22	192	323	e200	e230	562	461	276	183	207	29	26	29
23	179	280	e180	e200	476	418	256	170	199	29	26	24
24	168	257	e170	e185	443	375	236	159	182	30	36	24
25	164	273	e160	e170	904	333	221	142	159	34	58	23

26	166	521	e150	e160	1890	298	206	133	141	73	48	22
27	164	653	e140	e150	3350	274	195	130	127	47	39	20
28	158	677	e130	e145	2940	258	189	128	115	30	32	20
29	156	629	e125	e230	---	251	179	128	107	297	29	21
30	147	531	e120	978	---	249	168	117	101	169	27	21

31	137	---	e120	1820	---	246	---	114	---	69	42	---

TOTAL	22689	16994	8340	9415	38646	16664	11558	5070	15819	2256	1079	992
MEAN	732	566	269	304	1380	538	385	164	527	72.8	34.8	33.1
MAX	4040	1480	588	1820	3350	2120	1360	261	2200	297	83	73
MIN	137	112	120	100	443	246	168	114	101	29	18	20
CFSM	1.55	1.20	.57	.64	2.92	1.14	.81	.35	1.11	.15	.07	.07
IN.	1.78	1.34	.66	.74	3.04	1.31	.91	.40	1.24	.18	.08	.08

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 2001, BY WATER YEAR (WY)
MEAN	168	320	517	478	639	758	726	759	535	286	180	104
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 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1971 - 2001
ANNUAL TOTAL	131010		149522
ANNUAL MEAN	358		410		455
HIGHEST ANNUAL MEAN					838	1973
LOWEST ANNUAL MEAN					185	1980
HIGHEST DAILY MEAN	4040	Oct 6	4040	Oct 6	9690	Apr 14 1994
LOWEST DAILY MEAN	21 A	Jan 22-26	18	Aug 15,16,17	.00	Sep 11 1988
ANNUAL SEVEN-DAY MINIMUM	21	Jan 21	20	Aug 12	2.7	Sep 8 1988
MAXIMUM PEAK FLOW			4270	Oct 6	9950	Apr 13 1994
MAXIMUM PEAK STAGE			13.34	Oct 6	17.30	Apr 13 1994
INSTANTANEOUS LOW FLOW			16	Aug 17
ANNUAL RUNOFF (CFSM)	.76		.87		.96
ANNUAL RUNOFF (INCHES)	10.30		11.76		13.06
10 PERCENT EXCEEDS	1040		1140		1210
50 PERCENT EXCEEDS	153		199		177
90 PERCENT EXCEEDS	38		30		20

A - Estimated, but may have been less during periods of estimated discharges in Jan. and Feb.