05591200 DATA: Discharge Tables, 2000

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 1994-2000.

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.--
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 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	45	19	21	40	e27	176	97	127	1630	602	72	213
2	29	22	18	40	e28	153	92	117	1290	416	61	133
3	16	25	e18	43	e29	133	90	118	972	311	121	94
4	15	29	e18	51	e30	112	88	119	699	250	207	71
5	16	35	e19	64	e30	104	79	108	496	654	134	57

6	30	34	e30	73	e30	99	73	106	399	1760	98	47
7	29	34	e49	59	e31	91	70	97	422	2300	102	42
8	28	33	47	59	e32	80	77	91	432	1890	94	41
9	29	32	37	56	e34	79	76	92	371	1330	69	38
10	43	31	32	49	37	78	69	96	302	925	54	140

11	57	31	29	48	45	76	62	109	258	658	45	638
12	51	30	31	46	72	69	56	117	246	1040	38	775
13	39	32	30	47	102	65	69	108	280	1810	34	612
14	30	30	30	43	94	77	64	126	471	1770	31	377
15	26	25	34	39	84	86	57	200	644	1320	28	233

16	25	22	49	31	77	86	59	189	675	937	25	158
17	26	20	58	33	65	80	67	154	620	602	22	121
18	25	24	56	38	91	69	99	134	503	356	22	99
19	26	27	51	e28	182	65	190	122	352	234	22	87
20	25	27	e45	e25	360	116	183	126	262	181	24	77

21	23	23	e37	e22	467	253	158	162	612	143	23	71
22	23	20	e31	e21	418	376	151	155	1050	118	26	66
23	22	19	e26	e21	305	373	146	135	1470	102	53	64
24	21	19	e24	e21	232	294	140	145	1590	87	88	140
25	21	24	28	e21	186	234	147	137	2350	73	126	619

26	22	34	26	e21	164	203	201	105	2380	60	85	1290
27	21	32	23	e22	177	180	224	96	1940	55	869	1410
28	20	27	22	e23	201	165	201	222	1490	51	1250	1290
29	19	24	27	e24	204	153	171	510	1140	50	1070	1060
30	19	23	30	e25	---	131	147	1060	860	46	781	805

31	20	---	36	e26	---	108	---	1690	---	52	423	---

TOTAL	841	807	1012	1159	3834	4364	3403	6873	26206	20183	6097	10868
MEAN	27.1	26.9	32.6	37.4	132	141	113	222	874	651	197	362
MAX	57	35	58	73	467	376	224	1690	2380	2300	1250	1410
MIN	15	19	18	21	27	65	56	91	246	46	22	38
CFSM	.06	.06	.07	.08	.28	.30	.24	.47	1.85	1.38	.42	.77
IN.	.07	.06	.08	.09	.30	.34	.27	.54	2.06	1.59	.48	.85

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 2000, BY WATER YEAR (WY)
MEAN	149	311	525	484	615	766	737	778	536	293	185	106
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 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1971 - 2000
ANNUAL TOTAL	136363.4		85647
ANNUAL MEAN	374		234		456
HIGHEST ANNUAL MEAN					838	1973
LOWEST ANNUAL MEAN					185	1980
HIGHEST DAILY MEAN	4000 A	Jan 25	2380	Jun 26	9690	Apr 14 1994
LOWEST DAILY MEAN	4.8	Sep 21	15	Oct 4	.00	Sep 11 1988
ANNUAL SEVEN-DAY MINIMUM	6.1	Sep 17	20	Oct 26	2.7	Sep 8 1988
INSTANTANEOUS PEAK FLOW			2580	Jun 25	9950	Apr 13 1994
INSTANTANEOUS PEAK STAGE			11.47	Jun 25	17.30	Apr 13 1994
INSTANTANEOUS LOW FLOW			14	Oct 4
ANNUAL RUNOFF (CFSM)	.79		.49		.96
ANNUAL RUNOFF (INCHES)	10.72		6.74		13.11
10 PERCENT EXCEEDS	1170		663		1230
50 PERCENT EXCEEDS	58		74		176
90 PERCENT EXCEEDS	13		23		20

A - Estimated.