05591200 DATA: Discharge Tables, 2003

Station list Available data
KASKASKIA RIVER BASIN

05591200 KASKASKIA RIVER AT COOKS MILLS, IL


LOCATION.-- Lat 39°35'00", long 88°24'48" (NAD of 1927), 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: August 1970 to current year.
	STAGE: Water years 1994 to current year.
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.
	MISCELLANEOUS: Sediment concentration and particle size, water years 1993-97.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 617.40 ft above NGVD of 1929. Prior to July 30, 1981, at site 200 ft downstream at same datum.

REMARKS.-- Occasional golf-course irrigation water withdrawals approximately 15.5 miles upstream from the gage.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 11,000 ft³/s, May 13, 2002, gage height, 17.85 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 fair except those for estimated daily discharges, which are poor.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	12	39	17	41	e10	e50	58	43	154	108	47	695
2	12	32	16	60	e11	e52	51	40	166	139	41	919
3	9.7	26	15	48	e11	e49	53	46	168	131	38	804
4	9.1	23	14	35	e12	47	56	46	159	112	37	735
5	10	22	17	27	e14	47	61	130	150	98	60	512

6	14	22	17	25	e19	48	80	286	136	84	47	246
7	25	24	15	28	e24	66	73	396	123	73	37	142
8	21	34	15	24	e26	73	63	463	120	70	33	102
9	16	36	14	22	e24	62	74	509	120	67	30	79
10	15	34	14	21	25	71	73	679	112	373	29	65

11	13	29	13	25	26	68	64	1440	105	737	28	54
12	12	27	14	19	27	60	60	2020	105	1280	26	46
13	11	25	14	16	26	70	58	1760	252	1700	25	42
14	10	22	14	e15	25	120	55	1280	643	1400	23	37
15	10	19	15	e14	e28	262	51	920	800	967	22	34

16	14	16	15	e14	e35	259	48	702	819	602	21	33
17	13	13	14	e13	e34	214	47	656	716	309	23	32
18	10	13	13	e12	e32	176	47	634	544	205	20	29
19	9.9	15	16	e12	e31	150	52	542	392	171	19	26
20	13	16	33	e11	e34	137	53	461	326	180	18	25

21	35	17	53	e10	e47	140	49	401	277	182	17	25
22	36	18	39	e10	e70	134	49	384	226	181	17	26
23	24	18	27	e10	e100	118	50	346	195	231	16	25
24	20	20	22	e9.9	e170	102	46	294	174	187	17	26
25	19	21	21	e9.8	e130	90	45	258	152	133	17	29

26	18	17	18	e9.8	e100	86	48	231	141	101	16	27
27	24	16	17	e9.9	e74	81	60	207	131	81	16	52
28	32	16	17	e10	e60	75	58	187	122	69	15	75
29	28	18	19	e10	---	72	50	175	112	61	17	99
30	25	18	19	e10	---	72	47	168	101	57	18	77

31	28	---	25	e10	---	71	---	160	---	54	29	---

TOTAL	548.7	666	592	591.4	1225	3122	1679	15864	7741	10143	819	5118
MEAN	17.7	22.2	19.1	19.1	43.8	101	56.0	512	258	327	26.4	171
MAX	36	39	53	60	170	262	80	2020	819	1700	60	919
MIN	9.1	13	13	9.8	10	47	45	40	101	54	15	25
CFSM	0.04	0.05	0.04	0.04	0.09	0.21	0.12	1.08	0.55	0.69	0.06	0.36
IN.	0.04	0.05	0.05	0.05	0.10	0.25	0.13	1.25	0.61	0.80	0.06	0.40

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 2003, BY WATER YEAR (WY)
MEAN	174	306	508	454	635	742	727	815	531	281	171	103
MAX	1189	2205	1626	1862	2028	2565	2116	2881	1864	1166	952	817
(WY)	1994	1993	1988	1974	1982	1979	1994	2002	1974	1973	1981	1993
MIN	12.7	22.2	16.7	14.2	43.8	101	56.0	103	48.0	16.8	14.9	10.4
(WY)	1985	2003	1977	1977	2003	2003	2003	1976	1988	1988	1988	1999

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR		FOR 2003 WATER YEAR		WATER YEARS 1971 - 2003
ANNUAL TOTAL	220444.7		48109.1
ANNUAL MEAN	604		132		453
HIGHEST ANNUAL MEAN					838	1973
LOWEST ANNUAL MEAN					132	2003
HIGHEST DAILY MEAN	10700	May 13	2020	May 12	10700	May 13 2002
LOWEST DAILY MEAN	9.1	Oct 4	9.1	Oct 4	0.00	Sep 11 1988
ANNUAL SEVEN-DAY MINIMUM	11	Sep 29	9.9 A	Jan 21	2.7	Sep 8 1988
MAXIMUM PEAK FLOW			2060	May 12	11000	May 13 2002
MAXIMUM PEAK STAGE			10.71	May 12	17.85	May 13 2002
INSTANTANEOUS LOW FLOW			7.8	Oct 19
ANNUAL RUNOFF (CFSM)	1.28		0.28		0.96
ANNUAL RUNOFF (INCHES)	17.34		3.78		13.01
10 PERCENT EXCEEDS	1670		316		1210
50 PERCENT EXCEEDS	112		42		171
90 PERCENT EXCEEDS	14		13		19

	A - Estimated due to backwater from ice.