05526000 DATA: Discharge Tables, 2004

Station list Available data
ILLINOIS RIVER BASIN

05526000 IROQUOIS RIVER NEAR CHEBANSE, IL


LOCATION.-- Lat 41°00'32", long 87°49'24" (NAD of 1927), in SE1/4SW1/4 sec.10, T.29 N., R.13 W., Kankakee County, Hydrologic Unit 07120002, on right bank at upstream side of bridge on county highway, 3.1 mi downstream from Beaver Creek, 4.5 mi east of Chebanse, and at mile 6.5.

DRAINAGE AREA.-- 2,091 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: April 1923 to current year.
	STAGE: Water years 1994 to current year.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1978-1991 and 1999 to 2001. Additional chemical data for water years 1959-77 are published in Water-Resources Investigations 78-23 and 79-24 as site FL 02.
	SEDIMENT: October 1978 to September 1981, January 1993 to December 1995.
	MISCELLANEOUS: Water years 1998 and 2002; Contaminants in streambed sediments, August 1998; contaminants in fish tissue, August 1998.
BIOLOGICAL
	BENTHIC MACROINVERTEBRATES: Water year 1999.
	FISH: Water year 1999.
	HABITAT: Water year 1999.

REVISED RECORDS.-- WSP 1308: 1924-28(M), 1930(M), 1936(M), 1938(M), 1942(M), 1947(M). WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, phone telemetry, and crest-stage gage. Datum of gage is 595.99 ft above NGVD of 1929. Prior to June 16,1976, nonrecording gage, and June 17, 1976 to Aug. 13, 1979 water-stage recorder at site 600 ft upstream at datum 2.00 ft higher. Aug. 14 to Oct. 24, 1979, nonrecording gage at present site at datum 2.00 ft higher.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 27,000 ft³/s, May 13, 1933, Mar. 7, 1979; maximum gage height 21.68 ft, Mar. 7, 1979, present datum, ice jam; minimum discharge, 9 ft³/s, Oct. 6-8, 1956.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 1,400 mg/L, Apr. 14, 1979; minimum daily, 4 mg/L, Mar. 3, 1994.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 57,000 tons, June 5, 1980; minimum daily, 3.2 tons, Nov. 16, 1979.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood in spring of 1913 reached a stage of 21.6 ft, present datum, discharge about 34,000 ft³/s.

REMARKS FOR CURRENT YEAR.-- Records fair except those for June 15 to Sept. 27, and those for estimated daily discharges, which are poor.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	727	752	2790	5090	e540	e800	6650	651	8020	931	224	8740
2	560	672	2370	4320	e510	974	6370	698	8390	830	214	7690
3	461	608	2010	3750	e480	1180	5330	682	8190	778	202	5670
4	389	575	1770	3360	e450	1420	4080	662	7250	775	295	3940
5	350	643	1660	3470	e435	2800	3220	630	5600	793	514	3230

6	331	897	1710	4360	e420	5230	2640	618	4090	850	641	2840
7	313	1120	1850	4470	e445	5960	2230	614	3310	795	673	2570
8	288	1270	2090	3740	e470	5380	1970	760	2780	699	600	2340
9	265	1220	2410	2980	e520	4220	1730	776	2260	638	474	2120
10	251	1080	2810	2450	e450	3390	1520	763	1790	650	364	1860

11	241	947	3350	1990	e450	2820	1340	861	3050	1230	291	1550
12	222	860	3540	1760	e500	2370	1200	1020	10800	2960	243	1220
13	207	802	3320	1650	e580	1980	1120	1060	15200	3540	216	955
14	220	929	2960	1560	e540	1680	1070	1310	17400	2980	197	777
15	274	956	2640	1470	e480	1480	994	2540	18100	1960	190	668

16	365	849	2350	1410	e500	1370	919	3480	16100	1270	183	609
17	553	756	2080	1340	e480	1300	866	3170	13400	914	171	594
18	677	1150	1910	1280	e490	1260	849	2500	11500	754	162	585
19	629	3700	1730	1240	e500	1210	771	2060	10800	799	181	540
20	560	5890	1500	e1150	e600	1160	754	2170	10000	894	234	501

21	475	6640	1290	e1100	e900	1110	843	2230	8430	761	278	464
22	429	6470	1240	e1000	e1200	1050	898	1960	5900	596	440	429
23	400	5330	1310	e975	e1300	1000	881	1720	3630	469	653	408
24	383	5170	2270	e840	e1200	960	840	1990	2490	400	730	383
25	407	5770	3920	e900	e1000	958	838	2300	1940	347	940	361

26	558	5930	3980	e700	e950	1310	836	2740	1640	314	3370	346
27	744	5420	3300	e640	e850	3210	806	2870	1440	293	6010	325
28	928	4510	2810	e700	e780	5270	783	2630	1280	265	7030	300
29	992	3770	2640	e600	e740	6310	698	2040	1150	239	7340	305
30	967	3240	3840	e560	---	6360	650	1890	1040	232	8130	293

31	858	---	5080	e580	---	6290	---	5470	---	226	8820	---

TOTAL	15024	77926	78530	61435	18760	81812	53696	54865	206970	29182	50010	52613
MEAN	485	2598	2533	1982	647	2639	1790	1770	6899	941	1613	1754
MAX	992	6640	5080	5090	1300	6360	6650	5470	18100	3540	8820	8740
MIN	207	575	1240	560	420	800	650	614	1040	226	162	293
CFSM	0.23	1.24	1.21	0.95	0.31	1.26	0.86	0.85	3.30	0.45	0.77	0.84
IN.	0.27	1.39	1.40	1.09	0.33	1.46	0.96	0.98	3.68	0.52	0.89	0.94

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1923 - 2004, BY WATER YEAR (WY)
MEAN	733	965	1518	1861	2524	3103	3182	2710	2085	1325	485	571
MAX	8019	5850	8203	9079	7425	11210	8396	10910	7934	8361	2497	7372
(WY)	1994	1986	1928	1950	1982	1982	1950	1943	1958	2003	1977	1993
MIN	25.5	37.2	40.7	26.1	82.3	200	574	169	94.6	33.0	33.7	26.3
(WY)	1957	1965	1964	1945	1931	1931	1931	1934	1934	1934	1988	1941

SUMMARY STATISTICS	FOR 2003 CALENDAR YEAR		FOR 2004 WATER YEAR		WATER YEARS 1923 - 2004
ANNUAL TOTAL	715979		780823
ANNUAL MEAN	1962		2133		1754
HIGHEST ANNUAL MEAN					4477	1993
LOWEST ANNUAL MEAN					365	1931
HIGHEST DAILY MEAN	16800	Jul 13	18100	Jun 15	27000	Mar 7 1979
LOWEST DAILY MEAN	190	A	162	Aug 18	10	Oct 6 1956
ANNUAL SEVEN-DAY MINIMUM	199	Sep 19	186	Aug 13	14	Aug 2 1934
MAXIMUM PEAK FLOW			18400	Jun 15	27000	B
MAXIMUM PEAK STAGE			15.35	Jun 15	21.68 C	Mar 7 1979
INSTANTANEOUS LOW FLOW			157	Aug 18	9.0	D
ANNUAL RUNOFF (CFSM)	0.938		1.02		0.839
ANNUAL RUNOFF (INCHES)	12.74		13.89		11.40
10 PERCENT EXCEEDS	5130		5440		4780
50 PERCENT EXCEEDS	849		1060		740
90 PERCENT EXCEEDS	266		347		81

	A - Jan 27 and 28, estimated due to backwater from ice; and Sept. 23.
	B - May 13, 1933; March 7, 1979.
	C - Present datum, ice jam.
	D - Oct. 6-8, 1956.