05526000 DATA: Discharge Tables, 2000

Station list Available data
ILLINOIS RIVER BASIN

05526000 IROQUOIS RIVER NEAR CHEBANSE, IL

LOCATION.-- Lat 41°00'32", long 87°49'24", 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 1994-1998;2000.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-1991 and 1999-2000. 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: June and July 1998; Contaminants in streambed sediments, August 1998; contaminants in fish tissue, August 1998.

BIOLOGICAL: Benthic macroinvertebrates, July 1999; fish, August, 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 sea level. 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 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	64	54	81	e153	e113	1070	443	1080	2480	1310	610	61
2	63	55	73	e156	e117	955	411	1260	2440	1090	575	55
3	69	63	75	161	e119	839	393	1490	2080	1750	489	52
4	88	67	70	169	e121	721	381	1620	1760	4450	524	40
5	104	64	78	156	e125	618	385	1540	1520	5650	582	48

6	93	57	122	e170	e127	553	348	1390	1370	7380	467	51
7	89	63	156	e178	e132	494	353	1230	1210	7670	380	50
8	89	64	153	e180	e138	469	538	1130	1120	6440	326	48
9	86	67	162	178	e145	415	631	1060	1030	4240	294	50
10	86	65	166	174	e153	386	618	1120	935	5220	275	54

11	81	56	169	163	e166	364	611	1690	835	8830	261	55
12	81	68	158	159	e185	367	572	2140	776	8860	248	69
13	72	68	146	162	e208	341	516	2170	939	6830	221	83
14	73	61	143	e156	e240	316	481	1840	1260	5010	195	90
15	72	65	169	e149	e255	311	443	1490	1630	3830	171	98

16	65	64	188	e140	e265	300	419	1260	1870	2900	143	113
17	58	72	201	e159	e272	367	510	1130	1810	2110	131	113
18	61	79	216	e151	e310	356	677	1070	1570	1510	120	105
19	59	70	219	e140	e450	347	759	1200	1270	1180	114	98
20	59	60	215	e127	e560	498	1300	1530	1070	991	106	81

21	63	63	e205	e120	e760	769	3360	1780	2040	861	103	77
22	57	68	e195	e110	e1000	944	4320	1640	3410	750	104	74
23	58	76	e185	e105	e1180	1060	4050	1380	3620	644	99	73
24	63	70	e175	e98	1250	1000	3390	1190	3320	553	90	75
25	66	73	e167	e95	1240	882	2800	1030	3070	476	86	86

26	58	81	e161	e93	1120	786	2310	901	3120	418	79	96
27	57	78	e159	e94	974	704	1870	850	2900	369	73	92
28	61	75	e155	e96	903	645	1550	1000	2490	321	74	89
29	62	71	e152	e100	1030	592	1310	1880	2050	299	70	90
30	62	74	e151	e104	---	539	1170	2320	1650	330	71	84

31	52	---	e152	e109	---	492	---	2190	---	465	67	---

TOTAL	2171	2011	4817	4305	13658	18500	36919	44601	56645	92737	7148	2250
MEAN	70.0	67.0	155	139	471	597	1231	1439	1888	2992	231	75.0
MAX	104	81	219	180	1250	1070	4320	2320	3620	8860	610	113
MIN	52	54	70	93	113	300	348	850	776	299	67	40
CFSM	.03	.03	.07	.07	.23	.29	.59	.69	.90	1.43	.11	.04
IN.	.04	.04	.09	.08	.24	.33	.66	.79	1.01	1.65	.13	.04

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1923 - 2000, BY WATER YEAR (WY)
MEAN	693	952	1523	1911	2493	3129	3221	2685	2012	1258	458	563
MAX	8019	5850	8203	9079	7425	11210	8396	10910	7934	7004	2497	7372
(WY)	1994	1986	1928	1950	1982	1982	1950	1943	1958	1993	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 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1923 - 2000
ANNUAL TOTAL	529705		285762
ANNUAL MEAN	1451		781		1740
HIGHEST ANNUAL MEAN					4477	1993
LOWEST ANNUAL MEAN					365	1931
HIGHEST DAILY MEAN	13500	A	8860	Jul 12	27000	Mar 7 1979
LOWEST DAILY MEAN	34	Sep 27	40	Sep 4	10	Oct 6 1956
ANNUAL SEVEN-DAY MINIMUM	38	Sep 15	48	Sep 3	14	Aug 2 1934
INSTANTANEOUS PEAK FLOW			9480	Jul 11	27000	B
INSTANTANEOUS PEAK STAGE			11.22	Jul 11	21.68 C	Mar 7 1979
INSTANTANEOUS LOW FLOW			31	Sep 4	9.0	D
ANNUAL RUNOFF (CFSM)	.69		.37		.83
ANNUAL RUNOFF (INCHES)	9.42		5.08		11.31
10 PERCENT EXCEEDS	4010		1930		4740
50 PERCENT EXCEEDS	309		218		732
90 PERCENT EXCEEDS	59		64		79

A - Estimated due to backwater from ice.
B - May 13, 1933, Mar. 7, 1979.
C - Present datum, ice jam.
D - Oct. 6-8, 1956.