05526000 DATA: Discharge Tables, 1999

Station list Available data
ILLINOIS RIVER BASIN

05526000 IROQUOIS RIVER NEAR CHEBANSE, IL

LOCATION.--Lat 41°00'32", long 87°49'27", 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.--April 1923 to current year.

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 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.

REMARKS.--Records good except those for estimated daily discharges, which are poor. Gage-height telemeter at station.

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

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	82	109	127	e128	4600	3730	1060	4130	877	1390	128	70
2	81	111	137	e130	4150	3650	1060	3720	1410	2080	123	66
3	82	113	134	e120	3890	3830	1040	3340	2260	2070	111	63
4	84	123	134	e108	3480	4470	1030	2960	2750	1810	98	59
5	88	121	142	e94	2980	4570	1010	2590	2440	1450	91	57

6	97	120	147	e98	2500	4560	1050	2300	2080	1120	84	51
7	101	119	151	e103	2250	4790	1060	2230	1920	882	83	54
8	103	118	171	e108	2670	4690	1010	2070	1650	694	85	50
9	108	116	169	e105	4300	4200	1010	1930	1600	555	101	47
10	121	153	163	e102	5000	3710	1020	1680	1510	450	98	45

11	133	132	169	e100	4720	3210	1030	1480	1690	393	89	43
12	130	130	170	e98	4220	2770	1180	1390	2850	337	100	42
13	117	143	163	e97	3780	2430	1570	1610	5190	294	358	41
14	103	197	163	e97	3350	2210	1450	2170	5730	258	497	40
15	97	215	158	e97	2820	2110	1370	2950	4470	229	399	37

16	97	211	148	e102	2400	2290	4030	3010	3260	204	309	37
17	100	185	144	e120	2160	3360	10500	2570	2410	186	227	41
18	91	176	160	e150	1990	3980	12100	2100	1850	179	171	41
19	86	163	137	e200	1850	3680	12500	1760	1470	178	135	41
20	85	149	142	e280	1700	3140	11500	1540	1230	185	121	36

21	84	145	146	e500	1540	2730	9510	1380	1060	367	108	36
22	89	151	e144	e1000	1400	2390	7440	1300	942	395	96	42
23	90	128	e138	e3000	1280	2070	6860	1310	858	353	87	46
24	90	121	e129	e8000	1200	1810	5940	1330	852	484	84	38
25	86	124	e120	e12000	1140	1610	4840	1320	930	443	84	43

26	82	121	e112	e13500	1100	1460	4130	1280	1140	314	92	43
27	87	120	e108	e13400	1510	1330	3640	1180	1190	244	98	34
28	96	122	e108	12400	3040	1250	3410	1060	1110	211	97	38
29	103	130	e112	9840	---	1180	3990	960	1130	182	80	51
30	105	127	e118	7430	---	1130	4430	888	1080	166	81	66

31	102	---	e122	5610	---	1090	---	852	---	149	75	---

TOTAL	3000	4193	4386	89117	77020	89430	121770	60390	58939	18252	4390	1398
MEAN	96.8	140	141	2875	2751	2885	4059	1948	1965	589	142	46.6
MAX	133	215	171	13500	5000	4790	12500	4130	5730	2080	497	70
MIN	81	109	108	94	1100	1090	1010	852	852	149	75	34
CFSM	.05	.07	.07	1.37	1.32	1.38	1.94	.93	.94	.28	.07	.02
IN.	.05	.07	.08	1.59	1.37	1.59	2.17	1.07	1.05	.32	.08	.02

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1923 - 1999, BY WATER YEAR (WY)
MEAN	701	964	1541	1934	2520	3163	3248	2701	2013	1235	461	569
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 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1923 - 1999
ANNUAL TOTAL	1046747		532285
ANNUAL MEAN	2868		1458		1753
HIGHEST ANNUAL MEAN					4477	1993
LOWEST ANNUAL MEAN					365	1931
HIGHEST DAILY MEAN	19600	May 10	13500 A	Jan 26	27000	Mar 7 1979
LOWEST DAILY MEAN	77	Sep 29	34	Sep 27	10	Oct 6 1956
ANNUAL SEVEN-DAY MINIMUM	80	Sep 27	38	Sep 15	14	Aug 2 1934
INSTANTANEOUS PEAK FLOW			14000 A	Jan 27	27000	B
INSTANTANEOUS PEAK STAGE			14.23 C	Jan 27	21.68 D	Mar 7 1979
INSTANTANEOUS LOW FLOW			29	Sep 16	9.0	E
ANNUAL RUNOFF (CFSM)	1.37		.70		.84
ANNUAL RUNOFF (INCHES)	18.62		9.47		11.39
10 PERCENT EXCEEDS	8480		4010		4780
50 PERCENT EXCEEDS	1260		309		735
90 PERCENT EXCEEDS	101		82		79

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