05555300 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05555300 VERMILION RIVER NEAR LEONORE, IL

LOCATION.-- Lat 41°12'30", long 88°55'51", in SW1/4SW1/4 sec.30, T.32 N., R.3 E., La Salle County, Hydrologic Unit 07130002, on left downstream side of bridge on County Highway 57 (Red, White and Blue Bridge Road), 3 mi northeast of Leonore, 6.2 mi downstream from Otter Creek, 8 mi northwest of Streator, and at mile 17.2.

DRAINAGE AREA.-- 1,251 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: May 1931 to current year. Prior to October 1971, published as "at Lowell."

STAGE: Water years 1994-2001.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978 to 1991.

SEDIMENT: June 1980 to September 1981.

MISCELLANEOUS: Contaminants in streambed sediments, July 1996; contaminants in fish tissue, July 1996.

REVISED RECORDS.-- WSP 745: 1931-32. WSP 1308: 1932(M), 1935-38(M), 1940(M), 1942(M). WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and crest-stage gage. Datum of gage is 520.58 ft above sea level. Prior to Aug. 20, 1952, nonrecording gage at site 6.8 mi downstream at datum 19.97 ft lower. Aug. 20, 1952 to Sept. 30, 1971, nonrecording gage at site 6.7 mi downstream at datum 19.97 ft lower.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 33,500 ft³/s, July 15, 1958, gage height, 15.30 ft, from graph based on gage readings, site and datum then in use; maximum gage height, 27.13 ft, Dec. 4, 1982, present site and datum (discharge 31,800 ft³/s); minimum discharge, 2.6 ft³/s, Aug. 3, 1988.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 6,730 mg/L Aug. 15, 1981; minimum daily mean, 1 mg/L Feb. 5, 1981.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 209,000 tons Aug. 15, 1981; minimum daily, 0.24 ton Feb. 5, 1981.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	16	16	127	e47	e3000	3040	623	601	1480	304	77	45
2	17	18	129	e49	e2800	2380	588	589	1990	276	89	34
3	17	21	129	e52	e1900	1950	552	559	1680	1660	85	30
4	59	18	119	e54	e1600	1680	517	522	1290	2620	84	28
5	55	17	e115	e57	e1350	1480	504	495	5830	2000	68	21

6	49	18	115	e61	e1250	1270	540	484	16600	1290	60	19
7	35	41	111	e63	e1500	1130	833	475	14600	842	54	21
8	36	66	e102	e64	3510	1030	1220	452	10600	685	49	19
9	38	138	e96	e63	11500	934	1090	430	7580	795	45	25
10	40	556	e92	e60	15700	853	960	415	4930	1140	41	27

11	35	621	88	e57	9700	787	1720	473	3470	930	35	24
12	28	486	e100	e56	5570	768	2630	511	2660	659	31	26
13	23	361	e104	e58	3820	830	2470	500	2130	484	28	21
14	19	299	e102	e69	3440	841	1840	469	1750	385	26	18
15	19	268	e96	e76	4110	858	1500	469	1480	320	26	15

16	17	245	e92	e87	3780	1240	1280	462	1260	277	29	14
17	15	206	e85	e98	3010	1980	1080	457	1080	243	25	13
18	13	170	e78	e110	2310	2720	934	564	941	222	98	16
19	12	154	e74	e125	1900	2580	830	936	837	210	119	115
20	10	137	e68	e130	1620	2170	791	874	748	191	52	113

21	13	114	e64	e127	1320	1800	763	753	724	170	47	125
22	14	96	e59	e118	1120	1510	781	657	703	156	45	116
23	15	101	e56	e112	995	1290	1540	579	656	230	64	100
24	17	100	e52	e108	1620	1130	1710	530	579	183	64	95
25	18	96	e47	e105	8220	987	1370	492	506	165	69	87

26	16	114	e44	e102	9100	873	1070	509	448	136	80	69
27	16	116	e41	e101	6510	784	895	686	404	116	79	57
28	15	110	e41	e100	4200	738	774	1140	378	107	64	46
29	14	112	e41	267	---	701	667	1130	355	97	50	38
30	13	117	e43	e900	---	674	617	880	329	90	41	35

31	14	---	e45	e3100	---	651	---	811	---	83	48	---

TOTAL	718	4932	2555	6576	116455	41659	32689	18904	88018	17066	1772	1412
MEAN	23.2	164	82.4	212	4159	1344	1090	610	2934	551	57.2	47.1
MAX	59	621	129	3100	15700	3040	2630	1140	16600	2620	119	125
MIN	10	16	41	47	995	651	504	415	329	83	25	13
CFSM	.02	.13	.07	.17	3.32	1.07	.87	.49	2.35	.44	.05	.04
IN.	.02	.15	.08	.20	3.46	1.24	.97	.56	2.62	.51	.05	.04

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1972 - 2001, BY WATER YEAR (WY)
MEAN	427	724	992	904	1346	2054	1862	1585	1411	716	333	404
MAX	3188	4978	6201	4259	4159	7649	5098	5152	4442	2966	2678	3997
(WY)	1987	1986	1983	1993	2001	1979	1982	1995	1980	1993	1981	1993
MIN	11.4	11.4	11.4	6.36	40.9	49.1	208	241	78.5	8.83	6.89	11.8
(WY)	1972	1972	1977	1977	1977	2000	1977	1992	1988	1988	1988	1999

SUMMARY STATISTICS	FOR 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1972 - 2001
ANNUAL TOTAL	104633		332756
ANNUAL MEAN	286		912		1061
HIGHEST ANNUAL MEAN					2419	1993
LOWEST ANNUAL MEAN					267	2000
HIGHEST DAILY MEAN	4690	Jun 25	16600	Jun 6	30000	Dec 4 1982
LOWEST DAILY MEAN	10	A	10	Oct 20	2.6	Aug 3 1988
ANNUAL SEVEN-DAY MINIMUM	11	Jan 24	13	Oct 17	3.0	Jul 30 1988
MAXIMUM PEAK FLOW			18200	Jun 6	31800	Dec 4 1982
MAXIMUM PEAK STAGE			21.17	Jun 6	27.13	Dec 4 1982
INSTANTANEOUS LOW FLOW			9.0	Oct 20	2.6	Aug 3 1988
ANNUAL RUNOFF (CFSM)	.23		.73		.85
ANNUAL RUNOFF (INCHES)	3.11		9.89		11.52
10 PERCENT EXCEEDS	747		1990		2630
50 PERCENT EXCEEDS	60		183		392
90 PERCENT EXCEEDS	15		21		25

A - Jan. 26-28 (estimated due to backwater from ice) and Oct. 20.