05556500 DATA: Discharge Tables, 2004

Station list Available data
ILLINOIS RIVER BASIN


LOCATION.-- Lat 41°21'57", long 89°29'54" (NAD of 1927), in SW1/4SE1/4 sec.18, T.16 N., R.9 E., Bureau County, Hydrologic Unit 07130001, on right bank 500 ft downstream from bridge on U.S. Highways 6 and 34, 0.6 mi downstream from Epperson Run, 1.5 mi west of Princeton, and at mile 20.5.

DRAINAGE AREA.-- 196 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: March 1936 to current year. Prior to October 1974, published as Bureau Creek at Princeton.
	STAGE: Water years 1994 to current year.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1978-91.
BIOLOGICAL
	BENTHIC MACROINVERTEBRATES: Water year 1997.

REVISED RECORDS.-- WSP 1175: 1940-41, 1948. WSP 1308: 1942(M). WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder and U.S. Army Corps of Engineers satellite telemeter. Datum of gage is 555.39 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers). Prior to July 18, 1940, nonrecording gage at bridge 425 ft upstream at datum 30.00 ft lower. July 18, 1940, to Sept. 18, 1944, water-stage recorder at site 500 ft upstream at present datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 12,500 ft³/s, from rating curve extended above 11,800 ft³/s, May 17, 1974, gage height, 16.01 ft; no flow during January 1940 and for several days in October and November 1953.

REMARKS FOR CURRENT YEAR.-- Records good except 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	4.1	4.8	7.4	38	e18	76	317	118	1100	76	14	11
2	4.2	12	7.1	37	e17	80	277	113	732	70	13	9.4
3	5.0	37	7.2	38	e18	75	242	109	526	67	22	8.6
4	5.5	28	7.2	40	e18	81	213	105	386	64	48	8.1
5	5.1	22	10	34	e17	260	189	104	321	68	24	8.1

6	5.5	11	8.8	39	e17	489	176	103	279	88	20	7.1
7	5.3	9.2	7.8	46	e16	302	168	106	243	99	16	6.8
8	5.4	7.7	7.7	42	e16	229	155	98	212	85	14	6.4
9	5.3	7.0	18	37	e15	191	142	96	189	75	12	6.0
10	5.3	6.6	271	35	e15	162	129	106	250	85	11	5.9

11	5.2	6.5	609	34	e14	147	124	149	716	64	9.4	5.7
12	5.4	6.4	344	37	e14	123	118	133	417	56	9.2	5.4
13	5.4	5.7	207	36	e13	126	114	260	316	50	8.6	5.3
14	13	6.0	170	33	e13	116	112	587	298	70	8.1	5.1
15	5.0	6.0	136	35	e12	111	108	913	333	68	7.6	19

16	7.3	6.4	114	32	e12	108	105	591	278	49	7.4	13
17	5.0	6.3	94	34	e12	108	103	420	228	42	7.8	7.4
18	4.6	29	88	43	e13	112	99	433	195	37	8.6	6.2
19	4.6	11	73	56	e16	115	95	375	169	34	10	5.6
20	4.9	10	65	35	e19	121	101	318	153	35	9.1	5.5

21	5.1	11	75	27	e50	120	120	281	149	64	8.7	5.4
22	5.1	16	65	32	e150	109	125	432	143	48	8.0	4.9
23	5.6	14	57	27	e130	107	120	536	126	36	7.4	4.8
24	5.1	11	44	25	e140	124	115	358	115	29	8.4	4.7
25	8.5	10	48	23	e115	159	126	320	108	26	12	4.6

26	5.1	9.5	48	23	e100	235	128	276	100	23	20	4.6
27	4.7	8.8	43	23	89	334	125	244	94	21	16	4.7
28	4.6	8.0	48	23	81	327	123	215	90	19	18	4.6
29	4.8	7.8	46	e22	77	348	121	186	86	17	14	4.7
30	5.1	7.8	45	e21	---	383	117	689	81	16	11	4.7

31	4.9	---	41	e19	---	341	---	2200	---	15	12	---

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1936 - 2004, BY WATER YEAR (WY)
MEAN	61.7	83.9	92.3	125	188	256	244	234	213	98.6	54.8	53.1
MAX	523	556	572	626	851	1439	832	915	716	624	356	567
(WY)	1942	1993	1983	1969	1949	1979	1973	1995	1972	1982	1972	1970
MIN	0.92	0.37	1.79	0.00	3.67	8.77	9.73	9.94	10.2	0.63	2.29	1.93
(WY)	1954	1954	1977	1940	2003	2003	2003	1989	1977	1936	1944	1943

SUMMARY STATISTICS	FOR 2003 CALENDAR YEAR		FOR 2004 WATER YEAR		WATER YEARS 1936 - 2004
ANNUAL TOTAL	17967.8		37235.0
ANNUAL MEAN	49.2		102		142
HIGHEST ANNUAL MEAN					365	1993
LOWEST ANNUAL MEAN					14.6	1977
HIGHEST DAILY MEAN	2930	May 11	2200	May 31	8730	Jun 24 1994
LOWEST DAILY MEAN	2.9 A	Jan 27-29	4.1	Oct 1	0.00	B
ANNUAL SEVEN-DAY MINIMUM	3.0	Jan 25	4.7	Sep 24	0.00	Jan 1 1940
MAXIMUM PEAK FLOW			2670	May 31	12500 C	May 17 1974
MAXIMUM PEAK STAGE			7.39	May 31	16.01	May 17 1974
INSTANTANEOUS LOW FLOW			3.6	Oct 2
ANNUAL RUNOFF (CFSM)	0.251		0.519		0.725
ANNUAL RUNOFF (INCHES)	3.41		7.07		9.85
10 PERCENT EXCEEDS	91		277		335
50 PERCENT EXCEEDS	7.2		37		55
90 PERCENT EXCEEDS	3.7		5.4		3.3

	A - Estimated due to backwater from ice.
	B - Month of January 1940 and several days in October and November 1953.
	C - From rating curve extended above 11,800 ft³/s.