05567500 DATA: Discharge Tables, 2003

Station list Available data
ILLINOIS RIVER BASIN

05567500 MACKINAW RIVER NEAR CONGERVILLE, IL


LOCATION.-- Lat 40°37'25", long 89°14'30" (NAD of 1927), in NE1/4SW1/4 sec.17, T.25 N., R.1 W., Woodford County, Hydrologic Unit 07130004, on right bank at downstream side of bridge on U.S. Highway 150, 0.2 mi downstream from Walnut Creek, 2 mi northwest of Congerville, and at mile 58.7.

DRAINAGE AREA.-- 767 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1944 to current year.
	STAGE: Water years 1994 to current year.
SURFACE-WATER QUALITY
	SEDIMENT: June 1983 to September 1983.
	BIOLOGICAL: Benthic macroinvertebrates, Water year 1997.

REVISED RECORDS.-- WSP 1175: 1948. WSP 1308: 1945(M). WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 607.01 ft above NGVD of 1929. Prior to July 11, 1945, nonrecording gage at same site and datum.

REMARKS.-- The City of Bloomington occasionally pumps water upstream from station into Lake Evergreen for municipal supply. The City of Bloomington also withdraws water from Lake Bloomington, which is on Money Creek, a tributary to the Mackinaw River. Water withdrawals are diverted via effluent to Sugar Creek basin.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 44,800 ft³/s, Dec. 4, 1982, gage height, 20.21 ft, from floodmark; minimum, 0.2 ft³/s, Oct. 21-24, Oct. 27 to Nov. 3, 1956, Oct. 6, 1957, Oct. 8-10, 1963.

REMARKS FOR CURRENT YEAR.-- Records good except those for March 9 to August 16, which are fair, and those for estimated daily discharges, which are poor.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	23	30	26	40	30	18	122	202	312	292	144	116
2	22	31	27	58	31	18	122	231	262	235	134	140
3	22	32	25	46	32	17	120	219	274	197	135	206
4	24	29	26	36	31	16	181	205	260	171	121	133
5	25	29	26	43	29	15	573	479	234	147	141	86

6	24	31	25	45	29	16	650	870	221	143	125	62
7	25	31	26	38	25	19	635	704	248	208	110	49
8	26	32	25	40	21	49	1050	585	236	274	94	41
9	26	34	23	38	20	e160	982	1550	217	1090	82	35
10	23	37	24	34	19	e180	766	1590	202	7550	74	31

11	23	33	24	30	19	148	624	3990	212	6950	69	28
12	23	32	24	32	19	124	539	2990	200	5360	65	27
13	23	32	25	31	18	209	450	1570	510	2540	62	26
14	22	32	26	30	18	e135	384	1180	948	1540	59	25
15	22	31	27	28	19	e100	349	1430	1010	1140	56	27

16	22	29	28	29	21	82	327	1300	730	867	53	25
17	22	28	28	27	22	74	319	1010	554	688	50	23
18	23	29	35	27	22	69	297	828	457	578	47	22
19	26	30	39	27	21	69	261	729	475	618	44	20
20	26	31	47	26	22	107	251	644	446	711	41	18

21	26	30	50	26	26	199	243	658	355	615	40	18
22	27	31	48	26	28	311	227	653	311	529	37	19
23	28	30	41	26	28	291	205	564	278	445	35	19
24	25	29	35	24	27	217	190	512	244	370	34	18
25	26	29	33	22	23	184	201	468	214	319	33	18

26	25	29	35	25	20	165	211	421	218	267	32	18
27	25	28	37	22	18	148	190	379	188	228	31	19
28	25	28	34	22	18	144	174	357	186	206	30	19
29	27	28	33	23	---	150	171	387	268	195	32	18
30	30	27	34	24	---	141	176	348	301	173	33	18

31	30	---	36	26	---	127	---	334	---	152	37	---

TOTAL	766	912	972	971	656	3702	10990	27387	10571	34798	2080	1324
MEAN	24.7	30.4	31.4	31.3	23.4	119	366	883	352	1123	67.1	44.1
MAX	30	37	50	58	32	311	1050	3990	1010	7550	144	206
MIN	22	27	23	22	18	15	120	202	186	143	30	18
CFSM	0.03	0.04	0.04	0.04	0.03	0.16	0.48	1.15	0.46	1.46	0.09	0.06
IN.	0.04	0.04	0.05	0.05	0.03	0.18	0.53	1.33	0.51	1.69	0.10	0.06

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 2003, BY WATER YEAR (WY)
MEAN	189	261	384	452	641	925	1048	927	773	374	176	215
MAX	2765	3340	4062	2808	2218	3157	3136	4216	3322	2687	2734	4330
(WY)	1987	1986	1983	1993	2001	1979	1973	1995	1974	1951	1981	1993
MIN	0.59	2.47	2.40	6.01	14.9	32.0	91.7	114	21.6	6.09	1.22	1.84
(WY)	1957	1964	1964	1945	1963	2000	2000	1958	1963	1988	1988	1988

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR		FOR 2003 WATER YEAR		WATER YEARS 1945 - 2003
ANNUAL TOTAL	249358		95129
ANNUAL MEAN	683		261		529
HIGHEST ANNUAL MEAN					1672	1993
LOWEST ANNUAL MEAN					78.2	1989
HIGHEST DAILY MEAN	14300	May 13	7550	Jul 10	34000	Dec 4 1982
LOWEST DAILY MEAN	22	A	15	Mar 5	0.20	B
ANNUAL SEVEN-DAY MINIMUM	22	Oct 11	17	Feb 28	0.20	Oct 27 1956
MAXIMUM PEAK FLOW			8040	Jul 10	44800	Dec 4 1982
MAXIMUM PEAK STAGE			13.48	Jul 10	20.21 C	Dec 4 1982
INSTANTANEOUS LOW FLOW			10 D	Jan 10	0.20	E
ANNUAL RUNOFF (CFSM)	0.89		0.34		0.69
ANNUAL RUNOFF (INCHES)	12.09		4.61		9.37
10 PERCENT EXCEEDS	1650		616		1270
50 PERCENT EXCEEDS	180		40		180
90 PERCENT EXCEEDS	26		22		12

	A - Oct. 2-3, 14-17.
	B - Oct. 21-24, Oct. 27 to Nov. 3, 1956.
	C - From floodmark.
	D - Result of freeze up.
	E - Oct. 21-24, Oct. 27 to Nov. 3, 1956; Oct. 6, 1957; Oct. 8-10, 1963.