05567500 DATA: Discharge Tables, 2000

Station list Available data
ILLINOIS RIVER BASIN

05567500 MACKINAW RIVER NEAR CONGERVILLE, IL

LOCATION.-- Lat 40°37'25", long 89°14'30", 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 1994-2000.

SURFACE-WATER QUALITY

SEDIMENT: June 1983 to September 1983.

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 rain gage, and crest-stage gage. Datum of gage is 607.01 ft above sea level. 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 June 9 to July 5, which are fair, and 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	13	6.4	11	15	e7.5	34	28	120	481	291	24	6.5
2	13	5.9	11	16	e8.0	32	27	130	398	243	23	6.5
3	16	6.4	12	16	e8.4	29	26	136	339	243	20	5.4
4	22	6.6	13	18	e8.7	26	24	131	297	271	19	4.9
5	21	7.8	21	17	e8.9	24	25	126	291	287	20	4.2

6	16	9.6	23	14	e9.1	22	20	117	258	369	20	4.0
7	14	9.9	21	11	9.3	20	24	111	229	353	20	3.7
8	13	8.7	16	12	9.3	20	26	112	211	241	19	3.2
9	12	8.3	14	13	9.9	19	29	155	199	183	18	3.1
10	12	8.6	15	14	11	17	30	196	171	163	16	3.1

11	11	11	13	13	13	17	32	181	162	168	14	3.1
12	10	12	14	12	13	16	28	166	154	144	12	7.3
13	8.6	10	14	11	13	16	28	206	178	123	12	6.5
14	8.1	8.9	16	10	13	16	26	174	171	104	11	5.6
15	7.9	8.5	19	11	14	16	25	144	198	91	9.9	7.0

16	7.7	9.7	20	11	14	19	27	129	233	80	9.3	8.0
17	6.5	9.7	19	9.4	15	18	28	127	208	71	9.0	7.4
18	6.0	11	19	9.3	23	21	26	194	160	63	8.1	6.6
19	5.8	11	18	7.9	32	32	35	609	137	61	8.1	5.3
20	5.7	11	16	11	37	50	82	626	156	57	7.1	5.1

21	6.5	11	15	8.3	35	73	241	451	514	51	6.5	5.2
22	7.3	11	14	e8.0	35	70	421	332	938	45	7.9	5.2
23	6.2	12	13	e7.8	38	75	275	304	782	41	11	6.1
24	5.9	12	13	7.7	54	58	240	263	797	37	11	11
25	5.9	12	13	7.7	73	47	211	207	907	34	8.2	16

26	5.9	15	13	9.5	58	40	188	175	754	31	7.1	16
27	6.2	15	13	e10	45	37	166	1080	574	30	6.7	12
28	7.0	11	13	e8.0	35	35	149	1490	455	32	8.0	11
29	6.9	10	14	e6.6	29	33	138	1120	399	29	11	9.7
30	7.3	12	14	e6.3	---	31	125	773	366	26	8.0	9.1

31	7.8	---	14	e6.8	---	29	---	595	---	24	6.7	---

TOTAL	302.2	302.0	474	338.3	679.1	992	2750	10680	11117	3986	391.6	207.8
MEAN	9.75	10.1	15.3	10.9	23.4	32.0	91.7	345	371	129	12.6	6.93
MAX	22	15	23	18	73	75	421	1490	938	369	24	16
MIN	5.7	5.9	11	6.3	7.5	16	20	111	137	24	6.5	3.1
CFSM	.01	.01	.02	.01	.03	.04	.12	.45	.48	.17	.02	.01
IN.	.01	.01	.02	.02	.03	.05	.13	.52	.54	.19	.02	.01

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 2000, BY WATER YEAR (WY)
MEAN	194	271	397	469	613	935	1057	900	778	369	179	225
MAX	2765	3340	4062	2808	2089	3157	3136	4216	3322	2687	2734	4330
(WY)	1987	1986	1983	1993	1951	1979	1973	1995	1974	1951	1981	1993
MIN	.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 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1945 - 2000
ANNUAL TOTAL	205873.9		32220.0
ANNUAL MEAN	564		88.0		531
HIGHEST ANNUAL MEAN					1672	1993
LOWEST ANNUAL MEAN					78.2	1989
HIGHEST DAILY MEAN	10400	Jun 15	1490	May 28	34000	Dec 4 1982
LOWEST DAILY MEAN	5.7	Oct 20	3.1	Sep 9-11	.20	A
ANNUAL SEVEN-DAY MINIMUM	6.2	Oct 19	3.5	Sep 5	.20	Oct 27 1956
INSTANTANEOUS PEAK FLOW			1570	May 28	44800	Dec 4 1982
INSTANTANEOUS PEAK STAGE			5.01	May 28	20.21 B	Dec 4 1982
INSTANTANEOUS LOW FLOW			2.2 C	Jan 17	0.20 D
ANNUAL RUNOFF (CFSM)	.74		.11		.69
ANNUAL RUNOFF (INCHES)	9.99		1.56		9.41
10 PERCENT EXCEEDS	1470		242		1280
50 PERCENT EXCEEDS	68		16		180
90 PERCENT EXCEEDS	8.9		6.7		12

A - Oct. 21-24, Oct. 27 to Nov. 3, 1956.
B - From floodmark.
C - Result of freezeup.
D - Oct. 21-24, Oct. 27 to Nov. 3, 1956; Oct. 6, 1957; Oct. 8-10, 1963.