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.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data