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 1994-2001.
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 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 8.2 8.2 25  e17  e1800  1770  454  574  753  184  50  14   
2 7.3 8.1 24  e18  e1650  1450  421  547  849  170  46  14   
3 6.1 7.6 22  e20  e1300  1220  402  491  740  178  43  12   
4 9.9 9.7 22  e21  e1050  1070  371  437  703  228  44  11   
5 14    11    19  e21  e860  953  359  424  803  249  43  11   
 
6 22    13    18  e22  e760  840  523  423  2200  194  39  10   
7 18    21    18  e22  e1000  763  2170  414  2790  168  34  9.1
8 16    23    19  e22  2060  714  1730  374  2100  154  30  8.6
9 12    46    22  e22  5800  652  1230  354  1590  150  28  12   
10 9.6 60    25  e21  6560  596  1400  348  1290  164  31  16   
 
11 9.1 67    22  e22  4170  575  2000  368  1090  152  27  14   
12 9.0 46    30  e22  2210  555  2670  351  935  136  23  12   
13 8.6 42    22  e24  1710  574  2000  312  815  120  21  10   
14 8.0 38    24  e26  1550  550  1510  306  720  109  19  9.2
15 8.4 35    25  e31  1760  546  1280  339  635  97  18  8.7
 
16 7.7 32    e24  e39  1660  762  1100  318  567  83  22  8.2
17 7.1 30    e22  e36  1340  1270  932  489  493  77  24  7.8
18 7.6 28    e20  e34  1100  1510  815  1100  451  78  25  8.2
19 7.2 26    e19  e32  966  1380  764  1140  412  81  36  17   
20 6.9 25    e18  e31  861  1190  740  919  355  80  33  19   
 
21 7.3 23    e17  e30  728  1030  735  786  377  81  28  24   
22 6.4 21    e17  e29  654  901  1410  665  396  79  30  21   
23 6.3 20    e17  e29  622  805  1600  563  350  82  70  20   
24 6.3 20    e17  e28  1110  724  1260  505  303  97  49  16   
25 6.6 21    e16  e28  5630  641  1060  450  272  104  39  13   
 
26 6.3 26    e16  e27  5960  587  940  436  247  87  35  12   
27 6.3 26    e16  e26  4870  553  836  508  226  74  24  11   
28 7.6 26    e16  e26  2360  526  727  563  219  65  21  9.5
29 7.7 26    e16  e100  ---  517  642  496  207  57  17  8.5
30 7.7 25    e16  e300  ---  495  594  423  196  56  14  7.9
 
31 8.5 ---    e17  e1900  ---  473  ---  430  ---  57  16  ---   

TOTAL 279.7 810.6 621 3026 62101 26192 32675 15853 23084 3691 979 374.7
MEAN 9.02 27.0 20.0 97.6 2218 845 1089 511 769 119 31.6 12.5
MAX 22 67 30 1900 6560 1770 2670 1140 2790 249 70 24
MIN 6.1 7.6 16 17 622 473 359 306 196 56 14 7.8
CFSM .01 .04 .03 .13 2.89 1.10 1.42 .67 1.00 .16 .04 .02
IN. .01 .04 .03 .15 3.01 1.27 1.58 .77 1.12 .18 .05 .02
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 2001, BY WATER YEAR (WY)
MEAN 191 267 390 463 641 933 1058 894 778 365 176 222
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 .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 2000 CALENDAR YEAR FOR 2001 WATER YEAR WATER YEARS 1945 - 2001
ANNUAL TOTAL 32853.1   169687.0  
ANNUAL MEAN 89.8   465      530         
HIGHEST ANNUAL MEAN 1672          1993
LOWEST ANNUAL MEAN 78.2       1989
HIGHEST DAILY MEAN 1490          May 28 6560          Feb 10 34000          Dec 4 1982
LOWEST DAILY MEAN 3.1       Sep 9-11 6.1       Oct 3 .20     A
ANNUAL SEVEN-DAY MINIMUM 3.5       Sep 5 6.5       Oct 21 .20     Oct 27 1956
MAXIMUM PEAK FLOW 7230          Feb 10 44800          Dec 4 1982
MAXIMUM PEAK STAGE 12.70     Feb 10 20.21 B Dec 4 1982
INSTANTANEOUS LOW FLOW 5.4       Oct 3 0.20 C
ANNUAL RUNOFF (CFSM) .12 .61 .69    
ANNUAL RUNOFF (INCHES) 1.59 8.23 9.39    
10 PERCENT EXCEEDS 242      1280      1280         
50 PERCENT EXCEEDS 22      65      180         
90 PERCENT EXCEEDS 7.1   9.4   12         

A - Oct. 21-24, Oct. 27 to Nov. 3, 1956.
B - From floodmark.
C - 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