Station list     Available data
ILLINOIS RIVER BASIN


05579500       LAKE FORK NEAR CORNLAND, IL



LOCATION.-- Lat 39°57'05", long 89°23'01", in NW1/4 SW1/4 sec.1, T.17 N., R.3 W., Logan County, Hydrologic Unit 07130009, on right bank at downstream side of bridge on State Highway 54, 100 ft upstream from a railroad bridge, 2.0 mi northeast of Cornland, 8 mi downstream from Jones Fork, and at mile 12.9.

DRAINAGE AREA.-- 214 mi2.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: January 1948 to current year.
 

STAGE: Water years 1994-2001.
SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1978-91.

REVISED RECORDS.-- WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 555.06 ft above sea level. Prior to Sept. 6, 1973, nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 8,930 ft3/s, Apr. 12, 1979, gage height, 23.11 ft; minimum, 0.30 ft3/s, Sept. 16, 1988.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood in May 1943 reached a stage of 23.4 ft, from floodmarks, discharge 29,000 ft3/s, by contracted-opening measurement of peak flow.

REMARKS FOR CURRENT YEAR.-- Records fair except those for Mar. 1-14, June 8-22, and 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 17  39  64  e38  1160  666  142  47  115  46    3.3 8.4
2 18  38  60  e39  617  599  129  46  128  40    3.2 8.2
3 18  36  56  e40  469  533  123  42  126  38    4.4 8.4
4 18  34  58  e41  391  e480  109  45  449  42    3.5 7.6
5 23  34  59  e42  351  422  107  59  541  37    2.9 6.6
 
6 64  38  55  e43  313  371  113  53  1130  30    2.4 7.3
7 59  167  59  e44  326  341  101  50  973  28    2.2 7.6
8 49  186  58  e42  376  334  94  45  671  25    2.0 7.4
9 42  210  49  e40  736  314  89  41  e550  22    1.9 9.5
10 38  393  49  e38  871  275  89  42  e450  19    1.8 9.2
 
11 35  325  57  e36  618  251  96  83  398  17    1.6 8.1
12 33  265  e100  e35  524  256  96  108  335  16    1.4 7.6
13 31  271  e170  e35  464  255  83  91  300  13    1.4 7.8
14 30  273  e140  e45  502  230  79  89  253  12    1.2 6.2
15 82  235  e110  e100  677  238  81  86  230  10    1.1 5.9
 
16 102  212  e90  160  623  315  78  83  192  9.4 1.4 6.1
17 88  183  e82  131  520  461  75  79  162  8.6 1.3 6.5
18 75  159  e74  110  450  434  69  224  147  9.0 2.5 7.6
19 66  149  e68  e85  415  398  69  182  132  9.1 4.5 9.2
20 60  138  e62  e75  371  368  72  153  118  8.2 3.2 9.4
 
21 57  116  e58  e66  328  335  68  146  117  7.1 1.5 9.4
22 52  107  e55  e60  306  302  62  137  117  6.2 1.4 9.1
23 48  100  e52  e56  273  278  60  124  100  6.1 7.1 8.5
24 46  94  e49  e52  683  263  60  116  84  6.0 4.5 8.3
25 45  94  e46  e49  1890  244  54  106  77  4.8 4.3 8.8
 
26 45  94  e44  e47  1870  229  54  110  70  10    4.0 7.7
27 44  84  e42  e45  1130  210  53  118  63  7.5 4.4 7.9
28 41  78  e41  e44  771  196  50  105  58  5.1 5.5 7.6
29 39  74  e40  722  ---  187  47  95  54  4.4 6.6 7.5
30 38  68  e39  2070  ---  165  46  88  51  4.7 6.9 6.4
 
31 38  ---  e38  2110  ---  152  ---  94  ---  3.5 8.9 ---   

TOTAL 1441 4294 2024 6540 18025 10102 2448 2887 8191 504.7 102.3 235.8
MEAN 46.5 143 65.3 211 644 326 81.6 93.1 273 16.3 3.30 7.86
MAX 102 393 170 2110 1890 666 142 224 1130 46 8.9 9.5
MIN 17 34 38 35 273 152 46 41 51 3.5 1.1 5.9
CFSM .22 .67 .31 .99 3.01 1.52 .38 .44 1.28 .08 .02 .04
IN. .25 .75 .35 1.14 3.13 1.76 .43 .50 1.42 .09 .02 .04
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2001, BY WATER YEAR (WY)
MEAN 63.0 79.5 141 150 216 265 287 290 239 132 72.8 41.8
MAX 680 1009 1260 988 712 1116 1016 1024 1099 772 887 546
(WY) 1978 1986 1983 1950 1959 1979 1979 1995 1974 1981 1981 1993
MIN 2.02 2.06 2.46 4.01 5.02 6.56 16.7 7.27 17.0 7.20 3.30 1.57
(WY) 1955 1955 1964 1977 1963 1954 1954 1954 1963 1954 2001 1954

SUMMARY STATISTICS FOR 2000 CALENDAR YEAR FOR 2001 WATER YEAR WATER YEARS 1948 - 2001
ANNUAL TOTAL 42337      56794.8  
ANNUAL MEAN 116      156      165     
HIGHEST ANNUAL MEAN 372      1993
LOWEST ANNUAL MEAN 8.89 1954
HIGHEST DAILY MEAN 1470          Jun 21 2110          Jan 31 7000      Dec 4 1982
LOWEST DAILY MEAN 11          A 1.1       Aug 15 .77 Sep 16 1988
ANNUAL SEVEN-DAY MINIMUM 12          Jan 22 1.3       Aug 11 .96 Sep 7 1988
MAXIMUM PEAK FLOW 2230          Jan 31 8930      Apr 12 1979
MAXIMUM PEAK STAGE 17.06     Jan 31 23.11 Apr 12 1979
INSTANTANEOUS LOW FLOW .78     Aug 18 .30 Sep 16 1988
ANNUAL RUNOFF (CFSM) .54 .73 .77
ANNUAL RUNOFF (INCHES) 7.36 9.87 10.45
10 PERCENT EXCEEDS 262      405      400     
50 PERCENT EXCEEDS 62      60      62     
90 PERCENT EXCEEDS 16      6.2   6.8  

A - Jan. 24-26, estimated due to backwater from ice.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data