Station list     Available data
BIG MUDDY RIVER BASIN


05595820       CASEY FORK AT MT. VERNON, IL



LOCATION.-- Lat 38°17'12", long 88°52'19", in NE1/4NE1/4 sec.9, T.3 S., R.3 E., Jefferson County, Hydrologic Unit 07140106, on left bank on upstream side of bridge on State Highway 142, 0.2 mi downstream from Sevenmile Creek, about 2 mi southeast of Mt. Vernon, and at mile 18.8.

DRAINAGE AREA.-- 76.9 mi2.

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

DISCHARGE: October 1985 to current year.
 

STAGE: Water years 1995-2001. October 1985 to September 1994 (8 AM gage heights). Gage-height record for April 1965 to May 1971 available in files of U.S. Army Corps of Engineers.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 420.00 ft above sea level (levels by U.S. Army Corps of Engineers).

REMARKS.-- Sewage-treatment plant upstream at Mt. Vernon.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 16,100 ft3/s, May 17, 1990, gage height 17.03 ft; minimum daily discharge, 0.15 ft3/s, Sept 29, 1989.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood of Apr. 4, 1968, reached a stage of 14.60 ft, from records of U.S. Army Corps of Engineers.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. Effluent from sewage-treatment plant upstream at Mt. Vernon averaged about 3.8 ft3/s.
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 2.9 e2.8 e11    11    80  53  24    6.2 29    3.6 3.4 4.0
2 2.9 e3.0 e10    10    48  47  19    6.2 12    3.3 3.4 3.7
3 2.7 e3.0 e9.5 9.8 31  39  451    6.2 7.0 3.2 3.8 3.7
4 2.6 e3.0 e9.0 11    30  35  161    5.6 23    3.9 3.4 4.8
5 2.7 e3.1 e9.0 12    28  29  77    5.1 80    3.3 3.3 7.2
 
6 3.0 17    e8.5 15    24  24  56    5.3 129    3.2 3.2 3.7
7 2.8 13    7.8 19    21  22  44    6.2 20    3.3 3.0 3.4
8 2.8 4.4 7.6 23    25  21  34    6.2 11    3.1 3.0 5.8
9 2.8 15    7.1 20    645  20  28    5.8 7.7 487    3.0 11   
10 3.0 34    6.4 15    1080  18  28    5.4 5.7 265    3.5 4.3
 
11 2.9 10    57    14    139  17  27    5.3 4.8 24    3.1 3.5
12 2.8 4.3 148    14    83  19  26    4.7 4.9 13    2.9 3.2
13 2.8 13    31    21    67  25  18    4.4 3.9 8.7 3.0 3.1
14 3.1 25    31    207    229  20  15    4.6 3.7 6.8 3.1 3.1
15 4.7 e11    28    406    662  18  31    4.8 9.6 5.3 3.0 3.0
 
16 6.8 e8.0 29    158    411  58  20    4.5 12    4.6 3.0 2.9
17 7.8 e6.0 39    78    126  40  15    4.5 5.2 4.3 3.0 2.9
18 3.9 e5.0 38    e55    71  26  13    5.5 3.8 5.2 27    5.3
19 3.3 e4.5 28    e40    60  23  12    14    3.3 5.7 185    11   
20 e3.1 e4.1 21    e30    52  21  13    6.5 3.1 4.7 13    4.2
 
21 e2.9 e3.7 e17    e20    41  20  12    16    21    4.1 6.1 3.4
22 e2.7 e3.3 e13    e18    36  18  11    10    27    13    4.3 3.2
23 e2.8 e3.0 e11    e16    34  17  10    7.8 10    11    3.9 3.1
24 e2.9 e4.0 e10    e15    44  16  9.5 6.1 5.6 4.4 5.3 3.2
25 e3.0 121    e9.0 e14    954  15  8.8 5.6 4.2 3.9 58    3.1
 
26 e3.1 164    e8.5 e13    200  13  8.3 5.4 3.6 3.7 40    2.9
27 e3.2 49    e9.5 e14    89  13  8.3 4.6 3.2 3.7 13    2.9
28 e3.1 26    12    e13    68  12  7.7 4.2 4.7 3.5 7.1 2.9
29 e3.1 e18    12    e50    ---  13  6.8 4.3 5.0 3.4 5.2 2.9
30 e2.9 e13    11    485    ---  16  6.6 5.0 3.9 3.4 4.6 3.0
 
31 e2.6 ---    11    201    ---  19  ---    17    ---    3.4 4.4 ---   

TOTAL 101.7 594.2 659.9 2027.8 5378 747 1201.0 203.0 466.9 918.7 431.0 124.4
MEAN 3.28 19.8 21.3 65.4 192 24.1 40.0 6.55 15.6 29.6 13.9 4.15
MAX 7.8 164 148 485 1080 58 451 17 129 487 185 11
MIN 2.6 2.8 6.4 9.8 21 12 6.6 4.2 3.1 3.1 2.9 2.9
CFSM .04 .26 .28 .85 2.50 .31 .52 .09 .20 .39 .18 .05
IN. .05 .29 .32 .98 2.60 .36 .58 .10 .23 .44 .21 .06
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1986 - 2001, BY WATER YEAR (WY)
MEAN 7.44 91.2 55.3 115 131 135 176 127 54.0 26.0 8.39 16.8
MAX 27.2 542 233 327 383 456 540 809 279 101 28.6 155
(WY) 1994 1994 1991 1993 1986 1989 1996 1995 2000 1993 2000 1993
MIN 2.86 3.16 4.51 4.75 10.4 24.1 40.0 4.46 2.98 2.71 1.65 2.06
(WY) 1996 2000 1990 2000 1996 2001 2001 1988 1991 1991 1990 1995

SUMMARY STATISTICS FOR 2000 CALENDAR YEAR FOR 2001 WATER YEAR WATER YEARS 1986 - 2001
ANNUAL TOTAL 18641.1   12853.6      
ANNUAL MEAN 50.9   35.2       78.1  
HIGHEST ANNUAL MEAN 123      1994
LOWEST ANNUAL MEAN 21.3   1987
HIGHEST DAILY MEAN 2920          Jun 24 1080              Feb 10 9940      May 18 1995
LOWEST DAILY MEAN 2.6       A 2.6           B .15 Sep 29 1989
ANNUAL SEVEN-DAY MINIMUM 2.8       Oct 3 2.8           Oct 3 .38 Dec 11 1989
MAXIMUM PEAK FLOW 1760              Feb 10 16100      May 17 1990
MAXIMUM PEAK STAGE 11.60         Feb 10 17.03 May 17 1990
INSTANTANEOUS LOW FLOW 1.9   C     Oct 3,27
ANNUAL RUNOFF (CFSM) .66 .46     1.02
ANNUAL RUNOFF (INCHES) 9.02 6.22     13.80
10 PERCENT EXCEEDS 70      56          112     
50 PERCENT EXCEEDS 9.5   9.0       11     
90 PERCENT EXCEEDS 3.0   3.0       2.9  

A - Sept. 9, 17, Oct. 4, 31 (estimated), but may have been less during periods of estimated discharges in Oct. and Nov.
B - Oct. 4, 31 (estimated), but may have been less during periods of estimated discharges in Oct. and Nov.
C - May have been less during periods of estimated discharges in Oct. and Nov.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data