Station list     Available data
KASKASKIA RIVER BASIN


05594450       SILVER CREEK NEAR TROY, IL



LOCATION.-- Lat 38°43'00", long 89°49'45", in SE1/4SW1/4 sec.12, T.3 N., R.7 W., Madison County, Hydrologic Unit 07140204, on right bank at upstream side of bridge on U.S. Highway 40, 0.2 mi upstream from railroad bridge, 1.9 mi upstream from East Fork Silver Creek, 1.9 mi southeast of Troy, and at mile 44.6.

DRAINAGE AREA.-- 154 mi2.

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

DISCHARGE: October 1966 to current year.
 

STAGE: Water years 1994-2000.
SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1978-91.

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

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 438.91 ft above sea level.

REMARKS FOR CURRENT YEAR.-- Records good except those for the period of Oct. 1 to Feb. 17, 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 e1.0   e1.2   e1.5 e1.1 e2.0 18    12    15    32    55    694  23   
2 e1.5   e3.0   e1.3 e1.0 e2.2 15    11    13    23    73    210  19   
3 e2.0   e2.5   e2.5 e5.0 e2.4 14    11    11    18    63    70  17   
4 e2.5   e2.2   e4.3 e10    e2.1 14    12    9.8 15    37    37  14   
5 e2.0   e1.9   6.4 e6.0 e2.0 12    8.9 8.5 21    28    27  12   
 
6 e1.8   e1.7   5.5 e4.0 e1.9 12    9.2 7.5 12    19    33  14   
7 e2.0   e1.6   3.7 e3.5 e1.8 14    37    52    9.3 15    122  11   
8 29      e1.5   3.0 e3.2 e1.7 13    17    96    8.1 12    739  9.3
9 14      e1.4   3.9 e5.0 e1.7 11    11    69    7.2 9.6 886  11   
10 9.7   e1.3   37    e4.2 e1.8 9.0 12    33    5.9 9.1 604  16   
 
11 6.4   e1.3   13    e3.5 e2.0 8.8 13    22    6.3 264    152  236   
12 3.8   e1.2   8.2 e3.0 e2.3 11    11    17    24    545    47  185   
13 2.3   e1.2   e6.5 e2.5 e3.5 11    8.8 18    12    618    30  151   
14 2.4   e1.1   e5.4 e2.3 6.8 10    8.1 13    21    308    23  54   
15 2.1   e1.1   e4.7 e2.1 4.6 10    7.5 9.4 21    72    18  35   
 
16 1.5   e1.0   e4.1 e2.0 4.6 11    7.1 8.1 29    32    15  26   
17 2.1   e1.0   e3.5 e1.9 3.9 11    8.1 7.1 34    23    16  18   
18 2.2   e.95 e3.0 e5.5 309    9.9 6.6 6.1 22    114    398  19   
19 2.3   e.95 e2.6 e4.0 224    12    6.0 5.1 28    1380    220  14   
20 1.5   e.90 e2.2 e3.5 71    27    11    4.7 17    1930    47  11   
 
21 e1.1   e.90 e2.0 e3.3 35    36    14    4.7 49    1290    28  8.5
22 e1.0   e.85 e1.8 e3.0 23    49    11    5.5 171    337    20  7.0
23 e.90 e1.4   e1.7 e2.7 17    33    9.2 39    76    69    16  5.6
24 e.85 e2.5   e1.6 e2.5 19    24    17    14    2060    33    233  8.5
25 e.80 e4.5   e1.5 e2.3 16    18    18    14    4500    23    477  187   
 
26 e.74 e3.5   e1.4 e2.1 19    15    21    25    3320    17    605  464   
27 e.68 e3.0   e1.3 e1.9 26    23    28    367    1730    14    682  605   
28 e.64 e2.5   e1.3 e1.8 19    19    24    525    980    243    273  369   
29 e.62 e2.0   e1.2 e1.7 21    16    18    326    349    1400    78  95   
30 e.60 e1.7   e1.2 e1.8 ---    14    15    91    99    3490    42  45   
 
31 e.60 ---      e1.1 e1.9 ---    13    ---    46    ---    1550    30  ---   

TOTAL 100.63 51.85 138.4 98.3 846.3 513.7 403.5 1882.5 13699.8 14072.7 6872 2689.9
MEAN 3.25 1.73 4.46 3.17 29.2 16.6 13.4 60.7 457 454 222 89.7
MAX 29 4.5 37 10 309 49 37 525 4500 3490 886 605
MIN .60 .85 1.1 1.0 1.7 8.8 6.0 4.7 5.9 9.1 15 5.6
CFSM .02 .01 .03 .02 .19 .11 .09 .39 2.97 2.95 1.44 .58
IN. .02 .01 .03 .02 .20 .12 .10 .45 3.31 3.40 1.66 .65

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 2000, BY WATER YEAR (WY)
MEAN 23.4 85.2 164 143 208 228 241 146 110 76.2 31.7 26.0
MAX 165 509 902 562 646 927 738 827 501 570 296 408
(WY) 1987 1985 1983 1974 1982 1978 1994 1995 1998 1969 1998 1993
MIN .23 .34 .42 .31 9.25 6.74 13.4 5.26 .91 1.44 .75 .093
(WY) 1972 1972 1977 1977 1978 1981 2000 1977 1988 1984 1971 1988

SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1967 - 2000
ANNUAL TOTAL 45174.74     41369.58    
ANNUAL MEAN 124          113          123         
HIGHEST ANNUAL MEAN 244          1983
LOWEST ANNUAL MEAN 23.1       1980
HIGHEST DAILY MEAN 5150              Feb 8 4500              Jun 25 7740          Apr 12 1979
LOWEST DAILY MEAN .60 A     Oct 30,31 .60 A     Oct 30,31 .00     B
ANNUAL SEVEN-DAY MINIMUM .67         Oct 25 .67         Oct 25 .00     Sep 29 1968
INSTANTANEOUS PEAK FLOW 5180              Jun 25 10600      C Apr 12 1979
INSTANTANEOUS PEAK STAGE 16.38         Jun 25 17.94     May 17 1990
ANNUAL RUNOFF (CFSM) .80     .73     .80    
ANNUAL RUNOFF (INCHES) 10.91     9.99     10.86    
10 PERCENT EXCEEDS 334          227          300         
50 PERCENT EXCEEDS 19          11          15         
90 PERCENT EXCEEDS 1.1       1.4       .77    
A - Estimated, but may have been less during periods of estimated discharges in Oct.
B - Several days in 1967-68, 1973, 1988.
 C - Gage height, 17.52 ft.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data