Station list     Available data
POPE CREEK BASIN


05467000       POPE CREEK NEAR KEITHSBURG, IL



LOCATION.-- Lat 41°07'44", long 90°55'09", in SE1/4SE1/4 sec.11, T.13 N., R.5 W., Mercer County, Hydrologic Unit 07080104, on right bank at downstream side of bridge on County Road 900 E, 1.8 mi northeast of Keithsburg, and at mile 3.0.

DRAINAGE AREA.-- 174 mi2.

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

DISCHARGE: October 1934 to September 1986. Monthly discharge only for some periods, published in WSP 1308. Seven-month period (March to September), water years 1987-90. October 1990 to September 1996. October 1997 to current year.
 

STAGE: Water years 1994-1996;1998-2000.

REVISED RECORDS.-- WSP 1508: 1935-37(M), 1938, 1939-43(M). WDR IL-81-1: 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 524.07 ft above sea level (levels by U.S. Army Corps of Engineers). Prior to Aug. 1, 1975, nonrecording gage and crest-stage gage at site 1,000 ft upstream at same datum. Aug. 1, 1975 to Aug. 24, 1981, water-stage recorder at site 500 ft downstream at same datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 8,900 ft3/s, Apr. 22, 1973, gage height, 27.88 ft, from graph based on gage readings at site 1,000 ft upstream at same datum; maximum gage height, 29.08 ft, July 24, 1993, discharge, 7,270 ft3/s, backwater from the Mississippi River; minimum daily discharge, 0.53 ft3/s, Aug. 6, 1989.

REMARKS FOR CURRENT YEAR.-- Records good except those for Apr. 23 to May 11, 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 52  16  14  28  e17  247  62  162  419  225  72  20 
2 38  16  15  32  e18  215  62  156  303  236  64  19 
3 34  16  15  36  e19  190  62  147  223  251  55  18 
4 38  16  16  29  e19  175  60  143  193  422  50  17 
5 37  16  30  22  e20  162  57  135  180  745  48  17 
 
6 34  16  49  29  e20  150  54  129  163  439  92  16 
7 29  16  44  25  e21  139  56  125  148  330  234  16 
8 26  16  35  23  e21  133  58  122  139  271  107  15 
9 24  16  35  30  e21  126  55  139  130  237  84  15 
10 22  15  70  39  e23  115  52  149  121  450  67  15 
 
11 21  15  63  41  e25  106  59  140  125  334  54  16 
12 20  16  52  36  e27  102  55  132  136  254  47  31 
13 18  15  46  29  e26  100  50  124  135  221  46  25 
14 18  15  41  29  e25  96  48  110  208  196  44  28 
15 18  15  39  36  e25  93  46  102  200  173  40  25 
 
16 19  15  37  33  e26  88  52  103  173  158  36  26 
17 19  15  35  27  e28  81  93  101  150  143  34  21 
18 18  15  27  29  e30  77  74  99  134  131  32  18 
19 18  15  e24  24  e32  90  76  96  124  126  31  16 
20 17  15  e22  e25  e31  99  477  85  121  117  29  19 
 
21 18  15  e23  e23  e30  100  1150  81  139  108  28  21 
22 17  15  e21  e21  59  94  585  79  133  99  27  31 
23 17  16  e20  e20  213  86  403  79  132  92  28  34 
24 17  16  e19  e19  274  88  327  73  345  85  27  44 
25 17  18  e18  e18  237  87  271  65  1420  80  25  65 
 
26 18  17  e18  e17  587  81  234  64  937  79  24  55 
27 16  16  e19  e16  469  83  214  88  442  78  23  41 
28 16  15  e20  e15  314  82  202  80  350  71  25  33 
29 16  15  e21  e15  244  76  186  72  296  67  26  28 
30 16  14  e23  e16  ---  68  171  67  255  66  24  25 
 
31 16  ---  e25  e17  ---  64  ---  884  ---  72  22  --- 

TOTAL 704 467 936 799 2901 3493 5351 4131 7974 6356 1545 770
MEAN 22.7 15.6 30.2 25.8 100 113 178 133 266 205 49.8 25.7
MAX 52 18 70 41 587 247 1150 884 1420 745 234 65
MIN 16 14 14 15 17 64 46 64 121 66 22 15
CFSM .13 .09 .17 .15 .57 .65 1.03 .77 1.53 1.18 .29 .15
IN. .15 .10 .20 .17 .62 .75 1.14 .88 1.70 1.36 .33 .16

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1935 - 2000, BY WATER YEAR (WY)
MEAN 56.8 68.2 74.2 93.6 155 179 200 182 180 125 65.3 55.3
MAX 698 520 576 461 585 640 822 717 1020 1303 693 471
(WY) 1999 1999 1983 1974 1986 1993 1973 1996 1990 1982 1993 1980
MIN 2.40 2.96 2.63 2.74 5.29 19.1 11.4 7.68 10.9 1.24 2.75 1.82
(WY) 1964 1957 1965 1977 1964 1956 1956 1989 1936 1989 1989 1988

SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1935 - 2000
ANNUAL TOTAL 58332.3   35427     
ANNUAL MEAN 160      96.8   121         
HIGHEST ANNUAL MEAN 399          1993
LOWEST ANNUAL MEAN 25.8       1940
HIGHEST DAILY MEAN 2190          Apr 23 1420          Jun 25 7030          Oct 18 1998
LOWEST DAILY MEAN 7.5       Sep 25, 26 14          A .53     Aug 6 1989
ANNUAL SEVEN-DAY MINIMUM 8.5       Sep 20 15          Nov 27 .78     Aug 1 1989
INSTANTANEOUS PEAK FLOW 1910          May 31 8900      B Apr 22 1973
INSTANTANEOUS PEAK STAGE 26.95     May 31 29.08 C Jul 24 1993
INSTANTANEOUS LOW FLOW 12          Nov 30
ANNUAL RUNOFF (CFSM) .92 .56 .69    
ANNUAL RUNOFF (INCHES) 12.47 7.57 9.43    
10 PERCENT EXCEEDS 359      228      260         
50 PERCENT EXCEEDS 88      44      47         
90 PERCENT EXCEEDS 15      16      6.7      
A - Nov. 30 and Dec. 1.
B - Gage height, 27.88 ft. from graph based on gage readings at site 1,000 ft upstream at same datum.
 C - Discharge 7,270 ft3/s, backwater from the Mississippi River.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data