Station list     Available data
ILLINOIS RIVER BASIN


05551700       BLACKBERRY CREEK NEAR YORKVILLE, IL



LOCATION.-- Lat 41°40'18", long 88°26'29", in SE1/4NW1/4 sec.21, T.37 N., R.7 E., Kendall County, Hydrologic Unit 07120007, on right bank 300 ft upstream from bridge on State Highway 47, 2.0 mi north of Yorkville, and at mile 3.3.

DRAINAGE AREA.-- 70.2 mi2.

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

DISCHARGE: October 1960 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, phone telemeter, and crest-stage gage. Datum of gage is 612.34 ft above sea level.

REMARKS.-- Diversion about 7 miles upstream near Jericho Rd. that crosses the watershed divide during overbank flow.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE -WATER DISCHARGE AND STAGE: Maximum discharge, 5,510 ft3/s, from rating curve extended above 3,900 ft3/s, July 18, 1996, gage height, 13.16 ft, backwater from debris jam; minimum, 0.10 ft3/s, Dec. 7, 1962, result of freeze up.

REMARKS FOR CURRENT YEAR.-- Records good except those for Oct.1-Mar. 12, which are fair, and 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 15  14  35  e19  e105  146  64  40  51  18    7.0 7.1
2 14  15  33  e21  e90  131  63  38  94  16    6.1 5.4
3 15  16  31  e22  e74  120  61  36  90  19    5.7 5.3
4 34  16  30  e23  e66  113  57  35  66  19    5.5 6.3
5 55  16  e27  e24  e56  104  53  33  74  18    5.0 7.9
 
6 48  19  e23  e25  e48  95  65  32  185  17    e4.9 8.0
7 35  78  e27  e24  e52  89  81  34  148  15    e4.6 14   
8 29  107  e30  e24  61  85  76  38  114  15    e4.5 14   
9 25  119  e28  e22  291  81  75  35  94  14    e4.2 9.6
10 23  229  e27  e21  492  76  72  33  74  13    e4.8 12   
 
11 22  188  e26  e20  542  76  68  38  61  12    e4.8 13   
12 21  129  e29  e20  246  79  94  42  56  11    e4.5 9.8
13 20  105  e31  e21  189  96  111  36  57  11    e4.3 8.5
14 19  84  e28  e23  178  95  88  41  49  9.8 3.6 5.8
15 18  68  e26  e26  202  104  90  39  47  9.4 4.4 8.2
 
16 17  59  e25  e30  186  157  107  32  44  9.8 5.4 6.3
17 17  55  e24  e36  156  155  93  31  41  9.1 5.5 6.9
18 17  49  e22  e32  140  150  83  28  36  9.2 5.7 7.7
19 16  45  e21  e27  120  137  67  25  34  8.9 4.9 124   
20 16  42  e20  e22  117  124  65  24  31  8.2 5.1 137   
 
21 18  e39  e19  e18  113  114  75  26  30  7.8 4.1 100   
22 18  e37  e18  e18  102  105  70  29  32  8.1 3.8 87   
23 17  e35  e17  e17  94  100  64  29  31  9.2 4.4 62   
24 18  33  e16  e17  111  91  64  28  30  12    5.0 81   
25 18  32  e16  e16  340  82  59  27  27  16    4.6 71   
 
26 23  37  e15  e16  487  74  54  33  25  15    9.8 48   
27 17  40  e15  e16  245  71  51  43  22  12    8.0 36   
28 16  38  e15  e16  172  70  46  45  20  10    5.1 28   
29 16  36  e16  e25  ---  70  43  39  20  9.7 4.1 24   
30 16  36  e17  e65  ---  70  41  35  18  9.9 4.0 21   
 
31 15  ---  e18  e120  ---  66  ---  33  ---  8.2 9.3 ---   

TOTAL 668 1816 725 826 5075 3126 2100 1057 1701 380.3 162.7 974.8
MEAN 21.5 60.5 23.4 26.6 181 101 70.0 34.1 56.7 12.3 5.25 32.5
MAX 55 229 35 120 542 157 111 45 185 19 9.8 137
MIN 14 14 15 16 48 66 41 24 18 7.8 3.6 5.3
CFSM .31 .86 .33 .38 2.58 1.44 1.00 .49 .81 .17 .07 .46
IN. .35 .96 .38 .44 2.69 1.66 1.11 .56 .90 .20 .09 .52
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1961 - 2001, BY WATER YEAR (WY)
MEAN 29.4 42.5 46.7 44.7 63.3 86.2 89.0 75.8 63.5 47.0 28.6 32.2
MAX 126 175 217 146 202 360 249 221 197 381 172 131
(WY) 1973 1986 1983 1993 1997 1979 1979 1974 1974 1996 1987 1987
MIN 5.42 7.44 4.16 4.25 5.46 22.9 27.2 16.7 14.3 8.43 4.21 5.23
(WY) 1964 1964 1964 1977 1963 1964 1963 1989 1977 1961 1991 1976

SUMMARY STATISTICS FOR 2000 CALENDAR YEAR FOR 2001 WATER YEAR WATER YEARS 1961 - 2001
ANNUAL TOTAL 14302.4   18611.8      
ANNUAL MEAN 39.1   51.0       54.0      
HIGHEST ANNUAL MEAN 97.8       1993
LOWEST ANNUAL MEAN 16.7       1977
HIGHEST DAILY MEAN 289          Apr 21 542              Feb 11 3460          Jul 19 1996
LOWEST DAILY MEAN 9.2       Sep 7 3.6   A     Aug 14 1.6       Aug 2 1991
ANNUAL SEVEN-DAY MINIMUM 9.9       Sep 4 4.4           Aug 9 2.1       Jul 31 1991
MAXIMUM PEAK FLOW 609              Feb 11 5510      B Jul 18 1996
MAXIMUM PEAK STAGE 7.12         Feb 11 13.16 C Jul 18 1996
INSTANTANEOUS LOW FLOW 2.8   A     Aug 14 .10 D Dec 7 1962
ANNUAL RUNOFF (CFSM) .56 .73     .77    
ANNUAL RUNOFF (INCHES) 7.58 9.86     10.45    
10 PERCENT EXCEEDS 79      113          110         
50 PERCENT EXCEEDS 26      30          31         
90 PERCENT EXCEEDS 15      7.8       10         

A - May have been less during period of missing record, Aug. 6-13.
B - From rating curve extended above 3,900 ft3/s.
C - Backwater from debris jam.
D - Result of freeze up.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data