Station list     Available data
ROCK RIVER BASIN


05439000       SOUTH BRANCH KISHWAUKEE RIVER AT DE KALB, IL

 

LOCATION.-- Lat 41°55'52", long 88°45'34" (NAD of 1927), in SW1/4NE1/4 sec.22, T.40 N., R.4 E., De Kalb County, Hydrologic Unit 07090006, on left bank 100 ft downstream from bridge on State Highway 38 in De Kalb, and at mile 48.5.
 

DRAINAGE AREA.-- 77.7 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: July 1925 to October 1933, October 1979 to current year.
 

STAGE: Water years 1995 to current year.

SURFACE-WATER QUALITY
 

SEDIMENT: October 1979 to September 1981.
 

REVISED RECORDS.-- WDR IL-80-1: Drainage area.
 

GAGE.-- Water-stage recorder, phone telemeter, and crest stage gage. Datum of gage is 831.88 ft above NGVD of 1929. Mar. 23, 1980, to Sept. 30, 1983, at datum 3.0 ft higher. Oct. 1, 1979, to Mar. 22, 1980, nonrecording gage at same site at datum 3.0 ft higher. Prior to Sept. 30, 1933, nonrecording gage at same site at datum 3.40 ft higher.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,500 ft3/s, July 2, 1983, gage height, 15.80 ft; present datum; no flow, at times in several years.

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 1,650 mg/L June 13, 1981; minimum daily mean, 10 mg/L Mar. 9, 1980.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 3,070 tons June 13, 1981; minimum daily, 0.04 ton Oct. 15, 1979.
 

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 0.09 0.81 0.96 4.2 e1.1 67  150  51  921  34    1.8   0.86
2 0.03 6.2   1.7   e3.9 e1.1 80  130  44  538  31    1.5   0.66
3 0.10 24      1.4   e3.6 e1.1 58  113  39  338  43    5.6   0.69
4 0.08 18      1.2   e2.9 e1.1 69  96  42  260  46    17      0.52
5 0.07 19      2.8   e2.4 e1.1 316  83  38  217  36    5.4   1.5  
 
6 0.06 3.9   2.3   e2.1 e1.1 265  77  35  185  30    3.2   1.1  
7 0.01 2.4   1.5   1.8 e1.1 184  69  32  160  27    2.3   0.73
8 0.00 2.0   1.3   2.1 e1.1 138  65  31  141  25    1.9   0.49
9 0.00 1.7   7.3   2.5 e1.1 110  48  31  126  29    1.8   0.79
10 0.00 1.5   159      3.1 e1.1 87  44  51  123  29    1.4   0.28
 
11 0.05 1.3   156      4.1 e1.2 74  41  152  118  23    2.9   0.24
12 0.21 1.1   94      4.7 e1.2 58  36  116  298  21    3.0   0.31
13 0.10 1.4   60      5.2 e1.2 47  35  161  253  19    2.0   0.24
14 8.5   1.9   37      4.9 e1.2 50  33  369  183  17    0.93 0.17
15 2.3   2.0   27      4.3 e1.2 38  29  428  152  15    0.60 0.74
 
16 1.2   1.9   22      3.1 e1.2 37  28  279  132  13    0.72 1.3  
17 0.78 2.6   14      e2.7 e1.3 37  26  214  118  12    1.8   0.73
18 0.58 38      15      e2.1 e1.5 36  25  202  103  12    1.3   0.46
19 0.57 7.7   11      e1.7 1.7 35  25  174  89  9.8 2.3   0.37
20 0.50 4.4   18      e1.5 22    39  41  267  81  9.0 0.86 0.33
 
21 0.42 2.8   7.5   e1.2 26    33  93  698  93  22    0.66 0.27
22 0.35 2.4   8.6   e1.1 36    29  78  811  83  11    0.62 0.17
23 0.46 2.4   8.2   e1.1 93    30  63  710  68  7.7 0.56 0.11
24 0.64 2.2   6.4   e1.1 104    82  61  420  63  5.7 1.4   0.06
25 1.6   1.7   5.6   e1.1 63    126  93  307  56  4.8 2.3   0.00
 
26 1.4   1.5   4.7   e1.2 57    143  86  250  50  3.7 1.5   0.00
27 0.97 1.3   4.9   e1.2 49    159  73  214  46  3.3 4.5   0.07
28 0.89 1.3   9.6   e1.2 45    149  68  183  43  2.8 2.8   0.15
29 0.82 1.1   7.7   e1.2 38    195  58  158  39  2.4 3.2   0.11
30 0.79 1.2   6.0   e1.2 ---    176  55  510  36  2.2 1.6   0.06
 
31 0.76 ---      5.8   e1.2 ---    170  ---  1130  ---  2.1 1.1   ---     

TOTAL 24.33 159.71 708.46 75.7 555.7 3117 1922 8147 5113 548.5 78.55 13.51
MEAN 0.78 5.32 22.9 2.44 19.2 101 64.1 263 170 17.7 2.53 0.45
MAX 8.5 38 159 5.2 104 316 150 1130 921 46 17 1.5
MIN 0.00 0.81 0.96 1.1 1.1 29 25 31 36 2.1 0.56 0.00
CFSM 0.01 0.07 0.29 0.03 0.25 1.29 0.82 3.38 2.19 0.23 0.03 0.01
IN. 0.01 0.08 0.34 0.04 0.27 1.49 0.92 3.90 2.45 0.26 0.04 0.01
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1926 - 2004, BY WATER YEAR (WY)
MEAN 23.0 54.0 54.2 40.2 76.1 98.3 104 102 94.1 54.9 33.4 27.1
MAX 119 246 261 154 245 292 309 263 257 322 383 337
(WY) 1927 1986 1983 1993 2001 1993 1993 2004 1993 1983 1987 1980
MIN 0.22 1.43 0.93 0.07 0.01 5.84 6.53 11.4 9.97 1.52 0.51 0.23
(WY) 1934 1998 1998 2003 2003 2003 2003 1931 1930 1988 1931 2003

SUMMARY STATISTICS FOR 2003 CALENDAR YEAR FOR 2004 WATER YEAR WATER YEARS 1926 - 2004
ANNUAL TOTAL 7980.11   20463.46  
ANNUAL MEAN 21.9     55.9     63.3        
HIGHEST ANNUAL MEAN 151            1993
LOWEST ANNUAL MEAN 13.4         1931
HIGHEST DAILY MEAN 714            May 11 1130            May 31 2520            Jul 3 1983
LOWEST DAILY MEAN 0.00       A 0.00       B 0.00       C
ANNUAL SEVEN-DAY MINIMUM 0.00       Sep 5 0.03       Oct 5 0.00       Sep 5 2003
MAXIMUM PEAK FLOW 1270            May 31 3500            Jul 2 1983
MAXIMUM PEAK STAGE 10.62       May 31 15.80   D Jul 2 1983
ANNUAL RUNOFF (CFSM) 0.281 0.720 0.815    
ANNUAL RUNOFF (INCHES) 3.82   9.80   11.08      
10 PERCENT EXCEEDS 59        158        157           
50 PERCENT EXCEEDS 1.9     5.8     26           
90 PERCENT EXCEEDS 0.01   0.51   1.4        

A - Many days.

B - Oct. 8, 9, 10, Sept. 25, 26.

C - At times in several years.

D - Present datum.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data