Station list     Available data
ROCK RIVER BASIN


05439000       SOUTH BRANCH KISHWAUKEE RIVER AT DE KALB, IL

 

LOCATION.-- Lat 41°55'52", long 88°45'35" (NAD of 1983), 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 (831.74 ft NAVD 1988). 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 2004 TO SEPTEMBER 2005
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 0.34 23      15    8.6 16  64  36  16  11    3.9   0.24 0.00
2 0.21 16      12    17    15  56  38  15  10    3.0   0.11 0.00
3 0.11 4.6   9.7 14    21  53  37  14  10    2.2   0.05 0.00
4 0.12 8.2   9.1 11    30  55  35  12  15    6.8   e0.02 0.00
5 0.10 4.9   9.7 7.5 70  52  35  12  20    4.0   e0.02 0.00
 
6 0.06 3.3   22    7.3 79  51  32  12  13    2.9   e0.02 0.00
7 0.01 2.7   47    7.9 118  73  31  12  11    2.1   e0.02 0.00
8 0.41 2.9   51    6.3 110  77  27  11  10    1.4   e0.02 0.00
9 0.27 2.0   44    5.9 82  67  25  11  9.9 1.3   e0.02 0.00
10 0.03 1.6   35    6.3 63  65  24  11  9.2 1.4   0.04 0.00
 
11 0.00 1.2   28    8.4 53  59  22  36  8.2 0.65 0.46 0.00
12 0.00 1.0   23    38    51  53  40  35  7.7 0.48 7.4   0.00
13 0.00 1.1   18    193    78  43  33  26  7.5 0.42 2.4   0.00
14 0.52 0.93 15    150    245  39  26  24  7.2 0.29 1.3   0.02
15 0.15 0.80 14    e130    199  35  25  20  6.7 0.26 0.79 0.05
 
16 0.23 0.91 e11    e100    158  35  24  17  5.8 0.32 0.56 0.16
17 0.18 0.84 e10    e66    127  35  25  16  5.7 0.25 0.38 0.06
18 0.12 1.5   e8.0 e54    103  34  25  15  5.2 0.19 6.1   0.00
19 0.08 9.9   e6.6 e46    89  35  24  40  4.9 0.08 2.9   0.28
20 0.03 4.6   e5.8 e35    88  30  24  59  4.5 2.6   33      0.39
 
21 0.03 2.6   e5.0 e30    79  27  21  38  4.3 3.0   4.1   0.14
22 1.1   1.7   e4.5 e26    66  28  31  28  4.3 1.8   1.8   0.04
23 35      1.6   e4.2 e22    60  31  29  25  4.0 1.2   1.1   0.00
24 4.6   2.7   e3.9 e19    61  29  24  20  3.8 1.0   0.62 0.49
25 1.4   4.4   e3.8 e17    57  39  25  18  3.6 1.3   0.25 0.66
 
26 0.95 3.4   e3.8 e16    51  41  24  17  3.2 2.4   0.24 0.57
27 0.53 32      e4.0 e15    51  45  22  16  3.1 3.0   0.11 0.49
28 0.32 25      e4.3 e16    72  48  17  16  2.8 1.2   0.00 0.25
29 1.2   18      4.7 17    ---  45  16  14  2.5 0.79 0.00 0.08
30 11      16      5.9 18    ---  44  17  13  4.6 0.58 0.00 0.06
 
31 2.2   ---      11    17    ---  43  ---  11  ---    0.38 0.00 ---     

TOTAL 61.30 199.38 449.0 1125.2 2292 1431 814 630 218.7 51.19 64.07 3.74
MEAN 1.98 6.65 14.5 36.3 81.9 46.2 27.1 20.3 7.29 1.65 2.07 0.12
MAX 35 32 51 193 245 77 40 59 20 6.8 33 0.66
MIN 0.00 0.80 3.8 5.9 15 27 16 11 2.5 0.08 0.00 0.00
CFSM 0.03 0.09 0.19 0.47 1.05 0.59 0.35 0.26 0.09 0.02 0.03 0.00
IN. 0.03 0.10 0.21 0.54 1.10 0.69 0.39 0.30 0.10 0.02 0.03 0.00
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1926 - 2005, BY WATER YEAR (WY)
MEAN 22.4 52.6 53.1 40.1 76.3 96.7 101 99.9 91.6 53.3 32.5 26.3
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 7.29 1.52 0.51 0.12
(WY) 1934 1998 1998 2003 2003 2003 2003 1931 2005 1988 1931 2005

SUMMARY STATISTICS FOR 2004 CALENDAR YEAR FOR 2005 WATER YEAR WATER YEARS 1926 - 2005
ANNUAL TOTAL 20280.64   7339.58      
ANNUAL MEAN 55.4     20.1         62.1        
HIGHEST ANNUAL MEAN 151            1993
LOWEST ANNUAL MEAN 13.4         1931
HIGHEST DAILY MEAN 1130            May 31 245                Feb 14 2520            Jul 3 1983
LOWEST DAILY MEAN 0.00       A 0.00           B 0.00       C
ANNUAL SEVEN-DAY MINIMUM 0.06       Sep 24 0.00           Aug 28 0.00       Sep 5 2003
MAXIMUM PEAK FLOW 273        D     Feb 14 3500            Jul 2 1983
MAXIMUM PEAK STAGE 5.63   E     Jan 17 15.80   F Jul 2 1983
ANNUAL RUNOFF (CFSM) 0.713 0.259     0.799    
ANNUAL RUNOFF (INCHES) 9.71   3.51       10.85      
10 PERCENT EXCEEDS 154        53            155           
50 PERCENT EXCEEDS 8.1     8.4         25           
90 PERCENT EXCEEDS 0.36   0.05       1.2        

A - Sept. 25, 26, Oct. 11, 12, 13.

B - Many days.

C - At times in several years.

D - Gage height, 5.52 ft.

E - Backwater from ice.

F - Present datum.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data