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, Aug. 7, Sept. 20, 21, 1988, Aug. 24, 1991, Sept. 11, 24, 1999 and several days in 2003.

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 2002 TO SEPTEMBER 2003
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 0.82 1.7   e0.25 e0.28 e0.01 e0.02 2.8   270  80    7.3 18      0.26
2 6.7   1.7   e0.22 e0.25 e0.01 e0.02 5.2   171  60    6.8 7.2   0.30
3 1.7   1.9   e0.21 e0.21 e0.02 e0.02 3.5   112  52    6.9 2.9   0.14
4 19      1.7   e0.21 e0.19 e0.02 e0.02 9.7   94  43    7.0 2.6   0.04
5 5.0   2.3   e0.22 e0.18 e0.01 e0.02 9.2   229  36    11    2.0   0.00
 
6 2.7   2.9   e0.24 e0.16 e0.01 e0.02 6.3   173  34    8.2 1.9   0.00
7 2.2   2.7   e0.27 e0.14 e0.01 e0.04 8.4   130  34    15    1.4   0.00
8 1.4   2.5   e0.29 e0.12 e0.01 e0.09 8.0   105  36    46    0.78 0.00
9 1.8   2.6   e0.30 e0.10 e0.01 e0.26 7.3   390  30    56    0.56 0.00
10 0.58 2.8   e0.35 e0.08 0.00 e0.46 6.9   333  26    61    0.51 0.00
 
11 0.81 2.8   e0.39 e0.07 0.00 0.82 5.6   714  25    42    0.66 0.00
12 0.85 3.1   e0.42 e0.06 0.00 11      5.9   457  22    47    0.48 0.88
13 0.89 3.5   e0.47 e0.05 e0.01 13      5.9   289  21    32    0.24 0.83
14 1.1   3.5   e0.52 e0.04 e0.01 17      5.9   224  20    21    0.16 0.65
15 1.4   0.89 e0.62 e0.03 e0.01 18      6.1   184  17    31    0.17 0.29
 
16 1.0   0.94 e1.0   e0.03 e0.01 18      6.6   154  15    12    0.19 0.11
17 0.87 1.1   1.9   e0.02 e0.01 19      8.9   131  14    7.9 0.17 0.02
18 1.4   1.5   8.1   e0.02 e0.01 13      4.2   113  14    6.3 0.09 0.00
19 1.7   1.9   5.9   e0.02 e0.01 11      4.8   105  20    5.8 0.08 0.00
20 1.7   2.0   2.4   e0.01 e0.01 15      5.2   155  19    4.9 0.09 0.00
 
21 1.6   2.0   1.6   e0.01 e0.01 7.4   3.4   127  14    9.1 0.11 0.01
22 1.5   1.8   1.2   e0.01 e0.01 3.6   2.5   106  13    17    0.56 0.19
23 1.3   e1.1   0.94 e0.01 e0.01 2.2   2.2   94  12    8.0 0.24 0.00
24 1.4   e0.90 0.76 e0.01 0.01 1.6   1.9   82  11    4.8 0.10 0.06
25 4.1   e0.76 0.77 e0.01 e0.02 7.7   1.7   73  11    3.2 0.01 0.00
 
26 2.1   e0.64 0.70 e0.01 e0.02 3.0   1.3   63  13    2.2 0.00 0.79
27 1.6   e0.54 0.57 0.0   e0.02 2.1   3.2   58  11    1.8 0.00 1.8  
28 1.5   e0.45 e0.50 e0.01 e0.02 6.5   1.4   56  11    2.8 0.05 0.29
29 1.8   e0.37 e0.42 e0.01 ---      4.8   0.82 65  11    2.2 0.02 0.18
30 2.0   e0.28 e0.37 e0.01 ---      3.0   51      66  8.9 1.7 0.00 0.14
 
31 1.6   ---      e0.32 e0.01 ---      2.3   ---      111  ---    4.2 0.08 ---     

TOTAL 74.12 52.87 32.43 2.16 0.31 180.99 195.82 5434 733.9 492.1 41.35 6.98
MEAN 2.39 1.76 1.05 0.070 0.011 5.84 6.53 175 24.5 15.9 1.33 0.23
MAX 19 3.5 8.1 0.28 0.02 19 51 714 80 61 18 1.8
MIN 0.58 0.28 0.21 0.00 0.00 0.02 0.82 56 8.9 1.7 0.00 0.00
CFSM 0.03 0.02 0.01 0.00 0.00 0.08 0.08 2.26 0.31 0.20 0.02 0.00
IN. 0.04 0.03 0.02 0.00 0.00 0.09 0.09 2.60 0.35 0.24 0.02 0.00
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1926 - 2003, BY WATER YEAR (WY)
MEAN 23.6 55.6 55.2 41.4 77.9 98.2 105 97.3 91.7 56.1 34.4 27.9
MAX 119 246 261 154 245 292 309 221 257 322 383 337
(WY) 1927 1986 1983 1993 2001 1993 1993 1995 1993 1983 1987 1980
MIN 0.22 1.43 0.93 0.070 0.011 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 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1926 - 2003
ANNUAL TOTAL 18544.81 7247.03
ANNUAL MEAN 50.8   19.9   63.6      
HIGHEST ANNUAL MEAN 151          1993
LOWEST ANNUAL MEAN 13.4       1931
HIGHEST DAILY MEAN 1040          Jun 5 714          May 11 2520          Jul 3 1983
LOWEST DAILY MEAN 0.03     Sep 17 0.00     A 0.00     B
ANNUAL SEVEN-DAY MINIMUM 0.23     Dec 1 0.00     Sep 5 0.00     Sep 5 2003
MAXIMUM PEAK FLOW 760          May 11 3500          Jul 2 1983
MAXIMUM PEAK STAGE 8.35     May 11 15.80 C Jul 2 1983
ANNUAL RUNOFF (CFSM) 0.65 0.26 0.82    
ANNUAL RUNOFF (INCHES) 8.88 3.47 11.12    
10 PERCENT EXCEEDS 127      51      157         
50 PERCENT EXCEEDS 10      1.6   26         
90 PERCENT EXCEEDS 0.51 0.01 1.5      

A - Several days.

B - Aug. 7, Sept. 20, 21, 1988, Aug. 24, 1991, Sept. 11, 24, 1999 and several days in 2003.

C - Present datum.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data