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 1995-2002.

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, several days.

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, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
12.826   30 e13   12   50 47 87 83 26     3.3  1.5  
22.622   26 e12   10   e47 51 122 80 25     0.451.6  
32.221   27 e13   e9.644 45 104 84 20     0.171.1  
45.020   26 14   e9.052 40 92 683 19     20     1.0  
510   18   26 15   e8.458 41 87 1040 18     17     1.7  
 
63.917   25 15   8.147 41 85 732 18     6.9  0.89
73.416   23 14   8.946 61 78 434 15     2.4  0.58
83.415   22 13   10   166 167 76 309 13     0.850.54
93.715   20 15   11   311 341 81 236 12     0.470.41
105.114   19 14   25   214 237 63 192 11     0.330.58
 
114.313   18 12   37   157 179 146 181 11     0.320.81
1212   11   20 12   38   134 148 608 153 8.9  1.1  0.54
1338   12   37 13   36   117 125 535 135 7.6  35     0.39
1437   16   38 12   37   104 114 360 123 6.3  25     0.56
1523   14   33 11   38   96 103 274 109 5.3  13     0.28
 
1616   14   30 9.041   78 92 267 98 4.1  8.4  0.05
1712   11   32 e8.638   76 82 293 91 2.7  4.4  0.03
1811   11   30 e8.235   71 77 227 81 2.5  2.2  1.7  
198.111   30 8.155   65 76 190 73 2.9  1.1  4.8  
207.311   27 8.8151   64 70 164 66 2.4  0.494.3  
 
218.210   24 9.6163   59 78 147 59 1.8  0.911.8  
2219   9.526 9.5129   54 72 136 56 1.2  93     2.4  
23169   10   29 11   109   e51 65 132 53 0.8041     1.1  
24147   32   25 11   96   e49 70 118 49 0.8627     0.72
25132   50   29 10   83   47 62 121 46 0.6214     0.55
 
2692   40   22 9.672   47 54 104 46 0.596.9  0.50
2762   37   23 9.264   47 66 100 41 2.5  5.2  0.41
2846   30   22 9.157   47 98 96 35 1.7  3.7  0.36
2936   30   19 8.8---   60 89 94 32 2.2  2.7  0.38
3032   33   16 8.8---   53 81 92 30 1.5  1.9  0.35
 
3129   ---   e14 9.5---   46 --- 90 --- 2.5  1.5  ---     

TOTAL983.0589.5788346.81391.02557287251695430246.97340.6931.93
MEAN31.7119.6525.4211.1949.6882.4895.73166.7181.07.96710.991.064
MAX169503815163311341608104026934.8
MIN2.29.5148.18.1444063300.590.170.03
CFSM0.410.250.330.140.641.061.232.152.330.100.140.01
IN.0.470.280.380.170.671.221.382.472.600.120.160.02

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1926 - 2002, BY WATER YEAR (WY)
MEAN24.3057.3056.9642.7680.40101.2108.094.7993.9157.3735.4528.84
MAX119246261154245292309221257322383337
(WY)192719861983199320011993199319951993198319871980
MIN0.221.430.934.106.1412.318.611.49.971.520.510.33
(WY)193419981998200019311996199619311930198819311988

SUMMARY STATISTICSFOR 2001 CALENDAR YEARFOR 2002 WATER YEARWATER YEARS 1926 - 2002
ANNUAL TOTAL19876.6720745.89
ANNUAL MEAN54.4656.8464.98    
HIGHEST ANNUAL MEAN151         1993
LOWEST ANNUAL MEAN13.4      1931
HIGHEST DAILY MEAN992         Feb 251040         Jun 52520         Jul 3 1983
LOWEST DAILY MEAN0.27    Sep 20.03    Sep 170.00    A
ANNUAL SEVEN-DAY MINIMUM0.35    Aug 270.38    Sep 110.03    Sep 30 1931
MAXIMUM PEAK FLOW1090         Jun 53500         Jul 2 1983
MAXIMUM PEAK STAGE9.86    Jun 515.80 BJul 2 1983
INSTANTANEOUS LOW FLOW0.00    Sep 16
ANNUAL RUNOFF (CFSM)0.700.730.84    
ANNUAL RUNOFF (INCHES)9.529.9311.36    
10 PERCENT EXCEEDS138     133     160         
50 PERCENT EXCEEDS26     25     28         
90 PERCENT EXCEEDS0.931.2  1.9      

A - Several days.

B - Present datum.



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Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data