Station list     Available data
ILLINOIS RIVER BASIN


05536358       CALUMET RIVER BELOW O'BRIEN LOCK AND DAM AT CHICAGO, IL

 

LOCATION.-- Lat 41°38'53", long 87°33'50" (NAD of 1927), in SE1/4SE1/4 sec.36, T.37 N., R.14 E., Cook County, Hydrologic Unit 07120003, on right bank, 0.7 mi downstream of 130th Street in Chicago, and 1100 ft below the downstream lock gates at the Thomas J. O'Brien Lock and Dam, and at mile 6.9.
 

DRAINAGE AREA.-- Indeterminate.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1996 to cuurent year.
 

GAGE.-- Water stage recorder, acoustical flowmeter, and phone telemeter. Datum of gage is 579.48 ft above NGVD of 1929 (Chicago City datum).
 

REMARKS.-- This gaging station provides flow data to determine Illinois' diversion of Lake Michigan water. A U.S. Supreme Court Decree limits Illinois' diversion to an average of 3,200 ft3/s. Illinois' diversion includes water diverted from the lake for domestic water supply, for navigation, and water-quality improvement in the Chicago Sanitary and Ship Canal system, and stormwater runoff from a 673 mi2 diverted watershed area. Estimated daily discharges determined from regression equations between USGS mean daily discharges and mean daily discharges for the Obrien Lock and Dam as reported by the Metropolitan Water Reclamation District.
 

EXTREMES FOR PERIOD OF RECORD.-- --Maximum daily discharge, 1069 ft3/s (estimated), June 21,1997; mimimum daily, -769 ft3/s, Feb. 21, 1997, due to regulation to prevent flooding.
 

REMARKS FOR CURRENT YEAR.--Records fair 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 34  104    -43    17      10      74    19      215  -37    214  157  30   
2 157  138    -40    95      53      45    -8.6   222  50    210  14  214   
3 107  75    21    49      84      67    -0.04 150  182    109  71  69   
4 31  73    96    52      -12      -3.4 10      221  -24    113  132  120   
5 130  50    46    84      -42      86    73      211  -67    22  279  25   
 
6 171  39    -35    -0.13 65      90    35      123  -60    -65  291  136   
7 153  19    62    1.7   -0.83 -42    47      265  -58    92  378  66   
8 126  -15    25    -40      27      117    39      291  80    91  179  -5.8
9 122  73    -40    38      35      e30    -9.6   149  -2.4 74  192  56   
10 190  57    69    -17      27      e38    -56      80  166    28  391  101   
 
11 120  -25    -53    -44      15      e31    45      304  18    47  242  213   
12 119  46    58    48      -12      e33    14      340  80    139  298  85   
13 149  68    70    16      57      e34    -4.3   286  118    204  360  253   
14 93  25    89    128      50      e31    44      191  98    229  402  e144   
15 156  -6.9 6.5 -18      68      e33    58      356  171    114  401  e220   
 
16 141  18    71    44      96      e32    -9.3   204  60    114  470  e205   
17 171  23    144    90      125      e31    14      95  -44    76  534  e218   
18 117  24    294    8.6   -41      e34    34      162  6.3 215  436  e232   
19 200  77    110    18      21      e61    9.9   346  40    210  432  e275   
20 158  24    25    -20      11      e153    27      158  189    95  378  e228   
 
21 143  -16    24    113      57      e30    71      116  238    145  348  e267   
22 39  34    -11    42      152      e33    40      98  137    92  447  e211   
23 51  16    55    e30      77      e35    -2.9   81  129    197  375  e148   
24 42  -33    71    e28      43      e33    100      106  90    176  283  e146   
25 -23  -59    38    e30      6.0   e32    94      137  25    136  327  e169   
 
26 -19  12    3.2 e33      47      e31    0.45 60  109    103  213  e127   
27 18  -7.8 30    e28      52      e107    56      52  62    93  286  e273   
28 131  34    26    e29      98      e33    76      73  -51    111  179  e275   
29 90  -83    81    28      ---      e32    23      165  24    253  -12  e251   
30 61  55    77    -17      ---      e31    102      177  88    165  123  e132   
 
31 67  ---    42    5.4   ---      e34    ---      92  ---    150  110  ---   

TOTAL 3245 838.3 1411.7 899.57 1168.17 1405.6 940.61 5526 1816.9 3952 8716 4883.2
MEAN 105 27.9 45.5 29.0 41.7 45.3 31.4 178 60.6 127 281 163
MAX 200 138 294 128 152 153 102 356 238 253 534 275
MIN -23 -83 -53 -44 -42 -42 -56 52 -67 -65 -12 -5.8
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1997 - 2003, BY WATER YEAR (WY)
MEAN 197 55.7 49.6 47.7 43.8 52.0 66.7 95.6 217 334 370 302
MAX 490 81.0 68.4 79.5 63.8 95.5 107 178 435 559 567 451
(WY) 1997 2001 2000 1997 1998 1997 1998 2003 1997 1998 1998 1998
MIN 74.6 27.9 22.1 -7.60 -6.56 5.37 -2.78 11.6 60.6 127 259 163
(WY) 2001 2003 2002 2002 2002 2002 2002 2002 2003 2003 2001 2003

SUMMARY STATISTICS FOR 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1997 - 2003
ANNUAL TOTAL 32460.60 34803.05
ANNUAL MEAN 88.9   95.4   153         
HIGHEST ANNUAL MEAN 238          1997
LOWEST ANNUAL MEAN 88.8       2002
HIGHEST DAILY MEAN 774          Aug 23 534          Aug 17 1069      A Jun 21 1997
LOWEST DAILY MEAN -248          Jun 17 -83          Nov 29 -769      B Feb 21 1997
ANNUAL SEVEN-DAY MINIMUM -75          Apr 13 -17          Nov 23 -98      B Feb 21 1997
10 PERCENT EXCEEDS 302      234      431         
50 PERCENT EXCEEDS 46      70      83         
90 PERCENT EXCEEDS -51      -9.4   4.7      

A - Estimated due to regulation.

B - Due to regulation to prevent flooding.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data