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 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 62    54      4.0 13      -17    31    83      132    111  e142  499  291   
2 186    9.2   18    31      17    40    7.5   23    -202  e136  588  374   
3 134    -43      59    9.9   -18    -6.5 -82      60    12  e154  625  220   
4 122    20      -2.3 57      21    -30    -56      -26    415  222  614  266   
5 235    32      -16    -7.8   38    -21    -56      -124    -64  288  453  262   
 
6 91    -5.7   130    -96      40    21    54      112    -128  169  393  149   
7 130    -45      35    52      -70    16    31      64    e184  314  392  140   
8 152    29      1.7 0.08 -58    -34    33      77    e176  200  349  238   
9 67    52      56    -45      -17    -90    -37      35    e185  322  481  136   
10 148    84      -17    5.4   -50    -34    -12      -53    e53  278  354  190   
 
11 135    103      31    -5.5   1.8 22    -59      -73    e316  239  388  229   
12 114    -73      -16    -26      -14    -12    15      19    e63  373  340  225   
13 23    1.1   -4.6 -33      19    -8.7 -53      -82    e63  117  595  200   
14 15    270      -25    -32      34    -58    -101      25    e32  144  234  164   
15 21    46      75    -40      36    -20    0.12 51    e65  297  335  225   
 
16 64    68      70    -68      34    51    -100      93    e78  263  339  165   
17 56    -166      48    -17      18    41    -90      11    -248  117  217  173   
18 147    58      18    -15      -6.6 61    -116      60    -60  245  293  38   
19 43    -13      42    11      30    63    -67      16    -14  250  438  277   
20 101    50      34    18      26    21    98      45    78  350  353  195   
 
21 -20    72      32    -23      -19    -22    -8.0   103    48  260  169  194   
22 278    92      67    22      -18    13    57      21    -119  141  26  144   
23 401    75      -9.1 6.0   33    43    103      -3.6 148  314  774  129   
24 356    127      -7.5 42      -23    12    24      -93    328  296  290  123   
25 19    31      11    -34      -89    55    -49      152    e198  281  349  165   
 
26 2.3 107      33    2.3   -67    69    -13      -1.4 e53  273  320  97   
27 38    41      31    -42      -39    35    207      -130    e92  81  350  117   
28 50    0.35 15    -66      -26    7.6 -2.0   -26    e104  212  374  89.0
29 106    76      -18    52      ---    -34    83      -16    e101  230  347  38.0
30 253    17      21    -51      ---    -51    22      -37    e106  387  367  16   
 
31 73    ---      -30    44      ---    -14    ---      -73    ---  447  310  ---   

TOTAL 3602.3 1168.95 686.2 -235.62 -183.8 166.4 -83.38 361.0 2174 7542 11956 5269.0
MEAN 116 39.0 22.1 -7.60 -6.56 5.37 -2.78 11.6 72.5 243 386 176
MAX 401 270 130 57 40 69 207 152 415 447 774 374
MIN -20 -166 -30 -96 -89 -90 -116 -130 -248 81 26 16
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1997 - 2002, BY WATER YEAR (WY)
MEAN 212 60.4 50.3 50.8 44.1 53.1 72.6 81.8 244 368 385 326
MAX 490 81.0 68.4 79.5 63.8 95.5 107 150 435 559 567 451
(WY) 1997 2001 2000 1997 1998 1997 1998 1997 1997 1998 1998 1998
MIN 74.6 39.0 22.1 -7.60 -6.56 5.37 -2.78 11.6 72.5 146 259 176
(WY) 2001 2002 2002 2002 2002 2002 2002 2002 2002 2001 2001 2002

SUMMARY STATISTICS FOR 2001 CALENDAR YEAR FOR 2002 WATER YEAR WATER YEARS 1997 - 2002
ANNUAL TOTAL 41333.28 32423.05
ANNUAL MEAN 113      88.8   163       
HIGHEST ANNUAL MEAN 238        1997
LOWEST ANNUAL MEAN 88.8     2002
HIGHEST DAILY MEAN 766          Aug 31 774          Aug 23 1069    A Jun 21 1997
LOWEST DAILY MEAN -171          Jul 14 -248          Jun 17 -769    B Feb 21 1997
ANNUAL SEVEN-DAY MINIMUM -0.50     Nov 2 -75          Apr 13 -98    B Feb 21 1997
10 PERCENT EXCEEDS 284      314      453       
50 PERCENT EXCEEDS 75      43      85       
90 PERCENT EXCEEDS -8.1   -50      8.2    

A - Estimated by regression.

B - Due to regulation to prevent flooding.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data