Station list     Available data
ILLINOIS RIVER BASIN


05536123       CHICAGO RIVER AT COLUMBUS DRIVE AT CHICAGO, IL

 

LOCATION.-- Lat 41°53'18", long 87°37'16" (NAD of 1927), in NE1/4SW1/4 sec.10, T.39 N., R.14 E., Cook County, Hydrologic Unit 07120003, on left downstream side of bridge within the Columbus Drive bridge structure in Chicago, 0.5 mi downstream from Chicago River Lock and Dam.

 

DRAINAGE AREA.-- Indeterminate.

 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

 

DISCHARGE: October 1996 to current 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 relations between this site and flow data from the Metropolitan Water Reclamation District of Greater Chicago-Chicago River Controlling Works.

 

EXTREMES FOR PERIOD OF RECORD.-- Maximum daily discharge, 1,370 ft3/s, Aug. 6, 1997, minimum daily, -2,450 ft3/s, Feb. 21, 1997, due to regulation to prevent flooding.

 

REMARKS FOR CURRENT YEAR.--Records good except those for estimated daily discharges, which are fair.

Discharge, cubic feet per second, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1577 430 54   -2.8157     91   154 288 448 658 672 729 
2636 298 9.060   62     151   164 230 533 648 659 820 
3715 303 61   161   -61     72   120 224 397 527 616 691 
4759 303 115   165   81     -44   160 272 376 600 316 622 
5628 230 207   372   96     -41   119 261 377 580 1000 652 
 
6753 214 180   236   -89     73   76 330 409 560 1160 606 
7899 243 159   624   112     91   70 242 395 840 440 -87 
8873 289 3.5571   140     212   93 408 347 726 746 466 
9974 313 61   491   42     109   422 285 325 657 720 522 
10791 358 98   94   79     171   104 205 475 738 872 417 
 
11775 307 187   -135   422     -72   296 304 530 779 902 536 
12767 299 221   101   295     349   162 285 561 808 826 505 
13586 233 -162   236   225     58   360 243 613 990 877 629 
14358 239 -168   -40   174     282   150 141 424 987 822 611 
15365 250 156   153   -0.19173   31 138 619 981 819 449 
 
16367 309 178   38   -59     24   348 301 579 1010 841 470 
17365 262 50   120   101     18   254 254 572 965 806 499 
18386 102 129   268   129     192   157 553 501 990 891 459 
19381 162 e103   129   -25     35   90 389 692 860 820 525 
20360 57 e78   -73   -2.4  243   188 332 501 912 853 450 
 
21334 -22 e52   112   57     1.5192 278 536 873 872 520 
22323 75 e27   9.317     193   188 355 579 904 804 508 
23301 144 e1   106   117     141   211 212 581 1010 791 464 
24283 110 e-25   137   130     67   173 251 556 790 1030 465 
25284 65 e-50   176   137     92   188 273 669 696 896 490 
 
26325 88 e-76   148   123     189   280 303 510 693 855 421 
27353 90 e-101   81   136     213   207 308 476 837 743 460 
28326 44 -127   53   121     122   144 400 766 858 e378 707 
29339 72 80   258   ---     120   89 639 660 660 e780 840 
30314 231 41   -7.3---     221   228 282 778 730 e815 600 
 
31387 --- -20   51   ---     491   --- 383 --- 693 e613 --- 

TOTAL1588460981521.54692.22716.414037.55418936915785245602423516046
MEAN51220349.115197.0130181302526792782535
MAX97443022162442249142263977810101160840
MIN283-22-168-135-89-7231138325527316-87

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1997 - 1998, BY WATER YEAR (WY)
MEAN441214176252180203221354559838787687
MAX512225303352262275262406593883793840
(WY)199819971997199719971997199719971997199719971997
MIN36920349.115197.0130181302526792782535
(WY)199719981998199819981998199819981998199819981998

SUMMARY STATISTICSFOR 1997 CALENDAR YEARFOR 1998 WATER YEARWATER YEARS 1997 - 1998
ANNUAL TOTAL165697.5    130362.61    
ANNUAL MEAN454       357         
HIGHEST ANNUAL MEAN
LOWEST ANNUAL MEAN
HIGHEST DAILY MEAN1370           Aug 61160             Aug 61370         Aug 6 1997
LOWEST DAILY MEAN-2450    A    Feb 21-168             Dec 14-2450      AFeb 21 1997
ANNUAL SEVEN-DAY MINIMUM-108           Feb 21-50      B    Dec 22-108      AFeb 21 1997
10 PERCENT EXCEEDS882       811         853         
50 PERCENT EXCEEDS375       296         352         
90 PERCENT EXCEEDS100       40         91         

A - Due to regulation to prevent flooding.

B - Estimated by regression.



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data