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.

 

EXTREMES FOR CURRENT YEAR.--Maximum daily discharge, 1,370 ft3/s, Aug. 6, minimum daily, -2,450 ft3/s, Feb. 21, 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 1996 TO SEPTEMBER 1997
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1e371 e197 e102 244 450 794 93 372 386 878 910 843 
2e354 e244 e220 193 430 342 178 517 344 873 881 839 
3e314 e259 231 176 349 217 223 533 372 908 737 830 
4e352 e237 552 233 117 304 155 387 385 862 986 793 
5e470 e251 800 264 358 452 181 442 425 842 1150 836 
 
6e726 e669 347 306 583 341 141 386 554 846 1370 852 
7e311 e709 340 342 546 261 149 318 391 754 886 833 
8e347 e205 434 216 416 454 178 539 351 768 856 791 
9e343 e237 226 224 277 348 249 362 427 864 906 771 
10e311 e213 164 326 368 429 231 369 373 852 897 885 
 
11e336 e205 137 260 554 282 220 400 453 846 785 796 
12e371 e188 281 512 263 257 389 374 547 883 684 919 
13e378 e229 354 466 110 228 266 335 520 901 901 905 
14e349 e205 184 411 320 348 270 359 429 975 874 856 
15e378 e152 272 394 502 304 316 344 444 964 804 757 
 
16e585 e213 170 551 509 379 295 394 462 950 -711 1130 
17e437 e171 323 567 401 371 300 375 328 915 595 804 
18e326 e188 228 423 315 236 260 492 378 957 564 1250 
19e376 e152 362 333 430 219 292 749 408 998 534 909 
20e361 e123 334 555 449 123 257 354 706 1040 745 977 
 
21e295 e180 182 393 -2450 163 267 360 1310 777 925 904 
22e595 e143 273 386 124 138 323 361 785 829 895 678 
23e264 e171 302 215 338 74 340 403 963 873 802 616 
24e298 e133 311 80 383 328 297 366 1190 868 808 586 
25e311 e162 292 306 340 377 293 402 709 873 842 780 
 
26e358 e162 251 292 141 119 335 340 930 836 836 850 
27e365 e229 319 418 365 137 326 275 853 830 807 843 
28e309 e309 376 537 360 96 269 305 838 1020 836 785 
29e338 e112 328 460 --- 189 413 450 841 857 851 851 
30e245 e102 385 450 --- 98 359 511 676 851 774 731 
 
31e267 --- 301 372 --- 129 --- 418 --- 894 855 --- 

TOTAL1144167509381109057348853778651259217778273842458525200
MEAN369225303352262275262406593883793840
MAX7267098005675837944137491310104013701250
MIN24510210280-24507493275328754-711586

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1997 - 1997, BY WATER YEAR (WY)
MEAN369225303352262275262406593883793840
MAX369225303352262275262406593883793840
(WY)199719971997199719971997199719971997199719971997
MIN369225303352262275262406593883793840
(WY)199719971997199719971997199719971997199719971997

SUMMARY STATISTICSFOR 1997 WATER YEAR
ANNUAL TOTAL169766     
ANNUAL MEAN465     
HIGHEST DAILY MEAN1370         Aug 6
LOWEST DAILY MEAN-2450  A    Feb 21
ANNUAL SEVEN-DAY MINIMUM-108  A    Feb 21
10 PERCENT EXCEEDS876     
50 PERCENT EXCEEDS373     
90 PERCENT EXCEEDS177     

A - Due to regulation to prevent flooding.



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data