Station list     Available data
ILLINOIS RIVER BASIN


05528000       DES PLAINES RIVER NEAR GURNEE, IL



LOCATION.-- Lat 42°20'39", long 87°56'18", in SE1/4SW1/4 sec.27, T.45 N., R.11 E., Lake County, Hydrologic Unit 07120004, on left bank at upstream side of bridge on State Highway 120, 2.5 mi southwest of Gurnee, and at mile 94.2.

DRAINAGE AREA.-- 232 mi2.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1945 to September 1958, October 1968 to current year.
 

STAGE: Water years 1994-2000.
 

PARTIAL RECORD: Annual maximum, water years 1960-68.
SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1977-91.
PRECIPITATION: October 1999 to current year.

REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-76-1: 1960(M), 1962(M). WDR IL-77-1: 1971.

GAGE.-- Water-stage recorder, phone telemeter, and rain gage. Datum of gage is 650.30 ft above sea level (U.S. Army Corps of Engineers bench mark). Prior to May 26, 1946, nonrecording gage. May 27, 1946, to Sept. 30, 1958, water-stage recorder. Dec. 17, 1959, to September 1968, crest-stage gage. October 1968 to September 1998, water stage recorder at site 800 ft upstream at same datum.

REMARKS.-- Effluent from sewage-treatment plants, 0.5 mi upstream. Collection, computation, and publication of precipitation data do not necessarily conform to standards used by the National Weather Service. Precipitation data could be subject to error for days with freezing and/or thawing of precipitation.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,530 ft3/s, Sept. 27, 1986, gage height, 11.95 ft; no flow Sept. 26 to Oct. 19, 1956, and part of each day Aug. 27-30, Sept. 1, 2, 1970.
PRECIPITATION: Maximum, 2.44 in., May 18, 2000.

REMARKS FOR CURRENT YEAR.-- Records good except for period Feb. 25 to June 16, which are fair. Effluent from sewage-treatment plants averaged about 52.4 ft3/s. The maximum monthly effluent was 75.2 ft3/s in June, and the minimum was 39.0 ft3/s in November.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 120  46  44  48  52  471  124  600  754  219  177  51 
2 95  43  43  47  52  451  122  515  897  199  170  49 
3 92  45  49  48  52  418  116  436  1020  427  142  49 
4 98  45  47  60  52  370  111  357  1080  417  114  51 
5 76  44  115  59  53  312  108  276  1200  411  106  50 
 
6 70  44  113  58  54  247  102  218  1250  393  120  48 
7 64  44  102  57  53  201  120  188  1180  355  137  49 
8 57  44  92  56  52  171  154  165  1060  299  133  50 
9 52  43  83  61  53  156  172  181  927  238  116  49 
10 50  44  77  68  56  146  182  240  795  356  96  47 
 
11 45  45  72  69  57  138  197  305  723  376  83  54 
12 39  44  69  69  57  128  207  354  746  332  76  114 
13 38  44  65  70  57  119  204  367  1190  288  73  127 
14 35  43  55  67  59  113  191  370  2000  284  68  180 
15 33  43  52  67  58  110  177  368  2560  317  65  168 
 
16 36  41  68  64  60  119  167  365  2640  332  64  150 
17 34  41  80  61  60  116  168  359  2370  315  84  127 
18 29  40  75  60  62  108  157  647  1960  267  76  102 
19 36  42  72  59  67  108  211  1210  1590  197  77  86 
20 26  45  67  58  68  183  623  1340  1320  154  74  84 
 
21 35  45  48  57  73  212  1020  1410  1090  132  69  80 
22 22  44  60  56  115  235  1130  1560  899  119  64  147 
23 38  45  59  55  202  231  1100  1550  748  107  65  330 
24 30  46  57  54  360  224  1090  1410  711  100  67  336 
25 29  46  51  55  472  220  1100  1230  837  89  65  344 
 
26 30  46  52  54  508  199  1090  1040  641  83  59  336 
27 44  46  51  50  510  185  1030  932  503  78  56  329 
28 43  45  49  51  500  176  926  877  399  80  55  320 
29 44  46  49  52  484  163  809  808  325  79  55  304 
30 46  43  49  53  ---  147  697  736  263  82  53  279 
 
31 47  ---  50  54  ---  134  ---  707  ---  145  53  --- 

TOTAL 1533 1322 2015 1797 4358 6311 13605 21121 33678 7270 2712 4490
MEAN 49.5 44.1 65.0 58.0 150 204 454 681 1123 235 87.5 150
MAX 120 46 115 70 510 471 1130 1560 2640 427 177 344
MIN 22 40 43 47 52 108 102 165 263 78 53 47


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1977 - 2000, BY WATER YEAR (WY)
MEAN 125 180 240 170 249 443 511 308 224 155 132 136
MAX 1011 785 865 514 583 1510 1395 847 1123 599 648 756
(WY) 1987 1986 1983 1993 1999 1979 1993 1996 2000 1993 1978 1986
MIN 16.6 16.5 12.7 10.6 11.9 61.8 79.9 31.3 23.1 23.9 15.0 18.3
(WY) 1977 1977 1977 1977 1977 1977 1977 1977 1977 1977 1977 1977

SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1977 - 2000
ANNUAL TOTAL 79872  100212         
ANNUAL MEAN 219  274          239     
HIGHEST ANNUAL MEAN 428      1993
LOWEST ANNUAL MEAN 26.8   1977
HIGHEST DAILY MEAN 1450      Apr 24-26 2640              Jun 16 3470      Sep 27 1986
LOWEST DAILY MEAN 15      Aug 10 22      A     Oct 22 7.5   Feb 6 1977
ANNUAL SEVEN-DAY MINIMUM 27      Aug 5 30              Oct 20 7.9   Jan 31 1977
INSTANTANEOUS PEAK FLOW 2690              Jun 16 3530      Sep 27 1986
INSTANTANEOUS PEAK STAGE 10.30         Jun 16 11.95 Sep 27 1986
INSTANTANEOUS LOW FLOW 10      A     Oct 22
10 PERCENT EXCEEDS 634  849          583     
50 PERCENT EXCEEDS 77  101          123     
90 PERCENT EXCEEDS 30  44          43     
A - During maintenance on sewage-treatment plant upstream.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data