Station list     Available data
ILLINOIS RIVER BASIN


05536215       THORN CREEK AT GLENWOOD, IL

 

LOCATION.-- Lat 41°31'49", long 87°37'20" (NAD of 1927), in SW1/4SE1/4 sec.9, T.35 N., R.14 E., Cook County, Hydrologic Unit 07120003, on right bank 20 ft downstream from abandoned Baltimore and Ohio Chicago Terminal Railroad bridge, 0.7 mi north of Chicago Heights, 0.8 mi south of Glenwood, 1.0 mi upstream from Deer Creek, and at mile 9.2.
 

DRAINAGE AREA.-- 24.7 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: May 1949 to current year. Prior to October 1974, records published with those for streams in the St. Lawrence River basin (WSP 1307, 1727, 1911, 2111, WDR IL 1971-74).
 

STAGE: Water years 1994 to current year.
 

REVISED RECORDS.-- WSP 1437: 1955. WDR IL-75-1: Drainage area.
 

GAGE.-- Water-stage recorder. Datum of gage is 610.97 ft above NGVD of 1929.
 

REMARKS.-- Effluent from sewage-treatment plant 1 mi upstream consists of publicly supplied water from Lake Michigan and ground-water sources.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,700 ft3/s (estimated), July 18, 1996, gage height unknown; maximum recorded gage height, 11.26 ft, Aug. 17, 1968, may have been higher during period of no gage-height record, July 17-20, 1996; minimum daily, 6.0 ft3/s, July 4, Aug. 21, Sept. 5, 11, 25, 1949.
 

EXTREMES OUTSIDE PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Flood of Apr. 1947, reached a stage of 12.94 ft, from floodmarks, discharge not determined.
 

REMARKS FOR CURRENT YEAR.-- Records fair. Effluent from sewage-treatment plant upstream averaged 19.9 ft3/s during the year. The maximum monthly average was 31.2 ft3/s in July and the minimum was 14.7 ft3/s in October.
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 17  17  17  24  23  21  24  113  24  22  139  80 
2 20  17  17  23  22  20  24  42  24  22  147  36 
3 17  17  17  23  26  21  24  33  55  22  78  27 
4 83  17  16  22  26  21  214  63  29  22  98  22 
5 28  21  18  22  22  21  110  213  26  178  52  21 
 
6 21  18  17  23  21  22  46  54  27  83  42  20 
7 18  17  18  22  20  23  53  59  26  81  36  21 
8 19  17  17  22  20  46  44  46  25  82  30  19 
9 18  22  17  21  20  29  36  412  25  61  28  19 
10 17  29  17  21  20  25  32  99  25  53  26  19 
 
11 17  19  17  21  20  28  30  210  24  40  36  17 
12 18  18  16  20  20  35  28  68  23  31  27  23 
13 19  18  17  20  20  76  27  46  23  27  24  20 
14 17  20  17  19  20  35  27  51  23  25  24  55 
15 17  25  17  19  21  33  25  44  22  199  23  24 
 
16 19  19  17  19  20  31  25  36  23  50  22  20 
17 16  19  17  19  21  30  25  33  23  109  26  19 
18 17  19  106  19  21  28  24  31  35  114  21  18 
19 17  19  54  19  22  38  24  30  30  47  21  19 
20 16  18  31  20  23  51  42  46  24  38  20  18 
 
21 16  25  27  19  23  35  27  30  24  690  20  17 
22 16  23  25  19  23  29  25  28  23  161  20  27 
23 16  19  24  19  21  27  24  27  23  54  19  19 
24 16  18  23  19  21  25  23  27  24  43  19  19 
25 20  18  23  20  21  30  24  25  23  36  19  17 
 
26 18  18  23  20  21  27  23  25  24  30  23  32 
27 17  18  22  21  21  25  23  25  23  214  18  25 
28 17  18  22  20  21  31  23  28  25  116  18  19 
29 20  17  22  22  ---  29  22  27  25  55  41  19 
30 17  17  36  20  ---  25  96  26  22  42  20  16 
 
31 16  ---  28  23  ---  24  ---  27  ---  36  33  --- 

TOTAL 620 577 755 640 600 941 1194 2024 772 2783 1170 727
MEAN 20.0 19.2 24.4 20.6 21.4 30.4 39.8 65.3 25.7 89.8 37.7 24.2
MAX 83 29 106 24 26 76 214 412 55 690 147 80
MIN 16 17 16 19 20 20 22 25 22 22 18 16


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 2003, BY WATER YEAR (WY)
MEAN 27.4 33.8 37.8 36.1 42.4 57.5 60.8 50.0 44.6 34.7 29.2 27.9
MAX 87.1 108 172 97.7 136 188 120 153 138 147 85.2 108
(WY) 1955 1991 1983 1993 1997 1979 1999 1996 1993 1996 1968 1961
MIN 11.0 9.31 11.4 12.0 19.3 20.8 19.3 18.2 12.4 14.0 11.8 9.28
(WY) 1950 1950 1954 1954 1964 1981 1971 1954 1949 1952 1949 1949

SUMMARY STATISTICS FOR 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1949 - 2003
ANNUAL TOTAL 14269    12803     
ANNUAL MEAN 39.1 35.1   40.3      
HIGHEST ANNUAL MEAN 67.9       1993
LOWEST ANNUAL MEAN 24.8       1954
HIGHEST DAILY MEAN 808        May 12 690          Jul 21 1500          A
LOWEST DAILY MEAN 15        B 16          B 6.0       C
ANNUAL SEVEN-DAY MINIMUM 15        Aug 7 16          Oct 17 8.5       Sep 5 1949
MAXIMUM PEAK FLOW 1580          Jul 21 2700      D Jul 18 1996
MAXIMUM PEAK STAGE 10.34     Jul 21 11.26 E Aug 17 1968
INSTANTANEOUS LOW FLOW 6.6       Oct 1 0.00 F Jun 3 1992
10 PERCENT EXCEEDS 62    54      68         
50 PERCENT EXCEEDS 24    23      24         
90 PERCENT EXCEEDS 17    17      16         

A - Aug. 17, 1968; July 18, 1996 (estimated).

B - Several days.

C - July 4, Aug. 21, Sept. 5, 11, 25, 1949.

D - Estimated, gage height unknown.

E - May have been higher during period of no gage-height record, July 17-20, 1996.

F - No effuent from sewage-treatment plant because of temporary equipment repair.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data