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 Cook County Forest Preserve bike trail, 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 good except those for Oct. 1 to Nov. 17, which are fair, and those for extimated daily discharges, which are poor. Effluent from sewage-treatment plant upstream averaged 23.1 ft3/s during the year. The maximum monthly average was 32.8 ft3/s in March and the minimum was 16.5 ft3/s in September.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 17  17  28  23  21  64  e61  59  102  20  18  27 
2 15  81  26  23  22  72  e44  38  61  21  19  24 
3 19  39  26  23  22  44  e39  32  48  54  33  23 
4 18  72  27  23  21  106  e38  29  41  119  115  23 
5 16  180  65  28  21  435  e36  29  37  34  30  21 
 
6 17  48  53  23  21  108  e35  27  33  28  23  21 
7 15  34  43  21  21  68  e33  29  31  25  21  21 
8 15  26  38  21  20  52  e32  28  29  24  20  20 
9 14  24  40  21  20  43  e31  28  27  24  19  20 
10 15  22  96  21  20  37  e31  44  57  24  19  19 
 
11 14  22  63  22  20  35  e30  49  61  23  18  19 
12 17  20  42  25  19  31  e29  54  489  23  18  20 
13 16  19  34  23  20  30  e30  119  91  23  18  19 
14 97  19  32  22  20  38  e30  182  90  24  18  19 
15 29  19  30  21  19  31  e29  85  55  22  17  44 
 
16 27  21  32  21  19  32  e34  52  43  21  17  107 
17 20  24  28  24  19  35  e38  40  36  21  18  29 
18 18  592  27  23  20  38  e30  57  33  21  20  24 
19 17  276  25  21  26  35  e31  40  30  21  29  23 
20 16  80  24  21  68  33  e38  35  28  21  25  22 
 
21 15  56  24  21  59  29  e39  32  42  49  20  20 
22 16  45  24  21  47  27  e29  151  33  35  18  20 
23 16  105  24  21  58  e35  e28  151  28  28  18  18 
24 15  113  25  21  57  e36  e44  91  26  22  60  19 
25 51  62  23  21  41  e51  e58  120  25  20  113  20 
 
26 21  45  23  21  34  e92  e32  62  24  20  77  20 
27 18  38  23  21  31  e67  31  46  23  19  105  20 
28 19  34  26  20  29  e114  30  37  24  19  271  19 
29 17  31  26  20  29  e203  28  34  22  19  79  19 
30 17  30  25  20  ---  e95  45  256  21  21  42  18 
 
31 18  ---  24  20  ---  e121  ---  341  ---  20  32  --- 

TOTAL 655 2194 1046 677 844 2237 1063 2377 1690 865 1350 738
MEAN 21.1 73.1 33.7 21.8 29.1 72.2 35.4 76.7 56.3 27.9 43.5 24.6
MAX 97 592 96 28 68 435 61 341 489 119 271 107
MIN 14 17 23 20 19 27 28 27 21 19 17 18
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 2004, BY WATER YEAR (WY)
MEAN 27.3 34.5 37.8 35.8 42.2 57.8 60.4 50.5 44.8 34.6 29.5 27.8
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 2003 CALENDAR YEAR FOR 2004 WATER YEAR WATER YEARS 1949 - 2004
ANNUAL TOTAL 14746    15736     
ANNUAL MEAN 40.4 43.0   40.3      
HIGHEST ANNUAL MEAN 67.9       1993
LOWEST ANNUAL MEAN 24.8       1954
HIGHEST DAILY MEAN 690        Jul 21 592          Nov 18 1500          A
LOWEST DAILY MEAN 14        Oct 9,11 14          Oct 9,11 6.0       B
ANNUAL SEVEN-DAY MINIMUM 15        Oct 5 15          Oct 5 8.5       Sep 5 1949
MAXIMUM PEAK FLOW 867          Nov 18 2700      C Jul 18 1996
MAXIMUM PEAK STAGE 9.07     Nov 18 11.26 D Aug 17 1968
INSTANTANEOUS LOW FLOW 10          E 0.00 F Jun 3 1992
10 PERCENT EXCEEDS 66    79      69         
50 PERCENT EXCEEDS 24    27      24         
90 PERCENT EXCEEDS 19    19      16         

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

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

C - Estimated, gage height unknown.

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

E - Several days.

F - No effluent 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