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 1994-2002.
 

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 estimated daily discharges, which are poor. Effluent from sewage-treatment plant upstream averaged 24.0 ft3/s during the year. The maximum monthly average was 36.8 ft3/s in May and the minimum was 15.5 ft3/s in September.
DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 e20  30  54  24  97  33  38  43  30  25  17  15 
2 e18  103  45  25  62  56  140  44  28  23  18  27 
3 e17  53  40  24  51  60  69  37  28  24  16  19 
4 e71  43  36  24  42  48  49  34  28  80  16  18 
5 e124  38  36  25  36  44  43  30  28  42  23  17 
 
6 e58  35  38  27  34  71  39  52  27  26  16  17 
7 e44  33  33  25  33  109  43  39  27  24  16  18 
8 e31  30  31  25  35  237  256  90  25  23  15  17 
9 e27  30  30  24  51  281  316  346  25  82  15  18 
10 e25  31  29  24  70  124  93  84  29  34  16  20 
 
11 24  28  28  24  60  65  62  288  44  26  15  18 
12 149  28  28  24  48  56  53  808  29  24  16  18 
13 209  27  37  24  42  50  47  294  28  22  15  17 
14 253  35  42  24  38  46  44  94  36  20  16  17 
15 88  28  35  25  35  42  40  60  36  20  15  17 
 
16 68  28  35  24  34  40  37  92  28  19  24  17 
17 48  27  62  25  32  38  39  71  27  19  17  17 
18 41  27  44  24  32  36  35  53  26  21  16  23 
19 35  34  41  24  61  35  33  50  23  19  31  29 
20 33  28  37  23  142  36  104  45  24  18  19  44 
 
21 32  28  34  24  79  32  77  43  24  18  17  22 
22 31  27  36  23  54  30  60  38  25  19  15  20 
23 92  25  38  24  45  30  47  36  25  17  19  19 
24 117  33  34  23  39  28  59  119  25  17  17  18 
25 75  36  31  23  37  30  53  53  26  17  16  17 
 
26 54  29  30  23  47  30  42  42  36  18  16  17 
27 44  31  29  21  38  30  90  38  73  28  16  17 
28 40  27  28  22  35  42  127  35  30  19  17  17 
29 35  38  27  22  ---  46  61  34  25  28  15  19 
30 31  116  26  33  ---  41  49  33  25  20  16  18 
 
31 32  ---  25  80  ---  35  ---  32  ---  18  16  --- 

TOTAL 1966 1106 1099 806 1409 1881 2245 3157 890 810 532 587
MEAN 63.42 36.87 35.45 26.00 50.32 60.68 74.83 101.8 29.67 26.13 17.16 19.57
MAX 253 116 62 80 142 281 316 808 73 82 31 44
MIN 17 25 25 21 32 28 33 30 23 17 15 15
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 2002, BY WATER YEAR (WY)
MEAN 27.58 34.07 38.08 36.37 42.82 58.06 61.23 49.69 44.91 33.70 29.05 27.94
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 2001 CALENDAR YEAR FOR 2002 WATER YEAR WATER YEARS 1949 - 2002
ANNUAL TOTAL 16716          16488     
ANNUAL MEAN 45.80     45.17 40.38    
HIGHEST ANNUAL MEAN 67.9       1993
LOWEST ANNUAL MEAN 24.8       1954
HIGHEST DAILY MEAN 535              Feb 9 808          May 12 1500          A
LOWEST DAILY MEAN 17      B     Oct 3 15          C 6.0       D
ANNUAL SEVEN-DAY MINIMUM 20              Jul 11 15          Aug 7 8.5       Sep 5 1949
MAXIMUM PEAK FLOW 1290          May 12 2700      E Jul 18 1996
MAXIMUM PEAK STAGE 9.97     May 12 11.26 F Aug 17 1968
INSTANTANEOUS LOW FLOW 6.6       Jan 27 0.00 G Jun 3 1992
10 PERCENT EXCEEDS 76          76      69         
50 PERCENT EXCEEDS 32          31      24         
90 PERCENT EXCEEDS 23          17      16         

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

B - Estimated.

C - Several days.

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

E - Estimated, gage height unknown.

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

G - 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