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 (610.66 ft NAVD 1988).
 

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. Effluent from sewage-treatment plant upstream averaged 23.5 ft3/s during the year. The maximum monthly average was 38.7 ft3/s in January and the minimum was 15.4 ft3/s in September.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 19  197  181  36  31  51  54  27  26  21  24  22 
2 31  112  75  180  30  44  55  26  29  19  24  22 
3 20  48  54  344  31  40  47  26  30  19  24  21 
4 19  189  45  208  37  39  42  26  193  27  27  21 
5 18  68  38  114  46  40  39  25  243  25  23  21 
 
6 18  44  52  71  49  39  36  26  62  20  24  22 
7 18  35  489  54  90  40  35  27  34  19  23  22 
8 34  30  172  49  86  37  33  26  28  19  23  22 
9 24  26  72  45  58  35  33  28  31  19  22  22 
10 19  26  58  50  48  36  32  31  28  18  21  22 
 
11 20  25  57  133  44  40  31  47  23  19  96  22 
12 20  24  46  527  43  39  67  51  21  32  41  22 
13 19  24  39  864  84  35  60  35  37  22  69  22 
14 42  23  35  248  401  33  42  33  40  19  42  24 
15 59  22  33  83  181  32  36  30  23  18  30  47 
 
16 27  22  30  62  144  32  34  30  21  18  26  53 
17 23  22  29  51  74  31  32  30  20  19  25  27 
18 22  23  29  46  55  31  31  30  20  23  33  24 
19 21  63  28  45  49  38  30  130  19  19  27  32 
20 20  39  27  41  64  32  30  59  20  33  140  24 
 
21 18  31  26  40  64  31  29  39  20  31  41  23 
22 19  27  24  39  54  30  63  33  20  20  32  23 
23 83  26  24  38  48  42  46  31  20  19  26  22 
24 32  49  24  37  46  33  35  28  20  19  24  22 
25 25  82  22  39  43  63  33  28  21  76  22  35 
 
26 23  65  23  38  42  64  31  28  20  116  23  26 
27 22  194  23  34  40  48  29  27  20  72  23  23 
28 21  119  23  32  55  43  28  27  20  32  22  40 
29 31  64  22  32  ---  39  27  26  27  27  22  33 
30 28  88  24  33  ---  61  27  26  29  25  22  25 
 
31 22  ---  29  32  ---  109  ---  27  ---  25  22  --- 

TOTAL 817 1807 1853 3645 2037 1307 1147 1063 1165 890 1043 786
MEAN 26.4 60.2 59.8 118 72.8 42.2 38.2 34.3 38.8 28.7 33.6 26.2
MAX 83 197 489 864 401 109 67 130 243 116 140 53
MIN 18 22 22 32 30 30 27 25 19 18 21 21


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 2005, BY WATER YEAR (WY)
MEAN 27.3 35.0 38.1 37.3 42.7 57.5 60.0 50.2 44.7 34.5 29.5 27.8
MAX 87.1 108 172 118 136 188 120 153 138 147 85.2 108
(WY) 1955 1991 1983 2005 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 2004 CALENDAR YEAR FOR 2005 WATER YEAR WATER YEARS 1949 - 2005
ANNUAL TOTAL 16318    17560     
ANNUAL MEAN 44.6 48.1   40.5      
HIGHEST ANNUAL MEAN 67.9       1993
LOWEST ANNUAL MEAN 24.8       1954
HIGHEST DAILY MEAN 489        Jun 12, Dec 7 864          Jan 13 1500          A
LOWEST DAILY MEAN 17        Aug 15, 16 18          B 6.0       C
ANNUAL SEVEN-DAY MINIMUM 18        Aug 11 20          Jul 13 8.5       Sep 5 1949
MAXIMUM PEAK FLOW 1270          Jan 13 2700      D Jul 18 1996
MAXIMUM PEAK STAGE 9.94     Jan 13 11.26 E Aug 17 1968
INSTANTANEOUS LOW FLOW 8.2       Oct 14 0.00 F Jun 3 1992
10 PERCENT EXCEEDS 84    73      69         
50 PERCENT EXCEEDS 28    31      24         
90 PERCENT EXCEEDS 19    20      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 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