Station list     Available data
ILLINOIS RIVER BASIN


05536275       THORN CREEK AT THORNTON, IL

 

LOCATION.-- Lat 41°34'06", long 87°36'28" (NAD of 1927), in SE1/4NW1/4 sec.34, T.36 N., R.14 E., Cook County, Hydrologic Unit 07120003, on right bank at downstream side of bridge on Margaret Street in Thornton, 1.0 mi downstream from North Creek, and at mile 4.2.
 

DRAINAGE AREA.-- 104 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: May 1948 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.

SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1979-91.
 

REVISED RECORDS.-- WSP 1707: Drainage area.
 

GAGE.-- Water-stage recorder, and phone telemeter. Datum of gage is 586.43 ft above NGVD of 1929. Prior to Dec. 18, 1948, nonrecording gage at same site and datum.
 

REMARKS.-- Effluent from sewage-treatment plant 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, 4,700 ft3/s, July 13, 1957, gage height, 16.00 ft; maximum gage height, 17.06 ft, June 14, 1981, discharge, 4,140 ft3/s, minimum daily discharge, 4.4 ft3/s, Sept. 11, 1949.
 

EXTREMES OUTSIDE PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Flood of Apr. 5, 1947, reached a stage of 14.34 ft (from floodmark), discharge, 4,200 ft3/s.
 

REMARKS FOR CURRENT YEAR.-- Records fair. Effluent from sewage-treatment plant upstream averaged 24.0 ft3/s during the year. The maximum monthly 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 31  51  233  40  254  46  68  74  54  36  24  19 
2 28  198  141  44  218  61  273  69  51  35  26  33 
3 27  191  89  46  124  114  304  58  49  35  24  29 
4 35  101  73  45  83  82  163  54  50  66  26  22 
5 329  68  70  46  63  70  98  52  50  70  32  20 
 
6 173  57  74  47  57  86  80  68  48  39  25  22 
7 69  52  65  46  54  225  80  64  48  35  24  22 
8 50  50  60  46  54  567  258  161  49  32  22  23 
9 42  46  58  45  64  893  1170  710  46  101  23  21 
10 39  45  55  45  212  631  539  564  43  53  23  21 
 
11 38  45  57  44  203  285  267  437  68  35  22  24 
12 252  43  60  44  108  203  187  2430  53  30  22  21 
13 272  42  61  44  79  174  132  2150  45  28  21  20 
14 965  48  67  46  65  133  95  834  55  27  20  21 
15 494  47  74  51  59  101  80  361  74  25  21  22 
 
16 266  44  67  56  57  81  80  302  53  24  27  22 
17 155  42  117  49  52  74  78  325  43  26  28  20 
18 90  43  115  45  50  70  75  208  41  26  22  27 
19 75  50  90  43  63  68  69  132  49  28  40  27 
20 74  46  87  43  312  71  214  107  53  25  33  65 
 
21 55  45  69  43  286  69  186  107  39  27  26  35 
22 49  45  64  42  149  66  166  115  36  25  25  29 
23 221  42  68  44  74  63  93  115  39  25  27  25 
24 247  46  60  49  58  60  81  324  36  37  26  23 
25 290  59  55  46  53  57  113  204  38  39  26  22 
 
26 157  54  53  44  58  59  65  113  49  26  24  20 
27 82  53  51  45  54  60  115  87  100  34  23  26 
28 65  48  50  46  48  70  384  76  57  31  21  39 
29 58  53  45  49  ---  80  229  69  43  33  20  29 
30 53  256  42  55  ---  99  115  66  39  32  20  25 
 
31 50  ---  41  115  ---  78  ---  60  ---  26  19  --- 

TOTAL 4831 2010 2311 1493 3011 4796 5857 10496 1498 1111 762 774
MEAN 155.8 67.00 74.55 48.16 107.5 154.7 195.2 338.6 49.93 35.84 24.58 25.80
MAX 965 256 233 115 312 893 1170 2430 100 101 40 65
MIN 27 42 41 40 48 46 65 52 36 24 19 19


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2002, BY WATER YEAR (WY)
MEAN 60.90 85.97 96.98 99.14 124.0 176.6 179.3 137.0 115.6 73.32 58.78 58.03
MAX 356 385 391 328 421 534 362 399 445 333 236 372
(WY) 1955 1991 1983 1993 1997 1979 1950 1996 1993 1996 1968 1961
MIN 12.5 14.3 15.5 16.2 26.6 37.4 34.0 29.3 24.9 21.7 14.9 11.7
(WY) 1951 1949 1951 1954 1963 1981 1986 1958 1948 1952 1948 1948

SUMMARY STATISTICS FOR 2001 CALENDAR YEAR FOR 2002 WATER YEAR WATER YEARS 1948 - 2002
ANNUAL TOTAL 35410      38950         
ANNUAL MEAN 97.01 106.7       105.6      
HIGHEST ANNUAL MEAN 199          1993
LOWEST ANNUAL MEAN 51.5       1963
HIGHEST DAILY MEAN 1500          Feb 10 2430              May 12 3810          Nov 28 1990
LOWEST DAILY MEAN 23          Jul 20 19              A 4.4       Sep 11 1949
ANNUAL SEVEN-DAY MINIMUM 25          Jul 14 21              Aug 26 9.0       Sep 14 1948
MAXIMUM PEAK FLOW 2920              May 12 4700      B Jul 13 1957
MAXIMUM PEAK STAGE 14.04         May 12 17.06 C Jun 14 1981
INSTANTANEOUS LOW FLOW 18      D
10 PERCENT EXCEEDS 223      223          226         
50 PERCENT EXCEEDS 53      53          47         
90 PERCENT EXCEEDS 32      24          23         

A - Aug. 31, Sept. 1.

B - Gage height, 16.00 ft.

C - Discharge, 4,140 ft3/s.

D - Aug. 29, 30, 31, Sept. 26.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data