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 to current year.

SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1979-91.
 

REVISED RECORDS.-- WSP 1707: Drainage area.
 

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 586.43 ft above NGVD of 1929 (586.11 ft NAVD 1988). 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 except those for estimated daily discharges, which are poor. 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 23  202  525  50  56  121  155  55  48  35  30  38 
2 40  535  379  353  54  102  131  54  49  28  28  28 
3 29  232  202  578  53  88  106  52  62  27  31  25 
4 26  409  106  951  62  84  92  52  129  28  34  25 
5 23  337  83  484  96  90  83  50  686  43  30  25 
 
6 22  144  90  296  130  89  76  49  433  28  27  25 
7 20  75  786  185  276  86  74  49  122  27  26  24 
8 31  59  1280  122  377  83  88  48  91  25  26  24 
9 37  52  570  90  258  76  96  48  92  25  31  26 
10 24  46  304  80  147  70  70  48  83  24  34  27 
 
11 22  42  240  208  108  75  66  67  60  24  110  27 
12 22  35  143  864  102  75  101  82  50  30  86  28 
13 21  33  96  2040  135  70  168  70  60  41  94  27 
14 23  31  78  1490  1020  67  107  62  81  28  101  26 
15 87  31  76  715  960  65  85  56  53  25  50  26 
 
16 47  36  91  325  734  70  77  55  38  25  36  116 
17 32  35  69  175  390  73  71  56  34  25  31  39 
18 32  30  58  132  226  63  68  53  32  37  33  29 
19 29  73  50  e120  168  71  66  152  30  34  37  36 
20 25  67  48  e120  144  70  64  136  29  30  250  32 
 
21 23  55  47  e100  214  66  62  91  29  68  104  26 
22 29  49  46  e96  168  63  116  74  28  45  50  25 
23 146  46  42  e90  129  81  114  64  27  32  37  23 
24 90  53  39  78  112  76  89  78  28  29  31  23 
25 46  217  36  77  119  118  77  78  27  87  28  35 
 
26 37  200  36  81  129  201  71  58  26  99  29  38 
27 31  389  36  78  97  139  65  54  28  292  28  28 
28 28  543  36  74  115  110  67  51  28  61  27  36 
29 42  307  36  65  ---  98  61  52  31  43  27  57 
30 54  203  e38  64  ---  95  57  53  48  36  26  34 
 
31 48  ---  e42  59  ---  323  ---  51  ---  32  34  --- 

TOTAL 1189 4566 5708 10240 6579 2958 2623 1998 2562 1413 1546 978
MEAN 38.4 152 184 330 235 95.4 87.4 64.5 85.4 45.6 49.9 32.6
MAX 146 543 1280 2040 1020 323 168 152 686 292 250 116
MIN 20 30 36 50 53 63 57 48 26 24 26 23
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2005, BY WATER YEAR (WY)
MEAN 59.6 88.7 97.2 101 123 173 174 137 114 75.8 59.6 56.9
MAX 356 385 391 330 421 534 362 399 445 333 236 372
(WY) 1955 1991 1983 2005 1997 1979 1950 1996 1993 1996 1968 1961
MIN 12.5 14.3 15.5 16.2 26.1 37.4 34.0 29.3 24.9 21.7 14.9 11.7
(WY) 1951 1949 1951 1954 2003 1981 1986 1958 1948 1952 1948 1948

SUMMARY STATISTICS FOR 2004 CALENDAR YEAR FOR 2005 WATER YEAR WATER YEARS 1948 - 2005
ANNUAL TOTAL 38766  42360     
ANNUAL MEAN 106  116      105         
HIGHEST ANNUAL MEAN 199          1993
LOWEST ANNUAL MEAN 51.5       1963
HIGHEST DAILY MEAN 1280      Dec 8 2040          Jan 13 3810          Nov 28 1990
LOWEST DAILY MEAN 20      Sep 30, Oct 7 20          Oct 7 4.4       Sep 11 1949
ANNUAL SEVEN-DAY MINIMUM 23      Sep 25 25          Sep 3 9.0       Sep 14 1948
MAXIMUM PEAK FLOW 2320          Jan 13 4700      A Jul 13 1957
MAXIMUM PEAK STAGE 12.99     Jan 13 17.06 B Jun 14 1981
INSTANTANEOUS LOW FLOW 17          Oct 7,14
10 PERCENT EXCEEDS 252  228      225         
50 PERCENT EXCEEDS 46  60      47         
90 PERCENT EXCEEDS 26  27      23         

A - Gage Height, 16.00 ft.

B - Discharge, 4,140 ft3/s.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data