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, 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 19.9 ft3/s during the year. The maximum monthly average was 31.2 ft3/s in July, and the minimum was 14.7 ft3/s in October.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 22  27  32  41  30  24  28  241  36  22  131  155 
2 24  27  32  36  28  24  26  113  32  21  496  86 
3 23  29  30  31  31  23  30  64  86  23  198  53 
4 100  30  31  28  37  24  237  50  49  24  420  36 
5 66  31  31  28  30  24  447  413  43  292  331  30 
 
6 38  33  31  29  27  24  196  250  47  162  152  28 
7 30  30  31  28  26  25  106  115  41  297  99  26 
8 29  33  34  31  25  36  92  122  32  211  65  26 
9 26  36  31  34  25  39  69  716  34  250  47  32 
10 26  51  31  31  25  32  58  637  30  190  41  28 
 
11 25  33  39  27  25  30  50  509  28  88  50  31 
12 26  29  34  26  25  40  43  318  27  58  46  32 
13 31  27  33  27  25  89  40  163  26  40  38  29 
14 25  27  32  26  25  66  37  105  33  35  36  68 
15 25  40  29  25  25  64  35  104  27  339  34  39 
 
16 35  32  32  24  25  49  34  83  27  282  33  29 
17 40  31  29  25  25  42  33  83  25  203  36  28 
18 31  33  136  23  25  37  33  54  42  675  31  28 
19 27  32  155  23  24  35  32  49  70  404  28  26 
20 28  30  62  23  25  78  53  84  43  186  36  24 
 
21 26  31  42  24  27  55  42  58  31  1330  32  23 
22 24  46  35  23  26  42  36  43  26  1000  29  33 
23 24  34  32  23  25  35  32  36  26  414  29  31 
24 25  32  30  22  24  32  31  34  26  193  27  28 
25 28  31  28  22  24  36  30  33  23  97  27  25 
 
26 29  31  29  23  23  32  30  31  25  84  30  33 
27 29  36  28  24  24  30  29  29  23  392  30  56 
28 28  35  26  24  24  30  29  30  21  752  27  37 
29 28  34  26  26  ---  40  30  39  26  332  51  32 
30 28  33  38  25  ---  32  129  36  24  140  39  27 
 
31 28  ---  43  26  ---  29  ---  48  ---  94  38  --- 

TOTAL 974 984 1252 828 730 1198 2097 4690 1029 8630 2707 1159
MEAN 31.4 32.8 40.4 26.7 26.1 38.6 69.9 151 34.3 278 87.3 38.6
MAX 100 51 155 41 37 89 447 716 86 1330 496 155
MIN 22 27 26 22 23 23 26 29 21 21 27 23


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2003, BY WATER YEAR (WY)
MEAN 60.4 85.0 96.0 97.8 122 174 177 137 114 77.0 59.3 57.7
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 26.1 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 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1948 - 2003
ANNUAL TOTAL 33008    26278     
ANNUAL MEAN 90.4 72.0   105         
HIGHEST ANNUAL MEAN 199          1993
LOWEST ANNUAL MEAN 51.5       1963
HIGHEST DAILY MEAN 2430        May 12 1330          Jul 21 3810          Nov 28 1990
LOWEST DAILY MEAN 19        A 21          B 4.4       Sep 11 1949
ANNUAL SEVEN-DAY MINIMUM 21        Aug 26 23          Jan 19 9.0       Sep 14 1948
MAXIMUM PEAK FLOW 1890          Jul 21 4700      C Jul 13 1957
MAXIMUM PEAK STAGE 12.13     Jul 21 17.06 D Jun 14 1981
INSTANTANEOUS LOW FLOW 19          E
10 PERCENT EXCEEDS 169    153      225         
50 PERCENT EXCEEDS 43    32      47         
90 PERCENT EXCEEDS 24    24      23         

A - Aug. 31, Sept. 1

B - June 28, July 2.

C - Gage height, 16.00 ft.

D - Discharge, 4,140 ft3/s.

E - Several days.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data