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
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
122 27 32 41 30 24 28 241 36 22 131 155 
224 27 32 36 28 24 26 113 32 21 496 86 
323 29 30 31 31 23 30 64 86 23 198 53 
4100 30 31 28 37 24 237 50 49 24 420 36 
566 31 31 28 30 24 447 413 43 292 331 30 
 
638 33 31 29 27 24 196 250 47 162 152 28 
730 30 31 28 26 25 106 115 41 297 99 26 
829 33 34 31 25 36 92 122 32 211 65 26 
926 36 31 34 25 39 69 716 34 250 47 32 
1026 51 31 31 25 32 58 637 30 190 41 28 
 
1125 33 39 27 25 30 50 509 28 88 50 31 
1226 29 34 26 25 40 43 318 27 58 46 32 
1331 27 33 27 25 89 40 163 26 40 38 29 
1425 27 32 26 25 66 37 105 33 35 36 68 
1525 40 29 25 25 64 35 104 27 339 34 39 
 
1635 32 32 24 25 49 34 83 27 282 33 29 
1740 31 29 25 25 42 33 83 25 203 36 28 
1831 33 136 23 25 37 33 54 42 675 31 28 
1927 32 155 23 24 35 32 49 70 404 28 26 
2028 30 62 23 25 78 53 84 43 186 36 24 
 
2126 31 42 24 27 55 42 58 31 1330 32 23 
2224 46 35 23 26 42 36 43 26 1000 29 33 
2324 34 32 23 25 35 32 36 26 414 29 31 
2425 32 30 22 24 32 31 34 26 193 27 28 
2528 31 28 22 24 36 30 33 23 97 27 25 
 
2629 31 29 23 23 32 30 31 25 84 30 33 
2729 36 28 24 24 30 29 29 23 392 30 56 
2828 35 26 24 24 30 29 30 21 752 27 37 
2928 34 26 26 --- 40 30 39 26 332 51 32 
3028 33 38 25 --- 32 129 36 24 140 39 27 
 
3128 --- 43 26 --- 29 --- 48 --- 94 38 --- 

TOTAL97498412528287301198209746901029863027071159
MEAN31.432.840.426.726.138.669.915134.327887.338.6
MAX10051155413789447716861330496155
MIN222726222323262921212723


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2003, BY WATER YEAR (WY)
MEAN60.485.096.097.812217417713711477.059.357.7
MAX356385391328421534362399445333236372
(WY)195519911983199319971979195019961993199619681961
MIN12.514.315.516.226.137.434.029.324.921.714.911.7
(WY)195119491951195420031981198619581948195219481948

SUMMARY STATISTICSFOR 2002 CALENDAR YEARFOR 2003 WATER YEARWATER YEARS 1948 - 2003
ANNUAL TOTAL33008   26278     
ANNUAL MEAN90.472.0  105         
HIGHEST ANNUAL MEAN199         1993
LOWEST ANNUAL MEAN51.5      1963
HIGHEST DAILY MEAN2430       May 121330         Jul 213810         Nov 28 1990
LOWEST DAILY MEAN19       A21         B4.4      Sep 11 1949
ANNUAL SEVEN-DAY MINIMUM21       Aug 2623         Jan 199.0      Sep 14 1948
MAXIMUM PEAK FLOW1890         Jul 214700      CJul 13 1957
MAXIMUM PEAK STAGE12.13    Jul 2117.06 DJun 14 1981
INSTANTANEOUS LOW FLOW19         E
10 PERCENT EXCEEDS169   153     225         
50 PERCENT EXCEEDS43   32     47         
90 PERCENT EXCEEDS24   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