Station list     Available data
ILLINOIS RIVER BASIN


05527950       MILL CREEK AT OLD MILL CREEK, IL



LOCATION.-- Lat 42°24'55", long 87°58'09", in SW1/4SE1/4 sec.32, T.46 N., R.11 E., Lake County, Hydrologic Unit 07120004, on right bank at upstream side of bridge on Hunt Club Road, about 0.5 mi southeast of Old Mill Creek, and at mile 2.9.

DRAINAGE AREA.-- 61.0 mi2.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1989 to current year.
 

STAGE: Water years 1995-2001.
 

PARTIAL RECORD: Annual maximum, water years 1962 to 1976.
SURFACE-WATER QUALITY
 

MISCELLANEOUS: Contaminants in streambed sediments, water year 2000.

REVISED RECORDS.-- WDR IL-77-1: 1962-76(M). WDR IL-91-2: 1990(P). WDR IL-92-2: 1990.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 668.00 ft above sea level. Prior to Oct. 1, 1989, at datum 8.85 ft higher.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,160 ft3/s, April 23, 1999, gage height 12.21 ft; maximum gage height, 12.88 ft, present datum, Mar. 6, 1976; minimum discharge, 0.03 ft3/s, Sept. 7, 8, 10, 11, 1991.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: A gage height of 13.73 ft, present datum, discharge unknown, occurred between October 1976 and September 1989, from mark on crest-stage gage.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 22    12    45  e20  98  151  60  58  50  12    3.5 3.9
2 19    11    44  e20  80  136  56  52  54  9.8 3.7 3.5
3 16    9.0 42  e20  82  129  52  46  52  9.0 4.6 3.0
4 40    6.6 40  e20  74  121  49  41  48  8.2 3.6 2.9
5 38    5.5 36  e20  68  107  47  38  57  6.5 2.7 2.7
 
6 43    6.5 34  e21  64  94  57  34  83  5.4 2.5 2.8
7 37    53    e30  e22  59  86  56  38  79  9.1 2.8 13   
8 32    52    e27  e23  65  81  52  40  70  9.0 3.0 15   
9 28    132    e26  e23  e620  73  53  37  69  7.3 2.7 14   
10 24    178    e25  e23  e460  69  55  37  66  6.3 4.2 26   
 
11 18    127    e23  e23  e360  73  70  88  57  6.8 3.8 17   
12 14    113    e22  e23  e340  74  132  87  182  6.7 2.6 11   
13 12    105    e22  e25  e300  78  112  70  147  5.2 1.9 8.2
14 11    97    e21  e27  229  74  114  118  121  4.2 1.5 7.2
15 9.9 86    e21  e31  190  96  114  151  109  3.8 1.3 6.3
 
16 8.8 79    e21  e39  156  120  100  112  103  3.5 12    5.6
17 8.0 74    e21  e43  130  113  88  94  88  8.0 14    5.1
18 7.6 68    e21  e45  166  116  78  79  77  13    8.7 5.3
19 7.5 62    e24  e45  107  112  69  66  68  8.9 11    43   
20 7.1 57    e24  e43  92  104  82  58  60  6.6 10    38   
 
21 7.1 52    e24  e45  80  98  97  56  53  5.4 7.1 34   
22 7.2 48    e23  48  79  93  118  53  46  5.9 7.7 28   
23 7.7 43    e22  43  69  89  138  49  38  11    38    33   
24 8.9 41    e22  40  84  83  123  45  37  12    20    45   
25 8.3 39    e22  38  355  76  110  41  36  9.1 13    35   
 
26 13    46    e21  37  261  70  97  38  32  6.6 11    27   
27 19    48    e21  35  225  64  89  63  26  4.9 9.1 23   
28 19    45    e20  35  173  64  81  62  21  4.1 7.5 19   
29 16    43    e20  36  ---  74  69  54  18  3.9 5.8 17   
30 14    44    e20  85  ---  69  59  46  15  4.2 4.8 15   
 
31 14    ---    e20  108  ---  61  ---  40  ---  4.2 4.3 ---   

TOTAL 537.1 1782.6 804 1106 5066 2848 2477 1891 1962 220.6 228.4 509.5
MEAN 17.3 59.4 25.9 35.7 181 91.9 82.6 61.0 65.4 7.12 7.37 17.0
MAX 43 178 45 108 620 151 138 151 182 13 38 45
MIN 7.1 5.5 20 20 59 61 47 34 15 3.5 1.3 2.7
CFSM .28 .97 .43 .59 2.97 1.51 1.35 1.00 1.07 .12 .12 .28
IN. .33 1.09 .49 .67 3.09 1.74 1.51 1.15 1.20 .13 .14 .31
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1990 - 2001, BY WATER YEAR (WY)
MEAN 9.51 40.5 39.1 49.1 82.4 94.3 119 90.0 77.3 30.4 11.0 9.25
MAX 34.1 127 106 126 181 157 297 245 266 168 44.0 26.5
(WY) 1991 1993 1992 1993 2001 1993 1993 1996 2000 1993 1990 2000
MIN 1.38 2.66 6.15 6.59 25.2 22.9 28.5 11.9 3.45 1.00 .55 .48
(WY) 1995 2000 1990 2000 1996 1996 1994 1994 1992 1991 1991 1991

SUMMARY STATISTICS FOR 2000 CALENDAR YEAR FOR 2001 WATER YEAR WATER YEARS 1990 - 2001
ANNUAL TOTAL 24644.2   19432.2      
ANNUAL MEAN 67.3   53.2       54.0  
HIGHEST ANNUAL MEAN 102      1993
LOWEST ANNUAL MEAN 29.3   1994
HIGHEST DAILY MEAN 707          Jun 13 620      A     Feb 9 777      Apr 23 1999
LOWEST DAILY MEAN 3.5       Jan 1 1.3           Aug 15 .03 Sep 11 1991
ANNUAL SEVEN-DAY MINIMUM 4.5       Feb 5 2.6           Aug 9 .05 Sep 5 1991
MAXIMUM PEAK FLOW 724              Feb 9 1160      Apr 23 1999
MAXIMUM PEAK STAGE 11.29         Feb 9 12.21 Apr 23 1999
INSTANTANEOUS LOW FLOW 1.2           Aug 15 .03 B
ANNUAL RUNOFF (CFSM) 1.10 .87     .89
ANNUAL RUNOFF (INCHES) 15.04 11.86     12.03
10 PERCENT EXCEEDS 163      112          139     
50 PERCENT EXCEEDS 28      38          26     
90 PERCENT EXCEEDS 6.1   5.5       2.1  

A - Estimated.
B - Sept. 7, 8, 10, 11, 1991.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data