Station list     Available data
ILLINOIS RIVER BASIN


05547755       SQUAW CREEK AT ROUND LAKE, IL



LOCATION.-- Lat 42°21'00", long 88°05'18", in SW1/4NE1/4 sec.29, T.45 N., R.10 E., Lake County, Hydrologic Unit 07120006, on left bank at upstream side of bridge on MacGillis Road at Round Lake, and at mile 7.5.

DRAINAGE AREA.-- 17.2 mi2.

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

DISCHARGE: October 1989 to current year.
 

STAGE: Water years 1994-2001.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 764.94 ft above sea level.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 312 ft3/s, July 18, 1993, from rating curve extended above 120 ft3/s on basis of slope-area measurement of peak flow, gage height, 6.42 ft; no flow at times in 1991, 1994 and 1998.

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 4.3 1.4 9.6 e4.7 e23  44    11    5.5 11    1.6   .45 .67
2 3.1 1.6 9.2 e4.7 e20  37    10    4.7 15    1.4   2.2   .63
3 2.6 3.8 8.5 e4.6 e18  34    9.2 4.0 12    1.3   2.3   .58
4 11    2.3 7.7 e4.5 e17  30    9.3 3.3 9.7 1.3   1.5   .47
5 11    1.9 6.7 e4.6 15  25    11    3.1 15    1.1   .85 .39
 
6 11    3.6 5.9 e4.8 13  21    17    2.8 25    .82 .59 .54
7 8.1 25    5.5 e4.9 13  19    17    5.0 22    4.9   .46 5.7  
8 6.2 21    5.3 e4.7 15  17    14    6.0 16    3.8   .39 3.2  
9 5.2 63    5.2 e4.4 160  15    14    4.5 12    2.5   1.5   5.6  
10 4.4 87    5.2 e4.3 200  14    15    5.3 8.7 2.0   .89 8.3  
 
11 3.6 66    e5.8 e4.2 192  16    28    31    8.0 1.6   .49 5.8  
12 3.3 48    e5.9 e4.4 113  16    60    29    49    1.2   .45 2.5  
13 3.2 38    e5.7 e5.0 71  18    49    19    43    1.1   .54 1.8  
14 2.9 31    e5.9 e6.2 58  16    36    16    26    1.1   .47 1.2  
15 2.1 23    e5.6 e7.8 51  24    27    18    18    .79 .40 .81
 
16 2.1 19    e5.4 e8.2 43  33    23    14    14    .74 3.6   .54
17 2.1 16    e5.2 e8.4 e34  30    18    11    11    1.6   2.2   .55
18 2.0 13    e5.7 e8.4 e29  30    16    8.0 9.4 1.4   1.6   .67
19 2.1 11    e5.8 e7.4 25  29    14    5.9 7.6 1.4   2.4   16     
20 1.9 9.4 e5.9 e6.7 22  25    16    4.7 5.8 1.0   2.1   14     
 
21 2.5 8.5 e5.7 e6.2 e20  22    18    4.5 5.2 .70 1.6   33     
22 2.9 7.5 e5.5 e5.8 e19  20    21    4.4 4.8 2.1   2.1   22     
23 2.9 6.8 e5.4 e5.1 17  20    28    4.5 4.2 2.1   4.4   21     
24 2.5 6.7 e5.3 e4.8 30  22    26    5.0 3.6 4.4   2.1   23     
25 3.2 6.7 e5.2 e4.7 120  18    18    5.3 3.1 3.4   2.3   14     
 
26 2.9 9.4 e5.0 e4.6 90  15    14    5.9 2.5 2.3   2.3   8.9  
27 2.6 10    e4.9 e4.6 68  12    11    18    2.2 1.5   1.6   5.3  
28 2.3 9.5 e4.8 e4.6 55  11    8.9 16    2.4 .85 1.1   3.9  
29 2.5 9.5 e4.8 14    ---  9.8 7.6 11    2.2 .80 .85 3.3  
30 2.2 9.6 e4.7 e23    ---  11    6.3 8.0 1.8 .74 .73 2.9  
 
31 1.4 ---    e4.7 e26    ---  10    ---    6.7 ---    .77 .63 ---     

TOTAL 120.1 569.2 181.7 216.3 1551 663.8 573.3 290.1 370.2 52.31 45.09 207.25
MEAN 3.87 19.0 5.86 6.98 55.4 21.4 19.1 9.36 12.3 1.69 1.45 6.91
MAX 11 87 9.6 26 200 44 60 31 49 4.9 4.4 33
MIN 1.4 1.4 4.7 4.2 13 9.8 6.3 2.8 1.8 .70 .39 .39
CFSM .23 1.12 .34 .41 3.26 1.26 1.12 .55 .73 .10 .09 .41
IN. .26 1.25 .40 .47 3.39 1.45 1.25 .63 .81 .11 .10 .45
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1990 - 2001, BY WATER YEAR (WY)
MEAN 3.23 12.8 11.1 14.7 25.6 26.6 33.3 27.9 18.9 10.8 2.62 3.47
MAX 8.55 33.6 26.6 40.2 55.4 45.8 79.4 99.6 74.4 54.0 7.60 12.9
(WY) 1991 1993 1992 1999 2001 1990 1993 1996 1996 1993 1990 1992
MIN .40 1.16 .98 3.14 10.9 7.56 9.33 3.36 .76 .44 .19 .11
(WY) 1995 1997 1990 1994 1995 1996 1994 1994 1992 1991 1991 1994

SUMMARY STATISTICS FOR 2000 CALENDAR YEAR FOR 2001 WATER YEAR WATER YEARS 1990 - 2001
ANNUAL TOTAL 6674.06 4840.35
ANNUAL MEAN 18.2   13.3   15.8      
HIGHEST ANNUAL MEAN 27.6       1993
LOWEST ANNUAL MEAN 9.47     1994
HIGHEST DAILY MEAN 161          May 19 200          Feb 10 284          May 21 1996
LOWEST DAILY MEAN .48     Sep 7 .39     A .00     B
ANNUAL SEVEN-DAY MINIMUM .63     Sep 4 .56     Aug 31 .00     Sep 10 1994
MAXIMUM PEAK FLOW 265          Feb 11 312      C Jul 18 1993
MAXIMUM PEAK STAGE 5.56     Feb 11 6.42     Jul 18 1993
INSTANTANEOUS LOW FLOW .12     Sep 6
ANNUAL RUNOFF (CFSM) 1.07 .78 .93    
ANNUAL RUNOFF (INCHES) 14.60 10.59 12.66    
10 PERCENT EXCEEDS 51      29      39         
50 PERCENT EXCEEDS 6.9   5.8   6.7      
90 PERCENT EXCEEDS 1.9   1.1   .61    

A - Aug. 8, Sept. 5.
B - No flow at times in 1991, 1994 and 1998.
C - From rating curve extended above 120 ft3/s on basis of slope-area measurement of peak flow.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data