Station list     Available data
ILLINOIS RIVER BASIN


05587060       ILLINOIS RIVER AT HARDIN, IL



LOCATION.-- Lat 39°09'37", long 90°36'55", in NW1/4NW1/4 sec.26, T.10 S., R.2 W., Calhoun County, Hydrologic Unit 07130011, on right bank at downstream side of State Highways 16 and 100 bridge at north edge of Hardin, 1.6 mi downstream from Macoupin Creek and at mile 21.5.

DRAINAGE AREA.-- 28,690 mi2, does not include diversion from Lake Michigan through the Chicago Sanitary and Ship Canal, which has occurred since Jan. 17, 1900.

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

STAGE: October 1986 to current year. Gage-height record for February 1932 to Sept. 30, 1986, available in files of U.S. Army Corps of Engineers. Partial gage-height records from 1878 through 1880 available in files of U.S. Army Corps of Engineers.
 

PARTIAL RECORD: Miscellaneous discharge measurements, water years 1997-98.
SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1978-91.
 

WATER TEMPERATURE: Water years 1973-77.
 

MISCELLANEOUS: Contaminants in streambed sediments, October 1996; contaminants in fish tissue, October 1996.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and crest-stage gage. Datum of gage is 400.00 ft above sea level (levels by U.S. Army Corps of Engineers).

EXTREMES FOR PERIOD OF RECORD.--
STAGE: Maximum gage height, 42.40 ft, Aug. 3, 1993; minimum, 18.06 ft, Dec. 22, 1989.

EXTREMES OUTSIDE PERIOD OF RECORD.--
STAGE: Maximum gage height, 38.2 ft Apr. 29, 1973; minimum observed, 7.33 ft, Oct. 7, 1879, from records of U.S. Army Corps of Engineers.

EXTREMES FOR CURRENT YEAR.-- Maximum gage height, 26.44 ft, June 28; minimum, 18.81 ft, Jan. 25.
GAGE HEIGHT, FEET, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 19.78 19.21 19.50 19.33 19.19 20.26 19.68 20.77 20.17 25.26 19.66 19.29
2 19.55 18.99 19.34 19.41 19.20 20.05 19.47 20.70 20.54 24.57 19.61 19.21
3 19.47 19.19 19.41 19.25 19.24 20.15 19.49 20.77 20.63 24.08 19.75 19.16
4 19.42 19.21 19.28 19.14 18.99 19.98 19.30 20.54 20.54 23.69 19.91 19.15
5 19.45 19.25 19.40 19.25 19.12 20.01 19.60 20.37 20.76 23.44 19.89 19.10
 
6 19.47 19.20 19.47 19.37 19.26 19.98 19.45 20.26 20.99 23.40 19.63 19.21
7 19.44 19.20 19.81 19.12 19.19 19.95 19.44 20.19 21.04 23.49 19.53 19.17
8 19.42 19.10 19.67 19.21 19.28 19.82 19.34 19.80 21.05 23.49 19.83 19.09
9 19.13 19.12 19.47 19.25 19.20 19.59 19.44 19.77 21.13 23.27 19.83 19.15
10 19.23 19.19 19.41 19.18 19.15 19.59 19.37 19.77 21.17 22.59 19.84 19.19
 
11 19.34 19.11 19.57 19.10 19.10 19.75 19.40 20.03 21.26 22.00 19.87 19.21
12 19.35 19.34 19.55 19.40 19.31 19.85 19.43 20.03 21.40 22.13 19.69 19.10
13 19.37 19.13 19.29 19.35 19.23 19.68 19.66 19.93 21.28 22.05 19.60 19.29
14 19.43 19.17 19.22 19.38 19.23 19.53 19.43 20.04 21.12 21.94 19.27 19.46
15 19.38 19.19 19.23 19.35 19.28 19.48 19.29 20.14 21.09 22.14 19.18 19.55
 
16 19.16 19.29 19.33 19.08 19.16 19.60 19.31 20.14 21.25 22.31 19.22 19.65
17 19.07 19.22 19.31 19.25 19.41 19.79 19.35 20.13 21.63 22.38 19.36 19.70
18 19.23 19.39 19.26 19.16 19.37 19.97 19.56 20.24 22.08 22.50 19.38 19.69
19 19.19 19.23 19.33 19.15 19.26 19.65 19.80 20.11 22.43 23.19 19.40 19.57
20 19.23 19.12 19.11 19.03 19.31 19.60 19.59 20.01 22.75 22.76 19.48 19.38
 
21 19.22 19.40 18.98 19.12 19.30 19.65 19.65 20.17 23.82 22.22 19.43 19.37
22 19.06 19.35 19.01 19.23 19.21 19.77 20.14 20.36 23.57 21.95 19.30 19.51
23 19.17 19.15 19.08 19.00 19.33 19.83 20.40 20.40 23.06 21.65 19.35 19.28
24 19.15 19.25 19.15 19.05 19.33 19.73 20.16 20.55 24.25 21.40 19.62 19.24
25 19.23 19.31 19.14 18.95 19.50 19.59 20.15 20.79 24.94 20.92 19.74 19.39
 
26 19.19 19.18 19.06 19.05 19.93 19.54 20.35 20.85 25.53 20.50 19.53 19.60
27 19.27 19.35 19.12 19.23 20.03 19.61 20.58 21.24 26.11 19.88 19.30 19.74
28 19.14 19.32 19.05 19.28 20.30 19.37 20.66 21.18 26.39 19.81 19.27 19.46
29 19.25 19.42 19.15 19.33 20.50 19.60 20.73 20.73 26.19 19.80 19.10 19.44
30 19.28 19.31 19.27 19.26 --- 19.71 20.86 20.59 25.83 19.61 19.02 19.42
 
31 19.17 --- 19.30 19.26 --- 19.61 --- 20.44 --- 19.76 19.26 ---

MEAN 19.30 19.23 19.30 19.21 19.38 19.75 19.77 20.36 22.47 22.20 19.51 19.36
MAX 19.78 19.42 19.81 19.41 20.50 20.26 20.86 21.24 26.39 25.26 19.91 19.74
MIN 19.06 18.99 18.98 18.95 18.99 19.37 19.29 19.77 20.17 19.61 19.02 19.09

CAL YR 1999 MEAN 21.65 MAX 29.68 MIN 18.98
WTR YR 2000 MEAN 19.99 MAX 26.39 MIN 18.95


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data