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ROCK RIVER BASIN


05443000       ROCK RIVER ABOVE SINNISSIPPI DAM AT ROCK FALLS, IL

 

LOCATION.-- Lat 41°47'14", long 89°40'35" (NAD of 1927), in SW1/4SE1/4 sec.22, T.21 N., R.7 E., Whiteside County, Hydrologic Unit 07093005, on concrete wall at mouth of Hennepin Feeder Canal, 300 ft upstream of the Upper Rock Falls Dam, and at mile 73.6.
 

DRAINAGE AREA.-- 8,740 mi2.(revised WRD IL-75-1).
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

STAGE: October 2003 to current year.
 

GAGE.-- Water-stage recorder and phone telemeter. Datum of Gage is 630.00 ft above NGVD 1929, based on elevation provided by Illinois Department of Natural Resources.
 

EXTREMES FOR PERIOD OF RECORD.--

STAGE: Maximum gage height, 6.88 ft, Dec. 22, 2003; minimum 5.45 ft, Jan. 8, 2004.
 

EXTREMES FOR CURRENT YEAR.-- Maximum gage height, 6.88 ft, Dec. 22; minimum, 5.45 ft, Jan. 8.
Gage height, feet, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 --- 6.25 6.57 6.47 5.99 6.19 6.09 6.19 6.22 6.15 6.22 6.30
2 --- 6.26 6.44 6.40 6.05 6.18 6.12 6.16 6.15 6.14 6.21 6.17
3 --- 6.36 6.40 6.44 6.00 6.16 6.12 6.14 6.17 6.11 6.26 6.21
4 --- 6.36 6.40 6.38 5.94 6.13 6.09 6.14 6.20 6.16 6.38 6.31
5 --- 6.44 6.48 6.26 5.99 6.13 6.12 6.18 6.09 6.19 6.38 6.29
 
6 --- 6.52 6.40 6.11 5.95 6.12 6.18 6.11 6.03 6.20 6.25 6.27
7 --- 6.54 6.47 6.02 5.96 6.12 6.15 6.09 6.04 6.17 6.34 6.24
8 --- 6.52 6.52 5.89 6.02 6.16 6.14 6.09 6.01 6.18 6.29 6.25
9 --- 6.47 6.58 6.09 6.02 6.11 6.09 6.14 6.02 6.17 6.29 6.26
10 --- 6.45 6.54 6.07 6.00 6.08 6.11 6.13 6.02 6.15 6.32 6.23
 
11 --- 6.47 6.23 6.08 6.00 6.14 6.09 6.08 6.00 6.20 6.22 6.16
12 --- 6.43 6.21 6.15 6.00 6.08 6.13 6.13 6.39 6.15 6.15 6.13
13 --- 6.43 6.30 6.15 5.99 6.13 6.10 6.18 6.46 6.21 6.14 6.13
14 --- 6.34 6.38 6.13 5.97 6.16 6.09 6.15 6.37 6.32 6.13 6.14
15 --- 6.40 6.23 6.10 5.96 6.13 6.15 6.15 6.14 6.26 6.25 6.16
 
16 --- 6.35 6.33 6.10 5.96 6.13 6.13 6.10 6.10 6.25 6.26 6.16
17 --- 6.29 6.24 6.13 5.93 6.15 6.14 6.12 6.11 6.24 6.31 6.14
18 --- 6.53 6.17 6.08 5.98 6.17 6.12 6.11 6.10 6.20 6.17 6.13
19 --- 6.54 6.07 6.00 5.98 6.16 6.14 6.07 6.14 6.20 6.12 6.33
20 --- 6.58 6.27 6.01 6.00 6.14 6.09 6.08 6.09 6.22 6.23 6.22
 
21 --- 6.55 6.57 6.02 6.01 6.08 6.15 6.15 6.14 6.21 6.34 6.14
22 --- 6.42 6.73 6.01 6.04 6.07 6.07 6.19 6.21 6.23 6.21 6.16
23 --- 6.55 6.57 6.00 6.11 6.12 6.12 6.20 6.16 6.19 6.18 6.09
24 --- 6.40 6.37 5.98 6.27 6.19 6.15 6.22 6.09 6.14 6.24 6.34
25 --- 6.34 6.23 6.00 6.39 6.21 6.14 6.21 6.10 6.11 6.26 6.28
 
26 --- 6.37 6.35 6.00 6.44 6.18 6.14 6.14 6.09 6.16 6.29 6.22
27 --- 6.52 6.40 6.00 6.35 6.19 6.09 6.10 6.11 6.22 6.36 6.23
28 --- 6.57 6.41 5.98 6.23 6.19 6.09 6.10 6.15 6.18 6.37 6.25
29 6.19 6.47 6.41 5.97 6.24 6.12 6.10 6.09 6.08 6.21 6.24 6.15
30 6.23 6.55 6.40 5.91 --- 6.13 6.11 6.15 6.11 6.19 6.27 6.16
 
31 6.25 --- 6.44 5.90 --- 6.10 --- 6.22 --- 6.25 6.32 ---

MEAN --- 6.44 6.39 6.09 6.06 6.14 6.12 6.14 6.14 6.19 6.26 6.21
MAX --- 6.58 6.73 6.47 6.44 6.21 6.18 6.22 6.46 6.32 6.38 6.34
MIN --- 6.25 6.07 5.89 5.93 6.07 6.07 6.07 6.00 6.11 6.12 6.09


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data