Station list     Available data
ILLINOIS RIVER BASIN


05585000       LA MOINE RIVER AT RIPLEY, IL

 

LOCATION.-- Lat 40°01'29", long 90°37'54" (NAD of 1927), in SW1/4NE1/4 sec.33, T.1 N., R.2 W., Brown County, Hydrologic Unit 07130010, on deck of bridge on old U.S. Highway 24, 600 ft downstream from bridge on new U.S. Highway 24, 0.2 mi east of Ripley, 2 mi upstream from Town Branch, and at mile 12.3.
 

DRAINAGE AREA.-- 1,293 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: March 1921 to current year. Prior to October 1931, published as Crooked Creek at Ripley.
 

STAGE: Water years 1994 to current year.

SURFACE-WATER QUALITY
 

SEDIMENT: Water years 1981 and 1995-97.
 

CHEMICAL: Water years 1975-91.
 

SPECIFIC CONDUCTANCE: Water year 1979.
 

WATER TEMPERATURE: Water year 1979.
 

MISCELLANEOUS: Sediment concentration and particle size, water years 1995-97.
 

REVISED RECORDS.-- WSP 975: 1936. WSP 1208: 1925, 1929, 1933. WDR IL-75-1: Drainage area.
 

GAGE.-- U.S. Army Corps of Engineers water-stage recorder, satellite telemeter, and crest-stage gage. Datum of gage is 431.1 ft above NGVD of 1929. Prior to July 28, 1926, nonrecording gage at site 200 ft upstream at datum 0.02 ft higher. July 28, 1926 to Jan. 11, 1935, nonrecording gage at present site and datum.
 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 28,000 ft3/s, Mar. 7, 1985, gage height, 29.07 ft; maximum gage height, 29.15 ft, May 18, 1995, observed; no flow for part of Sept. 26, 1989.

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 7,140 mg/L, June 21, 1981; minimum daily mean, 5 mg/L, Dec. 4, 5, 1996.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 212,000 tons, May 8, 1996; minimum daily, 0.87 tons, Jan. 20, 1997.
 

REMARKS FOR CURRENT YEAR.-- Records fair except those for estimated daily discharges, which are poor.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 48  43  39  46  e36  e120  189  426  201  214  101  1270 
2 48  46  38  48  e42  e106  167  500  192  189  94  1530 
3 48  48  36  41  e50  e98  148  587  207  166  297  694 
4 50  47  40  42  e58  e102  641  585  199  147  389  288 
5 56  47  39  54  e66  e97  934  1930  200  133  154  171 
 
6 62  43  31  53  e74  e94  395  1530  208  121  104  118 
7 60  41  39  45  e56  e95  361  1140  220  112  83  89 
8 61  41  39  47  e48  e100  346  706  227  108  71  71 
9 60  43  34  51  e42  e110  313  584  256  1450  62  59 
10 58  44  36  50  e37  e125  290  774  320  2800  56  51 
 
11 52  42  36  32  e34  e170  260  4460  352  2250  52  46 
12 47  40  37  42  e32  242  228  3970  281  1450  49  43 
13 42  39  37  46  e32  196  203  2580  292  877  48  298 
14 36  40  37  44  e34  267  185  1290  260  487  48  281 
15 33  40  37  36  e42  358  170  882  217  327  49  168 
 
16 32  38  37  e33  e80  335  170  727  194  255  45  142 
17 31  36  38  e31  e230  270  657  617  172  214  43  108 
18 33  37  110  e30  e210  253  533  532  155  3490  40  86 
19 37  40  113  e29  e190  420  396  473  143  3830  38  72 
20 33  39  84  e28  e170  545  346  425  132  1780  36  59 
 
21 33  38  127  e27  e195  337  316  382  126  683  34  56 
22 34  37  117  e27  e240  264  277  350  123  377  33  108 
23 33  37  101  e26  e430  218  245  311  119  273  31  147 
24 33  38  77  e25  e400  187  227  292  109  215  29  193 
25 36  37  59  e26  e310  190  1370  294  115  176  29  188 
 
26 34  36  46  e26  e230  206  1460  272  201  150  29  165 
27 34  35  50  e26  e170  169  843  255  372  130  31  405 
28 35  35  47  27  e140  190  542  236  605  153  29  226 
29 41  35  47  27  ---  262  494  218  425  130  173  161 
30 44  38  46  29  ---  212  445  206  273  114  130  132 
 
31 45  ---  46  32  ---  207  ---  207  ---  109  106  --- 

TOTAL 1329 1200 1700 1126 3678 6545 13151 27741 6896 22910 2513 7425
MEAN 42.9 40.0 54.8 36.3 131 211 438 895 230 739 81.1 248
MAX 62 48 127 54 430 545 1460 4460 605 3830 389 1530
MIN 31 35 31 25 32 94 148 206 109 108 29 43
CFSM 0.03 0.03 0.04 0.03 0.10 0.16 0.34 0.69 0.18 0.57 0.06 0.19
IN. 0.04 0.03 0.05 0.03 0.11 0.19 0.38 0.80 0.20 0.66 0.07 0.21
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 2003, BY WATER YEAR (WY)
MEAN 429 506 485 616 1053 1302 1569 1433 1164 780 353 431
MAX 5747 5949 5060 3338 3899 5785 5678 9257 6336 5975 1591 5726
(WY) 1987 1986 1983 1946 1985 1985 1944 1995 1990 1993 1932 1961
MIN 7.06 9.08 7.92 13.2 9.96 61.4 116 21.3 42.5 16.1 11.4 5.13
(WY) 1957 1990 1990 1954 1989 1941 1934 1934 1936 1936 1936 1988

SUMMARY STATISTICS FOR 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1921 - 2003
ANNUAL TOTAL 454612          96214         
ANNUAL MEAN 1246          264          842         
HIGHEST ANNUAL MEAN 2452          1993
LOWEST ANNUAL MEAN 50.2       1989
HIGHEST DAILY MEAN 19600      A     May 15 4460              May 11 26800          Mar 7 1985
LOWEST DAILY MEAN 31              Oct 17, Dec 6 25      B     Jan 24 0.96     Sep 25 1989
ANNUAL SEVEN-DAY MINIMUM 33              Oct 15 26      B     Jan 21 1.8       Sep 22 1989
MAXIMUM PEAK FLOW 5710              Jul 18 28000      C Mar 7 1985
MAXIMUM PEAK STAGE 19.75         Jul 18 29.15 D May 18 1995
INSTANTANEOUS LOW FLOW 22      E     Jan 11 0.00     Sep 26 1989
ANNUAL RUNOFF (CFSM) 0.96     0.20     0.65    
ANNUAL RUNOFF (INCHES) 13.08     2.77     8.85    
10 PERCENT EXCEEDS 3090          537          2220         
50 PERCENT EXCEEDS 232          109          234         
90 PERCENT EXCEEDS 38          34          28         

A - Backwater from Illinois River.

B - Estimated due to backwater from ice.

C - Gage height, 29.07 ft.

D - Observed.

E - Result of freeze up.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data