Station list     Available data
ILLINOIS RIVER BASIN


05585000       LA MOINE RIVER AT RIPLEY, IL



LOCATION.-- Lat 40°01'29", long 90°37'54", 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 1994-2000.

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.


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

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and crest-stage gage. Datum of gage is 431.1 ft above sea level. 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. (observed), May 18, 1995; 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.-- Record fair except those for June 25-30, July 5-7 and estimated daily discharges, which are poor.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1818 50 41 100 e61 807 265 188 256 2080 186 38 
2316 51 40 104 e63 737 249 179 221 950 240 36 
3185 47 41 111 e65 676 238 171 205 953 252 35 
4142 45 49 117 e68 562 232 177 195 1160 193 33 
5143 45 89 96 e71 489 230 172 174 3570 160 31 
 
6181 45 119 99 e74 441 220 157 169 4670 150 30 
7179 46 175 100 e77 401 206 153 255 4630 134 28 
8141 45 192 110 e80 361 200 148 274 3440 169 27 
9117 45 172 115 e83 329 199 154 215 1540 196 25 
10101 45 137 111 e86 305 196 162 189 985 159 25 
 
1189 47 164 112 e89 287 193 250 179 1800 137 25 
1283 47 236 121 93 261 183 376 170 1860 117 26 
1376 45 197 124 112 240 186 316 177 2270 101 24 
1470 45 166 100 121 233 185 272 193 1670 88 27 
1566 47 150 93 121 230 172 232 367 1020 81 26 
 
1662 47 141 109 110 259 168 197 633 736 75 31 
1759 45 137 114 110 309 179 179 713 601 72 27 
1857 45 140 96 155 325 205 175 568 519 1010 27 
1956 45 137 e89 233 303 232 179 479 495 266 27 
2057 45 125 e83 287 310 268 189 399 455 111 26 
 
2157 45 92 e77 344 454 232 173 705 416 78 26 
2255 45 e87 e73 311 525 264 154 1470 368 65 25 
2353 46 e82 e69 275 482 342 147 1100 332 61 25 
2451 44 e79 e66 252 431 290 146 1070 301 62 32 
2550 42 e76 e64 259 396 245 152 2750 274 66 40 
 
2649 42 e77 e61 662 385 228 179 4810 254 61 103 
2749 44 e79 e60 1560 362 214 368 4770 242 55 142 
2848 44 e82 e58 1520 329 198 455 4710 e220 49 108 
2947 43 e85 e56 1020 357 196 427 4860 e210 47 85 
3049 42 e88 e57 --- 348 198 382 4790 e190 43 69 
 
3150 --- 92 e59 --- 297 --- 294 --- 179 40 --- 

TOTAL355613593567280483621223166136903370663839045241229
MEAN11545.311590.52883952202231236123814641.0
MAX818512361241560807342455486046701010142
MIN47424056612301681461691794024
CFSM.09.04.09.07.22.31.17.17.96.96.11.03
IN..10.04.10.08.24.35.19.201.071.10.13.04

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 2000, BY WATER YEAR (WY)
MEAN43651949763110261319158413891136794344441
MAX574759495060333838995785567892576336597515915726
(WY)198719861983194619851985194419951990199319321961
MIN7.069.087.9213.29.9661.411621.342.516.111.45.13
(WY)195719901990195419891941193419341936193619361988

SUMMARY STATISTICSFOR 1999 CALENDAR YEARFOR 2000 WATER YEARWATER YEARS 1921 - 2000
ANNUAL TOTAL313934     126604     
ANNUAL MEAN860     346     842         
HIGHEST ANNUAL MEAN2452         1993
LOWEST ANNUAL MEAN50.2      1989
HIGHEST DAILY MEAN9640         Jan 284860         Jun 2926800         Mar 7 1985
LOWEST DAILY MEAN30         Sep 2724         Sep 13.96    Sep 25 1989
ANNUAL SEVEN-DAY MINIMUM32         Sep 1625         Sep 91.8      Sep 22 1989
INSTANTANEOUS PEAK FLOW5220         Jun 2628000      AMar 7 1985
INSTANTANEOUS PEAK STAGE18.77    Jun 2629.15 BMay 18 1995
INSTANTANEOUS LOW FLOW23         C.00    Sep 26 1989
ANNUAL RUNOFF (CFSM).67.27.65    
ANNUAL RUNOFF (INCHES)9.033.648.85    
10 PERCENT EXCEEDS2210     642     2230         
50 PERCENT EXCEEDS274     152     235         
90 PERCENT EXCEEDS44     44     27         
A - Gage height, 29.07 ft.
B - Observed.
C - Sept. 13, 14, and 20.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data