Station list     Available data
ILLINOIS RIVER BASIN


05572000       SANGAMON RIVER AT MONTICELLO, IL



LOCATION.-- Lat 40°01'51", long 88°35'20", in NE1/4SW1/4 sec.12, T.18 N., R.5 E., Piatt County, Hydrologic Unit 07130006, on right downstream side of highway bridge, 0.5 mi west of Monticello, and at mile 162.2.

DRAINAGE AREA.-- 550 mi2.

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

DISCHARGE: February 1908 to December 1912, June 1914 to current year. Monthly discharge only for some periods, published in WSP 1308. Published as "near Monticello" 1910-12.

 

STAGE: Water years 1994-2000.

SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1990-92 and 1998.

 

MISCELLANEOUS: Contaminants in streambed sediments, July 1996; contaminants in fish tissue, July 1996; streambank sediment size, October 1997; streambed sediment size, October 1997.

BIOLOGICAL: Benthic macroinvertebrates, September 1996, September 1997, and September 1998; fish, July 1997 and July 1998.

REVISED RECORDS.-- WSP 525: 1920. WSP 1115: 1946-47. WSP 1208: 1915-16, 1918-20, 1927, 1929, 1939. WSP 1508: 1908(M), 1917, 1928(M). WDR IL-81-2: 1909(P), 1912(P), 1915(P), 1919-32(P), 1935(P), 1937-38(P), 1940-41(P), 1944(P), 1946-47(P). WDR IL-89-2: 1988.

GAGE.-- Water-stage recorder, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 625.89 ft above sea level. Prior to Sept. 30, 1964, nonrecording gage at site 0.2 mi downstream at same datum. Oct. 1, 1964, to Oct. 22, 1971, nonrecording gage at present site and datum. Water temperature and specific conductance continuously recorded at station for the National Water-Quality Assessment Program.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 19,000 ft3/s, Oct. 4, 1926, gage height, 18.50 ft, from graph based on gage readings, site then in use; maximum gage height, 19.06 ft, Apr. 13, 1994, discharge, 15,900 ft3/s; no flow Aug. 28, Sept. 5, 11, 17, 18, Oct. 30, 31, Nov. 1, 1988.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
113   5.15.711   e6.7138 98 160 542 292 28 12   
210   5.25.712   e7.1124 94 155 422 252 23 10   
314   4.85.719   e7.4113 94 141 343 222 22 8.5
416   4.45.419   e8.2107 92 142 308 200 24 7.7
515   4.511   21   e9.098 85 133 375 244 22 7.8
 
614   5.223   20   e9.591 84 123 326 244 19 7.0
713   5.625   19   e9.885 80 118 270 272 18 6.7
822   6.128   17   10   80 77 115 235 219 17 6.6
920   6.127   18   11   79 69 119 206 175 16 6.2
1018   6.122   17   15   72 67 157 187 154 15 13   
 
1117   5.817   16   28   67 77 170 180 157 14 24   
1215   6.215   15   35   68 80 179 184 150 12 24   
1313   5.714   14   45   66 71 288 491 133 11 23   
1412   4.516   13   46   66 70 236 469 113 12 27   
1510   5.618   12   45   64 69 181 429 99 12 26   
 
168.96.518   11   44   62 69 153 314 86 11 21   
178.36.618   11   37   58 94 139 243 75 11 15   
188.76.218   11   126   52 140 134 202 66 13 12   
197.66.118   11   367   63 143 147 176 61 13 11   
207.35.918   11   351   145 143 138 179 54 11 9.7
 
216.75.515   11   301   261 161 224 625 49 11 8.4
226.25.415   9.5241   306 218 214 821 43 16 8.2
235.66.513   9.7212   262 293 188 1010 38 30 7.6
245.26.312   9.5196   217 292 165 1510 33 220 9.6
255.15.711   8.3176   189 321 146 1380 30 79 17   
 
265.15.510   7.5159   165 280 133 1060 27 43 19   
274.74.910   7.0152   162 254 356 761 25 33 30   
284.74.610   6.5144   150 222 1160 547 23 23 29   
294.65.611   5.9140   134 193 1610 426 20 20 22   
303.85.912   e6.0---   119 171 1200 346 25 18 17   
 
313.9---   12   e6.3---   108 --- 758 --- 43 15 ---   

TOTAL318.4168.1459.5385.22938.7377142019282145673624832446.0
MEAN10.35.6014.812.410112214029948611726.814.9
MAX226.628213673063211610151029222030
MIN3.84.45.45.96.7526711517620116.2
CFSM.02.01.03.02.18.22.25.54.88.21.05.03
IN..02.01.03.03.20.26.28.63.99.25.06.03

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 2000, BY WATER YEAR (WY)
MEAN174241343421565713811723501285150115
MAX286828422155263618992472275336092081158514862427
(WY)192719861928195019591979192219081974199319811926
MIN1.325.503.673.4310.020.257.642.619.33.851.76.48
(WY)198919151964197719311931193119341934198819881988

SUMMARY STATISTICSFOR 1999 CALENDAR YEARFOR 2000 WATER YEARWATER YEARS 1908 - 2000
ANNUAL TOTAL111447.8  40992.9  
ANNUAL MEAN305     112     417         
HIGHEST ANNUAL MEAN1105         1927
LOWEST ANNUAL MEAN68.0      1934
HIGHEST DAILY MEAN3410         Apr 191610         May 2918700         Oct 4 1926
LOWEST DAILY MEAN3.8      Oct 303.8      Oct 30.00    A
ANNUAL SEVEN-DAY MINIMUM4.5      Oct 304.5      Oct 30.07    Sep 11 1988
INSTANTANEOUS PEAK FLOW1680         May 2919000      BOct 4 1926
INSTANTANEOUS PEAK STAGE11.82    May 2919.06 CApr 13 1994
INSTANTANEOUS LOW FLOW3.6      D
ANNUAL RUNOFF (CFSM).56.20.76    
ANNUAL RUNOFF (INCHES)7.542.7710.30    
10 PERCENT EXCEEDS776     271     1100         
50 PERCENT EXCEEDS67     24     157         
90 PERCENT EXCEEDS6.1  6.1  11         
A - Aug. 28, Sept. 5, 11, 17, 18, Oct. 30 to Nov. 1, 1988.
B - Gage height, 18.50 ft, from graph based on gage readings, site them in use.
C - Discharge, 15,900 ft3/s.
D - Oct. 31 to Nov. 1.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data