Station list     Available data
ILLINOIS RIVER BASIN


05572000       SANGAMON RIVER AT MONTICELLO, IL

 

LOCATION.-- Lat 40°01'51", long 88°35'20" (NAD of 1927), 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 to current year.

SURFACE-WATER QUALITY

 

CHEMICAL: Water years 1990-92, 1997-98, and 2001 to current year.

 

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: Water years 1996-98, and 2002.

 

FISH: Water years 1997-98, and 2002-03.

 

HABITAT: Water years 1996-98, and 2002-03.

 

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, and crest-stage gage. Datum of gage is 625.89 ft above NGVD of 1929. 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.

 

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 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
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
116 15 21 107 e41 e57 111 126 232 139 118 698 
215 13 22 127 e45 e60 104 123 193 137 108 979 
316 13 22 130 e50 e56 97 121 181 127 148 1150 
419 15 21 95 e60 e54 96 133 172 116 278 862 
516 20 21 107 e72 e56 99 397 163 104 272 500 
 
615 19 21 89 e65 e62 233 730 155 94 218 334 
715 21 18 83 e56 e72 458 726 153 254 151 252 
814 22 19 82 e51 e82 527 552 143 413 115 204 
915 21 19 83 e46 e96 639 562 138 263 96 171 
1016 19 19 79 e41 e110 555 933 134 945 84 147 
 
11e15 23 20 54 e38 e130 428 1550 245 2230 76 129 
12e14 28 20 e62 e35 e160 347 1680 1160 2750 69 114 
13e13 23 20 e60 e31 182 292 1550 1670 2850 64 103 
14e15 21 19 e56 e34 230 251 1230 1540 2510 60 96 
1512 20 19 e52 e38 198 223 940 1370 1470 55 91 
 
1612 21 21 e49 e35 179 207 798 1320 601 54 86 
1711 23 21 e46 e32 161 202 734 1100 367 53 81 
1815 24 37 e44 e30 147 185 590 695 338 46 75 
1917 23 62 e41 e32 144 168 486 505 598 41 69 
2011 24 92 e38 e37 181 168 468 404 829 37 65 
 
2112 24 115 e36 e44 186 168 383 338 755 34 63 
2211 26 114 e34 e56 170 165 342 294 683 31 64 
2311 25 93 e32 e80 197 152 313 263 497 28 61 
2412 25 76 e31 e100 207 140 286 235 358 26 59 
2517 25 63 e30 e85 183 142 265 214 292 25 57 
 
2614 24 67 e30 e73 157 146 246 197 239 23 67 
2714 24 53 e31 e76 142 150 227 181 199 22 85 
2813 22 54 e32 e60 140 146 211 167 178 20 267 
2917 22 53 e33 --- 132 135 205 157 160 38 266 
3014 22 58 e35 --- 119 128 203 147 144 38 199 
 
3115 --- 89 e38 --- 114 --- 341 --- 132 207 --- 

TOTAL4426471369184614434164686217451138662077226357394
MEAN14.321.644.259.551.513422956346267085.0246
MAX19281151301002306391680167028502781150
MIN11131830305496121134942057
CFSM0.030.040.080.110.090.240.421.020.841.220.150.45
IN.0.030.040.090.120.100.280.461.180.941.400.180.50

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 2003, BY WATER YEAR (WY)
MEAN171237338412585713800727503285150115
MAX286828422155263619372472275336092081158514862427
(WY)192719861928195020011979192219081974199319811926
MIN1.325.503.673.4310.020.257.642.619.33.851.760.48
(WY)198919151964197719311931193119341934198819881988

SUMMARY STATISTICSFOR 2002 CALENDAR YEARFOR 2003 WATER YEARWATER YEARS 1908 - 2003
ANNUAL TOTAL218342     78891     
ANNUAL MEAN598     216     416         
HIGHEST ANNUAL MEAN1105         1927
LOWEST ANNUAL MEAN68.0      1934
HIGHEST DAILY MEAN5120         May 152850         Jul 1318700         Oct 4 1926
LOWEST DAILY MEAN11         A11         A0.00    B
ANNUAL SEVEN-DAY MINIMUM13         Oct 1713         Oct 170.07    Sep 11 1988
MAXIMUM PEAK FLOW2900         Jul 1319000      COct 4 1926
MAXIMUM PEAK STAGE13.99    Jul 1319.06 DApr 13 1994
INSTANTANEOUS LOW FLOW10         E
ANNUAL RUNOFF (CFSM)1.090.390.76    
ANNUAL RUNOFF (INCHES)14.775.3410.29    
10 PERCENT EXCEEDS1980     553     1090         
50 PERCENT EXCEEDS148     91     157         
90 PERCENT EXCEEDS16     19     12         

A - Oct. 17, 20, 22, 23.

B - Aug. 28, Sept. 5, 11, 17, 18, Oct. 30 to Nov. 1, 1988.

C - Gage height, 18.50 ft. from graph based on gage readings. Site then in use.

D - Discharge, 15,900 ft3/s.

E - Oct. 17, 18, 22, 23.



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data