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

 

ALGAE: Water years 1996-98 and 2002-03.

 

BENTHIC MACROINVERTEBRATES: Water years 1996-98 and 2002.

 

FISH: Water years 1997-98 and 2002-04.

 

HABITAT: Water years 1996-98 and 2002-04.

 

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 2003 TO SEPTEMBER 2004
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1157 103 620 799 e200 226 3730 298 1850 309 70 235 
2132 96 524 677 e195 227 3300 293 2410 289 67 160 
3120 95 458 613 e190 220 3050 296 3400 276 63 119 
4112 92 428 889 e185 243 2510 291 3390 264 60 94 
5109 97 419 1760 e180 666 1860 294 2370 259 57 79 
 
6103 99 406 1910 e175 1190 1270 287 1000 243 53 69 
793 116 404 1500 e170 1350 980 271 680 227 56 62 
884 143 415 945 e165 1070 832 251 572 210 48 55 
979 137 413 753 e160 749 725 238 497 212 45 50 
1076 127 418 615 e157 575 635 231 505 393 45 45 
 
1173 119 440 531 e153 479 572 230 1760 578 41 41 
1271 116 487 492 e151 414 524 238 2710 622 43 38 
1372 112 451 451 e150 364 488 295 3160 500 41 36 
1482 126 406 413 e149 339 456 582 3790 900 35 33 
1582 153 383 386 e148 319 427 958 3920 637 30 33 
 
16106 138 364 360 e147 312 405 1320 3420 431 29 31 
17129 130 340 350 e146 303 384 1420 2370 322 27 28 
18118 332 323 368 e145 295 365 1110 2140 260 26 24 
19106 1230 304 350 e200 281 348 1610 2230 231 24 23 
20101 1950 284 288 e250 269 342 1500 1930 190 28 25 
 
2197 2440 261 288 406 257 368 1230 999 163 27 23 
2293 2730 267 295 411 245 460 954 748 144 27 21 
2391 2360 529 258 336 236 509 767 631 130 25 20 
2489 1830 1070 301 291 233 437 674 539 115 27 19 
2591 1800 1310 259 272 246 403 1250 494 103 38 18 
 
2689 1890 1090 295 259 1530 380 2130 474 94 112 17 
2793 1750 772 277 244 4740 362 2240 441 87 169 18 
28100 1230 646 241 230 4530 340 2240 399 81 190 16 
29112 873 789 e230 223 5070 320 1910 362 75 322 16 
30116 723 1090 e220 --- 4390 303 993 333 77 460 16 
 
31111 --- 1020 e210 --- 4780 --- 1090 --- 75 368 --- 

TOTAL3087231371713117324608836148270852749149524849726531464
MEAN99.67715535592101166903887165127485.648.8
MAX1572730131019104115070373022403920900460235
MIN7192261210145220303230333752416
CFSM0.181.401.001.020.382.121.641.613.000.500.160.09
IN.0.211.561.161.170.412.441.831.863.350.570.180.10

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 2004, BY WATER YEAR (WY)
MEAN170243341413581718802729515284150114
MAX286828422155263619372472275336092081158514862427
(WY)192719861928195020011979192219081974199319811926
MIN1.325.503.673.4310.020.257.642.619.33.851.760.48
(WY)198919151964197719311931193119341934198819881988

SUMMARY STATISTICSFOR 2003 CALENDAR YEARFOR 2004 WATER YEARWATER YEARS 1908 - 2004
ANNUAL TOTAL119788       219629     
ANNUAL MEAN328       600     418           
HIGHEST ANNUAL MEAN1105           1927
LOWEST ANNUAL MEAN68.0        1934
HIGHEST DAILY MEAN2850           Jul 135070         Mar 2918700           Oct 4 1926
LOWEST DAILY MEAN20           Aug 2816         Sep 28-300.00      A
ANNUAL SEVEN-DAY MINIMUM25           Aug 2217         Sep 240.07      Sep 11 1988
MAXIMUM PEAK FLOW5310         Mar 27,2919000        BOct 4 1926
MAXIMUM PEAK STAGE14.89    Mar 27,2919.06   CApr 13 1994
INSTANTANEOUS LOW FLOW15         Sep 30
ANNUAL RUNOFF (CFSM)0.5971.090.761    
ANNUAL RUNOFF (INCHES)8.10  14.8510.34      
10 PERCENT EXCEEDS866       1770     1100           
50 PERCENT EXCEEDS142       290     158           
90 PERCENT EXCEEDS41       45     12           

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 then in use.

C - Discharge 15,900 ft3/s.



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data