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 1994-2002.

SURFACE-WATER QUALITY

 

CHEMICAL: Water years 1990-92 and 1998 to current.

 

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 1996-1998.

 

FISH: Water years 1997, 1998, and 2002.

 

HABITAT: Water years 1996-1998, and 2002.

 

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. 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 fair except those for estimated daily discharges, which are poor.

DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
13.4353 283 e215 2440 897 1720 2520 593 306 66 148 
23.4329 524 e200 2970 893 1330 2170 552 270 59 120 
33.3313 550 e190 3250 1510 1020 1580 515 243 44 100 
43.0294 445 e200 3030 2010 831 1120 483 219 33 83 
56.6269 381 206 2420 2050 715 897 526 198 28 71 
 
63.8244 342 202 1700 1780 639 836 653 175 24 63 
74.2231 313 195 1150 1540 590 1050 747 155 20 55 
85.0221 291 182 930 1680 625 1170 701 140 18 48 
94.5213 269 179 803 1980 806 1500 601 127 16 45 
108.5205 250 176 738 2320 883 1760 574 114 14 45 
 
118.8196 233 181 712 2450 885 1820 722 106 13 40 
1214   186 221 162 729 2470 803 2930 1560 102 12 36 
1322   180 229 140 712 2120 726 4070 1660 88 12 33 
1422   173 261 156 650 1600 665 4860 2070 78 14 29 
1572   162 343 145 591 1270 623 5120 2250 70 13 27 
 
16236   158 456 131 554 1070 582 3750 2040 64 21 27 
17228   156 670 117 513 934 536 2970 1650 57 31 28 
18207   153 1020 90 459 851 496 2370 1090 51 26 35 
19205   154 1370 109 737 794 471 1980 794 46 30 31 
20152   145 1190 108 2430 753 454 1760 669 42 75 33 
 
21115   142 865 121 3220 710 551 1530 584 43 152 32 
2292   136 688 113 3240 649 864 1240 519 49 206 31 
2385   132 608 109 2980 602 912 1040 477 42 850 30 
24127   138 570 110 2510 590 842 918 443 39 2000 28 
25432   135 541 101 1930 613 785 844 418 41 2100 25 
 
26963   133 431 96 1480 595 706 785 402 50 1960 22 
271360   130 378 91 1180 561 828 717 501 54 1440 20 
281080   134 442 89 1010 655 2030 686 498 43 625 18 
29647   145 356 92 --- 1330 2410 777 496 60 367 16 
30492   191 303 118 --- 2040 2470 735 363 56 257 16 
 
31410   --- 253 852 --- 1980 --- 654 --- 56 190 --- 

TOTAL7015.5575115076517645068412972779856159251513184107161335
MEAN226.3191.7486.3167.016101332926.61812838.4102.7345.744.50
MAX13603531370852325024702470512022503062100148
MIN3.013022189459561454654363391216
CFSM0.410.350.880.302.932.421.683.291.520.190.630.08
IN.0.470.391.020.353.052.791.883.801.700.220.720.09

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 2002, BY WATER YEAR (WY)
MEAN172.8239.4341.6415.5591.0719.3806.6728.7503.5280.4150.9113.6
MAX286828422155263619372472275336092081158514862427
(WY)192719861928195020011979192219081974199319811926
MIN1.325.503.673.4310.020.257.642.619.33.851.760.48
(WY)198919151964197719311931193119341934198819881988

SUMMARY STATISTICSFOR 2001 CALENDAR YEARFOR 2002 WATER YEARWATER YEARS 1908 - 2002
ANNUAL TOTAL139722.6  243726.5  
ANNUAL MEAN382.8  667.7  418.7      
HIGHEST ANNUAL MEAN1105         1927
LOWEST ANNUAL MEAN68.0      1934
HIGHEST DAILY MEAN5950         Feb 275120         May 1518700         Oct 4 1926
LOWEST DAILY MEAN2.9      Sep 303.0      Oct 40.00    A
ANNUAL SEVEN-DAY MINIMUM3.3      Sep 284.0      Oct 10.07    Sep 11 1988
MAXIMUM PEAK FLOW5670         May 1419000      BOct 4 1926
MAXIMUM PEAK STAGE15.77    May 1419.06 CApr 13 1994
INSTANTANEOUS LOW FLOW2.8      Oct 1,4-5
ANNUAL RUNOFF (CFSM)0.701.210.76    
ANNUAL RUNOFF (INCHES)9.4516.4810.34    
10 PERCENT EXCEEDS897     1980     1100         
50 PERCENT EXCEEDS175     356     158         
90 PERCENT EXCEEDS9.1  28     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