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
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 3.4 353  283  e215  2440  897  1720  2520  593  306  66  148 
2 3.4 329  524  e200  2970  893  1330  2170  552  270  59  120 
3 3.3 313  550  e190  3250  1510  1020  1580  515  243  44  100 
4 3.0 294  445  e200  3030  2010  831  1120  483  219  33  83 
5 6.6 269  381  206  2420  2050  715  897  526  198  28  71 
 
6 3.8 244  342  202  1700  1780  639  836  653  175  24  63 
7 4.2 231  313  195  1150  1540  590  1050  747  155  20  55 
8 5.0 221  291  182  930  1680  625  1170  701  140  18  48 
9 4.5 213  269  179  803  1980  806  1500  601  127  16  45 
10 8.5 205  250  176  738  2320  883  1760  574  114  14  45 
 
11 8.8 196  233  181  712  2450  885  1820  722  106  13  40 
12 14    186  221  162  729  2470  803  2930  1560  102  12  36 
13 22    180  229  140  712  2120  726  4070  1660  88  12  33 
14 22    173  261  156  650  1600  665  4860  2070  78  14  29 
15 72    162  343  145  591  1270  623  5120  2250  70  13  27 
 
16 236    158  456  131  554  1070  582  3750  2040  64  21  27 
17 228    156  670  117  513  934  536  2970  1650  57  31  28 
18 207    153  1020  90  459  851  496  2370  1090  51  26  35 
19 205    154  1370  109  737  794  471  1980  794  46  30  31 
20 152    145  1190  108  2430  753  454  1760  669  42  75  33 
 
21 115    142  865  121  3220  710  551  1530  584  43  152  32 
22 92    136  688  113  3240  649  864  1240  519  49  206  31 
23 85    132  608  109  2980  602  912  1040  477  42  850  30 
24 127    138  570  110  2510  590  842  918  443  39  2000  28 
25 432    135  541  101  1930  613  785  844  418  41  2100  25 
 
26 963    133  431  96  1480  595  706  785  402  50  1960  22 
27 1360    130  378  91  1180  561  828  717  501  54  1440  20 
28 1080    134  442  89  1010  655  2030  686  498  43  625  18 
29 647    145  356  92  ---  1330  2410  777  496  60  367  16 
30 492    191  303  118  ---  2040  2470  735  363  56  257  16 
 
31 410    ---  253  852  ---  1980  ---  654  ---  56  190  --- 

TOTAL 7015.5 5751 15076 5176 45068 41297 27798 56159 25151 3184 10716 1335
MEAN 226.3 191.7 486.3 167.0 1610 1332 926.6 1812 838.4 102.7 345.7 44.50
MAX 1360 353 1370 852 3250 2470 2470 5120 2250 306 2100 148
MIN 3.0 130 221 89 459 561 454 654 363 39 12 16
CFSM 0.41 0.35 0.88 0.30 2.93 2.42 1.68 3.29 1.52 0.19 0.63 0.08
IN. 0.47 0.39 1.02 0.35 3.05 2.79 1.88 3.80 1.70 0.22 0.72 0.09
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 2002, BY WATER YEAR (WY)
MEAN 172.8 239.4 341.6 415.5 591.0 719.3 806.6 728.7 503.5 280.4 150.9 113.6
MAX 2868 2842 2155 2636 1937 2472 2753 3609 2081 1585 1486 2427
(WY) 1927 1986 1928 1950 2001 1979 1922 1908 1974 1993 1981 1926
MIN 1.32 5.50 3.67 3.43 10.0 20.2 57.6 42.6 19.3 3.85 1.76 0.48
(WY) 1989 1915 1964 1977 1931 1931 1931 1934 1934 1988 1988 1988

SUMMARY STATISTICS FOR 2001 CALENDAR YEAR FOR 2002 WATER YEAR WATER YEARS 1908 - 2002
ANNUAL TOTAL 139722.6   243726.5  
ANNUAL MEAN 382.8   667.7   418.7      
HIGHEST ANNUAL MEAN 1105          1927
LOWEST ANNUAL MEAN 68.0       1934
HIGHEST DAILY MEAN 5950          Feb 27 5120          May 15 18700          Oct 4 1926
LOWEST DAILY MEAN 2.9       Sep 30 3.0       Oct 4 0.00     A
ANNUAL SEVEN-DAY MINIMUM 3.3       Sep 28 4.0       Oct 1 0.07     Sep 11 1988
MAXIMUM PEAK FLOW 5670          May 14 19000      B Oct 4 1926
MAXIMUM PEAK STAGE 15.77     May 14 19.06 C Apr 13 1994
INSTANTANEOUS LOW FLOW 2.8       Oct 1,4-5
ANNUAL RUNOFF (CFSM) 0.70 1.21 0.76    
ANNUAL RUNOFF (INCHES) 9.45 16.48 10.34    
10 PERCENT EXCEEDS 897      1980      1100         
50 PERCENT EXCEEDS 175      356      158         
90 PERCENT EXCEEDS 9.1   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