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
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 16  15  21  107  e41  e57  111  126  232  139  118  698 
2 15  13  22  127  e45  e60  104  123  193  137  108  979 
3 16  13  22  130  e50  e56  97  121  181  127  148  1150 
4 19  15  21  95  e60  e54  96  133  172  116  278  862 
5 16  20  21  107  e72  e56  99  397  163  104  272  500 
 
6 15  19  21  89  e65  e62  233  730  155  94  218  334 
7 15  21  18  83  e56  e72  458  726  153  254  151  252 
8 14  22  19  82  e51  e82  527  552  143  413  115  204 
9 15  21  19  83  e46  e96  639  562  138  263  96  171 
10 16  19  19  79  e41  e110  555  933  134  945  84  147 
 
11 e15  23  20  54  e38  e130  428  1550  245  2230  76  129 
12 e14  28  20  e62  e35  e160  347  1680  1160  2750  69  114 
13 e13  23  20  e60  e31  182  292  1550  1670  2850  64  103 
14 e15  21  19  e56  e34  230  251  1230  1540  2510  60  96 
15 12  20  19  e52  e38  198  223  940  1370  1470  55  91 
 
16 12  21  21  e49  e35  179  207  798  1320  601  54  86 
17 11  23  21  e46  e32  161  202  734  1100  367  53  81 
18 15  24  37  e44  e30  147  185  590  695  338  46  75 
19 17  23  62  e41  e32  144  168  486  505  598  41  69 
20 11  24  92  e38  e37  181  168  468  404  829  37  65 
 
21 12  24  115  e36  e44  186  168  383  338  755  34  63 
22 11  26  114  e34  e56  170  165  342  294  683  31  64 
23 11  25  93  e32  e80  197  152  313  263  497  28  61 
24 12  25  76  e31  e100  207  140  286  235  358  26  59 
25 17  25  63  e30  e85  183  142  265  214  292  25  57 
 
26 14  24  67  e30  e73  157  146  246  197  239  23  67 
27 14  24  53  e31  e76  142  150  227  181  199  22  85 
28 13  22  54  e32  e60  140  146  211  167  178  20  267 
29 17  22  53  e33  ---  132  135  205  157  160  38  266 
30 14  22  58  e35  ---  119  128  203  147  144  38  199 
 
31 15  ---  89  e38  ---  114  ---  341  ---  132  207  --- 

TOTAL 442 647 1369 1846 1443 4164 6862 17451 13866 20772 2635 7394
MEAN 14.3 21.6 44.2 59.5 51.5 134 229 563 462 670 85.0 246
MAX 19 28 115 130 100 230 639 1680 1670 2850 278 1150
MIN 11 13 18 30 30 54 96 121 134 94 20 57
CFSM 0.03 0.04 0.08 0.11 0.09 0.24 0.42 1.02 0.84 1.22 0.15 0.45
IN. 0.03 0.04 0.09 0.12 0.10 0.28 0.46 1.18 0.94 1.40 0.18 0.50
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 2003, BY WATER YEAR (WY)
MEAN 171 237 338 412 585 713 800 727 503 285 150 115
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 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1908 - 2003
ANNUAL TOTAL 218342      78891     
ANNUAL MEAN 598      216      416         
HIGHEST ANNUAL MEAN 1105          1927
LOWEST ANNUAL MEAN 68.0       1934
HIGHEST DAILY MEAN 5120          May 15 2850          Jul 13 18700          Oct 4 1926
LOWEST DAILY MEAN 11          A 11          A 0.00     B
ANNUAL SEVEN-DAY MINIMUM 13          Oct 17 13          Oct 17 0.07     Sep 11 1988
MAXIMUM PEAK FLOW 2900          Jul 13 19000      C Oct 4 1926
MAXIMUM PEAK STAGE 13.99     Jul 13 19.06 D Apr 13 1994
INSTANTANEOUS LOW FLOW 10          E
ANNUAL RUNOFF (CFSM) 1.09 0.39 0.76    
ANNUAL RUNOFF (INCHES) 14.77 5.34 10.29    
10 PERCENT EXCEEDS 1980      553      1090         
50 PERCENT EXCEEDS 148      91      157         
90 PERCENT EXCEEDS 16      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