Station list
Available data
ILLINOIS RIVER BASIN
05572000 SANGAMON RIVER AT MONTICELLO, IL
LOCATION.--Lat 40°01'51", long 88°35'20", 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.--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.
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 and crest-stage gage. Datum of gage is 625.89 ft above sea level. 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.
REMARKS.--Records good except those for estimated daily discharges, which are poor. Recording raingage and gage-height
telemeter at station. Water temperature and specific conductance continuously recorded at station for the National Water-Quality
Assessment Program.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
|
|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP
|
|---|
|
|
| 1 | 12 | 16 | 11 | e8.0 | 573 | 293 | 189 | 480 | 235 | 374 | 34 | 19
|
| 2 | 12 | 26 | 11 | e10 | 751 | 314 | 188 | 436 | 531 | 349 | 31 | 18
|
| 3 | 9.6 | 29 | 11 | e9.0 | 822 | 442 | 189 | 409 | 909 | 446 | 28 | 17
|
| 4 | 9.1 | 28 | 11 | e8.0 | 784 | 625 | 192 | 384 | 1120 | 377 | 26 | 16
|
| 5 | 11 | 24 | 11 | e7.5 | 613 | 613 | 184 | 375 | 1560 | 288 | 25 | 15
|
|
|
| 6 | 13 | 21 | 11 | e8.5 | 471 | 554 | 197 | 359 | 1310 | 239 | 24 | 14
|
| 7 | 12 | 19 | 12 | e9.5 | 671 | 559 | 190 | 353 | 971 | 206 | 25 | 15
|
| 8 | 13 | 18 | 11 | e9.0 | 1500 | 553 | 192 | 316 | 700 | 181 | 40 | 14
|
| 9 | 12 | 19 | 11 | e8.5 | 1850 | 519 | 272 | 282 | 543 | 161 | 29 | 14
|
| 10 | 17 | 22 | 10 | e8.1 | 1860 | 459 | 322 | 261 | 455 | 144 | 23 | 13
|
|
|
| 11 | 14 | 19 | 9.6 | e7.8 | 1710 | 397 | 406 | 247 | 405 | 128 | 22 | 13
|
| 12 | 13 | 21 | 9.3 | e7.5 | 1370 | 359 | 411 | 240 | 364 | 115 | 36 | 13
|
| 13 | 12 | 22 | 8.7 | e7.2 | 1100 | 386 | 370 | 300 | 558 | 103 | 418 | 13
|
| 14 | 11 | 32 | 8.7 | e7.1 | 824 | 413 | 312 | 444 | 876 | 94 | 148 | 13
|
| 15 | 11 | 29 | 8.2 | e7.0 | 635 | 417 | 439 | 587 | 967 | 86 | 69 | 12
|
|
|
| 16 | 10 | 26 | 7.9 | e7.0 | 552 | 428 | 1330 | 565 | 1080 | 77 | 52 | 11
|
| 17 | 8.8 | 23 | 7.6 | e9.0 | 510 | 471 | 2270 | 489 | 1030 | 74 | 39 | 11
|
| 18 | 9.8 | 20 | 7.7 | e15 | 484 | 486 | 3190 | 472 | 628 | 69 | 32 | 9.1
|
| 19 | 11 | 18 | 9.2 | 23 | 446 | 447 | 3410 | 455 | 451 | 64 | 29 | 8.9
|
| 20 | 11 | 16 | 7.9 | 26 | 395 | 377 | 2760 | 402 | 378 | 67 | 26 | 10
|
|
|
| 21 | 11 | 15 | 9.5 | 38 | 347 | 340 | 2200 | 359 | 334 | 78 | 25 | 10
|
| 22 | 11 | 15 | 9.1 | 175 | 311 | 315 | 1590 | 448 | 300 | 61 | 23 | 9.6
|
| 23 | 11 | 14 | 9.0 | 902 | 293 | 291 | 1120 | 413 | 301 | 52 | 23 | 9.2
|
| 24 | 12 | 13 | 8.9 | 2030 | 279 | 268 | 859 | 367 | 485 | 47 | 24 | 8.9
|
| 25 | 12 | 12 | 7.6 | 2890 | 270 | 247 | 730 | 330 | 802 | 43 | 25 | 8.6
|
|
|
| 26 | 15 | 10 | 7.2 | 2410 | 253 | 228 | 647 | 299 | 838 | 39 | 41 | 8.3
|
| 27 | 14 | 9.5 | 6.6 | 1980 | 251 | 213 | 611 | 268 | 771 | 48 | 32 | 8.5
|
| 28 | 14 | 9.3 | 6.2 | 1310 | 259 | 206 | 686 | 245 | 684 | 44 | 40 | 15
|
| 29 | 14 | 9.2 | 6.0 | 891 | --- | 202 | 633 | 229 | 559 | 51 | 32 | 13
|
| 30 | 14 | 11 | 5.1 | 674 | --- | 193 | 538 | 218 | 433 | 48 | 26 | 13
|
|
|
| 31 | 13 | --- | e6.0 | 528 | --- | 187 | --- | 214 | --- | 39 | 22 | ---
|
| TOTAL | 373.3 | 566.0 | 276.0 | 14030.7 | 20184 | 11802 | 26627 | 11246 | 20578 | 4192 | 1469 | 373.1
|
| MEAN | 12.0 | 18.9 | 8.90 | 453 | 721 | 381 | 888 | 363 | 686 | 135 | 47.4 | 12.4
|
| MAX | 17 | 32 | 12 | 2890 | 1860 | 625 | 3410 | 587 | 1560 | 446 | 418 | 19
|
| MIN | 8.8 | 9.2 | 5.1 | 7.0 | 251 | 187 | 184 | 214 | 235 | 39 | 22 | 8.3
|
| CFSM | .02 | .03 | .02 | .82 | 1.31 | .69 | 1.61 | .66 | 1.25 | .25 | .09 | .02
|
| IN. | .03 | .04 | .02 | .95 | 1.37 | .80 | 1.80 | .76 | 1.39 | .28 | .10 | .03
|
e Estimated
| STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 1999, BY WATER YEAR (WY)
|
|---|
| MEAN | 176 | 244 | 350 | 425 | 570 | 712 | 818 | 728 | 501 | 290 | 153 | 118
|
| MAX | 2868 | 2842 | 2155 | 2636 | 1899 | 2472 | 2753 | 3609 | 2081 | 1585 | 1486 | 2427
|
| (WY) | 1927 | 1986 | 1928 | 1950 | 1959 | 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 | .48
|
| (WY) | 1989 | 1915 | 1964 | 1977 | 1931 | 1931 | 1931 | 1934 | 1934 | 1988 | 1988 | 1988
|
| SUMMARY STATISTICS | FOR 1998 CALENDAR YEAR | FOR 1999 WATER YEAR | WATER YEARS 1908 - 1999 |
|---|
| ANNUAL TOTAL | 240903.3 | | 111717.1 | | |
|
| ANNUAL MEAN | 660 | | 306 | | 420 |
|
| HIGHEST ANNUAL MEAN | | | | | 1105 | 1927
|
| LOWEST ANNUAL MEAN | | | | | 68.0 | 1934
|
| HIGHEST DAILY MEAN | 6160 | Jun 19 | 3410 | Apr 19 | 18700 | Oct 4 1926
|
| LOWEST DAILY MEAN | 5.1 | Dec 30 | 5.1 | Dec 30 | .00 | A
|
| ANNUAL SEVEN-DAY MINIMUM | 6.4 | Dec 25 | 6.4 | Dec 25 | .07 | Sep 11 1988
|
| INSTANTANEOUS PEAK FLOW | | | 3610 | Apr 19 | 19000 B | Oct 4 1926
|
| INSTANTANEOUS PEAK STAGE | | | 13.73 | Apr 19 | 19.06 C | Apr 13 1994
|
| INSTANTANEOUS LOW FLOW | | | 2.7 D | Dec 30 | |
|
| ANNUAL RUNOFF (CFSM) | 1.20 | | .56 | | .76 |
|
| ANNUAL RUNOFF (INCHES) | 16.29 | | 7.56 | | 10.38 |
|
| 10 PERCENT EXCEEDS | 2020 | | 776 | | 1100 |
|
| 50 PERCENT EXCEEDS | 261 | | 67 | | 160 |
|
| 90 PERCENT EXCEEDS | 11 | | 9.0 | | 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.
D - Result of freezeup.