Station list     Available data
ILLINOIS RIVER BASIN


05583000       SANGAMON RIVER NEAR OAKFORD, IL



LOCATION.-- Lat 40°07'26", long 89°59'06", in NW1/4SE1/4 sec.3, T.19 N., R.8 W., Mason County, Hydrologic Unit 07130008, on right bank at downstream side of bridge on State Highway 97, 300 ft upstream from a railroad bridge, 0.8 mi downstream from Crane Creek, 1.8 mi northwest of Oakford, and at mile 25.7.

DRAINAGE AREA.-- 5,093 mi2.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1909 to October 1911, December 1911 to March 1912, August 1914 to June 1919, March 1921 to September 1922, October 1928 to December 1933, October 1939 to current year. Monthly discharge only for some periods, published in WSP 1308.

 

STAGE: Water years 1994-2000.

SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1978-94 and 1998.

 

SEDIMENT: Water years 1981, 1983-86, 1995-97.

 

SPECIFIC CONDUCTANCE: Water years 1979-81.

 

WATER TEMPERATURE: Water years 1976-77, 1979-81.

 

MISCELLANEOUS: Contaminants in streambed sediments, August 1996; contaminants in fish tissue, August 1996; streambank sediment size, October 1997; streambed sediment size, October 1997.

BIOLOGICAL: Algae, water year 1981; benthic macroinvertebrates, September 1996; fish, July 1997.

REVISED RECORDS.-- WSP 715: 1922(M). WSP 1175: 1912(M). WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and artificial control. Datum of gage is 452.88 ft above sea level (U.S. Army Corps of Engineers bench mark). Prior to Jan. 1, 1934, nonrecording gage at site 2.4 mi upstream at datum 458.66 ft above sea level. Oct. 1, 1939, to May 14, 1940, nonrecording gage at present site at sea level.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 123,000 ft3/s, May 20, 1943, gage height, 25.63 ft.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 3,540 mg/L, June 9, 1984; minimum daily, 1 mg/L, Dec. 7, 8, 1996, Jan. 11, 1997.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 120,000 tons, Feb. 24, 1985; minimum daily, 1.6 tons, Dec. 7, 1996.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1566 364 358 411 e300 580 982 1410 3470 5440 1060 595 
2501 369 363 409 e310 562 872 1390 3290 4490 1080 565 
3493 374 367 398 e320 663 830 1390 2970 3890 1010 540 
4484 373 370 401 e330 650 802 1460 2490 3490 955 518 
5532 367 424 410 e340 627 791 1460 2300 4490 975 499 
 
6492 360 559 405 e350 619 732 1290 1950 6240 1320 484 
7451 357 665 402 358 606 716 1130 1830 6720 1250 477 
8442 362 579 417 359 617 711 1030 1770 6370 1390 472 
9432 376 533 414 366 593 748 993 1770 5450 1350 464 
10506 382 493 415 383 548 732 1030 1570 4680 1230 460 
 
11550 378 476 419 416 513 865 1090 1440 5180 1090 459 
12543 371 477 400 435 500 862 1060 1630 4640 969 459 
13498 366 448 383 446 495 764 1130 1830 4320 870 518 
14460 360 438 374 438 501 720 1190 2380 4090 798 598 
15442 356 437 369 438 506 679 1250 2280 3710 741 527 
 
16425 356 443 364 413 522 660 1260 2320 3120 697 526 
17413 359 444 379 404 712 660 1390 2480 2680 671 496 
18412 366 474 365 480 667 681 1380 2270 2410 652 481 
19413 361 456 360 657 641 707 1160 1800 2250 893 475 
20414 356 439 e320 961 820 908 1260 1810 2100 821 464 
 
21418 353 e420 e300 1020 1140 1210 1180 9080 1950 764 466 
22398 351 e400 e280 900 1440 1940 1210 12100 1750 691 473 
23389 355 e390 e270 794 1640 1690 1210 10400 1590 652 457 
24385 362 e390 e260 742 1720 1470 1110 8550 1460 764 456 
25383 367 e400 e250 707 1460 1790 1000 8930 1310 991 513 
 
26375 391 e380 e240 683 1180 2270 1040 9810 1310 885 607 
27370 379 e360 e250 621 1040 2360 1580 9740 1250 728 654 
28367 366 e360 e260 596 1040 2300 2690 8770 1120 685 605 
29370 364 e370 e270 585 1230 2000 2730 7700 1060 692 695 
30366 360 394 e280 --- 1180 1620 3530 6560 1110 677 868 
 
31357 --- 400 e290 --- 1090 --- 3850 --- 1100 634 --- 

TOTAL13647109611350710765151522610234072458831352901007702798515871
MEAN4403654363475228421136148045103251903529
MAX56639166541910201720236038501210067201390868
MIN35735135824030049566099314401060634456
CFSM.09.07.09.07.10.17.22.29.89.64.18.10
IN..10.08.10.08.11.19.25.34.99.74.20.12

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1910 - 2000, BY WATER YEAR (WY)
MEAN126017182517335343405314635662234813287316351121
MAX121801318018250195801401019590251403057020730114801500013180
(WY)199419861983195019681979192219431974198119811993
MIN11898.110278.918628752659869930218470.0
(WY)191519151915191819311941193119541988191119221922

SUMMARY STATISTICSFOR 1999 CALENDAR YEARFOR 2000 WATER YEARWATER YEARS 1910 - 2000
ANNUAL TOTAL1321953     450005         
ANNUAL MEAN3622     1230         3457         
HIGHEST ANNUAL MEAN8523         1993
LOWEST ANNUAL MEAN516         1954
HIGHEST DAILY MEAN15000         Jun 1512100             Jun 22120000         May 20 1943
LOWEST DAILY MEAN351         Nov 22240      A    Jan 2645      BC
ANNUAL SEVEN-DAY MINIMUM357         Nov 17257             Jan 2345         Jan 21 1918
INSTANTANEOUS PEAK FLOW12500             Jun 22123000         May 20 1943
INSTANTANEOUS PEAK STAGE12.99        Jun 2225.63    May 20 1943
ANNUAL RUNOFF (CFSM).71.24    .68    
ANNUAL RUNOFF (INCHES)9.663.29    9.22    
10 PERCENT EXCEEDS10700     2430         8930         
50 PERCENT EXCEEDS1460     624         1600         
90 PERCENT EXCEEDS372     361         299         
A - Estimated, but may have been less during period of ice effect Jan. 20 to Feb. 6.
B - Estimated.
C - Jan. 21-31, 1918.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data