Station list     Available data
ILLINOIS RIVER BASIN


05559600                               ILLINOIS RIVER AT CHILLICOTHE, IL



LOCATION.--Lat 40°55'45", long 89°27'42", in NW1/4 sec.22, T.11 N., R.9 W., Peoria County, Hydrologic Unit 07130001, at center of Atchison, Topeka and Sante Fe Railroad bridge, 1 mi north of Chillicothe and at mile 181.9.

DRAINAGE AREA.--Not determined.

PERIOD OF RECORD.--May 1993 to current year.

PERIOD OF DAILY RECORD.--
SUSPENDED SEDIMENT: May 1993 to current year.

REMARKS.--Records of discharge are given for Illinois River at Henry (station 05558300). Suspended-sediment samples were collected by a local observer once weekly with additional samples collected during high runoff periods. Samples were not collected (and data are not published) during periods of ice.

EXTREMES FOR PERIOD OF DAILY RECORD.--
SEDIMENT CONCENTRATIONS: Maximum daily, 491 mg/L, July 20, 1996; minimum daily, 16 mg/L, Mar. 7, 1998.
SEDIMENT LOADS: Maximum daily, 93,800 tons, July 20, 1996; minimum daily, 177 tons, Oct. 5, 1997.

EXTREMES FOR CURRENT YEAR.--
SEDIMENT CONCENTRATIONS: Maximum daily, 204 mg/L, June 13; minimum daily, 16 mg/L, Mar. 7.
SEDIMENT LOADS: Maximum daily, 24,800 tons, Mar. 20; minimum daily, 177 tons, Oct. 5.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
MEANMEANMEAN
MEANCONCEN-SEDIMENTMEANCONCEN-SEDIMENTMEANCONCEN-SEDIMENT
DISCHARGETRATIONDISCHARGEDISCHARGETRATIONDISCHARGEDISCHARGETRATIONDISCHARGE
DAY(CFS)(MG/L)(TONS/DAY)(CFS)(MG/L)(TONS/DAY)(CFS)(MG/L)(TONS/DAY)
 
OCTOBERNOVEMBERDECEMBER



16260385687600316789600461180
2358028260715034631874042988
3451022236704036682939037940
4490022305689032585896033818
5327023177672038697828030651
 
6e350027259687041766851030673
7e560033499669039721795030629
8707034564681033628733031619
9655035646634028483661028501
10588041635671024422789024524
 
11568048722603024401872021519
12360056635527025353808019418
13587058913569026386805020437
14605057931535026383767021434
15469050690620026442675023409
 
16551044611604027435720033661
17483042531479027358688029533
18507043591586026419641023413
19462043537508026365667024456
20517043592523025368741027535
 
21569044679567024373751029590
22491042558537023347601028438
23421041494533023326771025541
24579042633436023248798023484
25566045636470024316911020513
 
265560487236140315351060018518
277230468924810435791180017547
28909042102073905711901030023640
2972103463387305713501130030896
30e500029391113005115701050035974
 
31659028480---------969039997
 
TOTAL169150---18041188160---17037259610---19476

 
JANUARYFEBRUARYMARCH



16580------14800------19000261330
27400------16500------18300261280
39680------19100------17800251210
412700------21300------17200251150
519200------20000------16300241030
 
624200------18700------1560019816
728900------17700------1570016681
830500------16700------1650020895
932400------16500------21000372160
1037100------15700------25300533720
 
1136100------17100------28900624820
1234600------23400------27900735480
13e31500------26300------26800685000
14e29500------25700------27900654860
15e27000------23900------25800533680
 
16e25000------23300------25000442940
17e23000------22600------24700493330
18e22000------22400------34800757250
19e20500------24200------533009113800
20e19500------24700------6690013724800
 
2118400------23400------628009015200
2217000------22600------587007411700
23e16000------21500------58100548520
24e15200------20500------53900466760
25e14700------19100------48500384970
 
26e14300------18600------43600384480
27e14000------18200------40100374060
2813400------19600------41900384330
2913700---------------35200363360
3013700---------------34200323000
 
3113900---------------34900363410
 
TOTAL641660------574100------1036600---160022

 
APRILMAYJUNE



1368004039402350045288012700712310
2408004347102610092656013800792970
340200485150257001701180012300872850
435900454290244001661090011900872790
53270041362023400107680011500852620
 
6305003125802530062430011200832560
7283002821503090048427011400812460
82770033250053700751160010200802280
93290045402080800721590012600943200
1033900413710859006114100136001174360
 
113270037323074100489570203001468430
1228900342660619003863502900018214600
1331200312610571004060903590020420000
1430700292370519003650503790015115500
1528300241850452003339703460011210400
 
1628500241890e42500384490315001129430
1727600251840e3850046483031200685730
1827500251840e3500047441029000826390
1927200251850e3200040338030100927470
20261002618602830036269029300644980
 
21265003323802560040279028400483630
22280003425302310046278025400382590
23279003224402070047254023200362260
24275003425401850046235020000382060
25257003725901960046244018300482390
 
26261004330301760051242018700643190
27255004933201660057258018500854300
282320050309015300562290191001145910
292240049293016100552360169001315810
30222004627601250058180018400673300
 
31---------15200632720---------
 
TOTAL883400---862801067000---167010636900---166770

 
JULYAUGUSTSEPTEMBER



1189006432706140386676880541030
217600703320663042710710048913
316900753430624046782577043677
4180008742406930521020632042708
518200100491014700602510595040621
 
620100114624017900844060587039653
722800125770016600863840828041946
8277001371040015800100428011100441300
929300144113001670011953909810491250
10277009872901660012756208730521240
 
11264001087660154001355600e780045956
1224600714700140001415230e600039637
132210059351011400972930e560034517
141930056289010400591640e580033510
15170008237609670441130e550032480
 
16161009641309510511280e610035584
17138008431508610581410e670037673
18125006922808280551250e600032515
19118005617708450491120e530027387
2012200612030737044847e480026337
 
2111500742260681041759e530026372
2212800893070671040709583026407
23130001133930641040703421025301
24129001123890758042818404024277
251180010332809890431140458024280
 
26113008024608760451080327038453
27104006216808900481160601028451
2886405512909400541380365023210
2987405011708450651500526040622
307270417808970761790479038513
 
317060367007760641350---------
 
TOTAL508410---122490316970---63705182350---18820
e Estimated

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Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data