Station list     Available data
ILLINOIS RIVER BASIN


05559600       ILLINOIS RIVER AT CHILLICOTHE, IL

 

LOCATION.-- Lat 40°55'45", long 89°27'42" (NAD of 1927), 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.--

SURFACE-WATER QUALITY
 

SEDIMENT: May 1993 to November 1993, water years 1994 to 2000 (March to December), March 2001 to current year.
 

MISCELLANEOUS: Sediment concentration and particle size, water years 1996-99, 2002-03.
 

REMARKS.-- Water discharge used to compute sediment record are from Illinois River at Henry (station 05558300). Suspended-sediment samples were collected by a local observer twice weekly with additional samples colleced during high runoff periods. Samples were not collected (and data are not published) during periods of ice.
 

EXTREMES FOR PERIOD OF RECORD.--

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 554 mg/L, Aug. 29, 2004; minimum daily, 16 mg/L, Mar. 7, 1998 and Dec. 24, 2003.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 93,800 tons, July 20, 1996; minimum daily, 140 tons, Oct. 30, 2002.
 

EXTREMES FOR CURRENT YEAR.--

SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 554 mg/L, Aug. 29; minimum daily, 16 mg/L, Dec. 24.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 50,300 tons, June 14; minimum daily, 290 tons, Oct. 11.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004
MEAN MEAN MEAN
MEAN CONCEN- SEDIMENT MEAN CONCEN- SEDIMENT MEAN CONCEN- SEDIMENT
DISCHARGE TRATION DISCHARGE DISCHARGE TRATION DISCHARGE DISCHARGE TRATION DISCHARGE
DAY (CFS) (MG/L) (TONS/DAY) (CFS) (MG/L) (TONS/DAY) (CFS) (MG/L) (TONS/DAY)
 
OCTOBER NOVEMBER DECEMBER
1 5270 44 373 5090 37 494 14600 70 2790
2 4470 48 592 6120 39 644 12700 53 1840
3 e5200 48 670 9220 53 1330 11200 29 876
4 4880 49 649 8900 71 1740 8290 28 618
5 4020 50 542 13900 93 3510 8810 33 782
 
6 3490 50 488 15800 98 4180 8690 34 797
7 3380 61 566 14800 73 2940 9530 34 875
8 3550 62 592 12300 57 1890 11100 34 1000
9 4080 42 465 11100 48 1440 11000 28 832
10 e3600 36 353 9850 43 1130 14400 25 1020
 
11 e3000 36 290 9500 38 963 18300 41 2060
12 4930 41 549 8250 41 910 22000 69 4110
13 2830 48 393 7980 46 993 20600 57 3220
14 4380 40 498 5480 52 761 18900 39 2000
15 6510 29 517 7570 57 1170 16300 42 1830
 
16 5720 28 451 6410 67 1160 16400 50 2200
17 5980 30 489 5710 79 1220 15700 44 1870
18 4700 33 415 10700 102 3010 14200 35 1340
19 5760 33 519 19600 152 8210 13600 33 1220
20 e5000 34 458 25100 218 14800 e11500 34 1050
 
21 5480 35 530 27400 211 15500 9400 33 842
22 5140 36 496 23200 160 10200 10000 26 697
23 3680 38 373 20700 105 5820 9290 17 425
24 4230 36 408 20800 81 4520 9000 16 385
25 5460 34 503 21000 66 3720 8980 17 393
 
26 4690 36 449 21800 52 3050 10200 18 493
27 4880 38 495 20400 46 2550 9620 19 497
28 e5000 37 489 19300 43 2260 10300 23 645
29 4820 35 457 15700 42 1780 11000 27 802
30 4000 34 384 16700 56 2520 9420 26 655
 
31 5890 35 559 --- --- --- 11700 23 740
 
TOTAL 144020 --- 15012 420380 --- 104415 386730 --- 38904
 
JANUARY FEBRUARY MARCH
1 11800 --- --- e5300 --- --- 7810 35 752
2 12600 --- --- e4800 --- --- 10900 77 2280
3 12500 --- --- e5200 --- --- 10300 46 1290
4 12400 --- --- e3200 --- --- 11400 33 1000
5 10700 --- --- e5400 --- --- 15700 44 2020
 
6 10500 --- --- e5600 --- --- 28000 142 10800
7 10900 --- --- e5200 --- --- 32700 166 14600
8 10700 --- --- e5700 --- --- 31100 249 20900
9 10400 --- --- e6200 --- --- 28800 246 19300
10 9060 --- --- e4800 --- --- 23600 154 10000
 
11 8800 --- --- e4500 --- --- 25100 117 7960
12 10200 --- --- e5000 --- --- 22000 76 4520
13 9240 --- --- e5400 --- --- 18500 56 2800
14 8670 --- --- e5000 --- --- 18900 41 2070
15 7850 --- --- e4800 --- --- 18700 54 2730
 
16 8510 --- --- e4500 --- --- 16800 64 2900
17 8290 --- --- e4100 --- --- 14400 50 1930
18 7870 --- --- 4960 --- --- 14400 62 2390
19 6350 --- --- 5900 --- --- 13100 71 2540
20 5660 --- --- 6210 --- --- 14500 63 2480
 
21 5570 --- --- 8910 --- --- 12900 81 2810
22 6240 --- --- 9940 --- --- 10300 93 2590
23 5830 --- --- 12000 --- --- 9630 75 1970
24 5830 --- --- 12600 --- --- 9330 54 1370
25 5000 --- --- 12100 --- --- 9560 37 949
 
26 5570 --- --- 11400 --- --- 12300 56 1880
27 4150 --- --- 11000 --- --- 13300 67 2420
28 5160 --- --- 10100 --- --- 18000 88 4330
29 e4400 --- --- 9830 --- --- 23600 133 8570
30 e5200 --- --- --- --- --- 28800 172 13300
 
31 e3000 --- --- --- --- --- 29800 131 10600
 
TOTAL 248950 --- --- 199650 --- --- 554230 --- 166051
 
APRIL MAY JUNE
1 29300 110 8660 11000 52 1560 45700 279 34300
2 28500 92 7070 11400 49 1510 48500 249 32600
3 27100 87 6400 11500 50 1560 43700 206 24400
4 24000 82 5330 8840 71 1700 38900 139 14700
5 20700 66 3700 9310 93 2320 34700 66 6250
 
6 19200 50 2570 8550 95 2200 31600 44 3790
7 18000 47 2300 9160 92 2280 28300 53 4030
8 16900 45 2060 7970 88 1890 26300 69 4880
9 14800 42 1700 8390 66 1490 24100 82 5340
10 13900 42 1590 8760 40 957 22000 77 4590
 
11 12900 48 1670 9030 35 859 24100 85 5540
12 12300 55 1830 8770 37 875 28200 146 11200
13 11900 57 1840 11700 40 1250 40100 267 29800
14 9180 57 1410 17200 68 3260 49800 375 50300
15 7570 56 1050 22300 100 6030 49400 132 17700
 
16 8000 54 1170 24200 105 6840 45000 102 12400
17 6800 53 969 23600 90 5710 42400 58 6620
18 6430 52 816 24100 105 6820 37400 87 8660
19 8850 54 1290 21400 70 4080 34200 65 6090
20 7290 58 1140 20900 70 3970 29600 46 3660
 
21 10600 84 2430 21300 88 5040 28000 50 3780
22 10300 117 3270 20900 106 5980 27700 52 3900
23 10400 121 3400 23500 138 8750 24500 49 3250
24 10200 110 3040 25800 108 7510 25700 44 3040
25 9620 101 2640 25100 99 6690 19500 35 1860
 
26 12500 122 4130 24100 95 6170 14700 46 1850
27 12500 113 3940 23600 72 4610 11900 59 1920
28 7840 65 1380 23400 65 4090 11700 60 1900
29 11300 61 1870 21300 64 3700 11500 59 1830
30 11500 57 1770 22600 198 12500 10400 61 1710
 
31 --- --- --- 32800 280 24800 --- --- ---
 
TOTAL 410380 --- 82435 542480 --- 147001 909600 --- 311890
 
JULY AUGUST SEPTEMBER
1 11200 68 2050 e5000 31 418 23400 389 24600
2 8960 76 1850 6630 35 549 21800 326 19200
3 7290 84 1650 5150 43 584 20100 299 16300
4 11400 84 2600 10400 52 1460 17500 275 13000
5 9330 82 2060 10100 57 1550 14800 250 10000
 
6 10100 73 2030 9960 57 1530 13800 226 8420
7 10200 77 2110 7540 56 1130 13400 199 7250
8 8700 72 1710 8220 53 1170 11100 173 5180
9 7160 64 1250 7840 30 634 8580 147 3410
10 9360 58 1460 6480 40 701 8080 120 2640
 
11 7570 62 1260 7050 44 870 8180 94 2080
12 e9000 60 1480 6180 32 529 7030 68 1290
13 e11000 56 1660 5500 31 466 6470 49 860
14 e10000 55 1480 5290 36 504 7000 52 977
15 e9000 54 1310 5860 63 1000 5970 56 903
 
16 e8000 51 1100 4760 42 538 9270 60 1500
17 e7400 47 938 5020 48 651 7190 64 1240
18 e8000 43 920 5470 50 734 6850 68 1250
19 e6500 37 649 5990 50 817 5520 72 1070
20 e7200 46 889 7520 51 1040 5340 76 1090
 
21 e9000 58 1400 6290 52 881 5550 77 1160
22 e8500 67 1530 6440 53 915 4950 72 972
23 e7800 61 1280 6380 53 920 5170 67 935
24 e7000 53 1010 6550 54 957 5390 62 897
25 e6500 46 817 8360 57 1280 4450 56 677
 
26 e6000 42 688 9990 111 2980 4310 51 591
27 e5400 36 521 14200 196 7670 5040 45 618
28 e5100 28 385 20000 356 20100 5090 42 572
29 e5200 25 353 28600 554 42800 3830 44 455
30 e5500 24 363 28800 407 31600 4290 46 495
 
31 e6000 27 441 26700 412 29600 --- --- ---
 
TOTAL 249370 --- 39244 298270 --- 156578 269450 --- 129632
e Estimated


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data