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, 491 mg/L, July 20, 1996; minimum daily, 16 mg/L, Mar. 7, 1998.

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, 184 mg/L, May 12; minimum daily, 17 mg/L, March 1.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 18,300 tons, May 12; minimum daily, 140 tons, Oct. 30.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
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 4710 48 589 2730 24 179 2550 28 192
2 4720 49 624 2880 27 212 4630 26 316
3 3960 31 333 2240 29 179 3240 25 225
4 4840 42 550 2400 28 179 2760 27 206
5 7470 50 1000 3290 26 225 2930 37 290
 
6 6640 31 560 3150 24 200 e3200 35 304
7 6090 25 414 e2700 23 171 e3100 34 286
8 5310 37 532 2500 24 160 3570 53 512
9 5830 41 636 2530 38 257 3530 44 424
10 5030 27 374 4200 39 440 2930 28 223
 
11 4520 23 281 3210 27 235 3310 30 266
12 4250 23 264 2940 26 205 2830 36 279
13 3880 23 243 2850 28 213 3220 42 366
14 4520 25 303 3580 28 269 2600 38 268
15 3760 27 278 3650 28 276 2950 32 251
 
16 3300 29 263 3330 28 253 3570 33 313
17 3620 30 292 3390 29 261 3170 36 308
18 e4400 30 355 3770 29 297 e7000 --- ---
19 3930 30 319 2880 30 232 7900 --- ---
20 3650 30 298 4160 27 298 5870 --- ---
 
21 e4300 51 593 4540 23 278 6170 --- ---
22 3640 50 494 3630 19 188 5050 --- ---
23 2720 45 334 e3000 21 168 5470 --- ---
24 2810 55 421 4830 24 310 5070 --- ---
25 2510 45 307 2520 27 188 4060 --- ---
 
26 4210 41 466 2340 30 192 4430 --- ---
27 3830 27 279 3260 32 278 3100 --- ---
28 2680 23 165 2440 33 217 3800 --- ---
29 3000 22 179 3660 32 315 4240 --- ---
30 2340 22 140 3310 30 269 4020 --- ---
 
31 2710 22 161 --- --- --- 5000 --- ---
 
TOTAL 129180 --- 12047 95910 --- 7144 125270 --- ---
 
JANUARY FEBRUARY MARCH
1 3370 --- --- e3300 --- --- 4160 17 192
2 4260 --- --- 4220 --- --- 4060 19 205
3 3910 --- --- 2880 --- --- 4080 21 228
4 5080 --- --- 3280 --- --- 4070 22 247
5 5090 --- --- 3850 --- --- 3520 22 207
 
6 4690 --- --- 3580 --- --- 4110 24 269
7 e2800 --- --- 3600 --- --- 3800 21 218
8 3990 --- --- 4240 --- --- 5930 27 430
9 4720 --- --- 3510 --- --- 3720 24 251
10 3330 --- --- 4310 --- --- 5560 26 389
 
11 3050 --- --- 3650 --- --- 5000 32 430
12 e2400 --- --- 3390 --- --- 5090 35 482
13 4460 --- --- 4270 --- --- 5710 33 505
14 2760 --- --- 3140 --- --- 6390 31 525
15 3010 --- --- 3660 --- --- 7160 31 603
 
16 2340 --- --- 3390 --- --- 6440 33 567
17 2440 --- --- 3060 --- --- 6070 34 554
18 3340 --- --- 3180 --- --- 5900 35 558
19 e2500 --- --- 3500 --- --- 5710 74 1140
20 e2800 --- --- 2980 --- --- 7610 104 2130
 
21 e3300 --- --- 2800 --- --- 7420 51 1010
22 e2700 --- --- 4330 --- --- 7790 65 1370
23 e2300 --- --- 2730 --- --- 6850 44 815
24 e2800 --- --- 3900 --- --- 6340 33 573
25 e3800 --- --- 4440 --- --- 7820 50 1050
 
26 e2800 --- --- 4060 --- --- 6780 59 1090
27 e3200 --- --- 4350 --- --- 7420 58 1160
28 e2800 --- --- 4460 --- --- 7880 63 1340
29 e3000 --- --- --- --- --- 7600 51 1050
30 e3300 --- --- --- --- --- 6940 39 730
 
31 e2700 --- --- --- --- --- 6090 38 619
 
TOTAL 103040 --- --- 102060 --- --- 183020 --- 20937
 
APRIL MAY JUNE
1 5930 38 609 12600 73 2530 11000 59 1770
2 5460 38 561 17200 97 4500 11500 66 2050
3 6290 38 644 16100 97 4200 11700 77 2450
4 8540 47 1100 15300 99 4120 10600 82 2350
5 11500 63 1950 19800 125 6720 9930 83 2230
 
6 13300 79 2860 22700 127 7760 10500 74 2090
7 12700 95 3270 23800 118 7600 9490 62 1590
8 14100 94 3580 21800 72 4270 8750 50 1190
9 13600 81 2980 e25000 114 7710 9640 55 1420
10 13800 68 2530 28800 133 10400 8720 61 1440
 
11 12800 55 1880 32700 91 8080 9630 55 1430
12 11500 44 1380 36600 184 18300 8820 48 1140
13 10200 49 1340 33900 120 11000 8210 46 1020
14 8570 54 1240 31000 79 6580 8180 57 1260
15 7030 47 886 28800 90 6990 10600 60 1690
 
16 9640 57 1470 27000 92 6690 12200 44 1450
17 8510 51 1170 26200 88 6200 12200 43 1420
18 7680 42 874 24000 84 5430 10900 44 1280
19 6460 40 704 21300 80 4610 13500 42 1510
20 6690 48 868 22800 82 5060 9370 40 1010
 
21 7510 47 948 19600 73 3860 9920 38 1000
22 6820 43 786 17900 58 2810 8050 37 818
23 5970 42 681 16000 72 3090 7490 38 776
24 6700 47 848 14900 89 3590 6430 40 704
25 6240 42 700 14000 86 3270 6250 42 715
 
26 5700 37 565 12700 80 2740 7160 40 774
27 5230 36 516 12100 69 2230 4890 37 492
28 6400 48 832 11100 60 1780 6570 37 645
29 5100 46 634 10600 58 1670 6970 37 699
30 5140 46 642 8230 67 1500 5200 38 537
 
31 --- --- --- 12400 69 2310 --- --- ---
 
TOTAL 255110 --- 39048 636930 --- 167600 274370 --- 38950
 
JULY AUGUST SEPTEMBER
1 5380 39 570 16600 60 2730 6380 28 481
2 5290 41 580 16600 60 2700 7910 28 595
3 4460 42 506 16700 60 2690 7140 28 533
4 5730 42 651 17600 108 5140 7680 27 564
5 5950 39 628 16600 96 4280 7650 29 596
 
6 6980 36 689 15400 91 3810 7580 31 632
7 10300 47 1320 14900 96 3840 6260 32 539
8 12600 61 2110 12600 113 3870 6980 33 625
9 17200 75 3500 11400 93 2880 5850 32 501
10 21900 76 4520 10100 63 1720 5660 29 439
 
11 26800 47 3360 9690 52 1370 5540 28 419
12 29400 91 7250 9690 52 1360 4260 36 418
13 27800 90 6770 8670 53 1240 e5100 49 676
14 26600 99 7130 8300 54 1210 e6100 49 811
15 28200 98 7550 7440 55 1100 e5200 48 679
 
16 30300 106 8660 7050 52 986 5030 47 639
17 29400 99 7820 7540 48 970 e4300 43 506
18 30400 52 4280 6740 44 798 e4500 39 478
19 32500 93 8210 5790 41 646 4700 44 554
20 36100 145 14100 5580 39 593 5360 47 681
 
21 34800 139 13100 6010 43 692 4700 42 537
22 32100 118 10300 7030 50 937 e4200 38 437
23 31800 104 8920 4780 43 555 e4900 48 628
24 29300 99 7870 5670 55 840 4640 46 573
25 26400 85 6050 5250 52 743 3900 57 597
 
26 23500 61 3920 6010 59 955 5240 71 1000
27 22200 67 4210 5190 53 748 6060 80 1300
28 e25000 65 4410 4630 45 558 5500 82 1230
29 22800 40 2600 6300 43 727 4770 82 1060
30 19800 49 2610 4160 33 376 5810 79 1180
 
31 17700 58 2770 5350 29 412 --- --- ---
 
TOTAL 678690 --- 156964 285370 --- 51476 168900 --- 19908


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data