Station list     Available data
LOWER MISSISSIPPI RIVER BASIN


07020500       MISSISSIPPI RIVER AT CHESTER, IL



LOCATION.-- Lat 37°54'10", long 89°50'10", in SW 1/4 sec.24, T.7 S., R.7 W., third principal meridian, Randolph County, Hydrologic Unit 07140105, on downstream side of left pier of main truss of highway bridge at Chester, 8.1 mi downstream from Kaskaskia River, and at mile 109.9 above Ohio River.

DRAINAGE AREA.-- 708,600 mi2, approximately.

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

DISCHARGE: October 1927 to current year in reports of the U.S. Geological Survey. Monthly discharge only for some periods, published in WSP 1311. Since August 1873, results of discharge measurements in reports of the Mississippi River Commission.
 

STAGE: July 1942 to current year in reports of the U.S. Geological Survey. Since May 1891, in reports of the Mississippi River Commission and National Weather Service.
SURFACE-WATER QUALITY
 

SEDIMENT: August 1980 to current year.

REVISED RECORDS.-- WDR MO-76-1: Drainage area. WDR MO-98-1: Extreme outside period of record.

GAGE.-- Water-stage recorder and U.S. Army Corps of Engineers satellite telemeter. Datum of gage is 341.05 ft above sea level. Prior to Feb. 1, 1962, nonrecording gage 0.4 mi downstream at present datum.

REMARKS.-- Natural flow of stream affected by many reservoirs and navigation dams in upper Mississippi River Basin and by many reservoirs and diversions for irrigation in Missouri River Basin.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,000,000 ft3/s, August 7, 1993, gage height, 49.74 ft; minimum discharge, 30,000 ft3/s, December 12, 1937.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 3,380 mg/L, Apr. 13, 1987; minimum daily mean, 13 mg/L, Mar. 18, 1981.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 3,330,000 tons, Feb. 25, 1997; minimum daily, 3,580 tons, Mar. 18, 1981.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood of June 30, 1844, reached a gage height of 39.8 ft, discharge, 1,050,000 ft3/s, computed by the U.S. Army Corps of Engineers.

EXTREMES FOR CURRENT YEAR.--
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 1,600 mg/L, March 19; minimum daily mean, 59 mg/L, Jan. 9, 13, and 14.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 2,150,000 tons, June 9; minimum daily, 11,400 tons, Jan. 13.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001
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 107000 99 28600 101000 97 26300 109000 109 32000
2 105000 98 27600 93300 112 28200 109000 114 33500
3 100000 99 26900 86300 121 28200 110000 122 36200
4 93200 105 26500 84000 133 30200 108000 110 32000
5 93800 110 27900 86800 133 31000 110000 126 37400
 
6 117000 120 37900 91200 120 29600 107000 109 31500
7 120000 118 38300 103000 107 29900 99100 86 23100
8 116000 117 36800 116000 100 31300 89100 79 19100
9 115000 113 34900 115000 94 29300 80300 76 16500
10 105000 106 30000 123000 93 30900 75100 73 14800
 
11 94600 107 27400 132000 96 34200 72700 72 14200
12 90700 115 28100 144000 126 49400 74700 118 23800
13 92500 119 29800 153000 170 70300 75400 130 26500
14 92400 122 30500 159000 178 76300 66300 105 18800
15 92200 116 28900 148000 183 73200 63400 97 16600
 
16 95700 106 27200 138000 200 74800 64400 96 16700
17 108000 96 27800 138000 175 65300 66100 --- e17500
18 114000 92 28500 135000 143 52400 71900 --- e21700
19 112000 99 30000 134000 144 52100 72900 --- e22600
20 104000 109 30800 136000 150 55100 73400 --- e24000
 
21 94800 115 29400 137000 136 50400 71000 --- e21300
22 87700 117 27800 128000 115 39600 68800 --- e18500
23 84200 101 22900 126000 113 38400 72100 --- e20900
24 87900 93 22200 118000 113 36100 77300 --- e25500
25 97300 115 30100 112000 99 30000 79500 --- e27800
 
26 96700 113 29600 112000 96 29000 76600 --- e24800
27 92800 102 25600 116000 106 33200 73500 --- e21400
28 90200 91 22200 114000 113 34800 72400 --- e18600
29 92000 90 22300 112000 135 40700 70200 --- e15700
30 93800 89 22600 111000 130 38900 72100 --- e14700
 
31 98400 89 23600 --- --- --- 72100 --- e14200
 
JANUARY FEBRUARY MARCH
1 70700 --- e13400 212000 325 187000 459000 1550 1920000
2 71500 --- e13100 217000 362 212000 451000 1440 1750000
3 72300 --- e12700 197000 369 197000 424000 1270 1460000
4 71300 --- e12000 185000 327 164000 381000 1010 1040000
5 72000 --- e11700 176000 248 118000 335000 748 679000
 
6 74800 --- e12000 160000 235 102000 305000 661 546000
7 75300 --- e12000 152000 196 80800 292000 681 537000
8 75200 --- e11900 143000 226 87200 280000 662 501000
9 75700 59 12100 139000 227 85100 266000 529 380000
10 74700 67 13500 173000 413 198000 252000 381 260000
 
11 73500 62 12400 246000 681 457000 239000 303 195000
12 73500 62 12300 310000 945 793000 229000 349 216000
13 71200 59 11400 330000 1000 892000 223000 374 225000
14 72500 59 11600 313000 812 686000 212000 290 166000
15 83000 66 14800 288000 686 534000 210000 266 150000
 
16 89300 79 19000 269000 568 413000 238000 327 211000
17 99400 97 26000 254000 453 310000 293000 489 390000
18 96800 89 23200 241000 377 245000 367000 804 805000
19 97500 81 21500 227000 369 226000 416000 1600 1800000
20 101000 91 24600 216000 308 180000 429000 1550 1790000
 
21 100000 87 23600 208000 284 159000 420000 1240 1400000
22 103000 101 28000 199000 273 147000 402000 956 1040000
23 104000 119 33600 188000 264 134000 381000 746 769000
24 101000 106 28800 183000 270 133000 361000 631 615000
25 98600 101 26900 241000 494 334000 350000 572 541000
 
26 93100 94 23700 354000 1120 1080000 345000 608 567000
27 89100 87 21000 410000 1440 1590000 345000 607 566000
28 86000 84 19400 446000 1520 1830000 340000 587 539000
29 82000 81 18000 --- --- --- 331000 537 480000
30 94000 89 23000 --- --- --- 314000 479 407000
 
31 165000 199 90800 --- --- --- 296000 423 338000
 
APRIL MAY JUNE
1 282000 379 289000 417000 259 291000 340000 308 282000
2 268000 337 245000 420000 237 269000 346000 309 289000
3 268000 297 214000 421000 273 310000 365000 314 309000
4 265000 265 190000 420000 282 320000 397000 340 366000
5 274000 262 194000 418000 291 328000 430000 507 591000
 
6 306000 303 250000 413000 282 314000 469000 1090 1380000
7 323000 326 284000 413000 267 297000 502000 1290 1750000
8 318000 356 305000 419000 250 282000 532000 1400 2010000
9 306000 317 262000 429000 309 357000 562000 1420 2150000
10 305000 292 240000 447000 458 553000 583000 1300 2040000
 
11 307000 313 259000 460000 699 869000 590000 1150 1830000
12 330000 485 434000 460000 732 909000 585000 998 1580000
13 362000 666 651000 455000 722 886000 564000 858 1310000
14 378000 730 745000 454000 562 689000 534000 723 1040000
15 378000 660 673000 463000 479 599000 501000 599 812000
 
16 377000 620 632000 469000 551 697000 469000 555 703000
17 383000 613 633000 473000 505 645000 442000 552 659000
18 387000 612 640000 478000 530 684000 431000 631 734000
19 391000 599 633000 487000 505 664000 439000 593 702000
20 393000 575 610000 494000 522 696000 443000 549 657000
 
21 394000 460 490000 501000 552 747000 434000 511 598000
22 396000 438 468000 503000 579 786000 415000 474 531000
23 398000 408 439000 496000 539 722000 412000 502 558000
24 400000 372 402000 485000 474 621000 432000 710 828000
25 406000 399 437000 470000 409 519000 448000 944 1140000
 
26 412000 440 490000 453000 348 426000 450000 1080 1320000
27 416000 400 449000 432000 314 367000 443000 1050 1250000
28 415000 378 423000 407000 302 331000 429000 952 1100000
29 414000 332 372000 380000 364 372000 407000 829 912000
30 415000 294 329000 357000 366 352000 386000 704 733000
 
31 --- --- --- 344000 325 302000 --- --- ---
 
JULY AUGUST SEPTEMBER
1 369000 578 576000 183000 284 141000 137000 153 56600
2 354000 453 434000 191000 234 121000 132000 146 51800
3 342000 351 324000 200000 252 136000 118000 139 44300
4 334000 291 263000 187000 265 134000 105000 133 38000
5 328000 281 249000 174000 258 121000 103000 130 36200
 
6 325000 281 247000 170000 250 114000 104000 127 35700
7 329000 280 249000 169000 220 100000 101000 124 33800
8 331000 281 251000 166000 180 80500 99400 124 33100
9 319000 301 259000 163000 160 70700 104000 148 41500
10 301000 325 264000 161000 150 65300 109000 147 43300
 
11 282000 281 215000 160000 143 61600 102000 140 38400
12 264000 250 179000 152000 160 66000 104000 143 40200
13 254000 212 146000 142000 150 57400 113000 169 51700
14 238000 218 140000 133000 146 52400 121000 176 57500
15 226000 227 139000 119000 149 47800 120000 169 54500
 
16 220000 235 140000 97000 151 39400 121000 168 54900
17 212000 233 133000 92400 152 38000 120000 153 49400
18 200000 252 136000 90800 154 37700 114000 135 41600
19 195000 273 144000 98900 153 40900 105000 130 36800
20 198000 290 155000 101000 152 41300 104000 127 35500
 
21 188000 277 141000 99500 156 41800 104000 153 43200
22 186000 251 126000 98000 161 42700 145000 330 132000
23 182000 200 98800 99700 160 43100 178000 366 176000
24 178000 262 126000 107000 208 61000 177000 289 138000
25 187000 311 157000 142000 263 101000 164000 232 103000
 
26 185000 238 119000 144000 211 82200 153000 196 80800
27 178000 228 110000 128000 136 47500 141000 180 68500
28 181000 245 120000 119000 112 36100 136000 173 63400
29 196000 262 139000 118000 112 35600 140000 210 79600
30 202000 287 157000 125000 122 41100 141000 213 81000
 
31 191000 314 162000 134000 137 49300 --- --- ---


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data