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.--
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, 839 mg/L, June 29; minimum daily mean, 91 mg/L, Jan. 24.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 954,000 tons, June 29; minimum daily, 17,700 tons, Jan. 27.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
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 143000 148 60700 107000 125 36100 117000 151 47500
2 156000 149 62700 106000 114 32600 114000 140 43200
3 150000 156 62900 107000 124 35400 113000 122 37400
4 137000 163 60300 100000 135 36600 110000 118 35200
5 133000 151 54500 102000 131 36000 113000 120 36400
 
6 128000 149 51600 105000 153 43300 118000 130 41300
7 126000 133 45200 108000 200 58500 123000 142 47300
8 122000 134 44000 107000 190 55000 129000 151 52600
9 125000 135 45600 104000 152 42500 134000 138 50100
10 120000 132 43000 101000 138 37800 129000 126 43900
 
11 117000 128 40400 104000 161 45100 130000 128 45000
12 118000 117 37300 104000 167 47000 127000 133 45300
13 118000 124 39600 109000 167 49100 130000 140 49200
14 119000 117 37700 110000 157 46600 136000 158 57900
15 116000 106 33200 107000 148 42500 126000 167 56800
 
16 115000 107 33300 103000 144 40300 119000 172 55200
17 110000 113 33600 105000 142 40300 118000 158 50000
18 109000 119 35000 104000 140 39200 118000 126 40100
19 104000 126 35400 103000 137 38000 114000 123 37800
20 105000 131 37200 107000 130 37700 104000 --- 34200
 
21 104000 109 30600 100000 128 34600 99800 --- 32000
22 104000 106 29700 93900 127 32200 86500 --- 25900
23 103000 113 31700 96300 126 32800 76600 --- 21200
24 104000 122 34200 99500 126 33900 74300 --- 19100
25 102000 131 36000 108000 137 39900 74600 --- 19100
 
26 104000 136 38200 114000 146 45000 78800 --- 24300
27 106000 126 35900 111000 132 39600 82100 157 34900
28 107000 125 36200 114000 123 38000 78500 162 34300
29 106000 131 37500 117000 139 44000 76800 154 31800
30 103000 135 37700 122000 147 48300 77500 150 31500
 
31 104000 119 33300 --- --- --- 78000 149 31300
 
JANUARY FEBRUARY MARCH
1 82400 147 32700 86200 --- 31500 180000 262 127000
2 88600 148 35500 81400 133 29300 178000 242 116000
3 98700 166 44400 78900 114 24200 167000 220 99200
4 104000 181 51000 85700 120 27900 172000 205 95700
5 104000 153 43100 88900 129 31000 180000 211 103000
 
6 95300 128 33000 85000 128 29400 181000 219 107000
7 94600 140 35800 85600 124 28700 176000 205 97500
8 93600 138 35000 87700 97 23000 167000 189 85300
9 87800 125 29700 83500 105 23800 161000 176 76500
10 94000 149 38000 80100 111 24000 157000 166 70300
 
11 99200 197 52900 77600 114 24000 151000 156 63800
12 97700 156 41200 78000 113 23900 150000 148 60000
13 93800 146 37100 78500 112 23700 151000 140 57300
14 99000 146 39000 81500 111 24400 146000 144 56400
15 97300 141 37000 81700 115 25400 136000 150 55000
 
16 95900 135 35100 79300 109 23300 127000 150 51200
17 88400 130 31000 81000 103 22500 126000 147 50100
18 84000 124 28200 86100 156 37000 131000 145 51300
19 85500 116 26900 108000 289 85300 133000 144 51700
20 84900 118 26900 120000 373 121000 138000 144 53900
 
21 90200 118 28800 125000 363 123000 148000 145 57900
22 87000 109 25500 116000 278 87500 146000 128 50100
23 83500 99 22300 105000 226 64000 140000 135 51100
24 81500 91 20000 96000 245 63500 143000 133 51300
25 80000 --- 19100 95900 203 52600 143000 126 48600
 
26 78600 --- 18400 98800 166 44500 137000 120 44300
27 74300 --- 17700 122000 174 57800 134000 114 41400
28 82200 --- 24400 152000 197 81300 134000 116 41800
29 91000 --- 31900 174000 256 121000 122000 125 41300
30 91300 --- 32600 --- --- --- 122000 125 41100
 
31 88600 --- 32000 --- --- --- 132000 126 44900
 
APRIL MAY JUNE
1 141000 128 48900 166000 152 68100 201000 280 152000
2 143000 125 48300 164000 157 69700 183000 278 137000
3 136000 121 44200 152000 144 59100 192000 264 137000
4 130000 117 41000 149000 127 51200 205000 242 134000
5 124000 123 41000 143000 131 50500 204000 244 134000
 
6 116000 131 41200 133000 135 48600 212000 255 146000
7 120000 130 42400 134000 162 60000 221000 289 172000
8 120000 128 41200 186000 476 248000 222000 321 192000
9 120000 125 40500 213000 755 434000 222000 342 205000
10 117000 122 38600 174000 620 292000 225000 356 217000
 
11 110000 120 35700 137000 321 120000 228000 369 227000
12 109000 118 34800 125000 267 89700 233000 382 240000
13 108000 117 34300 130000 229 80400 239000 395 255000
14 110000 116 34400 132000 194 68900 239000 409 264000
15 108000 112 32700 127000 164 56200 238000 416 267000
 
16 102000 106 29100 128000 141 48900 243000 397 261000
17 99600 --- 27100 126000 138 47000 287000 544 425000
18 103000 --- 27900 127000 142 48500 306000 651 538000
19 104000 --- 28000 127000 146 49900 309000 466 389000
20 100000 --- 27600 126000 148 50400 304000 496 407000
 
21 111000 --- 34400 125000 149 50500 307000 524 435000
22 122000 --- 43500 136000 145 53300 321000 514 446000
23 150000 --- 64000 152000 163 66900 328000 552 489000
24 179000 --- 90900 164000 177 78300 347000 556 522000
25 177000 --- 87300 168000 172 78000 386000 724 756000
 
26 169000 --- 74500 173000 174 81300 390000 809 852000
27 167000 --- 73200 182000 200 98800 389000 641 673000
28 161000 163 70800 215000 280 164000 402000 770 838000
29 162000 140 61300 251000 371 252000 421000 839 954000
30 163000 140 61600 239000 372 239000 424000 755 865000
 
31 --- --- --- 219000 329 194000 --- --- ---
 
JULY AUGUST SEPTEMBER
1 417000 745 838000 153000 170 70500 105000 118 33400
2 399000 728 782000 151000 147 60000 110000 107 32000
3 377000 754 766000 143000 136 52800 112000 102 30800
4 355000 666 639000 145000 132 51500 109000 101 29700
5 334000 564 509000 143000 121 46700 105000 103 29200
 
6 319000 527 453000 139000 115 43000 94200 107 27200
7 303000 458 374000 131000 116 41000 86800 102 23800
8 299000 421 340000 130000 151 53200 88200 99 23500
9 300000 403 326000 147000 156 62000 83300 95 21400
10 296000 366 293000 166000 163 73500 85600 108 25100
 
11 280000 376 283000 173000 163 76200 91800 100 24800
12 262000 376 266000 162000 158 69300 98000 106 28000
13 263000 375 266000 145000 143 56100 98000 118 31300
14 263000 346 246000 135000 126 45900 96600 119 31000
15 258000 360 251000 116000 127 39700 107000 103 29800
 
16 256000 349 241000 104000 122 34200 111000 118 35600
17 256000 336 232000 105000 109 31000 114000 123 37900
18 255000 326 224000 115000 119 37200 113000 113 34400
19 265000 335 240000 125000 136 46200 119000 115 37000
20 283000 404 309000 127000 127 43600 118000 109 34800
 
21 284000 394 302000 127000 116 39800 113000 111 33700
22 277000 315 236000 123000 114 37800 107000 114 32900
23 267000 290 209000 122000 106 34900 106000 143 41000
24 254000 281 192000 124000 121 40600 104000 122 34100
25 236000 236 150000 136000 122 44900 97600 99 26200
 
26 211000 228 130000 161000 165 72300 106000 110 31800
27 192000 182 94500 174000 198 92900 120000 104 33700
28 172000 148 68300 156000 194 81300 124000 111 37400
29 170000 167 76700 132000 148 52700 116000 117 36300
30 169000 172 78200 119000 127 40700 109000 102 33000
 
31 153000 168 69300 110000 123 36400 --- --- ---


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data