Station list     Available data
LOWER MISSISSIPPI RIVER BASIN


07010000                         MISSISSIPPI RIVER AT ST. LOUIS, MO



LOCATION.--Lat 38°37'44", long 90°10'47", Hydrologic Unit 07140101, on downstream side of west pier of Eads Bridge at St. Louis, 15.0 mi downstream from Missouri River, 19.2 mi upstream from Meramec River, and at mile 180.0 above the Ohio River.

DRAINAGE AREA.--697,000 mi2, approximately.

PERIOD OF RECORD.--
WATER TEMPERATURES: October 1951 to current year.
SEDIMENT RECORDS: April 1948 to current year.

REMARKS.--Sediment discharge computed from turbidity readings. Sediment records fair except for estimated daily load Jan. 28 to Feb. 2, and Feb. 7-10, which are poor.

EXTREMES FOR PERIOD OF DAILY RECORD.--
SEDIMENT CONCENTRATIONS: Maximum daily mean, 6,720 mg/L, Feb. 24, 1985; minimum daily mean, 19 mg/L, Jan. 21 and 22, 1967.
SEDIMENT LOADS: Maximum daily, 9,830,000 tons, Feb. 24, 1985; minimum daily, 2,800 tons, Jan. 21, 1967.

EXTREMES FOR CURRENT YEAR.--
SEDIMENT CONCENTRATIONS: Maximum daily mean, 3,480 mg/L, Apr. 4; minimum daily mean, 74 mg/L, Sept. 16.
SEDIMENT LOADS: Maximum daily, 4,860,000 tons, Apr. 4; minimum daily, 21,700 tons, Sept. 14.
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
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 137000 122 45100 174000 217 102000 164000 175 77500
2 136000 123 45100 174000 196 91900 161000 231 100000
3 136000 119 43800 169000 188 86000 179000 273 132000
4 132000 102 36200 164000 166 73700 187000 442 223000
5 133000 116 41800 165000 183 81300 179000 602 291000
 
6 135000 111 40400 174000 179 84000 173000 950 444000
7 132000 122 43600 166000 208 93100 178000 736 354000
8 132000 122 43500 163000 214 94000 175000 440 208000
9 133000 124 44500 159000 172 73900 176000 344 163000
10 128000 120 41300 156000 159 67100 171000 262 121000
 
11 129000 107 37300 155000 165 69000 162000 236 103000
12 129000 130 45300 155000 157 65600 158000 192 81800
13 131000 127 44800 151000 210 85500 158000 178 75900
14 132000 124 44100 152000 185 76000 154000 188 78300
15 129000 119 41300 149000 158 63600 148000 180 71900
 
16 147000 141 56000 150000 125 50600 142000 190 72900
17 165000 149 66400 145000 136 53100 141000 242 92200
18 163000 207 91000 148000 122 48900 140000 175 66100
19 162000 222 97200 146000 142 56100 135000 229 83400
20 161000 208 90200 143000 159 61200 132000 271 96700
 
21 162000 195 85300 150000 160 64700 138000 255 95100
22 160000 180 77500 143000 153 59000 142000 190 72800
23 160000 170 73500 144000 148 57400 140000 148 55900
24 159000 181 77800 140000 127 48000 141000 154 58600
25 158000 181 77000 136000 132 48300 152000 178 73200
 
26 156000 163 68800 132000 139 49500 157000 248 105000
27 156000 149 62500 123000 148 49200 161000 247 107000
28 151000 153 62200 134000 174 62900 163000 310 136000
29 153000 143 59100 143000 228 87900 164000 385 170000
30 162000 203 88600 158000 188 80200 155000 281 118000
 
31 169000 179 81600 --- --- --- 141000 235 89500
 
JANUARY FEBRUARY MARCH
1 135000 240 87500 149000 --- 55000 292000 593 468000
2 139000 221 83000 146000 --- 58000 271000 408 299000
3 132000 190 67900 140000 165 62400 259000 348 243000
4 140000 210 79300 140000 173 65200 253000 424 290000
5 164000 215 95000 156000 238 100000 253000 379 259000
 
6 192000 217 113000 175000 223 105000 253000 260 177000
7 215000 188 109000 176000 --- 110000 248000 236 158000
8 271000 504 369000 166000 --- 112000 249000 425 285000
9 325000 823 722000 157000 --- 106000 286000 374 289000
10 304000 948 778000 152000 --- 98000 351000 558 528000
 
11 260000 900 632000 150000 382 155000 388000 901 944000
12 224000 535 323000 199000 556 299000 386000 1280 1330000
13 193000 372 194000 261000 703 495000 364000 1240 1220000
14 169000 303 138000 264000 534 380000 338000 668 610000
15 166000 280 126000 242000 572 374000 316000 487 416000
 
16 153000 214 88400 217000 613 359000 295000 324 258000
17 154000 157 65200 209000 430 243000 285000 264 203000
18 155000 183 76500 218000 429 252000 327000 270 239000
19 146000 160 63000 239000 447 288000 382000 357 368000
20 140000 124 46900 240000 327 212000 453000 698 854000
 
21 141000 174 66200 238000 355 228000 502000 1230 1660000
22 144000 158 61300 237000 332 213000 511000 1100 1510000
23 145000 162 63500 231000 343 214000 494000 869 1160000
24 146000 175 68800 231000 348 217000 461000 761 947000
25 144000 143 55500 221000 365 218000 427000 531 612000
 
26 141000 151 57600 223000 409 246000 397000 487 522000
27 136000 149 54500 252000 465 316000 371000 449 449000
28 133000 --- 55000 298000 570 458000 358000 484 468000
29 140000 --- 55000 --- --- --- 353000 528 504000
30 139000 --- 54000 --- --- --- 352000 485 461000
 
31 144000 --- 53000 --- --- --- 354000 434 415000
 
APRIL MAY JUNE
1 372000 442 444000 444000 380 455000 243000 538 353000
2 432000 977 1140000 458000 735 909000 242000 317 207000
3 486000 1570 2060000 455000 788 968000 246000 282 187000
4 517000 3480 4860000 437000 454 535000 252000 228 155000
5 531000 2500 3590000 410000 418 462000 250000 219 148000
 
6 534000 1220 1760000 379000 339 346000 274000 612 452000
7 530000 933 1330000 353000 361 344000 256000 621 429000
8 514000 997 1380000 339000 233 213000 232000 491 308000
9 488000 832 1100000 330000 186 165000 231000 381 237000
10 466000 632 796000 324000 180 157000 264000 302 215000
 
11 465000 474 595000 321000 293 254000 280000 300 227000
12 483000 762 993000 314000 359 304000 298000 221 178000
13 499000 728 980000 310000 299 250000 294000 215 171000
14 499000 1140 1530000 305000 356 293000 305000 183 151000
15 498000 952 1280000 304000 284 233000 334000 173 156000
 
16 518000 610 854000 296000 269 215000 342000 321 296000
17 542000 700 1020000 286000 139 108000 358000 1250 1210000
18 538000 751 1090000 268000 136 98100 385000 1200 1250000
19 521000 408 574000 252000 124 84600 396000 1780 1910000
20 499000 427 575000 253000 113 77300 396000 2220 2380000
 
21 482000 552 719000 263000 112 79600 406000 1740 1910000
22 464000 519 650000 278000 230 172000 444000 1470 1760000
23 449000 304 369000 288000 126 98300 475000 1130 1450000
24 434000 343 402000 288000 172 134000 484000 994 1300000
25 422000 362 412000 280000 311 235000 477000 864 1110000
 
26 414000 344 384000 298000 407 327000 468000 583 736000
27 400000 295 319000 316000 421 359000 446000 697 840000
28 391000 277 292000 314000 408 346000 417000 885 996000
29 395000 231 247000 296000 427 341000 390000 662 697000
30 421000 449 510000 280000 790 597000 381000 609 627000
 
31 --- --- --- 261000 508 358000 --- --- ---
 
JULY AUGUST SEPTEMBER
1 383000 467 483000 293000 815 645000 180000 252 123000
2 405000 451 493000 283000 803 613000 165000 191 84900
3 428000 1830 2110000 270000 940 685000 141000 161 61100
4 424000 1300 1490000 237000 1000 641000 123000 129 43000
5 405000 1050 1140000 226000 845 516000 125000 151 50900
 
6 405000 959 1050000 222000 669 401000 124000 103 34400
7 422000 630 717000 225000 737 448000 122000 129 42500
8 429000 435 504000 223000 549 330000 116000 121 37800
9 429000 535 620000 228000 403 248000 106000 143 41000
10 434000 445 522000 230000 426 264000 105000 175 49700
 
11 437000 411 485000 223000 406 244000 107000 102 29400
12 433000 529 619000 221000 349 208000 105000 82 23300
13 424000 1150 1320000 220000 266 158000 99200 112 29900
14 413000 692 771000 208000 193 108000 99500 81 21700
15 394000 702 746000 205000 168 92800 111000 92 27500
 
16 370000 651 650000 207000 141 78600 136000 74 27100
17 344000 917 852000 187000 146 73700 243000 1330 874000
18 316000 867 740000 172000 226 105000 245000 1420 938000
19 284000 486 372000 176000 139 66200 205000 1080 599000
20 261000 353 249000 188000 139 70600 178000 602 290000
 
21 248000 299 200000 175000 147 69400 163000 399 176000
22 235000 286 181000 165000 120 53400 146000 243 95900
23 224000 281 170000 151000 109 44200 143000 178 68800
24 217000 320 187000 142000 117 44800 138000 139 51600
25 217000 232 136000 144000 98 38200 149000 109 43600
 
26 215000 262 152000 149000 176 70600 154000 152 63300
27 210000 219 124000 151000 124 50400 154000 155 64500
28 267000 1090 786000 150000 100 40500 156000 180 75800
29 299000 806 651000 160000 103 44700 150000 169 68300
30 308000 932 775000 164000 161 71200 140000 163 61800
 
31 312000 906 763000 174000 207 97000 --- --- ---


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data