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. |
SEDIMENT: August 1980 to current year. |
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 107000 | 101000 | 109000 | 70700 | 212000 | 459000 | 282000 | 417000 | 340000 | 369000 | 183000 | 137000 |
2 | 105000 | 93300 | 109000 | 71500 | 217000 | 451000 | 268000 | 420000 | 346000 | 354000 | 191000 | 132000 |
3 | 100000 | 86300 | 110000 | 72300 | 197000 | 424000 | 268000 | 421000 | 365000 | 342000 | 200000 | 118000 |
4 | 93200 | 84000 | 108000 | 71300 | 185000 | 381000 | 265000 | 420000 | 397000 | 334000 | 187000 | 105000 |
5 | 93800 | 86800 | 110000 | 72000 | 176000 | 335000 | 274000 | 418000 | 430000 | 328000 | 174000 | 103000 |
6 | 117000 | 91200 | 107000 | 74800 | 160000 | 305000 | 306000 | 413000 | 469000 | 325000 | 170000 | 104000 |
7 | 120000 | 103000 | 99100 | 75300 | 152000 | 292000 | 323000 | 413000 | 502000 | 329000 | 169000 | 101000 |
8 | 116000 | 116000 | 89100 | 75200 | 143000 | 280000 | 318000 | 419000 | 532000 | 331000 | 166000 | 99400 |
9 | 115000 | 115000 | 80300 | 75700 | 139000 | 266000 | 306000 | 429000 | 562000 | 319000 | 163000 | 104000 |
10 | 105000 | 123000 | 75100 | 74700 | 173000 | 252000 | 305000 | 447000 | 583000 | 301000 | 161000 | 109000 |
11 | 94600 | 132000 | 72700 | 73500 | 246000 | 239000 | 307000 | 460000 | 590000 | 282000 | 160000 | 102000 |
12 | 90700 | 144000 | 74700 | 73500 | 310000 | 229000 | 330000 | 460000 | 585000 | 264000 | 152000 | 104000 |
13 | 92500 | 153000 | 75400 | 71200 | 330000 | 223000 | 362000 | 455000 | 564000 | 254000 | 142000 | 113000 |
14 | 92400 | 159000 | 66300 | 72500 | 313000 | 212000 | 378000 | 454000 | 534000 | 238000 | 133000 | 121000 |
15 | 92200 | 148000 | 63400 | 83000 | 288000 | 210000 | 378000 | 463000 | 501000 | 226000 | 119000 | 120000 |
16 | 95700 | 138000 | 64400 | 89300 | 269000 | 238000 | 377000 | 469000 | 469000 | 220000 | 97000 | 121000 |
17 | 108000 | 138000 | 66100 | 99400 | 254000 | 293000 | 383000 | 473000 | 442000 | 212000 | 92400 | 120000 |
18 | 114000 | 135000 | 71900 | 96800 | 241000 | 367000 | 387000 | 478000 | 431000 | 200000 | 90800 | 114000 |
19 | 112000 | 134000 | 72900 | 97500 | 227000 | 416000 | 391000 | 487000 | 439000 | 195000 | 98900 | 105000 |
20 | 104000 | 136000 | 73400 | 101000 | 216000 | 429000 | 393000 | 494000 | 443000 | 198000 | 101000 | 104000 |
21 | 94800 | 137000 | 71000 | 100000 | 208000 | 420000 | 394000 | 501000 | 434000 | 188000 | 99500 | 104000 |
22 | 87700 | 128000 | 68800 | 103000 | 199000 | 402000 | 396000 | 503000 | 415000 | 186000 | 98000 | 145000 |
23 | 84200 | 126000 | 72100 | 104000 | 188000 | 381000 | 398000 | 496000 | 412000 | 182000 | 99700 | 178000 |
24 | 87900 | 118000 | 77300 | 101000 | 183000 | 361000 | 400000 | 485000 | 432000 | 178000 | 107000 | 177000 |
25 | 97300 | 112000 | 79500 | 98600 | 241000 | 350000 | 406000 | 470000 | 448000 | 187000 | 142000 | 164000 |
26 | 96700 | 112000 | 76600 | 93100 | 354000 | 345000 | 412000 | 453000 | 450000 | 185000 | 144000 | 153000 |
27 | 92800 | 116000 | 73500 | 89100 | 410000 | 345000 | 416000 | 432000 | 443000 | 178000 | 128000 | 141000 |
28 | 90200 | 114000 | 72400 | 86000 | 446000 | 340000 | 415000 | 407000 | 429000 | 181000 | 119000 | 136000 |
29 | 92000 | 112000 | 70200 | 82000 | --- | 331000 | 414000 | 380000 | 407000 | 196000 | 118000 | 140000 |
30 | 93800 | 111000 | 72100 | 94000 | --- | 314000 | 415000 | 357000 | 386000 | 202000 | 125000 | 141000 |
31 | 98400 | --- | 72100 | 165000 | --- | 296000 | --- | 344000 | --- | 191000 | 134000 | --- |
MEAN | 99480 | 120100 | 80750 | 87320 | 238500 | 328600 | 355600 | 443200 | 459300 | 247600 | 137600 | 123800 |
MAX | 120000 | 159000 | 110000 | 165000 | 446000 | 459000 | 416000 | 503000 | 590000 | 369000 | 200000 | 178000 |
MIN | 84200 | 84000 | 63400 | 70700 | 139000 | 210000 | 265000 | 344000 | 340000 | 178000 | 90800 | 99400 |
IN. | .16 | .19 | .13 | .14 | .35 | .53 | .56 | .72 | .72 | .40 | .22 | .20 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1942 - 2001, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 150900 | 157800 | 140500 | 131800 | 161900 | 252400 | 336200 | 322600 | 287700 | 244400 | 161400 | 147100 |
MAX | 588300 | 380400 | 500100 | 323200 | 331000 | 528400 | 719100 | 630900 | 597200 | 795300 | 769500 | 551000 |
(WY) | 1987 | 1986 | 1983 | 1973 | 1974 | 1973 | 1973 | 1995 | 1947 | 1993 | 1993 | 1993 |
MIN | 59490 | 59320 | 51070 | 47810 | 52860 | 84200 | 129400 | 127200 | 81040 | 69050 | 69580 | 66030 |
(WY) | 1957 | 1957 | 1964 | 1964 | 1964 | 1964 | 2000 | 1989 | 1988 | 1988 | 1988 | 1976 |
SUMMARY STATISTICS | FOR 2000 CALENDAR YEAR | FOR 2001 WATER YEAR | WATER YEARS 1942 - 2001 | |||
---|---|---|---|---|---|---|
ANNUAL MEAN | 143300 | 226300 | 207800 | |||
HIGHEST ANNUAL MEAN | 441700 | 1993 | ||||
LOWEST ANNUAL MEAN | 96770 | 1956 | ||||
HIGHEST DAILY MEAN | 424000 | Jun 30 | 590000 | Jun 11 | 1000000 | Aug 6 1993 |
LOWEST DAILY MEAN | 63400 | Dec 15 | 63400 | Dec 15 | 37600 | Jan 1 1964 |
ANNUAL SEVEN-DAY MINIMUM | 68300 | Dec 14 | 68300 | Dec 14 | 38500 | Dec 20 1963 |
MAXIMUM PEAK FLOW | 591000 | Jun 11 | 1000000 | Aug 7 1993 | ||
MAXIMUM PEAK STAGE | 35.31 | Jun 11 | 49.74 | Aug 7 1993 | ||
INSTANTANEOUS LOW FLOW | 62900 | Dec 15 | 30000 | Dec 12 1937 | ||
ANNUAL RUNOFF (INCHES) | 2.75 | 4.34 | 3.99 | |||
10 PERCENT EXCEEDS | 255000 | 440000 | 401000 | |||
50 PERCENT EXCEEDS | 120000 | 174000 | 167000 | |||
90 PERCENT EXCEEDS | 81600 | 80000 | 78100 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |