DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 146000 | 213000 | 194000 | 103000 | 289000 | 178000 | 165000 | 519000 | 462000 | 374000 | 268000 | 154000 |
2 | 144000 | 221000 | 192000 | 104000 | 315000 | 174000 | 163000 | 532000 | 456000 | 407000 | 271000 | 147000 |
3 | 158000 | 280000 | 215000 | 105000 | 307000 | 182000 | 167000 | 524000 | 449000 | 423000 | 269000 | 148000 |
4 | 160000 | 365000 | 219000 | 110000 | 288000 | 185000 | 181000 | 501000 | 454000 | 414000 | 259000 | 142000 |
5 | 153000 | 423000 | 209000 | 107000 | 278000 | 190000 | 178000 | 491000 | 459000 | 388000 | 247000 | 142000 |
6 | 221000 | 426000 | 198000 | 115000 | 272000 | 192000 | 185000 | 516000 | 451000 | 360000 | 236000 | 142000 |
7 | 368000 | 396000 | 197000 | 118000 | 304000 | 195000 | 197000 | 537000 | 444000 | 345000 | 227000 | 130000 |
8 | 407000 | 369000 | 236000 | 113000 | 355000 | 186000 | 209000 | 548000 | 435000 | 329000 | 227000 | 131000 |
9 | 390000 | 334000 | 267000 | 106000 | 361000 | 208000 | 236000 | 543000 | 421000 | 312000 | 229000 | 132000 |
10 | 370000 | 325000 | 267000 | 105000 | 337000 | 256000 | 282000 | 512000 | 407000 | 312000 | 222000 | 128000 |
11 | 341000 | 355000 | 236000 | 104000 | 321000 | 280000 | 302000 | 468000 | 397000 | 311000 | 209000 | 122000 |
12 | 302000 | 372000 | 222000 | 100000 | 304000 | 273000 | 289000 | 431000 | 390000 | 305000 | 219000 | 122000 |
13 | 253000 | 371000 | 209000 | 102000 | 294000 | 259000 | 289000 | 407000 | 384000 | 294000 | 233000 | 117000 |
14 | 220000 | 360000 | 199000 | 102000 | 294000 | 254000 | 297000 | 387000 | 377000 | 288000 | 220000 | 121000 |
15 | 195000 | 338000 | 187000 | 108000 | 289000 | 239000 | 304000 | 389000 | 377000 | 285000 | 199000 | 120000 |
16 | 188000 | 313000 | 177000 | 119000 | 276000 | 221000 | 333000 | 402000 | 380000 | 275000 | 190000 | 123000 |
17 | 188000 | 293000 | 178000 | 121000 | 262000 | 220000 | 407000 | 416000 | 388000 | 271000 | 182000 | 123000 |
18 | 212000 | 282000 | 170000 | 128000 | 258000 | 221000 | 469000 | 430000 | 390000 | 261000 | 180000 | 126000 |
19 | 273000 | 277000 | 174000 | 136000 | 255000 | 224000 | 495000 | 452000 | 384000 | 261000 | 170000 | 121000 |
20 | 338000 | 268000 | 167000 | 140000 | 256000 | 235000 | 503000 | 475000 | 378000 | 250000 | 160000 | 125000 |
21 | 372000 | 255000 | 166000 | 141000 | 244000 | 228000 | 504000 | 491000 | 373000 | 247000 | 153000 | 117000 |
22 | 365000 | 244000 | 159000 | 152000 | 229000 | 211000 | 491000 | 497000 | 370000 | 245000 | 154000 | 122000 |
23 | 336000 | 241000 | 152000 | 228000 | 212000 | 203000 | 467000 | 489000 | 366000 | 240000 | 155000 | 118000 |
24 | 306000 | 229000 | 157000 | 275000 | 214000 | 214000 | 439000 | 485000 | 360000 | 231000 | 159000 | 117000 |
25 | 272000 | 232000 | 134000 | 274000 | 201000 | 222000 | 438000 | 490000 | 355000 | 233000 | 164000 | 117000 |
26 | 247000 | 229000 | 120000 | 256000 | 191000 | 214000 | 456000 | 499000 | 355000 | 237000 | 164000 | 114000 |
27 | 222000 | 221000 | 119000 | 247000 | 190000 | 203000 | 465000 | 497000 | 354000 | 242000 | 167000 | 114000 |
28 | 218000 | 219000 | 123000 | 236000 | 189000 | 202000 | 483000 | 492000 | 338000 | 246000 | 161000 | 114000 |
29 | 212000 | 213000 | 117000 | 236000 | --- | 193000 | 491000 | 484000 | 329000 | 256000 | 170000 | 136000 |
30 | 216000 | 207000 | 113000 | 236000 | --- | 179000 | 500000 | 476000 | 335000 | 259000 | 163000 | 140000 |
31 | 215000 | --- | 102000 | 248000 | --- | 173000 | --- | 469000 | --- | 261000 | 155000 | --- |
MEAN | 258300 | 295700 | 179800 | 154000 | 270900 | 213400 | 346200 | 479000 | 393900 | 295500 | 199400 | 127500 |
MAX | 407000 | 426000 | 267000 | 275000 | 361000 | 280000 | 504000 | 548000 | 462000 | 423000 | 271000 | 154000 |
MIN | 144000 | 207000 | 102000 | 100000 | 189000 | 173000 | 163000 | 387000 | 329000 | 231000 | 153000 | 114000 |
IN. | .43 | .47 | .30 | .25 | .40 | .35 | .55 | .79 | .63 | .49 | .33 | .20 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1933 - 1999, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 140400 | 145300 | 125000 | 116700 | 145300 | 231600 | 309200 | 293100 | 269500 | 223000 | 146300 | 138200 |
MAX | 575300 | 359200 | 452400 | 307800 | 301400 | 521800 | 692500 | 588700 | 600600 | 808800 | 700200 | 531800 |
(WY) | 1987 | 1986 | 1983 | 1973 | 1974 | 1973 | 1973 | 1995 | 1947 | 1993 | 1993 | 1993 |
MIN | 44170 | 47920 | 42130 | 31340 | 41900 | 74550 | 110100 | 79500 | 70260 | 67130 | 43510 | 54640 |
(WY) | 1940 | 1940 | 1938 | 1940 | 1940 | 1964 | 1934 | 1934 | 1934 | 1936 | 1936 | 1939 |
SUMMARY STATISTICS | FOR 1998 CALENDAR YEAR | FOR 1999 WATER YEAR | WATER YEARS 1933 - 1999 | |||
---|---|---|---|---|---|---|
ANNUAL MEAN | 273700 | 267500 | 190300 | |||
HIGHEST ANNUAL MEAN | 429700 | 1993 | ||||
LOWEST ANNUAL MEAN | 67700 | 1934 | ||||
HIGHEST DAILY MEAN | 542000 | Apr 17 | 548000 | May 8 | 1050000 | Aug 1 1993 |
LOWEST DAILY MEAN | 99200 | Sep 13 | 100000 | Jan 12 | 27800 | Dec 12 1937 |
ANNUAL SEVEN-DAY MINIMUM | 105000 | Sep 9 | 104000 | Jan 9 | 28200 | Jan 18 1940 |
INSTANTANEOUS PEAK FLOW | 551000 | May 8 | 1080000 | Aug 1 1993 | ||
INSTANTANEOUS PEAK STAGE | 32.62 | May 8 | 49.58 | Aug 1 1993 | ||
INSTANTANEOUS LOW FLOW | 98000 | Jan 12 | 27800 | Dec 12 1937 | ||
ANNUAL RUNOFF (INCHES) | 5.33 | 5.21 | 3.71 | |||
10 PERCENT EXCEEDS | 437000 | 456000 | 370000 | |||
50 PERCENT EXCEEDS | 252000 | 241000 | 154000 | |||
90 PERCENT EXCEEDS | 142000 | 123000 | 68700 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |