DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 137000 | 174000 | 164000 | 135000 | 149000 | 292000 | 372000 | 444000 | 243000 | 383000 | 293000 | 180000 |
2 | 136000 | 174000 | 161000 | 139000 | 146000 | 271000 | 432000 | 458000 | 242000 | 405000 | 283000 | 165000 |
3 | 136000 | 169000 | 179000 | 132000 | 140000 | 259000 | 486000 | 455000 | 246000 | 428000 | 270000 | 141000 |
4 | 132000 | 164000 | 187000 | 140000 | 140000 | 253000 | 517000 | 437000 | 252000 | 424000 | 237000 | 123000 |
5 | 133000 | 165000 | 179000 | 164000 | 156000 | 253000 | 531000 | 410000 | 250000 | 405000 | 226000 | 125000 |
6 | 135000 | 174000 | 173000 | 192000 | 175000 | 253000 | 534000 | 379000 | 274000 | 405000 | 222000 | 124000 |
7 | 132000 | 166000 | 178000 | 215000 | 176000 | 248000 | 530000 | 353000 | 256000 | 422000 | 225000 | 122000 |
8 | 132000 | 163000 | 175000 | 271000 | 166000 | 249000 | 514000 | 339000 | 232000 | 429000 | 223000 | 116000 |
9 | 133000 | 159000 | 176000 | 325000 | 157000 | 286000 | 488000 | 330000 | 231000 | 429000 | 228000 | 106000 |
10 | 128000 | 156000 | 171000 | 304000 | 152000 | 351000 | 466000 | 324000 | 264000 | 434000 | 230000 | 105000 |
11 | 129000 | 155000 | 162000 | 260000 | 150000 | 388000 | 465000 | 321000 | 280000 | 437000 | 223000 | 107000 |
12 | 129000 | 155000 | 158000 | 224000 | 199000 | 386000 | 483000 | 314000 | 298000 | 433000 | 221000 | 105000 |
13 | 131000 | 151000 | 158000 | 193000 | 261000 | 364000 | 499000 | 310000 | 294000 | 424000 | 220000 | 99200 |
14 | 132000 | 152000 | 154000 | 169000 | 264000 | 338000 | 499000 | 305000 | 305000 | 413000 | 208000 | 99500 |
15 | 129000 | 149000 | 148000 | 166000 | 242000 | 316000 | 498000 | 304000 | 334000 | 394000 | 205000 | 111000 |
16 | 147000 | 150000 | 142000 | 153000 | 217000 | 295000 | 518000 | 296000 | 342000 | 370000 | 207000 | 136000 |
17 | 165000 | 145000 | 141000 | 154000 | 209000 | 285000 | 542000 | 286000 | 358000 | 344000 | 187000 | 243000 |
18 | 163000 | 148000 | 140000 | 155000 | 218000 | 327000 | 538000 | 268000 | 385000 | 316000 | 172000 | 245000 |
19 | 162000 | 146000 | 135000 | 146000 | 239000 | 382000 | 521000 | 252000 | 396000 | 284000 | 176000 | 205000 |
20 | 161000 | 143000 | 132000 | 140000 | 240000 | 453000 | 499000 | 253000 | 396000 | 261000 | 188000 | 178000 |
21 | 162000 | 150000 | 138000 | 141000 | 238000 | 502000 | 482000 | 263000 | 406000 | 248000 | 175000 | 163000 |
22 | 160000 | 143000 | 142000 | 144000 | 237000 | 511000 | 464000 | 278000 | 444000 | 235000 | 165000 | 146000 |
23 | 160000 | 144000 | 140000 | 145000 | 231000 | 494000 | 449000 | 288000 | 475000 | 224000 | 151000 | 143000 |
24 | 159000 | 140000 | 141000 | 146000 | 231000 | 461000 | 434000 | 288000 | 484000 | 217000 | 142000 | 138000 |
25 | 158000 | 136000 | 152000 | 144000 | 221000 | 427000 | 422000 | 280000 | 477000 | 217000 | 144000 | 149000 |
26 | 156000 | 132000 | 157000 | 141000 | 223000 | 397000 | 414000 | 298000 | 468000 | 215000 | 149000 | 154000 |
27 | 156000 | 123000 | 161000 | 136000 | 252000 | 371000 | 400000 | 316000 | 446000 | 210000 | 151000 | 154000 |
28 | 151000 | 134000 | 163000 | 133000 | 298000 | 358000 | 391000 | 314000 | 417000 | 267000 | 150000 | 156000 |
29 | 153000 | 143000 | 164000 | 140000 | --- | 353000 | 395000 | 296000 | 390000 | 299000 | 160000 | 150000 |
30 | 162000 | 158000 | 155000 | 139000 | --- | 352000 | 421000 | 280000 | 381000 | 308000 | 164000 | 140000 |
31 | 169000 | --- | 141000 | 144000 | --- | 354000 | --- | 261000 | --- | 312000 | 174000 | --- |
MEAN | 146100 | 152000 | 157000 | 171900 | 204500 | 349300 | 473500 | 322600 | 342200 | 341700 | 199000 | 144300 |
MAX | 169000 | 174000 | 187000 | 325000 | 298000 | 511000 | 542000 | 458000 | 484000 | 437000 | 293000 | 245000 |
MIN | 128000 | 123000 | 132000 | 132000 | 140000 | 248000 | 372000 | 252000 | 231000 | 210000 | 142000 | 99200 |
IN. | .24 | .24 | .26 | .28 | .31 | .58 | .76 | .53 | .55 | .57 | .33 | .23 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1933 - 1998, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 138600 | 143000 | 124100 | 116100 | 143400 | 231900 | 308700 | 290300 | 267600 | 221900 | 145500 | 138400 |
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 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1933 - 1998 | |||
---|---|---|---|---|---|---|
ANNUAL MEAN | 227800 | 250400 | 189200 | |||
HIGHEST ANNUAL MEAN | 429700 | 1993 | ||||
LOWEST ANNUAL MEAN | 67700 | 1934 | ||||
HIGHEST DAILY MEAN | 540000 | Mar 1 | 542000 | Apr 17 | 1050000 | Aug 1 1993 |
LOWEST DAILY MEAN | 109000 | Jan 11 | 99200 | Sep 13 | 27800 | Dec 12 1937 |
ANNUAL SEVEN-DAY MINIMUM | 114000 | Jan 11 | 105000 | Sep 9 | 28200 | Jan 18 1940 |
INSTANTANEOUS PEAK FLOW | --- | 547000 | Apr 17 | 1080000 | Aug 1 1993 | |
INSTANTANEOUS PEAK STAGE | --- | 33.36 | Apr 17 | 49.58 | Aug 1 1993 | |
INSTANTANEOUS LOW FLOW | --- | 97300 | Sep 14 | 27800 | Dec 12 1937 | |
ANNUAL RUNOFF (INCHES) | 4.44 | 4.88 | 3.69 | |||
10 PERCENT EXCEEDS | 391000 | 437000 | 368000 | |||
50 PERCENT EXCEEDS | 177000 | 218000 | 152000 | |||
90 PERCENT EXCEEDS | 132000 | 136000 | 68400 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |