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 | 13 | 9.4 | 284 | 195 | 161 | 319 | 1000 | 472 | 297 | 794 | 66 | 15 |
2 | 14 | 10 | 250 | 156 | 159 | 306 | 870 | 600 | 268 | 767 | 57 | 13 |
3 | 13 | 8.9 | 240 | 142 | 158 | 288 | 829 | 875 | 248 | 667 | 51 | 12 |
4 | 13 | 8.8 | 221 | 155 | 159 | 277 | 799 | 1040 | 241 | 573 | 60 | 12 |
5 | 13 | 8.7 | 205 | 169 | 161 | 266 | 709 | 1120 | 243 | 507 | 62 | 13 |
6 | 12 | 23 | 182 | 188 | 155 | 251 | 648 | 1100 | 222 | 437 | 60 | 12 |
7 | 12 | 20 | 176 | 213 | 147 | 244 | 605 | 1120 | 204 | 474 | 65 | 12 |
8 | 12 | 14 | 170 | 450 | 142 | 291 | 575 | 1440 | 197 | 542 | 78 | 11 |
9 | 12 | 13 | 167 | 513 | 137 | 435 | 727 | 1680 | 266 | 548 | 75 | 10 |
10 | 15 | 12 | 169 | 542 | 133 | 547 | 811 | 1710 | 279 | 503 | 69 | 10 |
11 | 12 | 13 | 162 | 561 | 173 | 610 | 753 | 1500 | 315 | 450 | 64 | 9.9 |
12 | 14 | 13 | 158 | 536 | 219 | 597 | 668 | 1250 | 441 | 394 | 60 | 9.7 |
13 | 13 | 17 | 143 | 466 | 238 | 558 | 592 | 1220 | 430 | 345 | 51 | 9.7 |
14 | 16 | 22 | 145 | 423 | 255 | 535 | 596 | 947 | 449 | 310 | 45 | 9.7 |
15 | 10 | 17 | 141 | 382 | 260 | 523 | 569 | 742 | 650 | 278 | 40 | 9.7 |
16 | 9.3 | 15 | 138 | 350 | 271 | 502 | 519 | 641 | 851 | 250 | 58 | 9.9 |
17 | 12 | 14 | 134 | 318 | 305 | 764 | 463 | 551 | 1340 | 223 | 47 | 9.7 |
18 | 9.3 | 14 | 128 | 294 | 360 | 1310 | 410 | 471 | 1770 | 201 | 124 | 9.6 |
19 | 8.6 | 13 | 124 | 268 | 377 | 1610 | 381 | 415 | 2010 | 184 | 79 | 9.5 |
20 | 8.2 | 13 | 122 | 246 | 392 | e2000 | 351 | 406 | 1760 | 168 | 62 | 9.2 |
21 | 7.9 | 14 | 120 | 230 | 398 | 2140 | 334 | 379 | 1520 | 153 | 49 | 11 |
22 | 7.5 | 19 | 131 | 216 | 399 | 2140 | 320 | 390 | 1270 | 152 | 42 | 9.3 |
23 | 7.2 | 15 | 117 | 207 | 394 | 2090 | 301 | 480 | 1360 | 170 | 37 | 8.9 |
24 | 7.2 | 13 | 141 | 195 | 374 | 1950 | 279 | 594 | 1310 | 149 | 31 | 10 |
25 | 8.1 | 13 | 180 | 183 | 359 | 1770 | 267 | 528 | 1230 | 132 | 25 | 12 |
26 | 19 | 12 | 185 | 174 | 345 | 1530 | 259 | 501 | 993 | 118 | 23 | 9.6 |
27 | 25 | 13 | 199 | 165 | 337 | 1180 | 277 | 453 | 802 | 102 | 22 | 9.1 |
28 | 9.7 | 69 | 204 | 163 | 330 | 1310 | 244 | 409 | 664 | 90 | 20 | 8.7 |
29 | 7.4 | 87 | 204 | 162 | --- | 1340 | 239 | 379 | 590 | 80 | 18 | 9.1 |
30 | 7.2 | 306 | 197 | 161 | --- | 1220 | 281 | 357 | 688 | 80 | 18 | 9.7 |
31 | 6.9 | --- | 184 | 161 | --- | 1090 | --- | 307 | --- | 74 | 17 | --- |
TOTAL | 354.5 | 839.8 | 5321 | 8584 | 7298 | 29993 | 15676 | 24077 | 22908 | 9915 | 1575 | 314.0 |
MEAN | 11.4 | 28.0 | 172 | 277 | 261 | 968 | 523 | 777 | 764 | 320 | 50.8 | 10.5 |
MAX | 25 | 306 | 284 | 561 | 399 | 2140 | 1000 | 1710 | 2010 | 794 | 124 | 15 |
MIN | 6.9 | 8.7 | 117 | 142 | 133 | 244 | 239 | 307 | 197 | 74 | 17 | 8.7 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1978 - 1998, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 131 | 183 | 272 | 233 | 311 | 595 | 521 | 548 | 335 | 248 | 149 | 65.8 |
MAX | 1069 | 1236 | 1268 | 1316 | 975 | 2129 | 1704 | 1648 | 764 | 1370 | 1576 | 658 |
(WY) | 1994 | 1986 | 1983 | 1993 | 1982 | 1982 | 1979 | 1995 | 1998 | 1981 | 1981 | 1993 |
MIN | 8.31 | 9.77 | 12.1 | 11.0 | 14.9 | 28.4 | 91.8 | 45.2 | 13.7 | 8.51 | 6.57 | 5.46 |
(WY) | 1989 | 1989 | 1996 | 1980 | 1989 | 1989 | 1996 | 1988 | 1988 | 1988 | 1988 | 1988 |
SUMMARY STATISTICS | FOR 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1978 - 1998 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 84680.3 | 126855.3 | ||||
ANNUAL MEAN | 232 | 348 | 300 | |||
HIGHEST ANNUAL MEAN | 601 | 1993 | ||||
LOWEST ANNUAL MEAN | 105 | 1980 | ||||
HIGHEST DAILY MEAN | 2020 | Mar 1 | 2140 | Mar 21, 22 | 6960 | Apr 13 1994 |
LOWEST DAILY MEAN | 6.9 | Oct 31 | 6.9 | Oct 31 | 3.7 | Sep 8 1988 |
ANNUAL SEVEN-DAY MINIMUM | 7.8 | Oct 19 | 7.8 | Oct 19 | 4.1 | Sep 4 1988 |
INSTANTANEOUS PEAK FLOW | 2170 | Mar 20 | 7810 | Apr 13 1994 | ||
INSTANTANEOUS PEAK STAGE | 19.19 | Mar 20 | 24.04 | Apr 13 1994 | ||
INSTANTANEOUS LOW FLOW | 6.8 | Oct 31-Nov 1 | ||||
10 PERCENT EXCEEDS | 696 | 904 | 755 | |||
50 PERCENT EXCEEDS | 126 | 197 | 126 | |||
90 PERCENT EXCEEDS | 13 | 10 | 11 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |