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 | 148000 | 154000 | 161000 | 222000 | 314000 | 505000 | 475000 | 829000 | 266000 | 526000 | 205000 | 113000 |
2 | 150000 | 161000 | 173000 | 209000 | 317000 | 468000 | 396000 | 818000 | 244000 | 534000 | 214000 | 81100 |
3 | 128000 | 161000 | 199000 | 163000 | 318000 | 417000 | 347000 | 815000 | 234000 | 528000 | 189000 | 79500 |
4 | 87600 | 158000 | 222000 | 152000 | 311000 | 358000 | 311000 | 818000 | 228000 | 519000 | 177000 | 90800 |
5 | 104000 | 154000 | 227000 | 150000 | 303000 | 331000 | 294000 | 817000 | 259000 | 510000 | 181000 | 85200 |
6 | 96500 | 164000 | 219000 | 150000 | 332000 | 328000 | 298000 | 815000 | 360000 | 513000 | 155000 | 87700 |
7 | 102000 | 167000 | 206000 | 182000 | 374000 | 324000 | 306000 | 819000 | 385000 | 491000 | 171000 | 83400 |
8 | 102000 | 162000 | 170000 | 276000 | 422000 | 346000 | 342000 | 828000 | 397000 | 428000 | 191000 | 81600 |
9 | 102000 | 137000 | 154000 | 442000 | 462000 | 391000 | 350000 | 834000 | 425000 | 343000 | 202000 | 88000 |
10 | 90800 | 151000 | 160000 | 584000 | 493000 | 397000 | 352000 | 835000 | 403000 | 299000 | 216000 | 86000 |
11 | 72200 | 167000 | 166000 | 657000 | 508000 | 423000 | 362000 | 834000 | 407000 | 266000 | 211000 | 75300 |
12 | 60100 | 220000 | 170000 | 697000 | 524000 | 455000 | 388000 | 831000 | 438000 | 272000 | 203000 | 78800 |
13 | 70900 | 219000 | 209000 | 711000 | 523000 | 487000 | 404000 | 825000 | 489000 | 275000 | 210000 | 86500 |
14 | 76900 | 219000 | 215000 | 729000 | 503000 | 512000 | 430000 | 808000 | 550000 | 262000 | 202000 | 76500 |
15 | 97900 | 172000 | 198000 | 749000 | 529000 | 522000 | 438000 | 764000 | 598000 | 290000 | 190000 | 81800 |
16 | 102000 | 149000 | 197000 | 747000 | 561000 | 520000 | 472000 | 711000 | 590000 | 325000 | 155000 | 79700 |
17 | 88800 | 158000 | 193000 | 729000 | 586000 | 471000 | 522000 | 669000 | 599000 | 318000 | 144000 | 76100 |
18 | 81800 | 176000 | 157000 | 709000 | 601000 | 417000 | 634000 | 615000 | 601000 | 284000 | 152000 | 80100 |
19 | 74200 | 176000 | 139000 | 664000 | 599000 | 352000 | 708000 | 525000 | 608000 | 252000 | 171000 | 78700 |
20 | 74800 | 177000 | 129000 | 596000 | 569000 | 349000 | 807000 | 430000 | 596000 | 220000 | 178000 | 81200 |
21 | 91000 | 159000 | 116000 | 516000 | 544000 | 395000 | 850000 | 349000 | 580000 | 228000 | 173000 | 80200 |
22 | 86000 | 135000 | 108000 | 450000 | 546000 | 453000 | 809000 | 309000 | 574000 | 267000 | 140000 | 102000 |
23 | 76000 | 114000 | 111000 | 404000 | 563000 | 503000 | 758000 | 285000 | 568000 | 291000 | 132000 | 119000 |
24 | 84200 | 126000 | 110000 | 361000 | 566000 | 537000 | 752000 | 275000 | 563000 | 271000 | 129000 | 88300 |
25 | 88000 | 143000 | 112000 | 306000 | 566000 | 568000 | 764000 | 301000 | 555000 | 233000 | 131000 | 77000 |
26 | 94600 | 152000 | 150000 | 294000 | 567000 | 589000 | 802000 | 341000 | 534000 | 205000 | 130000 | 69400 |
27 | 96100 | 159000 | 180000 | 301000 | 560000 | 585000 | 823000 | 362000 | 520000 | 189000 | 152000 | 67500 |
28 | 111000 | 155000 | 177000 | 316000 | 539000 | 597000 | 830000 | 386000 | 497000 | 192000 | 128000 | 79500 |
29 | 114000 | 154000 | 177000 | 325000 | --- | 598000 | 833000 | 390000 | 469000 | 188000 | 105000 | 87000 |
30 | 130000 | 148000 | 208000 | 331000 | --- | 583000 | 841000 | 334000 | 490000 | 185000 | 109000 | 79700 |
31 | 139000 | --- | 224000 | 326000 | --- | 547000 | --- | 296000 | --- | 189000 | 92500 | --- |
TOTAL | 3020400 | 4847000 | 5337000 | 13448000 | 13600000 | 14328000 | 16698000 | 18868000 | 14027000 | 9893000 | 5138500 | 2520600 |
MEAN | 97430 | 161600 | 172200 | 433800 | 485700 | 462200 | 556600 | 608600 | 467600 | 319100 | 165800 | 84020 |
MAX | 150000 | 220000 | 227000 | 749000 | 601000 | 598000 | 850000 | 835000 | 608000 | 534000 | 216000 | 119000 |
MIN | 60100 | 114000 | 108000 | 150000 | 303000 | 324000 | 294000 | 275000 | 228000 | 185000 | 92500 | 67500 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1928 - 1998, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 103500 | 166200 | 291900 | 399300 | 469800 | 529000 | 461300 | 341000 | 222900 | 154900 | 122200 | 100000 |
MAX | 335600 | 450300 | 717500 | 1022000 | 1218000 | 1039000 | 896400 | 917800 | 596400 | 441200 | 331100 | 383500 |
(WY) | 1980 | 1986 | 1973 | 1937 | 1937 | 1997 | 1994 | 1983 | 1997 | 1928 | 1958 | 1979 |
MIN | 22710 | 33400 | 48610 | 71650 | 77380 | 154700 | 129900 | 75180 | 53840 | 23350 | 25390 | 29330 |
(WY) | 1931 | 1931 | 1931 | 1940 | 1934 | 1941 | 1986 | 1941 | 1936 | 1930 | 1930 | 1930 |
SUMMARY STATISTICS | FOR 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1928 - 1998 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 120717100 | 121725500 | ||||
ANNUAL MEAN | 330700 | 333500 | 278500 | |||
HIGHEST ANNUAL MEAN | 436600 | 1979 | ||||
LOWEST ANNUAL MEAN | 120300 | 1931 | ||||
HIGHEST DAILY MEAN | 1210000 | Mar 11 | 850000 | Apr 21 | 1850000 | Feb 1 1937 |
LOWEST DAILY MEAN | 60100 | Oct 12 | 60100 | Oct 12 | 15000 | Jul 20 1930 |
ANNUAL SEVEN-DAY MINIMUM | 81100 | Oct 18 | 78300 | Sep 24 | 16600 | Jul 20 1930 |
INSTANTANEOUS PEAK FLOW | 863000 | Apr 21 | 1850000 | Feb 1 1937 | ||
INSTANTANEOUS PEAK STAGE | 51.05 | Apr 21 | 66.60 | Feb 2 1937 | ||
10 PERCENT EXCEEDS | 688000 | 666000 | 641000 | |||
50 PERCENT EXCEEDS | 209000 | 276000 | 191000 | |||
90 PERCENT EXCEEDS | 90800 | 88000 | 68300 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |