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 | 73 | 52 | 48 | 59 | 119 | 891 | 1280 | 1880 | 927 | 2420 | 673 | 233 |
2 | 71 | 56 | 58 | 56 | 118 | 850 | 1270 | 2000 | 908 | 2540 | 587 | 231 |
3 | 66 | 52 | 56 | 54 | 104 | 795 | 1240 | 2170 | 881 | 2510 | 516 | 222 |
4 | 62 | 47 | 50 | 55 | 97 | 659 | 1250 | 2320 | 862 | 2360 | 483 | 209 |
5 | 59 | 45 | 47 | 112 | 102 | 525 | 1250 | 2350 | 954 | 2050 | 476 | 202 |
6 | 55 | 58 | 45 | 414 | 98 | 456 | 1210 | 2310 | 1040 | 1700 | 501 | 196 |
7 | 54 | 67 | 44 | 774 | 96 | 417 | 1170 | 2360 | 1050 | 1430 | 524 | 188 |
8 | 53 | 62 | 43 | 981 | 99 | 403 | 1100 | 2450 | 983 | 1230 | 589 | 183 |
9 | 51 | 56 | 45 | 1140 | 100 | 418 | 1020 | 2670 | 965 | 1140 | 698 | 178 |
10 | 58 | 52 | 48 | 1250 | 96 | 458 | 965 | 2920 | 1060 | 1050 | 725 | 167 |
11 | 52 | 50 | 51 | 1240 | 97 | 451 | 923 | 2880 | 1090 | 935 | 629 | 158 |
12 | 50 | 47 | 52 | 1100 | 128 | 425 | 881 | 2670 | 1040 | 839 | 531 | 152 |
13 | 49 | 46 | 48 | 870 | 206 | 385 | 838 | 2380 | 989 | 765 | 507 | 151 |
14 | 56 | 54 | 46 | 574 | 218 | 361 | 819 | 2080 | 1100 | 717 | 465 | 147 |
15 | 53 | 56 | 44 | 303 | 189 | 367 | 879 | 1850 | 1340 | 685 | 420 | 140 |
16 | 51 | 49 | 44 | 231 | 261 | 372 | 2920 | 1660 | 1520 | 669 | 390 | 140 |
17 | 51 | 47 | 43 | 226 | 698 | 406 | 6730 | 1490 | 1710 | 655 | 370 | 143 |
18 | 50 | 44 | 42 | 193 | 1110 | 822 | 7950 | 1340 | 1860 | 630 | 354 | 167 |
19 | 49 | 42 | 41 | 159 | 1340 | 1090 | 6190 | 1220 | 1890 | 606 | 342 | 148 |
20 | 49 | 43 | 41 | 137 | 1580 | 1570 | 4540 | 1100 | 1930 | 585 | 333 | 146 |
21 | 49 | 41 | 41 | 117 | 1610 | 2300 | 3850 | 1020 | 2080 | 565 | 322 | 142 |
22 | 50 | 41 | 47 | 111 | 1420 | 3070 | 3210 | 984 | 2250 | 547 | 311 | 135 |
23 | 48 | 42 | 62 | 138 | 1160 | 3240 | 2720 | 997 | 2370 | 556 | 296 | 128 |
24 | 51 | 40 | 93 | 193 | 907 | 2880 | 2320 | 1060 | 2370 | 625 | 285 | 120 |
25 | 55 | 39 | 178 | 226 | 662 | 2450 | 1970 | 1120 | 2210 | 610 | 279 | 114 |
26 | 53 | 38 | 233 | 211 | 481 | 2040 | 1710 | 1180 | 1870 | 573 | 276 | 112 |
27 | 54 | 38 | 160 | 184 | 757 | 1690 | 1510 | 1200 | 1460 | 695 | 267 | 109 |
28 | 49 | 39 | 98 | 165 | 902 | 1490 | 1350 | 1150 | 1140 | 722 | 256 | 107 |
29 | 52 | 39 | 78 | 147 | --- | 1410 | 1270 | 1070 | 971 | 646 | 249 | 105 |
30 | 49 | 41 | 69 | 134 | --- | 1340 | 1630 | 1000 | 2030 | 627 | 243 | 102 |
31 | 49 | --- | 64 | 119 | --- | 1280 | --- | 959 | --- | 679 | 233 | --- |
TOTAL | 1671 | 1423 | 2059 | 11673 | 14755 | 35311 | 65965 | 53840 | 42850 | 32361 | 13130 | 4675 |
MEAN | 53.9 | 47.4 | 66.4 | 377 | 527 | 1139 | 2199 | 1737 | 1428 | 1044 | 424 | 156 |
MAX | 73 | 67 | 233 | 1250 | 1610 | 3240 | 7950 | 2920 | 2370 | 2540 | 725 | 233 |
MIN | 48 | 38 | 41 | 54 | 96 | 361 | 819 | 959 | 862 | 547 | 233 | 102 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 1998, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 107 | 452 | 690 | 879 | 1044 | 1316 | 1543 | 1420 | 728 | 404 | 207 | 134 |
MAX | 488 | 3813 | 3510 | 3054 | 3355 | 4439 | 3740 | 6511 | 2062 | 1044 | 523 | 553 |
(WY) | 1985 | 1994 | 1983 | 1991 | 1982 | 1979 | 1989 | 1983 | 1995 | 1998 | 1973 | 1974 |
MIN | 27.3 | 26.1 | 31.0 | 27.2 | 48.8 | 73.6 | 67.4 | 117 | 38.9 | 30.8 | 21.8 | 20.6 |
(WY) | 1971 | 1972 | 1972 | 1972 | 1972 | 1981 | 1981 | 1987 | 1972 | 1971 | 1971 | 1971 |
SUMMARY STATISTICS | FOR 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1971 - 1998 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 288332 | 279713 | ||||
ANNUAL MEAN | 790 | 766 | 742 | |||
HIGHEST ANNUAL MEAN | 1515 | 1983 | ||||
LOWEST ANNUAL MEAN | 161 | 1972 | ||||
HIGHEST DAILY MEAN | 3500 | Jun 20 | 7950 | Apr 18 | 14000 | May 1 1996 |
LOWEST DAILY MEAN | 38 | Nov 26,27 | 38 | Nov 26,27 | 6.8 | Oct 13 1970 |
ANNUAL SEVEN-DAY MINIMUM | 39 | Nov 24 | 39 | Nov 24 | 7.3 | Aug 17 1971 |
INSTANTANEOUS PEAK FLOW | 8240 | Apr 18 | 14200 A | May 1 1996 | ||
INSTANTANEOUS PEAK STAGE | 25.48 | Apr 18 | 31.84 B | May 4 1983 | ||
INSTANTANEOUS LOW FLOW | 38 | Nov 26-29 | ||||
10 PERCENT EXCEEDS | 2210 | 2040 | 1890 | |||
50 PERCENT EXCEEDS | 482 | 414 | 345 | |||
90 PERCENT EXCEEDS | 49 | 49 | 43 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |