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 | 6870 | 8490 | 13200 | e13800 | 28700 | 41400 | 70500 | 47400 | 51900 | 63400 | 11800 | 10100 |
2 | 7520 | 8800 | 14300 | 12900 | 26600 | 41400 | 69700 | 48900 | 49200 | 62200 | 11000 | 9410 |
3 | 7090 | 8240 | 14200 | 11800 | 25800 | 40400 | 68700 | 50700 | 46300 | 60200 | 9860 | 8400 |
4 | 6600 | 8870 | 12200 | 12300 | 26900 | 38900 | 68600 | 52300 | 43500 | 57500 | 9800 | 7650 |
5 | 7260 | 9310 | 11600 | 15500 | 28000 | 37800 | 67600 | 53800 | 40800 | 54100 | 12900 | 6920 |
6 | 7940 | 9130 | 11500 | 20800 | 28500 | 36900 | 66600 | 54600 | 38200 | 51900 | 16200 | 6800 |
7 | 7250 | 8400 | 11600 | 24500 | 29000 | 35800 | 64800 | 54200 | 35900 | 50100 | 20500 | 6570 |
8 | 7280 | 8900 | 11600 | 27900 | 28800 | 35600 | 62400 | 55500 | 33700 | 49700 | 21800 | 6210 |
9 | 6890 | 8110 | 11300 | 32000 | 28700 | 38600 | 61800 | 57300 | 32600 | 49400 | 21600 | 6770 |
10 | 5980 | 7880 | 9800 | 34400 | 28400 | 39600 | 61800 | 60100 | 33100 | 48300 | 22600 | 8760 |
11 | 6980 | 7950 | 9820 | 36500 | 29600 | 41300 | 61200 | 64700 | 32400 | 48100 | 22400 | 9430 |
12 | 7720 | 7760 | 10700 | 37800 | 33500 | 42200 | 60100 | 69000 | 32500 | 48000 | 21700 | 8590 |
13 | 7570 | 7130 | 10900 | 38900 | 35600 | 42800 | 58600 | 72500 | 34400 | 47000 | 21000 | 6860 |
14 | 6800 | 7040 | 9950 | 39700 | 37000 | 43400 | 58600 | 74700 | 36900 | 46300 | 16800 | 7630 |
15 | 7000 | 7050 | 10000 | 40200 | 37400 | 43500 | 58600 | 75800 | 40500 | 45600 | 15300 | 6830 |
16 | 6850 | 6940 | 10800 | 40600 | 37500 | 44200 | 57400 | 76000 | 43700 | 44400 | 14300 | 7120 |
17 | 6540 | e7200 | 10300 | 40700 | 37600 | 44800 | 55600 | 75300 | 46900 | 43200 | 13800 | 7870 |
18 | 6740 | e7600 | 10100 | 40800 | 37900 | 47900 | 54100 | 73900 | 49700 | 42100 | 12600 | 7460 |
19 | 7030 | 7400 | 9330 | 40000 | 38500 | 50100 | 53200 | 72300 | 52600 | 40200 | 14700 | 7400 |
20 | 7090 | 6930 | 9370 | 39300 | 38800 | 52400 | 52400 | 70300 | 56800 | 38000 | 16000 | 6910 |
21 | 6740 | 6900 | 10800 | 38700 | 39000 | 56700 | 51700 | 69000 | 58300 | 35300 | 14200 | 6570 |
22 | 6570 | 7280 | 10300 | 37600 | 39300 | 62100 | 51200 | 65400 | 61000 | 33000 | 12100 | 6190 |
23 | 7450 | 7580 | 8800 | 36600 | 39400 | 66900 | 50400 | 63500 | 63200 | 31400 | 10400 | 5960 |
24 | 7020 | 7430 | 9710 | 35600 | 39300 | 70100 | 49600 | 62200 | 64300 | 29000 | 9080 | 6210 |
25 | 6370 | 7100 | 10100 | 34500 | 38800 | 72800 | 48800 | 62100 | 64500 | 27100 | 9130 | 6830 |
26 | 6560 | 6260 | 10800 | 33300 | 38600 | 74200 | 48200 | 62100 | 63900 | 24900 | 8950 | 6590 |
27 | 5830 | 7370 | 11700 | 32200 | 39700 | 74400 | 47200 | 61100 | 63000 | 22500 | 9420 | 5830 |
28 | 7040 | 8720 | 13600 | 31100 | 41000 | 73800 | 46300 | 60400 | 61600 | 20000 | 10200 | 6120 |
29 | 6710 | 8120 | 14000 | 30100 | --- | 73400 | 46300 | 58900 | 61500 | 16900 | 10900 | 6160 |
30 | 7210 | 11100 | 14000 | 29200 | --- | 72700 | 46100 | 56600 | 63400 | 14200 | 11400 | 5540 |
31 | 8390 | --- | 14200 | 29200 | --- | 71300 | --- | 54300 | --- | 13000 | 10800 | --- |
TOTAL | 216890 | 236990 | 350580 | 968500 | 957900 | 1607400 | 1718100 | 1934900 | 1456300 | 1257000 | 443240 | 215690 |
MEAN | 6996 | 7900 | 11310 | 31240 | 34210 | 51850 | 57270 | 62420 | 48540 | 40550 | 14300 | 7190 |
MAX | 8390 | 11100 | 14300 | 40800 | 41000 | 74400 | 70500 | 76000 | 64500 | 63400 | 22600 | 10100 |
MIN | 5830 | 6260 | 8800 | 11800 | 25800 | 35600 | 46100 | 47400 | 32400 | 13000 | 8950 | 5540 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1998, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 12870 | 14480 | 18160 | 20150 | 24130 | 33910 | 38030 | 36510 | 29740 | 21590 | 13970 | 11550 |
MAX | 54840 | 48900 | 78130 | 59540 | 67060 | 94940 | 93800 | 78160 | 87690 | 60820 | 50850 | 62870 |
(WY) | 1994 | 1986 | 1983 | 1993 | 1974 | 1985 | 1979 | 1970 | 1974 | 1993 | 1981 | 1993 |
MIN | 4258 | 5519 | 5923 | 4808 | 4144 | 10870 | 10010 | 11170 | 6207 | 6649 | 5709 | 5164 |
(WY) | 1965 | 1957 | 1963 | 1963 | 1963 | 1964 | 1956 | 1988 | 1988 | 1988 | 1941 | 1976 |
SUMMARY STATISTICS | FOR 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1939 - 1998 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 7674130 | 11363490 | ||||
ANNUAL MEAN | 21030 | 31130 | 22910 | |||
HIGHEST ANNUAL MEAN | 46810 | 1993 | ||||
LOWEST ANNUAL MEAN | 8977 | 1940 | ||||
HIGHEST DAILY MEAN | 87500 | Mar 6 | 76000 | May 16 | 123000 | May 27 1943 |
LOWEST DAILY MEAN | 5830 | Oct 27 | 5540 | Sep 30 | 1330 | Sep 2 1984 |
ANNUAL SEVEN-DAY MINIMUM | 6650 | Oct 21 | 6180 | Sep 24 | 2290 | Oct 8 1964 |
INSTANTANEOUS PEAK FLOW | 77400 A | May 16 | 123000 B | C | ||
INSTANTANEOUS PEAK STAGE | 19.27 D | May 17 | 28.61 E | May 26 1943 | ||
INSTANTANEOUS LOW FLOW | 5230 | Nov 26 | ||||
10 PERCENT EXCEEDS | 39300 | 62600 | 47900 | |||
50 PERCENT EXCEEDS | 15000 | 30100 | 16200 | |||
90 PERCENT EXCEEDS | 7330 | 6960 | 6560 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |