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 | 34800 | 42000 | 36900 | 27300 | 36700 | 78500 | 108000 | 87300 | 50200 | 101000 | 33000 | 34600 |
2 | 35100 | 42400 | 34500 | 26000 | 38300 | 81500 | 128000 | 79500 | 47800 | 106000 | 34700 | 32500 |
3 | 35200 | 42200 | 32800 | 25700 | 38600 | 85900 | 130000 | 76300 | 45400 | 116000 | 33900 | 30600 |
4 | 35000 | 41900 | 33400 | 27500 | 37800 | 85000 | 122000 | 73900 | 50500 | 125000 | 33800 | 29100 |
5 | 33900 | 40700 | 35100 | 32700 | 37800 | 87300 | 124000 | 70200 | 51100 | 131000 | 34900 | 29300 |
6 | 29100 | 40400 | 35700 | 37500 | 37600 | 89700 | 130000 | 66400 | 49600 | 136000 | 41200 | 28100 |
7 | 29600 | 40600 | 36400 | 40400 | 36800 | 94100 | 140000 | 63000 | 47100 | 139000 | 45200 | 27500 |
8 | 33100 | 40600 | 36200 | 40300 | 36000 | 99600 | 152000 | 61200 | 44600 | 138000 | 46300 | 28400 |
9 | 36200 | 40600 | 36400 | 36100 | 35000 | 102000 | 164000 | 60200 | 44600 | 133000 | 46000 | 28700 |
10 | 38300 | 40600 | 37600 | 30500 | 33700 | 99800 | 173000 | 59900 | 48600 | 125000 | 41200 | 28700 |
11 | 35600 | 41400 | 37400 | e27000 | 32000 | 97600 | 178000 | 61000 | 52800 | 113000 | 39800 | 27900 |
12 | 33200 | 41100 | 36300 | e25000 | 35800 | 94300 | 176000 | 60300 | e55000 | 104000 | 45300 | 26600 |
13 | 35500 | 40100 | 34500 | e24000 | 36400 | 86600 | 175000 | 58500 | e56000 | 96900 | 47300 | 25300 |
14 | 42600 | 39100 | 33900 | e21000 | 37300 | 76800 | 171000 | 52300 | e58000 | 86300 | 40000 | 26400 |
15 | 49100 | 39700 | 33400 | e20000 | 37000 | 70700 | 165000 | 42900 | e58000 | 75700 | 26400 | 32100 |
16 | 51600 | 40900 | 34200 | e18000 | 37400 | 69400 | 160000 | 44000 | e59000 | 69400 | 28700 | 33000 |
17 | 53700 | 40800 | 35100 | e18000 | 40000 | 64700 | 156000 | 50600 | 60000 | 64300 | 36200 | 30700 |
18 | 55900 | 40800 | 35900 | e19000 | 40100 | 59300 | 152000 | 49500 | 61900 | 60400 | 39400 | 29200 |
19 | 57300 | 38400 | 35800 | e22000 | 39900 | 57600 | 147000 | 53900 | 72900 | 54200 | 39200 | 26700 |
20 | 59000 | 35300 | 35100 | e25000 | 46700 | 60300 | 139000 | 55900 | 85100 | 51700 | 36200 | 25500 |
21 | 58800 | 34400 | 33700 | e30000 | 55100 | 60500 | 131000 | 54500 | e86000 | 52100 | 37500 | 24600 |
22 | 56500 | 32900 | 33100 | 37500 | 54400 | 59200 | 125000 | 52700 | 77000 | 54500 | 41700 | 23300 |
23 | 53900 | 30200 | 33400 | 41100 | 56600 | 60800 | 120000 | 51300 | 77100 | 55500 | 45400 | 23000 |
24 | 50400 | 25300 | 33000 | 41400 | 59400 | 61400 | 117000 | 52100 | 78400 | 51400 | 43500 | 25700 |
25 | 51400 | 24100 | 33900 | 41100 | 59900 | 58500 | 110000 | 55800 | 79000 | 48600 | 38000 | 29100 |
26 | 45600 | 33700 | 33600 | 41000 | 60600 | 53800 | 107000 | 58000 | 78400 | 46600 | 47100 | 27200 |
27 | 41300 | 40300 | 30300 | 40900 | 64800 | 51100 | 102000 | 56600 | 74900 | 46100 | 50200 | 25400 |
28 | 42000 | 38700 | 28300 | 40300 | 71900 | 51100 | 95200 | 50400 | 75900 | 41400 | 48200 | 25000 |
29 | 43500 | 39200 | 25400 | 39000 | --- | 58500 | 93300 | 48900 | 85000 | 37100 | 40500 | 24400 |
30 | 44000 | 37100 | 24900 | 37900 | --- | 61100 | 92500 | 52400 | 92800 | 32900 | 36000 | 29800 |
31 | 42100 | --- | 25300 | 37000 | --- | 79500 | --- | 54000 | --- | 31300 | 36900 | --- |
TOTAL | 1343300 | 1145500 | 1041500 | 970200 | 1233600 | 2296200 | 4083000 | 1813500 | 1902700 | 2523400 | 1233700 | 838400 |
MEAN | 43330 | 38180 | 33600 | 31300 | 44060 | 74070 | 136100 | 58500 | 63420 | 81400 | 39800 | 27950 |
MAX | 59000 | 42400 | 37600 | 41400 | 71900 | 102000 | 178000 | 87300 | 92800 | 139000 | 50200 | 34600 |
MIN | 29100 | 24100 | 24900 | 18000 | 32000 | 51100 | 92500 | 42900 | 44600 | 31300 | 26400 | 23000 |
AC-FT | 2664000 | 2272000 | 2066000 | 1924000 | 2447000 | 4555000 | 8099000 | 3597000 | 3774000 | 5005000 | 2447000 | 1663000 |
CFSM | .51 | .45 | .39 | .37 | .51 | .87 | 1.59 | .68 | .74 | .95 | .46 | .33 |
IN. | .58 | .50 | .45 | .42 | .54 | 1.00 | 1.77 | .79 | .83 | 1.10 | .54 | .36 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1874 - 1998, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 41090 | 39300 | 27910 | 25740 | 27970 | 50760 | 90230 | 81660 | 68210 | 55780 | 37950 | 38080 |
MAX | 203600 | 146800 | 73590 | 54100 | 65680 | 127500 | 175900 | 212400 | 182100 | 198900 | 113400 | 92410 |
(WY) | 1882 | 1882 | 1882 | 1973 | 1966 | 1973 | 1997 | 1888 | 1892 | 1993 | 1993 | 1938 |
MIN | 13490 | 13760 | 11120 | 11390 | 14000 | 17600 | 26040 | 23190 | 15420 | 14690 | 12460 | 13870 |
(WY) | 1934 | 1934 | 1934 | 1890 | 1893 | 1934 | 1931 | 1977 | 1988 | 1988 | 1936 | 1933 |
SUMMARY STATISTICS | FOR 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1874 - 1998 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 23480300 | 20425000 | ||||
ANNUAL MEAN | 64330 | 55960 | 48770 | |||
HIGHEST ANNUAL MEAN | 94690 | 1882 | ||||
LOWEST ANNUAL MEAN | 18870 | 1934 | ||||
HIGHEST DAILY MEAN | 237000 | Apr 19 | 178000 | Apr 11,12 | 307000 | Apr 28 1965 |
LOWEST DAILY MEAN | 24100 | Nov 25 | 18000 | Jan 16,17 | 6500 | Dec 25 1933 |
ANNUAL SEVEN-DAY MINIMUM | 28800 | Dec 25 | 20300 | Jan 13 | 7430 | Dec 24 1933 |
INSTANTANEOUS PEAK FLOW | 178000 | Apr 11,12 | ||||
INSTANTANEOUS PEAK STAGE | 18.21 | Apr 11,12 | 24.65 | Apr 28 1965 | ||
ANNUAL RUNOFF (AC-FT) | 46570000 | 40510000 | 35330000 | |||
ANNUAL RUNOFF (CFSM) | .75 | .65 | .57 | |||
ANNUAL RUNOFF (INCHES) | 10.20 | 8.88 | 7.74 | |||
10 PERCENT EXCEEDS | 113000 | 105000 | 94300 | |||
50 PERCENT EXCEEDS | 51400 | 42600 | 37500 | |||
90 PERCENT EXCEEDS | 35300 | 28200 | 19000 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |