DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 33400 | 46200 | 44600 | e29000 | e35000 | 47200 | 52900 | 113000 | 139000 | 61900 | 85600 | 58800 |
2 | 33000 | 45900 | 44700 | e31000 | e34000 | 47300 | 53000 | 110000 | 137000 | 61800 | 84700 | 56300 |
3 | 29200 | 46000 | 44700 | e31000 | e35000 | 46900 | 53600 | 105000 | 130000 | 62200 | 84900 | 52400 |
4 | 29100 | 46500 | 45000 | e32000 | 39100 | 42200 | 58500 | 98800 | 125000 | 64200 | 85200 | 49800 |
5 | 28200 | 46600 | 45500 | e31000 | 39900 | 38900 | 64300 | 90100 | 120000 | 64600 | 85100 | 48900 |
6 | 29200 | 46500 | 46300 | e31000 | 39200 | 41200 | 67200 | 91900 | 113000 | 63500 | 82800 | 46200 |
7 | 29800 | 46400 | 44400 | e31000 | 38300 | 40400 | 73100 | 83100 | 110000 | 63300 | 76400 | 45500 |
8 | 29300 | 44800 | 44300 | e31000 | 39100 | 35200 | 77200 | 80300 | 104000 | 63100 | 73100 | 42300 |
9 | 29100 | 42900 | 44900 | e32000 | 40400 | 34300 | 84300 | 75800 | 99400 | 63300 | 69600 | 40900 |
10 | 28800 | 46400 | 42900 | e33000 | 40300 | 36500 | 92500 | 71500 | 95700 | 63900 | 67100 | 39500 |
11 | 29400 | 44300 | 41300 | e33000 | 42600 | 42100 | 97600 | 70300 | 95300 | 63900 | 64800 | 39200 |
12 | 32200 | 46800 | 40900 | e34000 | 48100 | 43400 | 100000 | 71100 | 92200 | 62200 | 61500 | 41300 |
13 | 33600 | 48300 | 40900 | e35000 | 49100 | 43000 | 103000 | 78400 | 92700 | 62300 | 61500 | 41900 |
14 | 31800 | 50600 | 41000 | e36000 | 46200 | 42600 | 107000 | 85700 | 92600 | 63600 | 61700 | 43100 |
15 | 30800 | 50600 | 41100 | e35000 | 45200 | 42100 | 112000 | 91600 | 87700 | 64300 | 60600 | 43500 |
16 | 29800 | 51400 | 41400 | e35000 | 50100 | 40800 | 118000 | 98100 | 81400 | 67500 | 57500 | 43900 |
17 | 27700 | 53100 | 41800 | e34000 | 53900 | 43100 | 120000 | 106000 | 77000 | 69500 | 51000 | 44300 |
18 | 36000 | 52800 | 40100 | e34000 | 52500 | 43400 | 120000 | 130000 | 76700 | 71300 | 50700 | 44000 |
19 | 43600 | 52500 | 39700 | e34000 | 51300 | 42300 | 119000 | 144000 | 76900 | 71000 | 50400 | 43400 |
20 | 49500 | 50400 | 40000 | e34000 | 50700 | 43200 | 116000 | 144000 | 75900 | 68200 | 50200 | 42700 |
21 | 47400 | 48800 | 39800 | e34000 | 48900 | 49500 | 113000 | 135000 | 75200 | 68200 | 50600 | 42500 |
22 | 47800 | 47400 | 34800 | e35000 | 45600 | 56200 | 111000 | 124000 | 73900 | 76300 | 55200 | 40900 |
23 | 44600 | 46800 | 27400 | e37000 | 43800 | 56100 | 115000 | 120000 | 70000 | 86900 | 57100 | 38900 |
24 | 42300 | 48000 | e21000 | e41000 | 41300 | 55500 | 122000 | 122000 | 68600 | 93500 | 59800 | 38000 |
25 | 40600 | 48200 | e19000 | e41000 | 41800 | 55400 | 122000 | 130000 | 68400 | 97000 | 63200 | 37600 |
26 | 41600 | 48500 | e18000 | e40000 | 41000 | 55300 | 120000 | 133000 | 67900 | 97100 | 65600 | 37100 |
27 | 46000 | 47500 | e19000 | e39000 | 40500 | 55000 | 117000 | 136000 | 66900 | 96800 | 65200 | 36600 |
28 | 45000 | 46200 | e19000 | e36000 | 44200 | 55200 | 116000 | 138000 | 66000 | 96400 | 64500 | 42100 |
29 | 43200 | 46200 | e22000 | e37000 | --- | 55100 | 115000 | 139000 | 64600 | 95300 | 63900 | 40800 |
30 | 43000 | 44400 | e27000 | e37000 | --- | 55500 | 115000 | 140000 | 62000 | 92400 | 63100 | 36700 |
31 | 44100 | --- | e27000 | e36000 | --- | 55500 | --- | 139000 | --- | 89000 | 61900 | --- |
TOTAL | 1129100 | 1431000 | 1129500 | 1069000 | 1217100 | 1440400 | 2955200 | 3394700 | 2705000 | 2284500 | 2034500 | 1299100 |
MEAN | 36420 | 47700 | 36440 | 34480 | 43470 | 46460 | 98510 | 109500 | 90170 | 73690 | 65630 | 43300 |
MAX | 49500 | 53100 | 46300 | 41000 | 53900 | 56200 | 122000 | 144000 | 139000 | 97100 | 85600 | 58800 |
MIN | 27700 | 42900 | 18000 | 29000 | 34000 | 34300 | 52900 | 70300 | 62000 | 61800 | 50200 | 36600 |
AC-FT | 2240000 | 2838000 | 2240000 | 2120000 | 2414000 | 2857000 | 5862000 | 6733000 | 5365000 | 4531000 | 4035000 | 2577000 |
CFSM | .43 | .56 | .43 | .40 | .51 | .54 | 1.15 | 1.28 | 1.05 | .86 | .77 | .51 |
IN. | .49 | .62 | .49 | .46 | .53 | .63 | 1.28 | 1.48 | 1.18 | .99 | .88 | .56 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1874 - 1999, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 40880 | 39310 | 27870 | 25740 | 28050 | 50600 | 89810 | 81780 | 68700 | 55860 | 37790 | 38050 |
MAX | 203600 | 146800 | 73590 | 54100 | 65680 | 127500 | 175900 | 212400 | 182100 | 198900 | 113400 | 92380 |
(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 1998 CALENDAR YEAR | FOR 1999 WATER YEAR | WATER YEARS 1874 - 1999 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 20584300 | 22089100 | ||||
ANNUAL MEAN | 56400 | 60520 | 48750 | |||
HIGHEST ANNUAL MEAN | 94690 | 1882 | ||||
LOWEST ANNUAL MEAN | 18870 | 1934 | ||||
HIGHEST DAILY MEAN | 178000 | Apr 11 | 144000 | May 19,20 | 307000 | Apr 28 1965 |
LOWEST DAILY MEAN | 18000 | Jan 16 | 18000 | Dec 26 | 6500 | Dec 25 1933 |
ANNUAL SEVEN-DAY MINIMUM | 20300 | Jan 13 | 20700 | Dec 24 | 7430 | Dec 24 1933 |
INSTANTANEOUS PEAK FLOW | 146000 | May 19 | ||||
INSTANTANEOUS PEAK STAGE | 16.39 | May 20 | 24.65 | Apr 28 1965 | ||
ANNUAL RUNOFF (AC-FT) | 40830000 | 43810000 | 35320000 | |||
ANNUAL RUNOFF (CFSM) | .66 | .71 | .57 | |||
ANNUAL RUNOFF (INCHES) | 8.95 | 9.60 | 7.74 | |||
10 PERCENT EXCEEDS | 105000 | 111000 | 94600 | |||
50 PERCENT EXCEEDS | 46200 | 48900 | 37500 | |||
90 PERCENT EXCEEDS | 27500 | 33500 | 19000 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |