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 | 6150 | 5920 | 6920 | 12600 | 14500 | 20000 | 65800 | 66400 | 45800 | 82100 | 49100 | 13400 |
2 | 5840 | 5910 | 7730 | 11700 | 14800 | 18300 | 66400 | 74800 | 40600 | 74400 | 44800 | 13200 |
3 | 5580 | 5890 | 9360 | 10900 | 14800 | 17200 | 68300 | 81200 | 35700 | 70600 | 37800 | 12900 |
4 | 5360 | 5840 | 10800 | 10200 | 14400 | 16600 | 69800 | 88800 | 32400 | 68100 | 32600 | 12600 |
5 | 5190 | 5890 | 11000 | 9820 | 14100 | 16000 | 70200 | 92100 | 30200 | 63100 | 30200 | 12400 |
6 | 5000 | 6050 | 10500 | 9830 | 13500 | 15100 | 69600 | 92600 | 29400 | 53400 | 35500 | 12200 |
7 | 4850 | 6190 | 9990 | 11500 | 12900 | 14200 | 68100 | 95200 | 27400 | 51700 | 46600 | 12100 |
8 | 4820 | 6320 | 9400 | 18900 | 12500 | 13700 | 65300 | 102000 | 25600 | 66400 | 56600 | 12300 |
9 | 4900 | 6430 | 9110 | 28700 | 12300 | 14200 | 61800 | 108000 | 25400 | 74700 | 56400 | 11200 |
10 | 4920 | 6270 | 9190 | 35700 | 12100 | 17400 | 59500 | 113000 | 32300 | 75700 | 55400 | 9660 |
11 | 4890 | 6110 | 9150 | 40300 | 12800 | 23400 | 58900 | 115000 | 39100 | 71600 | 55400 | 8850 |
12 | 4830 | 5870 | 9040 | 42400 | 15000 | 34200 | 59100 | 112000 | 42700 | 65900 | 55800 | 8510 |
13 | 4910 | 5760 | 8830 | 43900 | 15800 | 41500 | 60000 | 107000 | 48500 | 61500 | 53100 | 8830 |
14 | 4930 | 5800 | 8750 | 44500 | 17800 | 45000 | 61900 | 102000 | 55900 | 58700 | 48600 | 9600 |
15 | 4860 | 5890 | 9010 | 43500 | 19900 | 46500 | 65300 | 96700 | 62300 | 54900 | 43400 | 9420 |
16 | 4850 | 5950 | 9310 | 40300 | 20700 | 45600 | 81000 | 87900 | 67200 | 50500 | 38100 | 8630 |
17 | 4750 | 5950 | 9440 | 35200 | 21700 | 42300 | 92900 | 75300 | 72600 | 44800 | 33900 | 7780 |
18 | 4790 | 5920 | 9290 | 30000 | 25000 | 40200 | 102000 | 62800 | 80900 | 39600 | 31100 | 7270 |
19 | 4810 | 5900 | 9010 | 26400 | 28200 | 42900 | 111000 | 49400 | 93600 | 35800 | 28900 | 7050 |
20 | 4820 | 5980 | 8690 | 23700 | 27500 | 48100 | 119000 | 39300 | 109000 | 32900 | 27100 | 6930 |
21 | 4850 | 6010 | 8330 | 20900 | 26700 | 56700 | 120000 | 35700 | 124000 | 30500 | 25400 | 6930 |
22 | 5150 | 5990 | 8430 | 18700 | 27700 | 62100 | 116000 | 40200 | 145000 | 28900 | 23100 | 6780 |
23 | 5280 | 5950 | 8380 | 17500 | 29800 | 66300 | 108000 | 49500 | 168000 | 29400 | 20900 | 6710 |
24 | 5440 | 5950 | 8440 | 17800 | 30600 | 70000 | 98800 | 54200 | 174000 | 35300 | 19100 | 6910 |
25 | 5330 | 5950 | 8790 | 16800 | 29900 | 74200 | 89400 | 59600 | 168000 | 44200 | 17500 | 6890 |
26 | 5440 | 6010 | 9350 | 16000 | 28400 | 79500 | 80000 | 63700 | 156000 | 49300 | 16300 | 6700 |
27 | 5350 | 6120 | 9710 | 15600 | 25900 | 83200 | 69000 | 65800 | 140000 | 48700 | 15300 | 6580 |
28 | 5410 | 6510 | 10900 | 15500 | 22700 | 83600 | 56700 | 66000 | 125000 | 47400 | 14800 | 6420 |
29 | 5510 | 6620 | 12800 | 15300 | --- | 77400 | 47700 | 63900 | 111000 | 46100 | 14500 | 6320 |
30 | 5720 | 6610 | 14200 | 14900 | --- | 70200 | 50900 | 60400 | 96100 | 45900 | 14100 | 6280 |
31 | 5770 | --- | 13700 | 14400 | --- | 66700 | --- | 54100 | --- | 50000 | 13700 | --- |
TOTAL | 160300 | 181560 | 297550 | 713450 | 562000 | 1362300 | 2312400 | 2374600 | 2403700 | 1652100 | 1055100 | 271350 |
MEAN | 5171 | 6052 | 9598 | 23010 | 20070 | 43950 | 77080 | 76600 | 80120 | 53290 | 34040 | 9045 |
MAX | 6150 | 6620 | 14200 | 44500 | 30600 | 83600 | 120000 | 115000 | 174000 | 82100 | 56600 | 13400 |
MIN | 4750 | 5760 | 6920 | 9820 | 12100 | 13700 | 47700 | 35700 | 25400 | 28900 | 13700 | 6280 |
CFSM | .18 | .21 | .34 | .80 | .70 | 1.53 | 2.69 | 2.68 | 2.80 | 1.86 | 1.19 | .32 |
IN. | .21 | .24 | .39 | .93 | .73 | 1.77 | 3.00 | 3.08 | 3.12 | 2.15 | 1.37 | .35 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1928 - 1998, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 9205 | 15570 | 25650 | 37730 | 40490 | 50490 | 50820 | 42290 | 28790 | 19360 | 12150 | 8992 |
MAX | 37700 | 87950 | 92340 | 199300 | 147100 | 108700 | 106400 | 144100 | 80120 | 73580 | 75530 | 50670 |
(WY) | 1994 | 1994 | 1986 | 1950 | 1950 | 1985 | 1938 | 1996 | 1998 | 1958 | 1979 | 1989 |
MIN | 2465 | 2632 | 2266 | 2861 | 3758 | 4815 | 11900 | 5805 | 5035 | 3366 | 2372 | 2572 |
(WY) | 1941 | 1931 | 1964 | 1977 | 1931 | 1941 | 1941 | 1934 | 1988 | 1936 | 1936 | 1940 |
SUMMARY STATISTICS | FOR 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1928 - 1998 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 11806750 | 13346410 | ||||
ANNUAL MEAN | 32350 | 36570 | 28400 | |||
HIGHEST ANNUAL MEAN | 56740 | 1950 | ||||
LOWEST ANNUAL MEAN | 6144 | 1941 | ||||
HIGHEST DAILY MEAN | 142000 | Mar 7 | 174000 | Jun 24 | 302000 | May 25 1943 |
LOWEST DAILY MEAN | 4750 | Oct 17 | 4750 | Oct 17 | 1650 | Sep 27 1941 |
ANNUAL SEVEN-DAY MINIMUM | 4820 | Oct 15 | 4820 | Oct 15 | 1700 | Dec 19 1963 |
INSTANTANEOUS PEAK FLOW | 175000 | Jun 24 | 305000 | May 25 1943 | ||
INSTANTANEOUS PEAK STAGE | 29.03 | Jun 24 | 31.75 | Jan 7 1991 | ||
ANNUAL RUNOFF (CFSM) | 1.13 | 1.28 | .99 | |||
ANNUAL RUNOFF (INCHES) | 15.34 | 17.34 | 13.47 | |||
10 PERCENT EXCEEDS | 78700 | 82500 | 68300 | |||
50 PERCENT EXCEEDS | 18200 | 25400 | 16600 | |||
90 PERCENT EXCEEDS | 5860 | 5890 | 4370 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |