| DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 105 | 102 | 277 | 177 | 435 | 465 | 880 | 674 | 172 | 408 | 59 | 69 |
| 2 | 93 | 94 | 297 | 179 | 654 | 417 | 905 | 602 | 160 | 347 | 59 | 59 |
| 3 | 89 | 86 | 314 | 316 | 739 | 396 | 858 | 535 | 148 | 334 | 64 | 56 |
| 4 | 84 | 85 | 324 | 610 | 734 | 378 | 810 | 498 | 132 | 642 | 121 | 53 |
| 5 | 79 | 81 | 300 | 792 | 707 | 352 | 763 | 446 | 131 | 624 | 122 | 51 |
| 6 | 74 | 118 | 286 | 898 | 677 | 332 | 735 | 475 | 128 | 477 | 98 | 51 |
| 7 | 74 | 109 | 277 | 1160 | 661 | 302 | 731 | 1140 | 112 | 438 | 136 | 238 |
| 8 | 75 | 96 | 268 | 1300 | 646 | 450 | 1060 | 1660 | 106 | 401 | 243 | 158 |
| 9 | 81 | 95 | 258 | 1330 | 627 | 769 | 1480 | 1310 | 135 | 359 | 238 | 95 |
| 10 | 81 | 96 | 290 | 1080 | 597 | 737 | 1460 | 957 | 139 | 313 | 182 | 71 |
| 11 | 85 | 88 | 345 | 923 | 695 | 680 | 1190 | 807 | 211 | 275 | 130 | 59 |
| 12 | 77 | 90 | 323 | 827 | 953 | 622 | 986 | 732 | 265 | 234 | 98 | 52 |
| 13 | 113 | 90 | 289 | 758 | 980 | 586 | 905 | 785 | 267 | 199 | 89 | 49 |
| 14 | 131 | 87 | 265 | e640 | 951 | 543 | 884 | 877 | 240 | 162 | 80 | 65 |
| 15 | 109 | 113 | 252 | e580 | 900 | 499 | 885 | 794 | 213 | 144 | 96 | 198 |
| 16 | 92 | 124 | 246 | e500 | 857 | 447 | 1150 | 698 | 169 | 129 | 83 | 174 |
| 17 | 89 | 120 | 247 | e420 | 900 | 504 | 1740 | 601 | 139 | 118 | 82 | 109 |
| 18 | 85 | 114 | 243 | e390 | 1040 | 1080 | 1840 | 508 | 144 | 90 | 86 | 97 |
| 19 | 80 | 109 | 241 | e350 | 1020 | 1400 | 1730 | 422 | 261 | 81 | 80 | 82 |
| 20 | 79 | 108 | 242 | 342 | 954 | 1210 | 1610 | 352 | 209 | 84 | 77 | 106 |
| 21 | 82 | 132 | 248 | 301 | 891 | 1010 | 1700 | 297 | 152 | 83 | 87 | 137 |
| 22 | 80 | 154 | 246 | 279 | 810 | 928 | 1720 | 256 | 126 | 77 | 131 | 103 |
| 23 | 76 | 157 | 252 | 268 | 755 | 864 | 1550 | 228 | 102 | 76 | 103 | 75 |
| 24 | 86 | 150 | 248 | 261 | 709 | 807 | 1280 | 281 | 78 | 72 | 92 | 73 |
| 25 | 88 | 143 | 280 | 247 | 645 | 756 | 1030 | 265 | 74 | 71 | 160 | 73 |
| 26 | 141 | 152 | 282 | 232 | 588 | 707 | 973 | 241 | 863 | 68 | 109 | 68 |
| 27 | 313 | 166 | 257 | 233 | 555 | 660 | 963 | 223 | 941 | 60 | 69 | 54 |
| 28 | 208 | 206 | 229 | 233 | 521 | 615 | 867 | 207 | 826 | 60 | 113 | 51 |
| 29 | 142 | 219 | 217 | 255 | --- | 528 | 792 | 222 | 701 | 59 | 120 | 51 |
| 30 | 136 | 255 | 215 | 286 | --- | 460 | 737 | 218 | 515 | 58 | 87 | 62 |
| 31 | 119 | --- | 198 | 381 | --- | 611 | --- | 187 | --- | 60 | 76 | --- |
| TOTAL | 3246 | 3739 | 8256 | 16548 | 21201 | 20115 | 34214 | 17498 | 7859 | 6603 | 3370 | 2639 |
| MEAN | 105 | 125 | 266 | 534 | 757 | 649 | 1140 | 564 | 262 | 213 | 109 | 88.0 |
| MAX | 313 | 255 | 345 | 1330 | 1040 | 1400 | 1840 | 1660 | 941 | 642 | 243 | 238 |
| MIN | 74 | 81 | 198 | 177 | 435 | 302 | 731 | 187 | 74 | 58 | 59 | 49 |
| CFSM | .29 | .35 | .74 | 1.48 | 2.10 | 1.80 | 3.17 | 1.57 | .73 | .59 | .30 | .24 |
| IN. | .34 | .39 | .85 | 1.71 | 2.19 | 2.08 | 3.54 | 1.81 | .81 | .68 | .35 | .27 |
| STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 1998, BY WATER YEAR (WY) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MEAN | 144 | 212 | 232 | 235 | 305 | 636 | 630 | 403 | 268 | 172 | 129 | 129 |
| MAX | 1453 | 1187 | 1368 | 1046 | 1070 | 2216 | 1990 | 1557 | 1224 | 908 | 726 | 1191 |
| (WY) | 1987 | 1986 | 1983 | 1960 | 1974 | 1979 | 1993 | 1996 | 1996 | 1993 | 1972 | 1972 |
| MIN | .96 | 3.02 | 2.73 | 2.92 | 5.01 | 40.7 | 57.7 | 41.5 | 15.3 | 6.35 | .81 | .30 |
| (WY) | 1945 | 1954 | 1945 | 1945 | 1963 | 1945 | 1945 | 1946 | 1963 | 1946 | 1944 | 1944 |
| SUMMARY STATISTICS | FOR 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1941 - 1998 | |||
|---|---|---|---|---|---|---|
| ANNUAL TOTAL | 130047 | 145288 | ||||
| ANNUAL MEAN | 356 | 398 | 291 | |||
| HIGHEST ANNUAL MEAN | 656 | 1993 | ||||
| LOWEST ANNUAL MEAN | 31.4 | 1963 | ||||
| HIGHEST DAILY MEAN | 3500 | Feb 22 | 1840 | Apr 18 | 4870 | Oct 1 1986 |
| LOWEST DAILY MEAN | 65 | Aug 10 | 49 | Sep 13 | .00 | A |
| ANNUAL SEVEN-DAY MINIMUM | 71 | Sep 10 | 59 | Jul 27 | .00 | Aug 10 1944 |
| INSTANTANEOUS PEAK FLOW | 1860 | Apr 17 | 4900 | Oct 1 1986 | ||
| INSTANTANEOUS PEAK STAGE | 4.10 | Apr 17 | 10.88 | Oct 1 1986 | ||
| INSTANTANEOUS LOW FLOW | 45 | Sep 13,14 | ||||
| ANNUAL RUNOFF (CFSM) | .99 | 1.11 | .81 | |||
| ANNUAL RUNOFF (INCHES) | 13.44 | 15.01 | 10.98 | |||
| 10 PERCENT EXCEEDS | 681 | 933 | 768 | |||
| 50 PERCENT EXCEEDS | 264 | 246 | 131 | |||
| 90 PERCENT EXCEEDS | 85 | 76 | 10 | |||
|
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |