COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PST) | Discharge |
| 2026-02-08 18:00 | 151306 | | |
| 2026-02-08 17:00 | 143706 | | |
| 2026-02-08 16:00 | 128438 | | |
| 2026-02-08 15:00 | 116281 | | |
| 2026-02-08 14:00 | 111950 | | |
| 2026-02-08 13:00 | 111912 | | |
| 2026-02-08 12:00 | 112750 | | |
| 2026-02-08 11:00 | 112500 | | |
| 2026-02-08 10:00 | 111200 | | |
| 2026-02-08 09:00 | 110431 | | |
| 2026-02-08 08:00 | 108463 | | |
| 2026-02-08 07:00 | 101188 | | |
| 2026-02-08 06:00 | 91119 | | |
| 2026-02-08 05:00 | 85244 | | |
| 2026-02-08 04:00 | 84306 | | |
| 2026-02-08 03:00 | 84981 | | |
| 2026-02-08 02:00 | 86481 | | |
| 2026-02-08 01:00 | 89619 | | |
| 2026-02-08 00:00 | 93775 | | |
| 2026-02-07 23:00 | 96794 | | |
| 2026-02-07 22:00 | 98912 | | |
| 2026-02-07 21:00 | 103731 | | |
| 2026-02-07 20:00 | 112994 | | |
| 2026-02-07 19:00 | 122500 | | |
| 2026-02-07 18:00 | 124731 | | |
| 2026-02-07 17:00 | 116869 | | |
| 2026-02-07 16:00 | 105444 | | |
| 2026-02-07 15:00 | 99619 | | |
| 2026-02-07 14:00 | 100906 | | |
| 2026-02-07 13:00 | 104119 | | |
| 2026-02-07 12:00 | 105694 | | |
| 2026-02-07 11:00 | 106450 | | |
| 2026-02-07 10:00 | 107675 | | |
| 2026-02-07 09:00 | 108150 | | |
| 2026-02-07 08:00 | 106819 | | |
| 2026-02-07 07:00 | 104994 | | |
| 2026-02-07 06:00 | 103975 | | |
| 2026-02-07 05:00 | 103875 | | |
| 2026-02-07 04:00 | 104263 | | |
| 2026-02-07 03:00 | 104237 | | |
| 2026-02-07 02:00 | 103269 | | |
| 2026-02-07 01:00 | 101456 | | |
| 2026-02-07 00:00 | 99938 | | |
| 2026-02-06 23:00 | 100550 | | |
| 2026-02-06 22:00 | 103544 | | |
| 2026-02-06 21:00 | 107931 | | |
| 2026-02-06 20:00 | 112150 | | |
| 2026-02-06 19:00 | 113737 | | |
| 2026-02-06 18:00 | 111237 | | |
| 2026-02-06 17:00 | 105525 | | |
| 2026-02-06 16:00 | 99575 | | |
| 2026-02-06 15:00 | 96644 | | |
| 2026-02-06 14:00 | 97881 | | |
| 2026-02-06 13:00 | 103719 | | |
| 2026-02-06 12:00 | 114050 | | |
| 2026-02-06 11:00 | 125319 | | |
| 2026-02-06 10:00 | 135419 | | |
| 2026-02-06 09:00 | 147162 | | |
| 2026-02-06 08:00 | 157406 | | |
| 2026-02-06 07:00 | 156631 | | |
| 2026-02-06 06:00 | 145188 | | |
| 2026-02-06 05:00 | 132225 | | |
| 2026-02-06 04:00 | 122369 | | |
| 2026-02-06 03:00 | 116031 | | |
| 2026-02-06 02:00 | 112806 | | |
| 2026-02-06 01:00 | 111138 | | |
| 2026-02-06 00:00 | 110763 | | |
| 2026-02-05 23:00 | 112888 | | |
| 2026-02-05 22:00 | 117756 | | |
| 2026-02-05 21:00 | 124588 | | |
| 2026-02-05 20:00 | 130262 | | |
| 2026-02-05 19:00 | 130000 | | |
| 2026-02-05 18:00 | 123950 | | |
| 2026-02-05 17:00 | 115775 | | |
| 2026-02-05 16:00 | 106737 | | |
| 2026-02-05 15:00 | 98037 | | |
| 2026-02-05 14:00 | 91938 | | |
| 2026-02-05 13:00 | 90100 | | |
| 2026-02-05 12:00 | 93963 | | |
| 2026-02-05 11:00 | 104350 | | |
| 2026-02-05 10:00 | 119975 | | |
| 2026-02-05 09:00 | 134775 | | |
| 2026-02-05 08:00 | 139988 | | |
| 2026-02-05 07:00 | 133725 | | |
| 2026-02-05 06:00 | 121675 | | |
| 2026-02-05 05:00 | 109425 | | |
| 2026-02-05 04:00 | 101719 | | |
| 2026-02-05 03:00 | 101006 | | |
| 2026-02-05 02:00 | 104750 | | |
| 2026-02-05 01:00 | 109450 | | |
| 2026-02-05 00:00 | 112694 | | |
| 2026-02-04 23:00 | 112731 | | |
| 2026-02-04 22:00 | 112425 | | |
| 2026-02-04 21:00 | 116406 | | |
| 2026-02-04 20:00 | 121263 | | |
| 2026-02-04 19:00 | 118881 | | |
| 2026-02-04 18:00 | 107000 | | |
| 2026-02-04 17:00 | 90131 | | |
| 2026-02-04 16:00 | 75987 | | |
| 2026-02-04 15:00 | 70588 | | |
| 2026-02-04 14:00 | 72619 | | |
| 2026-02-04 13:00 | 76950 | | |
| 2026-02-04 12:00 | 82269 | | |
| 2026-02-04 11:00 | 90088 | | |
| 2026-02-04 10:00 | 101213 | | |
| 2026-02-04 09:00 | 114100 | | |
| 2026-02-04 08:00 | 122838 | | |
| 2026-02-04 07:00 | 123606 | | |
| 2026-02-04 06:00 | 120888 | | |
| 2026-02-04 05:00 | 118694 | | |
| 2026-02-04 04:00 | 116213 | | |
| 2026-02-04 03:00 | 114044 | | |
| 2026-02-04 02:00 | 114294 | | |
| 2026-02-04 01:00 | 118688 | | |
| 2026-02-04 00:00 | 126169 | | |
| 2026-02-03 23:00 | 129475 | | |
| 2026-02-03 22:00 | 125306 | | |
| 2026-02-03 21:00 | 121388 | | |
| 2026-02-03 20:00 | 122037 | | |
| 2026-02-03 19:00 | 122050 | | |
| 2026-02-03 18:00 | 117331 | | |
| 2026-02-03 17:00 | 108487 | | |
| 2026-02-03 16:00 | 99031 | | |
| 2026-02-03 15:00 | 94506 | | |
| 2026-02-03 14:00 | 97481 | | |
| 2026-02-03 13:00 | 104119 | | |
| 2026-02-03 12:00 | 108713 | | |
| 2026-02-03 11:00 | 110125 | | |
| 2026-02-03 10:00 | 112100 | | |
| 2026-02-03 09:00 | 117406 | | |
| 2026-02-03 08:00 | 124931 | | |
| 2026-02-03 07:00 | 133831 | | |
| 2026-02-03 06:00 | 141844 | | |
| 2026-02-03 05:00 | 142344 | | |
| 2026-02-03 04:00 | 135656 | | |
| 2026-02-03 03:00 | 130525 | | |
| 2026-02-03 02:00 | 129244 | | |
| 2026-02-03 01:00 | 128206 | | |
| 2026-02-03 00:00 | 127900 | | |
| 2026-02-02 23:00 | 131119 | | |
| 2026-02-02 22:00 | 138262 | | |
| 2026-02-02 21:00 | 147650 | | |
| 2026-02-02 20:00 | 155406 | | |
| 2026-02-02 19:00 | 157481 | | |
| 2026-02-02 18:00 | 152031 | | |
| 2026-02-02 17:00 | 137412 | | |
| 2026-02-02 16:00 | 118194 | | |
| 2026-02-02 15:00 | 107781 | | |
| 2026-02-02 14:00 | 111131 | | |
| 2026-02-02 13:00 | 119775 | | |
| 2026-02-02 12:00 | 127025 | | |
| 2026-02-02 11:00 | 131750 | | |
| 2026-02-02 10:00 | 135113 | | |
| 2026-02-02 09:00 | 138606 | | |
| 2026-02-02 08:00 | 137644 | | |
| 2026-02-02 07:00 | 127675 | | |
| 2026-02-02 06:00 | 114031 | | |
| 2026-02-02 05:00 | 102900 | | |
| 2026-02-02 04:00 | 95350 | | |
| 2026-02-02 03:00 | 91862 | | |
| 2026-02-02 02:00 | 92331 | | |
| 2026-02-02 01:00 | 95856 | | |
| 2026-02-02 00:00 | 101519 | | |
| 2026-02-01 23:00 | 108513 | | |
| 2026-02-01 22:00 | 116625 | | |
| 2026-02-01 21:00 | 125081 | | |
| 2026-02-01 20:00 | 132056 | | |
| 2026-02-01 19:00 | 134694 | | |
| 2026-02-01 18:00 | 128181 | | |
| 2026-02-01 17:00 | 110731 | | |
| 2026-02-01 16:00 | 91150 | | |
| 2026-02-01 15:00 | 80588 | | |
| 2026-02-01 14:00 | 79513 | | |
| 2026-02-01 13:00 | 82319 | | |
| 2026-02-01 12:00 | 85825 | | |
| 2026-02-01 11:00 | 89681 | | |
| 2026-02-01 10:00 | 95525 | | |
| 2026-02-01 09:00 | 104388 | | |
| 2026-02-01 08:00 | 112550 | | |
| 2026-02-01 07:00 | 115638 | | |
| 2026-02-01 06:00 | 114794 | | |
| 2026-02-01 05:00 | 112306 | | |
| 2026-02-01 04:00 | 108569 | | |
| 2026-02-01 03:00 | 105856 | | |
| 2026-02-01 02:00 | 107400 | | |
| 2026-02-01 01:00 | 112881 | | |
| 2026-02-01 00:00 | 119150 | | |
| 2026-01-31 23:00 | 125100 | | |
| 2026-01-31 22:00 | 132375 | | |
| 2026-01-31 21:00 | 141062 | | |
| 2026-01-31 20:00 | 148287 | | |
| 2026-01-31 19:00 | 150331 | | |
| 2026-01-31 18:00 | 141975 | | |
| 2026-01-31 17:00 | 120581 | | |
| 2026-01-31 16:00 | 95162 | | |
| 2026-01-31 15:00 | 79175 | | |
| 2026-01-31 14:00 | 75219 | | |
| 2026-01-31 13:00 | 77062 | | |
| 2026-01-31 12:00 | 80381 | | |
| 2026-01-31 11:00 | 85219 | | |
| 2026-01-31 10:00 | 92919 | | |
| 2026-01-31 09:00 | 102725 | | |
| 2026-01-31 08:00 | 109987 | | |
| 2026-01-31 07:00 | 111650 | | |
| 2026-01-31 06:00 | 110831 | | |
| 2026-01-31 05:00 | 111444 | | |
| 2026-01-31 04:00 | 113575 | | |
| 2026-01-31 03:00 | 114900 | | |
| 2026-01-31 02:00 | 114581 | | |
| 2026-01-31 01:00 | 114431 | | |
| 2026-01-31 00:00 | 116544 | | |
| 2026-01-30 23:00 | 122575 | | |
| 2026-01-30 22:00 | 132075 | | |
| 2026-01-30 21:00 | 141706 | | |
| 2026-01-30 20:00 | 148662 | | |
| 2026-01-30 19:00 | 151938 | | |
| 2026-01-30 18:00 | 148213 | | |
| 2026-01-30 17:00 | 132606 | | |
| 2026-01-30 16:00 | 111544 | | |
| 2026-01-30 15:00 | 99750 | | |
| 2026-01-30 14:00 | 99200 | | |
| 2026-01-30 13:00 | 102050 | | |
| 2026-01-30 12:00 | 105894 | | |
| 2026-01-30 11:00 | 112900 | | |
| 2026-01-30 10:00 | 124794 | | |
| 2026-01-30 09:00 | 139381 | | |
| 2026-01-30 08:00 | 150406 | | |
| 2026-01-30 07:00 | 152781 | | |
| 2026-01-30 06:00 | 145769 | | |
| 2026-01-30 05:00 | 134887 | | |
| 2026-01-30 04:00 | 127775 | | |
| 2026-01-30 03:00 | 125669 | | |
| 2026-01-30 02:00 | 126100 | | |
| 2026-01-30 01:00 | 128225 | | |
| 2026-01-30 00:00 | 132287 | | |
| 2026-01-29 23:00 | 138856 | | |
| 2026-01-29 22:00 | 146238 | | |
| 2026-01-29 21:00 | 151244 | | |
| 2026-01-29 20:00 | 153956 | | |
| 2026-01-29 19:00 | 155869 | | |
| 2026-01-29 18:00 | 154037 | | |
| 2026-01-29 17:00 | 142738 | | |
| 2026-01-29 16:00 | 124606 | | |
| 2026-01-29 15:00 | 110875 | | |
| 2026-01-29 14:00 | 105763 | | |
| 2026-01-29 13:00 | 105162 | | |
| 2026-01-29 12:00 | 106981 | | |
| 2026-01-29 11:00 | 112763 | | |
| 2026-01-29 10:00 | 124487 | | |
| 2026-01-29 09:00 | 138338 | | |
| 2026-01-29 08:00 | 145794 | | |
| 2026-01-29 07:00 | 143812 | | |
| 2026-01-29 06:00 | 135238 | | |
| 2026-01-29 05:00 | 124706 | | |
| 2026-01-29 04:00 | 117312 | | |
| 2026-01-29 03:00 | 115013 | | |
| 2026-01-29 02:00 | 116763 | | |
| 2026-01-29 01:00 | 120881 | | |
| 2026-01-29 00:00 | 125438 | | |
| 2026-01-28 23:00 | 128950 | | |
| 2026-01-28 22:00 | 130894 | | |
| 2026-01-28 21:00 | 133169 | | |
| 2026-01-28 20:00 | 138713 | | |
| 2026-01-28 19:00 | 145762 | | |
| 2026-01-28 18:00 | 146669 | | |
| 2026-01-28 17:00 | 135019 | | |
| 2026-01-28 16:00 | 115769 | | |