COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2026-09-05 16:00 | 43425 | | |
| 2026-09-05 15:00 | 39981 | | |
| 2026-09-05 14:00 | 39375 | | |
| 2026-09-05 13:00 | 40625 | | |
| 2026-09-05 12:00 | 42413 | | |
| 2026-09-05 11:00 | 44094 | | |
| 2026-09-05 10:00 | 46156 | | |
| 2026-09-05 09:00 | 49481 | | |
| 2026-09-05 08:00 | 53425 | | |
| 2026-09-05 07:00 | 54138 | | |
| 2026-09-05 06:00 | 49600 | | |
| 2026-09-05 05:00 | 44212 | | |
| 2026-09-05 04:00 | 42513 | | |
| 2026-09-05 03:00 | 44350 | | |
| 2026-09-05 02:00 | 48134 | | |
| 2026-09-05 01:00 | 52219 | | |
| 2026-09-05 00:00 | 54481 | | |
| 2026-09-04 23:00 | 54487 | | |
| 2026-09-04 22:00 | 55647 | | |
| 2026-09-04 21:00 | 61556 | | |
| 2026-09-04 20:00 | 69656 | | |
| 2026-09-04 19:00 | 73919 | | |
| 2026-09-04 18:00 | 72531 | | |
| 2026-09-04 17:00 | 68125 | | |
| 2026-09-04 16:00 | 62294 | | |
| 2026-09-04 15:00 | 55775 | | |
| 2026-09-04 14:00 | 51606 | | |
| 2026-09-04 13:00 | 50812 | | |
| 2026-09-04 12:00 | 50944 | | |
| 2026-09-04 11:00 | 51131 | | |
| 2026-09-04 10:00 | 52388 | | |
| 2026-09-04 09:00 | 54831 | | |
| 2026-09-04 08:00 | 55800 | | |
| 2026-09-04 07:00 | 51362 | | |
| 2026-09-04 06:00 | 41875 | | |
| 2026-09-04 05:00 | 32619 | | |
| 2026-09-04 04:00 | 28006 | | |
| 2026-09-04 03:00 | 28594 | | |
| 2026-09-04 02:00 | 32594 | | |
| 2026-09-04 01:00 | 37719 | | |
| 2026-09-04 00:00 | 42844 | | |
| 2026-09-03 23:00 | 48712 | | |
| 2026-09-03 22:00 | 56056 | | |
| 2026-09-03 21:00 | 63631 | | |
| 2026-09-03 20:00 | 68588 | | |
| 2026-09-03 19:00 | 68056 | | |
| 2026-09-03 18:00 | 61638 | | |
| 2026-09-03 17:00 | 52987 | | |
| 2026-09-03 16:00 | 46475 | | |
| 2026-09-03 15:00 | 43106 | | |
| 2026-09-03 14:00 | 42331 | | |
| 2026-09-03 13:00 | 44038 | | |
| 2026-09-03 12:00 | 47044 | | |
| 2026-09-03 11:00 | 50850 | | |
| 2026-09-03 10:00 | 57062 | | |
| 2026-09-03 09:00 | 64469 | | |
| 2026-09-03 08:00 | 67513 | | |
| 2026-09-03 07:00 | 62288 | | |
| 2026-09-03 06:00 | 50800 | | |
| 2026-09-03 05:00 | 39175 | | |
| 2026-09-03 04:00 | 32875 | | |
| 2026-09-03 03:00 | 33231 | | |
| 2026-09-03 02:00 | 37337 | | |
| 2026-09-03 01:00 | 42125 | | |
| 2026-09-03 00:00 | 48100 | | |
| 2026-09-02 23:00 | 55538 | | |
| 2026-09-02 22:00 | 61706 | | |
| 2026-09-02 21:00 | 65694 | | |
| 2026-09-02 20:00 | 68631 | | |
| 2026-09-02 19:00 | 70606 | | |
| 2026-09-02 18:00 | 72550 | | |
| 2026-09-02 17:00 | 75200 | | |
| 2026-09-02 16:00 | 76450 | | |
| 2026-09-02 15:00 | 75625 | | |
| 2026-09-02 14:00 | 76912 | | |
| 2026-09-02 13:00 | 81562 | | |
| 2026-09-02 12:00 | 82588 | | |
| 2026-09-02 11:00 | 76469 | | |
| 2026-09-02 10:00 | 69781 | | |
| 2026-09-02 09:00 | 68312 | | |
| 2026-09-02 08:00 | 69569 | | |
| 2026-09-02 07:00 | 68013 | | |
| 2026-09-02 06:00 | 62369 | | |
| 2026-09-02 05:00 | 55831 | | |
| 2026-09-02 04:00 | 52081 | | |
| 2026-09-02 03:00 | 52219 | | |
| 2026-09-02 02:00 | 54644 | | |
| 2026-09-02 01:00 | 57688 | | |
| 2026-09-02 00:00 | 61038 | | |
| 2026-09-01 23:00 | 65081 | | |
| 2026-09-01 22:00 | 69969 | | |
| 2026-09-01 21:00 | 75581 | | |
| 2026-09-01 20:00 | 82056 | | |
| 2026-09-01 19:00 | 87381 | | |
| 2026-09-01 18:00 | 85919 | | |
| 2026-09-01 17:00 | 76400 | | |
| 2026-09-01 16:00 | 66525 | | |
| 2026-09-01 15:00 | 61844 | | |
| 2026-09-01 14:00 | 60656 | | |
| 2026-09-01 13:00 | 62269 | | |
| 2026-09-01 12:00 | 67088 | | |
| 2026-09-01 11:00 | 72612 | | |
| 2026-09-01 10:00 | 76781 | | |
| 2026-09-01 09:00 | 79106 | | |
| 2026-09-01 08:00 | 78494 | | |
| 2026-09-01 07:00 | 74131 | | |
| 2026-09-01 06:00 | 68031 | | |
| 2026-09-01 05:00 | 64362 | | |
| 2026-09-01 04:00 | 65388 | | |
| 2026-09-01 03:00 | 71188 | | |
| 2026-09-01 02:00 | 81206 | | |
| 2026-09-01 01:00 | 93213 | | |
| 2026-09-01 00:00 | 105950 | | |
| 2026-08-31 23:00 | 119925 | | |
| 2026-08-31 22:00 | 131856 | | |
| 2026-08-31 21:00 | 138800 | | |
| 2026-08-31 20:00 | 143731 | | |
| 2026-08-31 19:00 | 146831 | | |
| 2026-08-31 18:00 | 144294 | | |
| 2026-08-31 17:00 | 138463 | | |
| 2026-08-31 16:00 | 135588 | | |
| 2026-08-31 15:00 | 135006 | | |
| 2026-08-31 14:00 | 129950 | | |
| 2026-08-31 13:00 | 117750 | | |
| 2026-08-31 12:00 | 103756 | | |
| 2026-08-31 11:00 | 94706 | | |
| 2026-08-31 10:00 | 89769 | | |
| 2026-08-31 09:00 | 84000 | | |
| 2026-08-31 08:00 | 76787 | | |
| 2026-08-31 07:00 | 67350 | | |
| 2026-08-31 06:00 | 54281 | | |
| 2026-08-31 05:00 | 43025 | | |
| 2026-08-31 04:00 | 39175 | | |
| 2026-08-31 03:00 | 41106 | | |
| 2026-08-31 02:00 | 45056 | | |
| 2026-08-31 01:00 | 48962 | | |
| 2026-08-31 00:00 | 53469 | | |
| 2026-08-30 23:00 | 61419 | | |
| 2026-08-30 22:00 | 72500 | | |
| 2026-08-30 21:00 | 81519 | | |
| 2026-08-30 20:00 | 85275 | | |
| 2026-08-30 19:00 | 85112 | | |
| 2026-08-30 18:00 | 81725 | | |
| 2026-08-30 17:00 | 74775 | | |
| 2026-08-30 16:00 | 66331 | | |
| 2026-08-30 15:00 | 59719 | | |
| 2026-08-30 14:00 | 56344 | | |
| 2026-08-30 13:00 | 54875 | | |
| 2026-08-30 12:00 | 53319 | | |
| 2026-08-30 11:00 | 50756 | | |
| 2026-08-30 10:00 | 46775 | | |
| 2026-08-30 09:00 | 42913 | | |
| 2026-08-30 08:00 | 42925 | | |
| 2026-08-30 07:00 | 46769 | | |
| 2026-08-30 06:00 | 49562 | | |
| 2026-08-30 05:00 | 49019 | | |
| 2026-08-30 04:00 | 47763 | | |
| 2026-08-30 03:00 | 49069 | | |
| 2026-08-30 02:00 | 53156 | | |
| 2026-08-30 01:00 | 57969 | | |
| 2026-08-30 00:00 | 64200 | | |
| 2026-08-29 23:00 | 73900 | | |
| 2026-08-29 22:00 | 84119 | | |
| 2026-08-29 21:00 | 90912 | | |
| 2026-08-29 20:00 | 94706 | | |
| 2026-08-29 19:00 | 95888 | | |
| 2026-08-29 18:00 | 92619 | | |
| 2026-08-29 17:00 | 84100 | | |
| 2026-08-29 16:00 | 73588 | | |
| 2026-08-29 15:00 | 66119 | | |
| 2026-08-29 14:00 | 61919 | | |
| 2026-08-29 13:00 | 58131 | | |
| 2026-08-29 12:00 | 55125 | | |
| 2026-08-29 11:00 | 55375 | | |
| 2026-08-29 10:00 | 58763 | | |
| 2026-08-29 09:00 | 61388 | | |
| 2026-08-29 08:00 | 60669 | | |
| 2026-08-29 07:00 | 58544 | | |
| 2026-08-29 06:00 | 57119 | | |
| 2026-08-29 05:00 | 56356 | | |
| 2026-08-29 04:00 | 55962 | | |
| 2026-08-29 03:00 | 56587 | | |
| 2026-08-29 02:00 | 59038 | | |
| 2026-08-29 01:00 | 62163 | | |
| 2026-08-29 00:00 | 64044 | | |
| 2026-08-28 23:00 | 65475 | | |
| 2026-08-28 22:00 | 69244 | | |
| 2026-08-28 21:00 | 76588 | | |
| 2026-08-28 20:00 | 85619 | | |
| 2026-08-28 19:00 | 92600 | | |
| 2026-08-28 18:00 | 94819 | | |
| 2026-08-28 17:00 | 92463 | | |
| 2026-08-28 16:00 | 88119 | | |
| 2026-08-28 15:00 | 84487 | | |
| 2026-08-28 14:00 | 82350 | | |
| 2026-08-28 13:00 | 81444 | | |
| 2026-08-28 12:00 | 81419 | | |
| 2026-08-28 11:00 | 81044 | | |
| 2026-08-28 10:00 | 79250 | | |
| 2026-08-28 09:00 | 76019 | | |
| 2026-08-28 08:00 | 71600 | | |
| 2026-08-28 07:00 | 65925 | | |
| 2026-08-28 06:00 | 58425 | | |
| 2026-08-28 05:00 | 50306 | | |
| 2026-08-28 04:00 | 46231 | | |
| 2026-08-28 03:00 | 50131 | | |
| 2026-08-28 02:00 | 59269 | | |
| 2026-08-28 01:00 | 66794 | | |
| 2026-08-28 00:00 | 71894 | | |
| 2026-08-27 23:00 | 80031 | | |
| 2026-08-27 22:00 | 91494 | | |
| 2026-08-27 21:00 | 101600 | | |
| 2026-08-27 20:00 | 110250 | | |
| 2026-08-27 19:00 | 118412 | | |
| 2026-08-27 18:00 | 122650 | | |
| 2026-08-27 17:00 | 119700 | | |
| 2026-08-27 16:00 | 110806 | | |
| 2026-08-27 15:00 | 100250 | | |
| 2026-08-27 14:00 | 90625 | | |
| 2026-08-27 13:00 | 82644 | | |
| 2026-08-27 12:00 | 77831 | | |
| 2026-08-27 11:00 | 77475 | | |
| 2026-08-27 10:00 | 77844 | | |
| 2026-08-27 09:00 | 71756 | | |
| 2026-08-27 08:00 | 60419 | | |
| 2026-08-27 07:00 | 51144 | | |
| 2026-08-27 06:00 | 45031 | | |
| 2026-08-27 05:00 | 41612 | | |
| 2026-08-27 04:00 | 42775 | | |
| 2026-08-27 03:00 | 47150 | | |
| 2026-08-27 02:00 | 54000 | | |
| 2026-08-27 01:00 | 66237 | | |
| 2026-08-27 00:00 | 83912 | | |
| 2026-08-26 23:00 | 103763 | | |
| 2026-08-26 22:00 | 123056 | | |
| 2026-08-26 21:00 | 140369 | | |
| 2026-08-26 20:00 | 156238 | | |
| 2026-08-26 19:00 | 167912 | | |
| 2026-08-26 18:00 | 166356 | | |
| 2026-08-26 17:00 | 148856 | | |
| 2026-08-26 16:00 | 125319 | | |
| 2026-08-26 15:00 | 104169 | | |
| 2026-08-26 14:00 | 85875 | | |
| 2026-08-26 13:00 | 72088 | | |
| 2026-08-26 12:00 | 64612 | | |
| 2026-08-26 11:00 | 60981 | | |
| 2026-08-26 10:00 | 60288 | | |
| 2026-08-26 09:00 | 62675 | | |
| 2026-08-26 08:00 | 65213 | | |
| 2026-08-26 07:00 | 64756 | | |
| 2026-08-26 06:00 | 60931 | | |
| 2026-08-26 05:00 | 56869 | | |
| 2026-08-26 04:00 | 56306 | | |
| 2026-08-26 03:00 | 60112 | | |
| 2026-08-26 02:00 | 67769 | | |
| 2026-08-26 01:00 | 78838 | | |
| 2026-08-26 00:00 | 92106 | | |
| 2026-08-25 23:00 | 106844 | | |
| 2026-08-25 22:00 | 124919 | | |
| 2026-08-25 21:00 | 146531 | | |
| 2026-08-25 20:00 | 165625 | | |
| 2026-08-25 19:00 | 175900 | | |
| 2026-08-25 18:00 | 175125 | | |
| 2026-08-25 17:00 | 163219 | | |