COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2026-03-27 02:00 | 159369 | | |
| 2026-03-27 01:00 | 156319 | | |
| 2026-03-27 00:00 | 155744 | | |
| 2026-03-26 23:00 | 156681 | | |
| 2026-03-26 22:00 | 156338 | | |
| 2026-03-26 21:00 | 152194 | | |
| 2026-03-26 20:00 | 143400 | | |
| 2026-03-26 19:00 | 129431 | | |
| 2026-03-26 18:00 | 111688 | | |
| 2026-03-26 17:00 | 95919 | | |
| 2026-03-26 16:00 | 87925 | | |
| 2026-03-26 15:00 | 88713 | | |
| 2026-03-26 14:00 | 95969 | | |
| 2026-03-26 13:00 | 107331 | | |
| 2026-03-26 12:00 | 120525 | | |
| 2026-03-26 11:00 | 132069 | | |
| 2026-03-26 10:00 | 138281 | | |
| 2026-03-26 09:00 | 138488 | | |
| 2026-03-26 08:00 | 136881 | | |
| 2026-03-26 07:00 | 137875 | | |
| 2026-03-26 06:00 | 141037 | | |
| 2026-03-26 05:00 | 144319 | | |
| 2026-03-26 04:00 | 147294 | | |
| 2026-03-26 03:00 | 149925 | | |
| 2026-03-26 02:00 | 152194 | | |
| 2026-03-26 01:00 | 153794 | | |
| 2026-03-26 00:00 | 154056 | | |
| 2026-03-25 23:00 | 152756 | | |
| 2026-03-25 22:00 | 149631 | | |
| 2026-03-25 21:00 | 145056 | | |
| 2026-03-25 20:00 | 140631 | | |
| 2026-03-25 19:00 | 135675 | | |
| 2026-03-25 18:00 | 126125 | | |
| 2026-03-25 17:00 | 111400 | | |
| 2026-03-25 16:00 | 98381 | | |
| 2026-03-25 15:00 | 93475 | | |
| 2026-03-25 14:00 | 95237 | | |
| 2026-03-25 13:00 | 98781 | | |
| 2026-03-25 12:00 | 103444 | | |
| 2026-03-25 11:00 | 112031 | | |
| 2026-03-25 10:00 | 124644 | | |
| 2026-03-25 09:00 | 137950 | | |
| 2026-03-25 08:00 | 148031 | | |
| 2026-03-25 07:00 | 152131 | | |
| 2026-03-25 06:00 | 150194 | | |
| 2026-03-25 05:00 | 144213 | | |
| 2026-03-25 04:00 | 137581 | | |
| 2026-03-25 03:00 | 133606 | | |
| 2026-03-25 02:00 | 130613 | | |
| 2026-03-25 01:00 | 123881 | | |
| 2026-03-25 00:00 | 116144 | | |
| 2026-03-24 23:00 | 116119 | | |
| 2026-03-24 22:00 | 124425 | | |
| 2026-03-24 21:00 | 132631 | | |
| 2026-03-24 20:00 | 133494 | | |
| 2026-03-24 19:00 | 124537 | | |
| 2026-03-24 18:00 | 108719 | | |
| 2026-03-24 17:00 | 94294 | | |
| 2026-03-24 16:00 | 88013 | | |
| 2026-03-24 15:00 | 90175 | | |
| 2026-03-24 14:00 | 97281 | | |
| 2026-03-24 13:00 | 104794 | | |
| 2026-03-24 12:00 | 110269 | | |
| 2026-03-24 11:00 | 115019 | | |
| 2026-03-24 10:00 | 121513 | | |
| 2026-03-24 09:00 | 131156 | | |
| 2026-03-24 08:00 | 139569 | | |
| 2026-03-24 07:00 | 136963 | | |
| 2026-03-24 06:00 | 123062 | | |
| 2026-03-24 05:00 | 111312 | | |
| 2026-03-24 04:00 | 109956 | | |
| 2026-03-24 03:00 | 114188 | | |
| 2026-03-24 02:00 | 119500 | | |
| 2026-03-24 01:00 | 127506 | | |
| 2026-03-24 00:00 | 139269 | | |
| 2026-03-23 23:00 | 152106 | | |
| 2026-03-23 22:00 | 163744 | | |
| 2026-03-23 21:00 | 173319 | | |
| 2026-03-23 20:00 | 175650 | | |
| 2026-03-23 19:00 | 162881 | | |
| 2026-03-23 18:00 | 135975 | | |
| 2026-03-23 17:00 | 108681 | | |
| 2026-03-23 16:00 | 94375 | | |
| 2026-03-23 15:00 | 93356 | | |
| 2026-03-23 14:00 | 99562 | | |
| 2026-03-23 13:00 | 110838 | | |
| 2026-03-23 12:00 | 125919 | | |
| 2026-03-23 11:00 | 141113 | | |
| 2026-03-23 10:00 | 153919 | | |
| 2026-03-23 09:00 | 163631 | | |
| 2026-03-23 08:00 | 168537 | | |
| 2026-03-23 07:00 | 165475 | | |
| 2026-03-23 06:00 | 152456 | | |
| 2026-03-23 05:00 | 133762 | | |
| 2026-03-23 04:00 | 118406 | | |
| 2026-03-23 03:00 | 110244 | | |
| 2026-03-23 02:00 | 107213 | | |
| 2026-03-23 01:00 | 109150 | | |
| 2026-03-23 00:00 | 117869 | | |
| 2026-03-22 23:00 | 132213 | | |
| 2026-03-22 22:00 | 148531 | | |
| 2026-03-22 21:00 | 162456 | | |
| 2026-03-22 20:00 | 166512 | | |
| 2026-03-22 19:00 | 154450 | | |
| 2026-03-22 18:00 | 131294 | | |
| 2026-03-22 17:00 | 109787 | | |
| 2026-03-22 16:00 | 97644 | | |
| 2026-03-22 15:00 | 94812 | | |
| 2026-03-22 14:00 | 99581 | | |
| 2026-03-22 13:00 | 111531 | | |
| 2026-03-22 12:00 | 128537 | | |
| 2026-03-22 11:00 | 144156 | | |
| 2026-03-22 10:00 | 152338 | | |
| 2026-03-22 09:00 | 153919 | | |
| 2026-03-22 08:00 | 151225 | | |
| 2026-03-22 07:00 | 142050 | | |
| 2026-03-22 06:00 | 127256 | | |
| 2026-03-22 05:00 | 113200 | | |
| 2026-03-22 04:00 | 104263 | | |
| 2026-03-22 03:00 | 101062 | | |
| 2026-03-22 02:00 | 103581 | | |
| 2026-03-22 01:00 | 110938 | | |
| 2026-03-22 00:00 | 118519 | | |
| 2026-03-21 23:00 | 123275 | | |
| 2026-03-21 22:00 | 128425 | | |
| 2026-03-21 21:00 | 134656 | | |
| 2026-03-21 20:00 | 137225 | | |
| 2026-03-21 19:00 | 130787 | | |
| 2026-03-21 18:00 | 111631 | | |
| 2026-03-21 17:00 | 87319 | | |
| 2026-03-21 16:00 | 73750 | | |
| 2026-03-21 15:00 | 75088 | | |
| 2026-03-21 14:00 | 84031 | | |
| 2026-03-21 13:00 | 94213 | | |
| 2026-03-21 12:00 | 102606 | | |
| 2026-03-21 11:00 | 109588 | | |
| 2026-03-21 10:00 | 116938 | | |
| 2026-03-21 09:00 | 123050 | | |
| 2026-03-21 08:00 | 121588 | | |
| 2026-03-21 07:00 | 109819 | | |
| 2026-03-21 06:00 | 96763 | | |
| 2026-03-21 05:00 | 92506 | | |
| 2026-03-21 04:00 | 96112 | | |
| 2026-03-21 03:00 | 102612 | | |
| 2026-03-21 02:00 | 110938 | | |
| 2026-03-21 01:00 | 121525 | | |
| 2026-03-21 00:00 | 133669 | | |
| 2026-03-20 23:00 | 145044 | | |
| 2026-03-20 22:00 | 153425 | | |
| 2026-03-20 21:00 | 158600 | | |
| 2026-03-20 20:00 | 158287 | | |
| 2026-03-20 19:00 | 146906 | | |
| 2026-03-20 18:00 | 123588 | | |
| 2026-03-20 17:00 | 96819 | | |
| 2026-03-20 16:00 | 77919 | | |
| 2026-03-20 15:00 | 71269 | | |
| 2026-03-20 14:00 | 73287 | | |
| 2026-03-20 13:00 | 78931 | | |
| 2026-03-20 12:00 | 86306 | | |
| 2026-03-20 11:00 | 97869 | | |
| 2026-03-20 10:00 | 116606 | | |
| 2026-03-20 09:00 | 137869 | | |
| 2026-03-20 08:00 | 151400 | | |
| 2026-03-20 07:00 | 152412 | | |
| 2026-03-20 06:00 | 143113 | | |
| 2026-03-20 05:00 | 130194 | | |
| 2026-03-20 04:00 | 122312 | | |
| 2026-03-20 03:00 | 121094 | | |
| 2026-03-20 02:00 | 121406 | | |
| 2026-03-20 01:00 | 121294 | | |
| 2026-03-20 00:00 | 123931 | | |
| 2026-03-19 23:00 | 132306 | | |
| 2026-03-19 22:00 | 144600 | | |
| 2026-03-19 21:00 | 156019 | | |
| 2026-03-19 20:00 | 161475 | | |
| 2026-03-19 19:00 | 155794 | | |
| 2026-03-19 18:00 | 138650 | | |
| 2026-03-19 17:00 | 117025 | | |
| 2026-03-19 16:00 | 99525 | | |
| 2026-03-19 15:00 | 90769 | | |
| 2026-03-19 14:00 | 89681 | | |
| 2026-03-19 13:00 | 91831 | | |
| 2026-03-19 12:00 | 94812 | | |
| 2026-03-19 11:00 | 100531 | | |
| 2026-03-19 10:00 | 111400 | | |
| 2026-03-19 09:00 | 125237 | | |
| 2026-03-19 08:00 | 133069 | | |
| 2026-03-19 07:00 | 126025 | | |
| 2026-03-19 06:00 | 108162 | | |
| 2026-03-19 05:00 | 92662 | | |
| 2026-03-19 04:00 | 85275 | | |
| 2026-03-19 03:00 | 83706 | | |
| 2026-03-19 02:00 | 86300 | | |
| 2026-03-19 01:00 | 92562 | | |
| 2026-03-19 00:00 | 102394 | | |
| 2026-03-18 23:00 | 115987 | | |
| 2026-03-18 22:00 | 132069 | | |
| 2026-03-18 21:00 | 147081 | | |
| 2026-03-18 20:00 | 154525 | | |
| 2026-03-18 19:00 | 147250 | | |
| 2026-03-18 18:00 | 125331 | | |
| 2026-03-18 17:00 | 99638 | | |
| 2026-03-18 16:00 | 83025 | | |
| 2026-03-18 15:00 | 79806 | | |
| 2026-03-18 14:00 | 84150 | | |
| 2026-03-18 13:00 | 88319 | | |
| 2026-03-18 12:00 | 91213 | | |
| 2026-03-18 11:00 | 94787 | | |
| 2026-03-18 10:00 | 100562 | | |
| 2026-03-18 09:00 | 110938 | | |
| 2026-03-18 08:00 | 121500 | | |
| 2026-03-18 07:00 | 120319 | | |
| 2026-03-18 06:00 | 103950 | | |
| 2026-03-18 05:00 | 83875 | | |
| 2026-03-18 04:00 | 73362 | | |
| 2026-03-18 03:00 | 74519 | | |
| 2026-03-18 02:00 | 82019 | | |
| 2026-03-18 01:00 | 93112 | | |
| 2026-03-18 00:00 | 107675 | | |
| 2026-03-17 23:00 | 123831 | | |
| 2026-03-17 22:00 | 138431 | | |
| 2026-03-17 21:00 | 148713 | | |
| 2026-03-17 20:00 | 152175 | | |
| 2026-03-17 19:00 | 145781 | | |
| 2026-03-17 18:00 | 126819 | | |
| 2026-03-17 17:00 | 101025 | | |
| 2026-03-17 16:00 | 81319 | | |
| 2026-03-17 15:00 | 71638 | | |
| 2026-03-17 14:00 | 68269 | | |
| 2026-03-17 13:00 | 71656 | | |
| 2026-03-17 12:00 | 81494 | | |
| 2026-03-17 11:00 | 92075 | | |
| 2026-03-17 10:00 | 100312 | | |
| 2026-03-17 09:00 | 108031 | | |
| 2026-03-17 08:00 | 114112 | | |
| 2026-03-17 07:00 | 114300 | | |
| 2026-03-17 06:00 | 108519 | | |
| 2026-03-17 05:00 | 101162 | | |
| 2026-03-17 04:00 | 96325 | | |
| 2026-03-17 03:00 | 94769 | | |
| 2026-03-17 02:00 | 94625 | | |
| 2026-03-17 01:00 | 95100 | | |
| 2026-03-17 00:00 | 98050 | | |
| 2026-03-16 23:00 | 104737 | | |
| 2026-03-16 22:00 | 112812 | | |
| 2026-03-16 21:00 | 118950 | | |
| 2026-03-16 20:00 | 120125 | | |
| 2026-03-16 19:00 | 112850 | | |
| 2026-03-16 18:00 | 98200 | | |
| 2026-03-16 17:00 | 83925 | | |