COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PST) | Discharge |
| 2026-11-10 23:00 | 75469 | | |
| 2026-11-10 22:00 | 83275 | | |
| 2026-11-10 21:00 | 93181 | | |
| 2026-11-10 20:00 | 102338 | | |
| 2026-11-10 19:00 | 109769 | | |
| 2026-11-10 18:00 | 113944 | | |
| 2026-11-10 17:00 | 111419 | | |
| 2026-11-10 16:00 | 102388 | | |
| 2026-11-10 15:00 | 93431 | | |
| 2026-11-10 14:00 | 90000 | | |
| 2026-11-10 13:00 | 90656 | | |
| 2026-11-10 12:00 | 91812 | | |
| 2026-11-10 11:00 | 92287 | | |
| 2026-11-10 10:00 | 94069 | | |
| 2026-11-10 09:00 | 100325 | | |
| 2026-11-10 08:00 | 108425 | | |
| 2026-11-10 07:00 | 109600 | | |
| 2026-11-10 06:00 | 99819 | | |
| 2026-11-10 05:00 | 84856 | | |
| 2026-11-10 04:00 | 73400 | | |
| 2026-11-10 03:00 | 69438 | | |
| 2026-11-10 02:00 | 71819 | | |
| 2026-11-10 01:00 | 78381 | | |
| 2026-11-10 00:00 | 87744 | | |
| 2026-11-09 23:00 | 98106 | | |
| 2026-11-09 22:00 | 107287 | | |
| 2026-11-09 21:00 | 114456 | | |
| 2026-11-09 20:00 | 119894 | | |
| 2026-11-09 19:00 | 123625 | | |
| 2026-11-09 18:00 | 125581 | | |
| 2026-11-09 17:00 | 125406 | | |
| 2026-11-09 16:00 | 123394 | | |
| 2026-11-09 15:00 | 121725 | | |
| 2026-11-09 14:00 | 121062 | | |
| 2026-11-09 13:00 | 118838 | | |
| 2026-11-09 12:00 | 114269 | | |
| 2026-11-09 11:00 | 110325 | | |
| 2026-11-09 10:00 | 108756 | | |
| 2026-11-09 09:00 | 107356 | | |
| 2026-11-09 08:00 | 104225 | | |
| 2026-11-09 07:00 | 101112 | | |
| 2026-11-09 06:00 | 98600 | | |
| 2026-11-09 05:00 | 93306 | | |
| 2026-11-09 04:00 | 83469 | | |
| 2026-11-09 03:00 | 72450 | | |
| 2026-11-09 02:00 | 66419 | | |
| 2026-11-09 01:00 | 69175 | | |
| 2026-11-09 00:00 | 77956 | | |
| 2026-11-08 23:00 | 86669 | | |
| 2026-11-08 22:00 | 92625 | | |
| 2026-11-08 21:00 | 97244 | | |
| 2026-11-08 20:00 | 102256 | | |
| 2026-11-08 19:00 | 106494 | | |
| 2026-11-08 18:00 | 105856 | | |
| 2026-11-08 17:00 | 97975 | | |
| 2026-11-08 16:00 | 86425 | | |
| 2026-11-08 15:00 | 77794 | | |
| 2026-11-08 14:00 | 74938 | | |
| 2026-11-08 13:00 | 75681 | | |
| 2026-11-08 12:00 | 77244 | | |
| 2026-11-08 11:00 | 77650 | | |
| 2026-11-08 10:00 | 74381 | | |
| 2026-11-08 09:00 | 67575 | | |
| 2026-11-08 08:00 | 61337 | | |
| 2026-11-08 07:00 | 58000 | | |
| 2026-11-08 06:00 | 55381 | | |
| 2026-11-08 05:00 | 51106 | | |
| 2026-11-08 04:00 | 46875 | | |
| 2026-11-08 03:00 | 46337 | | |
| 2026-11-08 02:00 | 50425 | | |
| 2026-11-08 01:00 | 57825 | | |
| 2026-11-08 00:00 | 66794 | | |
| 2026-11-07 23:00 | 75181 | | |
| 2026-11-07 22:00 | 82650 | | |
| 2026-11-07 21:00 | 90638 | | |
| 2026-11-07 20:00 | 99219 | | |
| 2026-11-07 19:00 | 107025 | | |
| 2026-11-07 18:00 | 110731 | | |
| 2026-11-07 17:00 | 106162 | | |
| 2026-11-07 16:00 | 95112 | | |
| 2026-11-07 15:00 | 85394 | | |
| 2026-11-07 14:00 | 82100 | | |
| 2026-11-07 13:00 | 83844 | | |
| 2026-11-07 12:00 | 86294 | | |
| 2026-11-07 11:00 | 86931 | | |
| 2026-11-07 10:00 | 85981 | | |
| 2026-11-07 09:00 | 84194 | | |
| 2026-11-07 08:00 | 81575 | | |
| 2026-11-07 07:00 | 77481 | | |
| 2026-11-07 06:00 | 72438 | | |
| 2026-11-07 05:00 | 67938 | | |
| 2026-11-07 04:00 | 64319 | | |
| 2026-11-07 03:00 | 62425 | | |
| 2026-11-07 02:00 | 63587 | | |
| 2026-11-07 01:00 | 66431 | | |
| 2026-11-07 00:00 | 68681 | | |
| 2026-11-06 23:00 | 71506 | | |
| 2026-11-06 22:00 | 77875 | | |
| 2026-11-06 21:00 | 87700 | | |
| 2026-11-06 20:00 | 97500 | | |
| 2026-11-06 19:00 | 102869 | | |
| 2026-11-06 18:00 | 102175 | | |
| 2026-11-06 17:00 | 97206 | | |
| 2026-11-06 16:00 | 89606 | | |
| 2026-11-06 15:00 | 83031 | | |
| 2026-11-06 14:00 | 82406 | | |
| 2026-11-06 13:00 | 86631 | | |
| 2026-11-06 12:00 | 91425 | | |
| 2026-11-06 11:00 | 95294 | | |
| 2026-11-06 10:00 | 96963 | | |
| 2026-11-06 09:00 | 96231 | | |
| 2026-11-06 08:00 | 96062 | | |
| 2026-11-06 07:00 | 95688 | | |
| 2026-11-06 06:00 | 91031 | | |
| 2026-11-06 05:00 | 83656 | | |
| 2026-11-06 04:00 | 78219 | | |
| 2026-11-06 03:00 | 75894 | | |
| 2026-11-06 02:00 | 76575 | | |
| 2026-11-06 01:00 | 81513 | | |
| 2026-11-06 00:00 | 91188 | | |
| 2026-11-05 23:00 | 103325 | | |
| 2026-11-05 22:00 | 114706 | | |
| 2026-11-05 21:00 | 123569 | | |
| 2026-11-05 20:00 | 128750 | | |
| 2026-11-05 19:00 | 129662 | | |
| 2026-11-05 18:00 | 125044 | | |
| 2026-11-05 17:00 | 111381 | | |
| 2026-11-05 16:00 | 90944 | | |
| 2026-11-05 15:00 | 74175 | | |
| 2026-11-05 14:00 | 66569 | | |
| 2026-11-05 13:00 | 64731 | | |
| 2026-11-05 12:00 | 65275 | | |
| 2026-11-05 11:00 | 68213 | | |
| 2026-11-05 10:00 | 74525 | | |
| 2026-11-05 09:00 | 82594 | | |
| 2026-11-05 08:00 | 87375 | | |
| 2026-11-05 07:00 | 85719 | | |
| 2026-11-05 06:00 | 80419 | | |
| 2026-11-05 05:00 | 77600 | | |
| 2026-11-05 04:00 | 79881 | | |
| 2026-11-05 03:00 | 84737 | | |
| 2026-11-05 02:00 | 89419 | | |
| 2026-11-05 01:00 | 91713 | | |
| 2026-11-05 00:00 | 92144 | | |
| 2026-11-04 23:00 | 95056 | | |
| 2026-11-04 22:00 | 101919 | | |
| 2026-11-04 21:00 | 111569 | | |
| 2026-11-04 20:00 | 123231 | | |
| 2026-11-04 19:00 | 133019 | | |
| 2026-11-04 18:00 | 134319 | | |
| 2026-11-04 17:00 | 124325 | | |
| 2026-11-04 16:00 | 107356 | | |
| 2026-11-04 15:00 | 92019 | | |
| 2026-11-04 14:00 | 85269 | | |
| 2026-11-04 13:00 | 86688 | | |
| 2026-11-04 12:00 | 91731 | | |
| 2026-11-04 11:00 | 99794 | | |
| 2026-11-04 10:00 | 111513 | | |
| 2026-11-04 09:00 | 123306 | | |
| 2026-11-04 08:00 | 129000 | | |
| 2026-11-04 07:00 | 122300 | | |
| 2026-11-04 06:00 | 101994 | | |
| 2026-11-04 05:00 | 76569 | | |
| 2026-11-04 04:00 | 57819 | | |
| 2026-11-04 03:00 | 50862 | | |
| 2026-11-04 02:00 | 52513 | | |
| 2026-11-04 01:00 | 56625 | | |
| 2026-11-04 00:00 | 61206 | | |
| 2026-11-03 23:00 | 68812 | | |
| 2026-11-03 22:00 | 79237 | | |
| 2026-11-03 21:00 | 88706 | | |
| 2026-11-03 20:00 | 95306 | | |
| 2026-11-03 19:00 | 99400 | | |
| 2026-11-03 18:00 | 100094 | | |
| 2026-11-03 17:00 | 95025 | | |
| 2026-11-03 16:00 | 85450 | | |
| 2026-11-03 15:00 | 77725 | | |
| 2026-11-03 14:00 | 76062 | | |
| 2026-11-03 13:00 | 79875 | | |
| 2026-11-03 12:00 | 87050 | | |
| 2026-11-03 11:00 | 93000 | | |
| 2026-11-03 10:00 | 94987 | | |
| 2026-11-03 09:00 | 96050 | | |
| 2026-11-03 08:00 | 96338 | | |
| 2026-11-03 07:00 | 89981 | | |
| 2026-11-03 06:00 | 74200 | | |
| 2026-11-03 05:00 | 55000 | | |
| 2026-11-03 04:00 | 41600 | | |
| 2026-11-03 03:00 | 36850 | | |
| 2026-11-03 02:00 | 36794 | | |
| 2026-11-03 01:00 | 37194 | | |
| 2026-11-03 00:00 | 37725 | | |
| 2026-11-02 23:00 | 41425 | | |
| 2026-11-02 22:00 | 48962 | | |
| 2026-11-02 21:00 | 57663 | | |
| 2026-11-02 20:00 | 65956 | | |
| 2026-11-02 19:00 | 72219 | | |
| 2026-11-02 18:00 | 73938 | | |
| 2026-11-02 17:00 | 70200 | | |
| 2026-11-02 16:00 | 62538 | | |
| 2026-11-02 15:00 | 55019 | | |
| 2026-11-02 14:00 | 52075 | | |
| 2026-11-02 13:00 | 55619 | | |
| 2026-11-02 12:00 | 64369 | | |
| 2026-11-02 11:00 | 74737 | | |
| 2026-11-02 10:00 | 83556 | | |
| 2026-11-02 09:00 | 88575 | | |
| 2026-11-02 08:00 | 86481 | | |
| 2026-11-02 07:00 | 76438 | | |
| 2026-11-02 06:00 | 62875 | | |
| 2026-11-02 05:00 | 50013 | | |
| 2026-11-02 04:00 | 39556 | | |
| 2026-11-02 03:00 | 32800 | | |
| 2026-11-02 02:00 | 29881 | | |
| 2026-11-02 01:00 | 30269 | | |
| 2026-11-02 00:00 | 34375 | | |
| 2026-11-01 23:00 | 42094 | | |
| 2026-11-01 22:00 | 51769 | | |
| 2026-11-01 21:00 | 61856 | | |
| 2026-11-01 20:00 | 71419 | | |
| 2026-11-01 19:00 | 79188 | | |
| 2026-11-01 18:00 | 82631 | | |
| 2026-11-01 17:00 | 77625 | | |
| 2026-11-01 16:00 | 63394 | | |
| 2026-11-01 15:00 | 48131 | | |
| 2026-11-01 14:00 | 41825 | | |
| 2026-11-01 13:00 | 44688 | | |
| 2026-11-01 12:00 | 50431 | | |
| 2026-11-01 11:00 | 55987 | | |
| 2026-11-01 10:00 | 61344 | | |
| 2026-11-01 09:00 | 65487 | | |
| 2026-11-01 08:00 | 65987 | | |
| 2026-11-01 07:00 | 61169 | | |
| 2026-11-01 06:00 | 53038 | | |
| 2026-11-01 05:00 | 45531 | | |
| 2026-11-01 04:00 | 40688 | | |
| 2026-11-01 03:00 | 39025 | | |
| 2026-11-01 02:00 | 40456 | | |
| 2026-11-01 01:00 | 43269 | | |
| 2026-11-01 01:00 | 44844 | | |
| 2026-11-01 00:00 | 45188 | | |
| 2026-10-31 23:00 | 46481 | | |
| 2026-10-31 22:00 | 49094 | | |
| 2026-10-31 21:00 | 52406 | | |
| 2026-10-31 20:00 | 55644 | | |
| 2026-10-31 19:00 | 56944 | | |
| 2026-10-31 18:00 | 56481 | | |
| 2026-10-31 16:00 | 56500 | | |