COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2026-10-23 22:00 | 41294 | | |
| 2026-10-23 21:00 | 41331 | | |
| 2026-10-23 20:00 | 41281 | | |
| 2026-10-23 19:00 | 40712 | | |
| 2026-10-23 18:00 | 40069 | | |
| 2026-10-23 17:00 | 39781 | | |
| 2026-10-23 16:00 | 40163 | | |
| 2026-10-23 15:00 | 40819 | | |
| 2026-10-23 14:00 | 41206 | | |
| 2026-10-23 13:00 | 41994 | | |
| 2026-10-23 12:00 | 44100 | | |
| 2026-10-23 11:00 | 47312 | | |
| 2026-10-23 10:00 | 50569 | | |
| 2026-10-23 09:00 | 52138 | | |
| 2026-10-23 08:00 | 50256 | | |
| 2026-10-23 07:00 | 45319 | | |
| 2026-10-23 06:00 | 39400 | | |
| 2026-10-23 05:00 | 34006 | | |
| 2026-10-23 04:00 | 30275 | | |
| 2026-10-23 03:00 | 29181 | | |
| 2026-10-23 02:00 | 30625 | | |
| 2026-10-23 01:00 | 32806 | | |
| 2026-10-23 00:00 | 34281 | | |
| 2026-10-22 23:00 | 35688 | | |
| 2026-10-22 22:00 | 36800 | | |
| 2026-10-22 21:00 | 37388 | | |
| 2026-10-22 20:00 | 39881 | | |
| 2026-10-22 19:00 | 44812 | | |
| 2026-10-22 18:00 | 49562 | | |
| 2026-10-22 17:00 | 52556 | | |
| 2026-10-22 16:00 | 54081 | | |
| 2026-10-22 15:00 | 55456 | | |
| 2026-10-22 14:00 | 57712 | | |
| 2026-10-22 13:00 | 61688 | | |
| 2026-10-22 12:00 | 67900 | | |
| 2026-10-22 11:00 | 73688 | | |
| 2026-10-22 10:00 | 76062 | | |
| 2026-10-22 09:00 | 74950 | | |
| 2026-10-22 08:00 | 69756 | | |
| 2026-10-22 07:00 | 61200 | | |
| 2026-10-22 06:00 | 52875 | | |
| 2026-10-22 05:00 | 46462 | | |
| 2026-10-22 04:00 | 42256 | | |
| 2026-10-22 03:00 | 40763 | | |
| 2026-10-22 02:00 | 41200 | | |
| 2026-10-22 01:00 | 41712 | | |
| 2026-10-22 00:00 | 41225 | | |
| 2026-10-21 23:00 | 40750 | | |
| 2026-10-21 22:00 | 41481 | | |
| 2026-10-21 21:00 | 43594 | | |
| 2026-10-21 20:00 | 46587 | | |
| 2026-10-21 19:00 | 48675 | | |
| 2026-10-21 18:00 | 49394 | | |
| 2026-10-21 17:00 | 50181 | | |
| 2026-10-21 16:00 | 50606 | | |
| 2026-10-21 15:00 | 49800 | | |
| 2026-10-21 14:00 | 48944 | | |
| 2026-10-21 13:00 | 49644 | | |
| 2026-10-21 12:00 | 52381 | | |
| 2026-10-21 11:00 | 56569 | | |
| 2026-10-21 10:00 | 61681 | | |
| 2026-10-21 09:00 | 66088 | | |
| 2026-10-21 08:00 | 66388 | | |
| 2026-10-21 07:00 | 62606 | | |
| 2026-10-21 06:00 | 58612 | | |
| 2026-10-21 05:00 | 55737 | | |
| 2026-10-21 04:00 | 53562 | | |
| 2026-10-21 03:00 | 52938 | | |
| 2026-10-21 02:00 | 54056 | | |
| 2026-10-21 01:00 | 55600 | | |
| 2026-10-21 00:00 | 55938 | | |
| 2026-10-20 23:00 | 55275 | | |
| 2026-10-20 22:00 | 55150 | | |
| 2026-10-20 21:00 | 55850 | | |
| 2026-10-20 20:00 | 58119 | | |
| 2026-10-20 19:00 | 62081 | | |
| 2026-10-20 18:00 | 63288 | | |
| 2026-10-20 17:00 | 59025 | | |
| 2026-10-20 16:00 | 53631 | | |
| 2026-10-20 15:00 | 51062 | | |
| 2026-10-20 14:00 | 50513 | | |
| 2026-10-20 13:00 | 50700 | | |
| 2026-10-20 12:00 | 52581 | | |
| 2026-10-20 11:00 | 57138 | | |
| 2026-10-20 10:00 | 63112 | | |
| 2026-10-20 09:00 | 67013 | | |
| 2026-10-20 08:00 | 64950 | | |
| 2026-10-20 07:00 | 58444 | | |
| 2026-10-20 06:00 | 52681 | | |
| 2026-10-20 05:00 | 48306 | | |
| 2026-10-20 04:00 | 44194 | | |
| 2026-10-20 03:00 | 41506 | | |
| 2026-10-20 02:00 | 41531 | | |
| 2026-10-20 01:00 | 44319 | | |
| 2026-10-20 00:00 | 47969 | | |
| 2026-10-19 23:00 | 50075 | | |
| 2026-10-19 22:00 | 51975 | | |
| 2026-10-19 21:00 | 57906 | | |
| 2026-10-19 20:00 | 66406 | | |
| 2026-10-19 19:00 | 69325 | | |
| 2026-10-19 18:00 | 62587 | | |
| 2026-10-19 17:00 | 51125 | | |
| 2026-10-19 16:00 | 42156 | | |
| 2026-10-19 15:00 | 38612 | | |
| 2026-10-19 14:00 | 39544 | | |
| 2026-10-19 13:00 | 42719 | | |
| 2026-10-19 12:00 | 46819 | | |
| 2026-10-19 11:00 | 52681 | | |
| 2026-10-19 10:00 | 60831 | | |
| 2026-10-19 09:00 | 67175 | | |
| 2026-10-19 08:00 | 65725 | | |
| 2026-10-19 07:00 | 58106 | | |
| 2026-10-19 06:00 | 51013 | | |
| 2026-10-19 05:00 | 45956 | | |
| 2026-10-19 04:00 | 41925 | | |
| 2026-10-19 03:00 | 39931 | | |
| 2026-10-19 02:00 | 40844 | | |
| 2026-10-19 01:00 | 44212 | | |
| 2026-10-19 00:00 | 48300 | | |
| 2026-10-18 23:00 | 51919 | | |
| 2026-10-18 22:00 | 55550 | | |
| 2026-10-18 21:00 | 58513 | | |
| 2026-10-18 20:00 | 58900 | | |
| 2026-10-18 19:00 | 57244 | | |
| 2026-10-18 18:00 | 54981 | | |
| 2026-10-18 17:00 | 51725 | | |
| 2026-10-18 16:00 | 47831 | | |
| 2026-10-18 15:00 | 44562 | | |
| 2026-10-18 14:00 | 42356 | | |
| 2026-10-18 13:00 | 42156 | | |
| 2026-10-18 12:00 | 44869 | | |
| 2026-10-18 11:00 | 49394 | | |
| 2026-10-18 10:00 | 53881 | | |
| 2026-10-18 09:00 | 56888 | | |
| 2026-10-18 08:00 | 56544 | | |
| 2026-10-18 07:00 | 52794 | | |
| 2026-10-18 06:00 | 48281 | | |
| 2026-10-18 05:00 | 44225 | | |
| 2026-10-18 04:00 | 40500 | | |
| 2026-10-18 03:00 | 38094 | | |
| 2026-10-18 02:00 | 37862 | | |
| 2026-10-18 01:00 | 39819 | | |
| 2026-10-18 00:00 | 43200 | | |
| 2026-10-17 23:00 | 46294 | | |
| 2026-10-17 22:00 | 48725 | | |
| 2026-10-17 21:00 | 52044 | | |
| 2026-10-17 20:00 | 55919 | | |
| 2026-10-17 19:00 | 57619 | | |
| 2026-10-17 18:00 | 55188 | | |
| 2026-10-17 17:00 | 49038 | | |
| 2026-10-17 16:00 | 42281 | | |
| 2026-10-17 15:00 | 38044 | | |
| 2026-10-17 14:00 | 36438 | | |
| 2026-10-17 13:00 | 36456 | | |
| 2026-10-17 12:00 | 37244 | | |
| 2026-10-17 11:00 | 37656 | | |
| 2026-10-17 10:00 | 38356 | | |
| 2026-10-17 09:00 | 40325 | | |
| 2026-10-17 08:00 | 41263 | | |
| 2026-10-17 07:00 | 39619 | | |
| 2026-10-17 06:00 | 37669 | | |
| 2026-10-17 05:00 | 37056 | | |
| 2026-10-17 04:00 | 37600 | | |
| 2026-10-17 03:00 | 39244 | | |
| 2026-10-17 02:00 | 41494 | | |
| 2026-10-17 01:00 | 43794 | | |
| 2026-10-17 00:00 | 46150 | | |
| 2026-10-16 23:00 | 47812 | | |
| 2026-10-16 22:00 | 48056 | | |
| 2026-10-16 21:00 | 47681 | | |
| 2026-10-16 20:00 | 47938 | | |
| 2026-10-16 19:00 | 49581 | | |
| 2026-10-16 18:00 | 51188 | | |
| 2026-10-16 17:00 | 50094 | | |
| 2026-10-16 16:00 | 47163 | | |
| 2026-10-16 15:00 | 45388 | | |
| 2026-10-16 14:00 | 45587 | | |
| 2026-10-16 13:00 | 47475 | | |
| 2026-10-16 12:00 | 51950 | | |
| 2026-10-16 11:00 | 59125 | | |
| 2026-10-16 10:00 | 65088 | | |
| 2026-10-16 09:00 | 65231 | | |
| 2026-10-16 08:00 | 59381 | | |
| 2026-10-16 07:00 | 50894 | | |
| 2026-10-16 06:00 | 43600 | | |
| 2026-10-16 05:00 | 39331 | | |
| 2026-10-16 04:00 | 37569 | | |
| 2026-10-16 03:00 | 37888 | | |
| 2026-10-16 02:00 | 40081 | | |
| 2026-10-16 01:00 | 42962 | | |
| 2026-10-16 00:00 | 45175 | | |
| 2026-10-15 23:00 | 45100 | | |
| 2026-10-15 22:00 | 42506 | | |
| 2026-10-15 21:00 | 41119 | | |
| 2026-10-15 20:00 | 44688 | | |
| 2026-10-15 19:00 | 51013 | | |
| 2026-10-15 18:00 | 54413 | | |
| 2026-10-15 17:00 | 53631 | | |
| 2026-10-15 16:00 | 51650 | | |
| 2026-10-15 15:00 | 49806 | | |
| 2026-10-15 14:00 | 48119 | | |
| 2026-10-15 13:00 | 48300 | | |
| 2026-10-15 12:00 | 51513 | | |
| 2026-10-15 11:00 | 55869 | | |
| 2026-10-15 10:00 | 60069 | | |
| 2026-10-15 09:00 | 63962 | | |
| 2026-10-15 08:00 | 64325 | | |
| 2026-10-15 07:00 | 59731 | | |
| 2026-10-15 06:00 | 54650 | | |
| 2026-10-15 05:00 | 51862 | | |
| 2026-10-15 04:00 | 50562 | | |
| 2026-10-15 03:00 | 50994 | | |
| 2026-10-15 02:00 | 52788 | | |
| 2026-10-15 01:00 | 52712 | | |
| 2026-10-15 00:00 | 49406 | | |
| 2026-10-14 23:00 | 46212 | | |
| 2026-10-14 22:00 | 46319 | | |
| 2026-10-14 21:00 | 50337 | | |
| 2026-10-14 20:00 | 56681 | | |
| 2026-10-14 19:00 | 60481 | | |
| 2026-10-14 18:00 | 57688 | | |
| 2026-10-14 17:00 | 50531 | | |
| 2026-10-14 16:00 | 44669 | | |
| 2026-10-14 15:00 | 42844 | | |
| 2026-10-14 14:00 | 43138 | | |
| 2026-10-14 13:00 | 42575 | | |
| 2026-10-14 12:00 | 41719 | | |
| 2026-10-14 11:00 | 42969 | | |
| 2026-10-14 10:00 | 46269 | | |
| 2026-10-14 09:00 | 50050 | | |
| 2026-10-14 08:00 | 51862 | | |
| 2026-10-14 07:00 | 49938 | | |
| 2026-10-14 06:00 | 46469 | | |
| 2026-10-14 05:00 | 43881 | | |
| 2026-10-14 04:00 | 42119 | | |
| 2026-10-14 03:00 | 41538 | | |
| 2026-10-14 02:00 | 43056 | | |
| 2026-10-14 01:00 | 46006 | | |
| 2026-10-14 00:00 | 48606 | | |
| 2026-10-13 23:00 | 50825 | | |
| 2026-10-13 22:00 | 54556 | | |
| 2026-10-13 21:00 | 60550 | | |
| 2026-10-13 20:00 | 66744 | | |
| 2026-10-13 19:00 | 69369 | | |
| 2026-10-13 18:00 | 65331 | | |
| 2026-10-13 17:00 | 56362 | | |