COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2026-10-27 07:00 | 68219 | | |
| 2026-10-27 06:00 | 61819 | | |
| 2026-10-27 05:00 | 49225 | | |
| 2026-10-27 04:00 | 36675 | | |
| 2026-10-27 03:00 | 30669 | | |
| 2026-10-27 02:00 | 29806 | | |
| 2026-10-27 01:00 | 30694 | | |
| 2026-10-27 00:00 | 32888 | | |
| 2026-10-26 23:00 | 36275 | | |
| 2026-10-26 22:00 | 40456 | | |
| 2026-10-26 21:00 | 45419 | | |
| 2026-10-26 20:00 | 49769 | | |
| 2026-10-26 19:00 | 49837 | | |
| 2026-10-26 18:00 | 43869 | | |
| 2026-10-26 17:00 | 36106 | | |
| 2026-10-26 16:00 | 32431 | | |
| 2026-10-26 15:00 | 33881 | | |
| 2026-10-26 14:00 | 37431 | | |
| 2026-10-26 13:00 | 40356 | | |
| 2026-10-26 12:00 | 43175 | | |
| 2026-10-26 11:00 | 47969 | | |
| 2026-10-26 10:00 | 55038 | | |
| 2026-10-26 09:00 | 62906 | | |
| 2026-10-26 08:00 | 66419 | | |
| 2026-10-26 07:00 | 59562 | | |
| 2026-10-26 06:00 | 45544 | | |
| 2026-10-26 05:00 | 34175 | | |
| 2026-10-26 04:00 | 29988 | | |
| 2026-10-26 03:00 | 30575 | | |
| 2026-10-26 02:00 | 32394 | | |
| 2026-10-26 01:00 | 33725 | | |
| 2026-10-26 00:00 | 34544 | | |
| 2026-10-25 23:00 | 35775 | | |
| 2026-10-25 22:00 | 38737 | | |
| 2026-10-25 21:00 | 44700 | | |
| 2026-10-25 20:00 | 52050 | | |
| 2026-10-25 19:00 | 55763 | | |
| 2026-10-25 18:00 | 53269 | | |
| 2026-10-25 17:00 | 47350 | | |
| 2026-10-25 16:00 | 43125 | | |
| 2026-10-25 15:00 | 43844 | | |
| 2026-10-25 14:00 | 47994 | | |
| 2026-10-25 13:00 | 52212 | | |
| 2026-10-25 12:00 | 55081 | | |
| 2026-10-25 11:00 | 55969 | | |
| 2026-10-25 10:00 | 54519 | | |
| 2026-10-25 09:00 | 50881 | | |
| 2026-10-25 08:00 | 45150 | | |
| 2026-10-25 07:00 | 38950 | | |
| 2026-10-25 06:00 | 35056 | | |
| 2026-10-25 05:00 | 33931 | | |
| 2026-10-25 04:00 | 34025 | | |
| 2026-10-25 03:00 | 34506 | | |
| 2026-10-25 02:00 | 35538 | | |
| 2026-10-25 01:00 | 36812 | | |
| 2026-10-25 00:00 | 37013 | | |
| 2026-10-24 23:00 | 36000 | | |
| 2026-10-24 22:00 | 36600 | | |
| 2026-10-24 21:00 | 41562 | | |
| 2026-10-24 20:00 | 48294 | | |
| 2026-10-24 19:00 | 50325 | | |
| 2026-10-24 18:00 | 45675 | | |
| 2026-10-24 17:00 | 39006 | | |
| 2026-10-24 16:00 | 34763 | | |
| 2026-10-24 15:00 | 33050 | | |
| 2026-10-24 14:00 | 32400 | | |
| 2026-10-24 13:00 | 32719 | | |
| 2026-10-24 12:00 | 35069 | | |
| 2026-10-24 11:00 | 40875 | | |
| 2026-10-24 10:00 | 50413 | | |
| 2026-10-24 09:00 | 58956 | | |
| 2026-10-24 08:00 | 59819 | | |
| 2026-10-24 07:00 | 54494 | | |
| 2026-10-24 06:00 | 49362 | | |
| 2026-10-24 05:00 | 45569 | | |
| 2026-10-24 04:00 | 41987 | | |
| 2026-10-24 03:00 | 39106 | | |
| 2026-10-24 02:00 | 37562 | | |
| 2026-10-24 01:00 | 38288 | | |
| 2026-10-24 00:00 | 40475 | | |
| 2026-10-23 23:00 | 41494 | | |
| 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 | | |