COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2025-10-27 10:00 | 98019 | | |
| 2025-10-27 09:00 | 100862 | | |
| 2025-10-27 08:00 | 94763 | | |
| 2025-10-27 07:00 | 80625 | | |
| 2025-10-27 06:00 | 62681 | | |
| 2025-10-27 05:00 | 46619 | | |
| 2025-10-27 04:00 | 38019 | | |
| 2025-10-27 03:00 | 37862 | | |
| 2025-10-27 02:00 | 41694 | | |
| 2025-10-27 01:00 | 44844 | | |
| 2025-10-27 00:00 | 46100 | | |
| 2025-10-26 23:00 | 47644 | | |
| 2025-10-26 22:00 | 50731 | | |
| 2025-10-26 21:00 | 52837 | | |
| 2025-10-26 20:00 | 52300 | | |
| 2025-10-26 19:00 | 51225 | | |
| 2025-10-26 18:00 | 50594 | | |
| 2025-10-26 17:00 | 48819 | | |
| 2025-10-26 16:00 | 46569 | | |
| 2025-10-26 15:00 | 47575 | | |
| 2025-10-26 14:00 | 53569 | | |
| 2025-10-26 13:00 | 61112 | | |
| 2025-10-26 12:00 | 65888 | | |
| 2025-10-26 11:00 | 67331 | | |
| 2025-10-26 10:00 | 66331 | | |
| 2025-10-26 09:00 | 62831 | | |
| 2025-10-26 08:00 | 56500 | | |
| 2025-10-26 07:00 | 48094 | | |
| 2025-10-26 06:00 | 40956 | | |
| 2025-10-26 05:00 | 38094 | | |
| 2025-10-26 04:00 | 38806 | | |
| 2025-10-26 03:00 | 40881 | | |
| 2025-10-26 02:00 | 42231 | | |
| 2025-10-26 01:00 | 40969 | | |
| 2025-10-26 00:00 | 37362 | | |
| 2025-10-25 23:00 | 34531 | | |
| 2025-10-25 22:00 | 35619 | | |
| 2025-10-25 21:00 | 39938 | | |
| 2025-10-25 20:00 | 44769 | | |
| 2025-10-25 19:00 | 50394 | | |
| 2025-10-25 18:00 | 57894 | | |
| 2025-10-25 17:00 | 65744 | | |
| 2025-10-25 16:00 | 72656 | | |
| 2025-10-25 15:00 | 78450 | | |
| 2025-10-25 14:00 | 81281 | | |
| 2025-10-25 13:00 | 80062 | | |
| 2025-10-25 12:00 | 77531 | | |
| 2025-10-25 11:00 | 75612 | | |
| 2025-10-25 10:00 | 72581 | | |
| 2025-10-25 09:00 | 67525 | | |
| 2025-10-25 08:00 | 62669 | | |
| 2025-10-25 07:00 | 59312 | | |
| 2025-10-25 06:00 | 55587 | | |
| 2025-10-25 05:00 | 50544 | | |
| 2025-10-25 04:00 | 46069 | | |
| 2025-10-25 03:00 | 43775 | | |
| 2025-10-25 02:00 | 42644 | | |
| 2025-10-25 01:00 | 40019 | | |
| 2025-10-25 00:00 | 35837 | | |
| 2025-10-24 23:00 | 33100 | | |
| 2025-10-24 22:00 | 33581 | | |
| 2025-10-24 21:00 | 38725 | | |
| 2025-10-24 20:00 | 50612 | | |
| 2025-10-24 19:00 | 66650 | | |
| 2025-10-24 18:00 | 79406 | | |
| 2025-10-24 17:00 | 85106 | | |
| 2025-10-24 16:00 | 87338 | | |
| 2025-10-24 15:00 | 90350 | | |
| 2025-10-24 14:00 | 94588 | | |
| 2025-10-24 13:00 | 99431 | | |
| 2025-10-24 12:00 | 104006 | | |
| 2025-10-24 11:00 | 106481 | | |
| 2025-10-24 10:00 | 106912 | | |
| 2025-10-24 09:00 | 107606 | | |
| 2025-10-24 08:00 | 107513 | | |
| 2025-10-24 07:00 | 101794 | | |
| 2025-10-24 06:00 | 88331 | | |
| 2025-10-24 05:00 | 71562 | | |
| 2025-10-24 04:00 | 59913 | | |
| 2025-10-24 03:00 | 57106 | | |
| 2025-10-24 02:00 | 58525 | | |
| 2025-10-24 01:00 | 58344 | | |
| 2025-10-24 00:00 | 56919 | | |
| 2025-10-23 23:00 | 58950 | | |
| 2025-10-23 22:00 | 66138 | | |
| 2025-10-23 21:00 | 76281 | | |
| 2025-10-23 20:00 | 85806 | | |
| 2025-10-23 19:00 | 90362 | | |
| 2025-10-23 18:00 | 86819 | | |
| 2025-10-23 17:00 | 75844 | | |
| 2025-10-23 16:00 | 63681 | | |
| 2025-10-23 15:00 | 58200 | | |
| 2025-10-23 14:00 | 60881 | | |
| 2025-10-23 13:00 | 66281 | | |
| 2025-10-23 12:00 | 69906 | | |
| 2025-10-23 11:00 | 74062 | | |
| 2025-10-23 10:00 | 84138 | | |
| 2025-10-23 09:00 | 100062 | | |
| 2025-10-23 08:00 | 111694 | | |
| 2025-10-23 07:00 | 106206 | | |
| 2025-10-23 06:00 | 83294 | | |
| 2025-10-23 05:00 | 57087 | | |
| 2025-10-23 04:00 | 40956 | | |
| 2025-10-23 03:00 | 35894 | | |
| 2025-10-23 02:00 | 35413 | | |
| 2025-10-23 01:00 | 34950 | | |
| 2025-10-23 00:00 | 34344 | | |
| 2025-10-22 23:00 | 35819 | | |
| 2025-10-22 22:00 | 40806 | | |
| 2025-10-22 21:00 | 49044 | | |
| 2025-10-22 20:00 | 57688 | | |
| 2025-10-22 19:00 | 61775 | | |
| 2025-10-22 18:00 | 60112 | | |
| 2025-10-22 17:00 | 56275 | | |
| 2025-10-22 16:00 | 53300 | | |
| 2025-10-22 15:00 | 53556 | | |
| 2025-10-22 14:00 | 59038 | | |
| 2025-10-22 13:00 | 68044 | | |
| 2025-10-22 12:00 | 77956 | | |
| 2025-10-22 11:00 | 89394 | | |
| 2025-10-22 10:00 | 103225 | | |
| 2025-10-22 09:00 | 116475 | | |
| 2025-10-22 08:00 | 123075 | | |
| 2025-10-22 07:00 | 117944 | | |
| 2025-10-22 06:00 | 99944 | | |
| 2025-10-22 05:00 | 74731 | | |
| 2025-10-22 04:00 | 53406 | | |
| 2025-10-22 03:00 | 42337 | | |
| 2025-10-22 02:00 | 38894 | | |
| 2025-10-22 01:00 | 38719 | | |
| 2025-10-22 00:00 | 41331 | | |
| 2025-10-21 23:00 | 48569 | | |
| 2025-10-21 22:00 | 59244 | | |
| 2025-10-21 21:00 | 69069 | | |
| 2025-10-21 20:00 | 77031 | | |
| 2025-10-21 19:00 | 84838 | | |
| 2025-10-21 18:00 | 89619 | | |
| 2025-10-21 17:00 | 86294 | | |
| 2025-10-21 16:00 | 78200 | | |
| 2025-10-21 15:00 | 74475 | | |
| 2025-10-21 14:00 | 77444 | | |
| 2025-10-21 13:00 | 83362 | | |
| 2025-10-21 12:00 | 89644 | | |
| 2025-10-21 11:00 | 94400 | | |
| 2025-10-21 10:00 | 97844 | | |
| 2025-10-21 09:00 | 102644 | | |
| 2025-10-21 08:00 | 106075 | | |
| 2025-10-21 07:00 | 100781 | | |
| 2025-10-21 06:00 | 84375 | | |
| 2025-10-21 05:00 | 63013 | | |
| 2025-10-21 04:00 | 47000 | | |
| 2025-10-21 03:00 | 40688 | | |
| 2025-10-21 02:00 | 40025 | | |
| 2025-10-21 01:00 | 41263 | | |
| 2025-10-21 00:00 | 44062 | | |
| 2025-10-20 23:00 | 48919 | | |
| 2025-10-20 22:00 | 57975 | | |
| 2025-10-20 21:00 | 71544 | | |
| 2025-10-20 20:00 | 83069 | | |
| 2025-10-20 19:00 | 86231 | | |
| 2025-10-20 18:00 | 81331 | | |
| 2025-10-20 17:00 | 71987 | | |
| 2025-10-20 16:00 | 63456 | | |
| 2025-10-20 15:00 | 59425 | | |
| 2025-10-20 14:00 | 57906 | | |
| 2025-10-20 13:00 | 56712 | | |
| 2025-10-20 12:00 | 57675 | | |
| 2025-10-20 11:00 | 61194 | | |
| 2025-10-20 10:00 | 64881 | | |
| 2025-10-20 09:00 | 67444 | | |
| 2025-10-20 08:00 | 68787 | | |
| 2025-10-20 07:00 | 68769 | | |
| 2025-10-20 06:00 | 64919 | | |
| 2025-10-20 05:00 | 55362 | | |
| 2025-10-20 04:00 | 45306 | | |
| 2025-10-20 03:00 | 40188 | | |
| 2025-10-20 02:00 | 38606 | | |
| 2025-10-20 01:00 | 38200 | | |
| 2025-10-20 00:00 | 39000 | | |
| 2025-10-19 23:00 | 41394 | | |
| 2025-10-19 22:00 | 45538 | | |
| 2025-10-19 21:00 | 50700 | | |
| 2025-10-19 20:00 | 54550 | | |
| 2025-10-19 19:00 | 54462 | | |
| 2025-10-19 18:00 | 49987 | | |
| 2025-10-19 17:00 | 44106 | | |
| 2025-10-19 16:00 | 40288 | | |
| 2025-10-19 15:00 | 38913 | | |
| 2025-10-19 14:00 | 39000 | | |
| 2025-10-19 13:00 | 40431 | | |
| 2025-10-19 12:00 | 42812 | | |
| 2025-10-19 11:00 | 45038 | | |
| 2025-10-19 10:00 | 47281 | | |
| 2025-10-19 09:00 | 50769 | | |
| 2025-10-19 08:00 | 53319 | | |
| 2025-10-19 07:00 | 50869 | | |
| 2025-10-19 06:00 | 44500 | | |
| 2025-10-19 05:00 | 39450 | | |
| 2025-10-19 04:00 | 39606 | | |
| 2025-10-19 03:00 | 45775 | | |
| 2025-10-19 02:00 | 55569 | | |
| 2025-10-19 01:00 | 64456 | | |
| 2025-10-19 00:00 | 69125 | | |
| 2025-10-18 23:00 | 69694 | | |
| 2025-10-18 22:00 | 68950 | | |
| 2025-10-18 21:00 | 69263 | | |
| 2025-10-18 20:00 | 70094 | | |
| 2025-10-18 19:00 | 69838 | | |
| 2025-10-18 18:00 | 67031 | | |
| 2025-10-18 17:00 | 61469 | | |
| 2025-10-18 16:00 | 56056 | | |
| 2025-10-18 15:00 | 52975 | | |
| 2025-10-18 14:00 | 52025 | | |
| 2025-10-18 13:00 | 53750 | | |
| 2025-10-18 12:00 | 58781 | | |
| 2025-10-18 11:00 | 66656 | | |
| 2025-10-18 10:00 | 76037 | | |
| 2025-10-18 09:00 | 83344 | | |
| 2025-10-18 08:00 | 84694 | | |
| 2025-10-18 07:00 | 80969 | | |
| 2025-10-18 06:00 | 75138 | | |
| 2025-10-18 05:00 | 67381 | | |
| 2025-10-18 04:00 | 59519 | | |
| 2025-10-18 03:00 | 55294 | | |
| 2025-10-18 02:00 | 54044 | | |
| 2025-10-18 01:00 | 53231 | | |
| 2025-10-18 00:00 | 52587 | | |
| 2025-10-17 23:00 | 52850 | | |
| 2025-10-17 22:00 | 54881 | | |
| 2025-10-17 21:00 | 58312 | | |
| 2025-10-17 20:00 | 61456 | | |
| 2025-10-17 19:00 | 61688 | | |
| 2025-10-17 18:00 | 55269 | | |
| 2025-10-17 17:00 | 43250 | | |
| 2025-10-17 16:00 | 33575 | | |
| 2025-10-17 15:00 | 30887 | | |
| 2025-10-17 14:00 | 32062 | | |
| 2025-10-17 13:00 | 33144 | | |
| 2025-10-17 12:00 | 33888 | | |
| 2025-10-17 11:00 | 36581 | | |
| 2025-10-17 10:00 | 42269 | | |
| 2025-10-17 09:00 | 48500 | | |
| 2025-10-17 08:00 | 51400 | | |
| 2025-10-17 07:00 | 48531 | | |
| 2025-10-17 06:00 | 41706 | | |
| 2025-10-17 05:00 | 36131 | | |
| 2025-10-17 04:00 | 34069 | | |
| 2025-10-17 03:00 | 34150 | | |
| 2025-10-17 02:00 | 35275 | | |
| 2025-10-17 01:00 | 36494 | | |
| 2025-10-17 00:00 | 37862 | | |
| 2025-10-16 23:00 | 41250 | | |
| 2025-10-16 22:00 | 47325 | | |
| 2025-10-16 21:00 | 54737 | | |
| 2025-10-16 20:00 | 61212 | | |
| 2025-10-16 19:00 | 63281 | | |
| 2025-10-16 18:00 | 58225 | | |
| 2025-10-16 17:00 | 49594 | | |