COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 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 | | |
| 2025-10-16 16:00 | 45694 | | |
| 2025-10-16 15:00 | 49062 | | |
| 2025-10-16 14:00 | 55925 | | |
| 2025-10-16 13:00 | 64325 | | |
| 2025-10-16 12:00 | 73925 | | |
| 2025-10-16 11:00 | 83606 | | |
| 2025-10-16 10:00 | 93806 | | |
| 2025-10-16 09:00 | 105537 | | |
| 2025-10-16 08:00 | 115213 | | |
| 2025-10-16 07:00 | 114731 | | |
| 2025-10-16 06:00 | 100500 | | |
| 2025-10-16 05:00 | 79763 | | |
| 2025-10-16 04:00 | 63606 | | |
| 2025-10-16 03:00 | 56756 | | |
| 2025-10-16 02:00 | 56487 | | |
| 2025-10-16 01:00 | 58356 | | |
| 2025-10-16 00:00 | 61612 | | |
| 2025-10-15 23:00 | 67662 | | |
| 2025-10-15 22:00 | 74963 | | |
| 2025-10-15 21:00 | 80619 | | |
| 2025-10-15 20:00 | 84025 | | |
| 2025-10-15 19:00 | 84125 | | |
| 2025-10-15 18:00 | 78144 | | |
| 2025-10-15 17:00 | 67300 | | |
| 2025-10-15 16:00 | 57462 | | |
| 2025-10-15 15:00 | 52856 | | |
| 2025-10-15 14:00 | 55356 | | |
| 2025-10-15 13:00 | 64862 | | |
| 2025-10-15 12:00 | 76812 | | |
| 2025-10-15 11:00 | 87131 | | |
| 2025-10-15 10:00 | 97494 | | |
| 2025-10-15 09:00 | 108150 | | |
| 2025-10-15 08:00 | 111694 | | |
| 2025-10-15 07:00 | 102300 | | |
| 2025-10-15 06:00 | 84237 | | |
| 2025-10-15 05:00 | 65081 | | |
| 2025-10-15 04:00 | 50525 | | |
| 2025-10-15 03:00 | 45619 | | |
| 2025-10-15 02:00 | 49556 | | |
| 2025-10-15 01:00 | 55862 | | |
| 2025-10-15 00:00 | 61737 | | |
| 2025-10-14 23:00 | 68544 | | |
| 2025-10-14 22:00 | 76831 | | |
| 2025-10-14 21:00 | 84819 | | |
| 2025-10-14 20:00 | 88438 | | |
| 2025-10-14 19:00 | 84206 | | |
| 2025-10-14 18:00 | 73350 | | |
| 2025-10-14 17:00 | 62237 | | |
| 2025-10-14 16:00 | 57938 | | |
| 2025-10-14 15:00 | 62175 | | |
| 2025-10-14 14:00 | 69944 | | |
| 2025-10-14 13:00 | 77225 | | |
| 2025-10-14 12:00 | 85744 | | |
| 2025-10-14 11:00 | 96362 | | |
| 2025-10-14 10:00 | 106719 | | |
| 2025-10-14 09:00 | 113906 | | |
| 2025-10-14 08:00 | 113838 | | |
| 2025-10-14 07:00 | 103138 | | |
| 2025-10-14 06:00 | 83075 | | |
| 2025-10-14 05:00 | 60844 | | |
| 2025-10-14 04:00 | 45369 | | |
| 2025-10-14 03:00 | 40163 | | |
| 2025-10-14 02:00 | 42688 | | |
| 2025-10-14 01:00 | 49575 | | |
| 2025-10-14 00:00 | 59681 | | |
| 2025-10-13 23:00 | 72088 | | |
| 2025-10-13 22:00 | 84456 | | |
| 2025-10-13 21:00 | 93838 | | |
| 2025-10-13 20:00 | 97119 | | |
| 2025-10-13 19:00 | 94919 | | |
| 2025-10-13 18:00 | 91550 | | |
| 2025-10-13 17:00 | 87406 | | |
| 2025-10-13 16:00 | 80750 | | |
| 2025-10-13 15:00 | 74625 | | |
| 2025-10-13 14:00 | 73269 | | |
| 2025-10-13 13:00 | 76306 | | |
| 2025-10-13 12:00 | 79781 | | |
| 2025-10-13 11:00 | 81456 | | |
| 2025-10-13 10:00 | 83144 | | |
| 2025-10-13 09:00 | 85569 | | |
| 2025-10-13 08:00 | 85013 | | |
| 2025-10-13 07:00 | 78606 | | |
| 2025-10-13 06:00 | 68662 | | |
| 2025-10-13 05:00 | 59275 | | |
| 2025-10-13 04:00 | 52831 | | |
| 2025-10-13 03:00 | 49894 | | |
| 2025-10-13 02:00 | 48900 | | |
| 2025-10-13 01:00 | 47788 | | |
| 2025-10-13 00:00 | 47806 | | |
| 2025-10-12 23:00 | 52375 | | |
| 2025-10-12 22:00 | 61625 | | |
| 2025-10-12 21:00 | 72356 | | |
| 2025-10-12 20:00 | 81350 | | |
| 2025-10-12 19:00 | 85037 | | |
| 2025-10-12 18:00 | 80688 | | |
| 2025-10-12 17:00 | 71494 | | |
| 2025-10-12 16:00 | 64263 | | |
| 2025-10-12 15:00 | 60913 | | |
| 2025-10-12 14:00 | 59606 | | |
| 2025-10-12 13:00 | 60075 | | |
| 2025-10-12 12:00 | 61975 | | |
| 2025-10-12 11:00 | 62913 | | |
| 2025-10-12 10:00 | 60181 | | |
| 2025-10-12 09:00 | 54006 | | |
| 2025-10-12 08:00 | 47925 | | |
| 2025-10-12 07:00 | 44394 | | |
| 2025-10-12 06:00 | 43044 | | |
| 2025-10-12 05:00 | 43000 | | |
| 2025-10-12 04:00 | 43656 | | |
| 2025-10-12 03:00 | 44119 | | |
| 2025-10-12 02:00 | 43281 | | |
| 2025-10-12 01:00 | 40756 | | |
| 2025-10-12 00:00 | 37856 | | |
| 2025-10-11 23:00 | 36656 | | |
| 2025-10-11 22:00 | 37875 | | |
| 2025-10-11 21:00 | 40300 | | |
| 2025-10-11 20:00 | 41994 | | |
| 2025-10-11 19:00 | 41750 | | |
| 2025-10-11 18:00 | 39756 | | |
| 2025-10-11 17:00 | 38006 | | |
| 2025-10-11 16:00 | 39231 | | |
| 2025-10-11 15:00 | 43744 | | |
| 2025-10-11 14:00 | 49325 | | |
| 2025-10-11 13:00 | 54788 | | |
| 2025-10-11 12:00 | 60106 | | |
| 2025-10-11 11:00 | 64112 | | |
| 2025-10-11 10:00 | 65787 | | |
| 2025-10-11 09:00 | 64800 | | |
| 2025-10-11 08:00 | 60487 | | |
| 2025-10-11 07:00 | 54400 | | |
| 2025-10-11 06:00 | 49763 | | |
| 2025-10-11 05:00 | 47219 | | |
| 2025-10-11 04:00 | 45919 | | |
| 2025-10-11 03:00 | 45669 | | |
| 2025-10-11 02:00 | 45794 | | |
| 2025-10-11 01:00 | 45306 | | |
| 2025-10-11 00:00 | 44806 | | |
| 2025-10-10 23:00 | 46250 | | |
| 2025-10-10 22:00 | 50275 | | |
| 2025-10-10 21:00 | 55981 | | |
| 2025-10-10 20:00 | 62275 | | |
| 2025-10-10 19:00 | 66981 | | |
| 2025-10-10 18:00 | 66619 | | |
| 2025-10-10 17:00 | 60025 | | |