COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2026-09-15 06:00 | 48388 | | |
| 2026-09-15 05:00 | 40212 | | |
| 2026-09-15 04:00 | 35562 | | |
| 2026-09-15 03:00 | 34256 | | |
| 2026-09-15 02:00 | 34319 | | |
| 2026-09-15 01:00 | 36138 | | |
| 2026-09-15 00:00 | 40138 | | |
| 2026-09-14 23:00 | 44413 | | |
| 2026-09-14 22:00 | 48525 | | |
| 2026-09-14 21:00 | 53775 | | |
| 2026-09-14 20:00 | 58600 | | |
| 2026-09-14 19:00 | 59675 | | |
| 2026-09-14 18:00 | 54800 | | |
| 2026-09-14 17:00 | 45581 | | |
| 2026-09-14 16:00 | 38369 | | |
| 2026-09-14 15:00 | 36106 | | |
| 2026-09-14 14:00 | 34550 | | |
| 2026-09-14 13:00 | 31556 | | |
| 2026-09-14 12:00 | 29681 | | |
| 2026-09-14 11:00 | 29325 | | |
| 2026-09-14 10:00 | 29031 | | |
| 2026-09-14 09:00 | 30512 | | |
| 2026-09-14 08:00 | 36763 | | |
| 2026-09-14 07:00 | 44638 | | |
| 2026-09-14 06:00 | 46288 | | |
| 2026-09-14 05:00 | 40650 | | |
| 2026-09-14 04:00 | 34544 | | |
| 2026-09-14 03:00 | 32281 | | |
| 2026-09-14 02:00 | 32844 | | |
| 2026-09-14 01:00 | 34625 | | |
| 2026-09-14 00:00 | 37075 | | |
| 2026-09-13 23:00 | 40062 | | |
| 2026-09-13 22:00 | 44062 | | |
| 2026-09-13 21:00 | 49100 | | |
| 2026-09-13 20:00 | 53263 | | |
| 2026-09-13 19:00 | 54200 | | |
| 2026-09-13 18:00 | 51675 | | |
| 2026-09-13 17:00 | 47619 | | |
| 2026-09-13 16:00 | 44194 | | |
| 2026-09-13 15:00 | 42275 | | |
| 2026-09-13 14:00 | 41656 | | |
| 2026-09-13 13:00 | 41894 | | |
| 2026-09-13 12:00 | 42581 | | |
| 2026-09-13 11:00 | 43069 | | |
| 2026-09-13 10:00 | 42862 | | |
| 2026-09-13 09:00 | 42875 | | |
| 2026-09-13 08:00 | 43656 | | |
| 2026-09-13 07:00 | 42881 | | |
| 2026-09-13 06:00 | 39344 | | |
| 2026-09-13 05:00 | 36250 | | |
| 2026-09-13 04:00 | 36781 | | |
| 2026-09-13 03:00 | 40669 | | |
| 2026-09-13 02:00 | 44837 | | |
| 2026-09-13 01:00 | 46369 | | |
| 2026-09-13 00:00 | 46663 | | |
| 2026-09-12 23:00 | 48806 | | |
| 2026-09-12 22:00 | 51763 | | |
| 2026-09-12 21:00 | 53106 | | |
| 2026-09-12 20:00 | 53806 | | |
| 2026-09-12 19:00 | 55131 | | |
| 2026-09-12 18:00 | 54987 | | |
| 2026-09-12 17:00 | 51294 | | |
| 2026-09-12 16:00 | 45888 | | |
| 2026-09-12 15:00 | 41750 | | |
| 2026-09-12 14:00 | 39556 | | |
| 2026-09-12 13:00 | 39369 | | |
| 2026-09-12 12:00 | 40906 | | |
| 2026-09-12 11:00 | 42469 | | |
| 2026-09-12 10:00 | 43025 | | |
| 2026-09-12 09:00 | 42675 | | |
| 2026-09-12 08:00 | 41131 | | |
| 2026-09-12 07:00 | 37712 | | |
| 2026-09-12 06:00 | 32875 | | |
| 2026-09-12 05:00 | 28881 | | |
| 2026-09-12 04:00 | 28038 | | |
| 2026-09-12 03:00 | 31387 | | |
| 2026-09-12 02:00 | 38013 | | |
| 2026-09-12 01:00 | 45087 | | |
| 2026-09-12 00:00 | 50194 | | |
| 2026-09-11 23:00 | 53163 | | |
| 2026-09-11 22:00 | 55969 | | |
| 2026-09-11 21:00 | 60688 | | |
| 2026-09-11 20:00 | 66300 | | |
| 2026-09-11 19:00 | 68369 | | |
| 2026-09-11 18:00 | 64088 | | |
| 2026-09-11 17:00 | 56719 | | |
| 2026-09-11 16:00 | 51519 | | |
| 2026-09-11 15:00 | 49206 | | |
| 2026-09-11 14:00 | 47812 | | |
| 2026-09-11 13:00 | 47175 | | |
| 2026-09-11 12:00 | 46925 | | |
| 2026-09-11 11:00 | 44688 | | |
| 2026-09-11 10:00 | 39888 | | |
| 2026-09-11 09:00 | 35606 | | |
| 2026-09-11 08:00 | 34781 | | |
| 2026-09-11 07:00 | 36487 | | |
| 2026-09-11 06:00 | 37288 | | |
| 2026-09-11 05:00 | 35869 | | |
| 2026-09-11 04:00 | 34263 | | |
| 2026-09-11 03:00 | 34000 | | |
| 2026-09-11 02:00 | 34156 | | |
| 2026-09-11 01:00 | 33919 | | |
| 2026-09-11 00:00 | 34337 | | |
| 2026-09-10 23:00 | 37469 | | |
| 2026-09-10 22:00 | 44862 | | |
| 2026-09-10 21:00 | 56131 | | |
| 2026-09-10 20:00 | 68119 | | |
| 2026-09-10 19:00 | 76356 | | |
| 2026-09-10 18:00 | 78569 | | |
| 2026-09-10 17:00 | 75319 | | |
| 2026-09-10 16:00 | 68075 | | |
| 2026-09-10 15:00 | 59094 | | |
| 2026-09-10 14:00 | 51281 | | |
| 2026-09-10 13:00 | 45850 | | |
| 2026-09-10 12:00 | 41725 | | |
| 2026-09-10 11:00 | 38375 | | |
| 2026-09-10 10:00 | 36525 | | |
| 2026-09-10 09:00 | 36631 | | |
| 2026-09-10 08:00 | 38481 | | |
| 2026-09-10 07:00 | 40638 | | |
| 2026-09-10 06:00 | 40594 | | |
| 2026-09-10 05:00 | 37587 | | |
| 2026-09-10 04:00 | 35087 | | |
| 2026-09-10 03:00 | 36900 | | |
| 2026-09-10 02:00 | 41469 | | |
| 2026-09-10 01:00 | 44944 | | |
| 2026-09-10 00:00 | 46775 | | |
| 2026-09-09 23:00 | 50081 | | |
| 2026-09-09 22:00 | 58856 | | |
| 2026-09-09 21:00 | 72062 | | |
| 2026-09-09 20:00 | 83412 | | |
| 2026-09-09 19:00 | 87981 | | |
| 2026-09-09 18:00 | 83050 | | |
| 2026-09-09 17:00 | 68862 | | |
| 2026-09-09 16:00 | 51600 | | |
| 2026-09-09 15:00 | 37712 | | |
| 2026-09-09 14:00 | 28262 | | |
| 2026-09-09 13:00 | 22331 | | |
| 2026-09-09 12:00 | 19669 | | |
| 2026-09-09 11:00 | 20244 | | |
| 2026-09-09 10:00 | 24075 | | |
| 2026-09-09 09:00 | 29294 | | |
| 2026-09-09 08:00 | 33100 | | |
| 2026-09-09 07:00 | 34256 | | |
| 2026-09-09 06:00 | 32056 | | |
| 2026-09-09 05:00 | 28331 | | |
| 2026-09-09 04:00 | 27919 | | |
| 2026-09-09 03:00 | 32513 | | |
| 2026-09-09 02:00 | 39763 | | |
| 2026-09-09 01:00 | 47994 | | |
| 2026-09-09 00:00 | 56706 | | |
| 2026-09-08 23:00 | 65275 | | |
| 2026-09-08 22:00 | 74388 | | |
| 2026-09-08 21:00 | 84062 | | |
| 2026-09-08 20:00 | 90494 | | |
| 2026-09-08 19:00 | 90394 | | |
| 2026-09-08 18:00 | 84963 | | |
| 2026-09-08 17:00 | 77331 | | |
| 2026-09-08 16:00 | 68544 | | |
| 2026-09-08 15:00 | 57900 | | |
| 2026-09-08 14:00 | 47119 | | |
| 2026-09-08 13:00 | 38944 | | |
| 2026-09-08 12:00 | 34106 | | |
| 2026-09-08 11:00 | 33150 | | |
| 2026-09-08 10:00 | 36250 | | |
| 2026-09-08 09:00 | 41888 | | |
| 2026-09-08 08:00 | 46619 | | |
| 2026-09-08 07:00 | 46688 | | |
| 2026-09-08 06:00 | 42538 | | |
| 2026-09-08 05:00 | 38112 | | |
| 2026-09-08 04:00 | 36362 | | |
| 2026-09-08 03:00 | 38337 | | |
| 2026-09-08 02:00 | 43100 | | |
| 2026-09-08 01:00 | 48812 | | |
| 2026-09-08 00:00 | 55031 | | |
| 2026-09-07 23:00 | 61094 | | |
| 2026-09-07 22:00 | 65356 | | |
| 2026-09-07 21:00 | 67844 | | |
| 2026-09-07 20:00 | 68450 | | |
| 2026-09-07 19:00 | 63919 | | |
| 2026-09-07 18:00 | 52675 | | |
| 2026-09-07 17:00 | 39906 | | |
| 2026-09-07 16:00 | 32144 | | |
| 2026-09-07 15:00 | 30656 | | |
| 2026-09-07 14:00 | 32413 | | |
| 2026-09-07 13:00 | 33369 | | |
| 2026-09-07 12:00 | 31500 | | |
| 2026-09-07 11:00 | 27844 | | |
| 2026-09-07 10:00 | 24800 | | |
| 2026-09-07 09:00 | 24481 | | |
| 2026-09-07 08:00 | 27156 | | |
| 2026-09-07 07:00 | 30900 | | |
| 2026-09-07 06:00 | 33431 | | |
| 2026-09-07 05:00 | 34212 | | |
| 2026-09-07 04:00 | 34419 | | |
| 2026-09-07 03:00 | 34763 | | |
| 2026-09-07 02:00 | 34919 | | |
| 2026-09-07 01:00 | 34175 | | |
| 2026-09-07 00:00 | 32312 | | |
| 2026-09-06 23:00 | 31256 | | |
| 2026-09-06 22:00 | 33175 | | |
| 2026-09-06 21:00 | 36869 | | |
| 2026-09-06 20:00 | 39737 | | |
| 2026-09-06 19:00 | 41631 | | |
| 2026-09-06 18:00 | 43388 | | |
| 2026-09-06 17:00 | 44269 | | |
| 2026-09-06 16:00 | 43325 | | |
| 2026-09-06 15:00 | 41388 | | |
| 2026-09-06 14:00 | 40369 | | |
| 2026-09-06 13:00 | 40200 | | |
| 2026-09-06 12:00 | 38356 | | |
| 2026-09-06 11:00 | 34413 | | |
| 2026-09-06 10:00 | 31087 | | |
| 2026-09-06 09:00 | 29800 | | |
| 2026-09-06 08:00 | 29856 | | |
| 2026-09-06 07:00 | 30425 | | |
| 2026-09-06 06:00 | 30931 | | |
| 2026-09-06 05:00 | 31613 | | |
| 2026-09-06 04:00 | 33163 | | |
| 2026-09-06 03:00 | 35869 | | |
| 2026-09-06 02:00 | 39331 | | |
| 2026-09-06 01:00 | 41888 | | |
| 2026-09-06 00:00 | 42575 | | |
| 2026-09-05 23:00 | 43556 | | |
| 2026-09-05 22:00 | 48612 | | |
| 2026-09-05 21:00 | 57987 | | |
| 2026-09-05 20:00 | 65200 | | |
| 2026-09-05 19:00 | 64487 | | |
| 2026-09-05 18:00 | 57806 | | |
| 2026-09-05 17:00 | 49819 | | |
| 2026-09-05 16:00 | 43425 | | |
| 2026-09-05 15:00 | 39981 | | |
| 2026-09-05 14:00 | 39375 | | |
| 2026-09-05 13:00 | 40625 | | |
| 2026-09-05 12:00 | 42413 | | |
| 2026-09-05 11:00 | 44094 | | |
| 2026-09-05 10:00 | 46156 | | |
| 2026-09-05 09:00 | 49481 | | |
| 2026-09-05 08:00 | 53425 | | |
| 2026-09-05 07:00 | 54138 | | |
| 2026-09-05 06:00 | 49600 | | |
| 2026-09-05 05:00 | 44212 | | |
| 2026-09-05 04:00 | 42513 | | |
| 2026-09-05 03:00 | 44350 | | |
| 2026-09-05 02:00 | 48269 | | |
| 2026-09-05 01:00 | 52756 | | |
| 2026-09-05 00:00 | 55288 | | |
| 2026-09-04 23:00 | 55025 | | |
| 2026-09-04 22:00 | 55781 | | |
| 2026-09-04 21:00 | 61556 | | |
| 2026-09-04 20:00 | 69656 | | |
| 2026-09-04 19:00 | 73919 | | |
| 2026-09-04 18:00 | 72531 | | |
| 2026-09-04 17:00 | 68125 | | |