COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2026-07-16 05:00 | 43581 | | |
| 2026-07-16 04:00 | 44862 | | |
| 2026-07-16 03:00 | 49369 | | |
| 2026-07-16 02:00 | 55569 | | |
| 2026-07-16 01:00 | 64206 | | |
| 2026-07-16 00:00 | 75875 | | |
| 2026-07-15 23:00 | 89894 | | |
| 2026-07-15 22:00 | 105862 | | |
| 2026-07-15 21:00 | 122713 | | |
| 2026-07-15 20:00 | 136369 | | |
| 2026-07-15 19:00 | 143637 | | |
| 2026-07-15 18:00 | 146800 | | |
| 2026-07-15 17:00 | 150406 | | |
| 2026-07-15 16:00 | 154006 | | |
| 2026-07-15 15:00 | 152606 | | |
| 2026-07-15 14:00 | 143169 | | |
| 2026-07-15 13:00 | 126475 | | |
| 2026-07-15 12:00 | 108888 | | |
| 2026-07-15 11:00 | 97525 | | |
| 2026-07-15 10:00 | 90031 | | |
| 2026-07-15 09:00 | 80819 | | |
| 2026-07-15 08:00 | 70606 | | |
| 2026-07-15 07:00 | 61231 | | |
| 2026-07-15 06:00 | 52438 | | |
| 2026-07-15 05:00 | 45625 | | |
| 2026-07-15 04:00 | 42500 | | |
| 2026-07-15 03:00 | 42800 | | |
| 2026-07-15 02:00 | 45950 | | |
| 2026-07-15 01:00 | 52006 | | |
| 2026-07-15 00:00 | 61256 | | |
| 2026-07-14 23:00 | 73981 | | |
| 2026-07-14 22:00 | 91544 | | |
| 2026-07-14 21:00 | 113706 | | |
| 2026-07-14 20:00 | 133356 | | |
| 2026-07-14 19:00 | 141662 | | |
| 2026-07-14 18:00 | 138037 | | |
| 2026-07-14 17:00 | 129781 | | |
| 2026-07-14 16:00 | 124037 | | |
| 2026-07-14 15:00 | 121537 | | |
| 2026-07-14 14:00 | 117994 | | |
| 2026-07-14 13:00 | 111169 | | |
| 2026-07-14 12:00 | 103106 | | |
| 2026-07-14 11:00 | 96231 | | |
| 2026-07-14 10:00 | 90744 | | |
| 2026-07-14 09:00 | 84744 | | |
| 2026-07-14 08:00 | 76938 | | |
| 2026-07-14 07:00 | 68263 | | |
| 2026-07-14 06:00 | 60125 | | |
| 2026-07-14 05:00 | 54212 | | |
| 2026-07-14 04:00 | 52081 | | |
| 2026-07-14 03:00 | 53362 | | |
| 2026-07-14 02:00 | 57069 | | |
| 2026-07-14 01:00 | 63856 | | |
| 2026-07-14 00:00 | 75781 | | |
| 2026-07-13 23:00 | 94081 | | |
| 2026-07-13 22:00 | 116294 | | |
| 2026-07-13 21:00 | 137281 | | |
| 2026-07-13 20:00 | 154319 | | |
| 2026-07-13 19:00 | 166894 | | |
| 2026-07-13 18:00 | 172669 | | |
| 2026-07-13 17:00 | 169675 | | |
| 2026-07-13 16:00 | 160725 | | |
| 2026-07-13 15:00 | 151144 | | |
| 2026-07-13 14:00 | 143662 | | |
| 2026-07-13 13:00 | 137656 | | |
| 2026-07-13 12:00 | 131387 | | |
| 2026-07-13 11:00 | 123931 | | |
| 2026-07-13 10:00 | 114688 | | |
| 2026-07-13 09:00 | 103263 | | |
| 2026-07-13 08:00 | 92306 | | |
| 2026-07-13 07:00 | 84669 | | |
| 2026-07-13 06:00 | 78756 | | |
| 2026-07-13 05:00 | 73231 | | |
| 2026-07-13 04:00 | 70206 | | |
| 2026-07-13 03:00 | 71019 | | |
| 2026-07-13 02:00 | 74875 | | |
| 2026-07-13 01:00 | 81519 | | |
| 2026-07-13 00:00 | 90775 | | |
| 2026-07-12 23:00 | 101206 | | |
| 2026-07-12 22:00 | 112731 | | |
| 2026-07-12 21:00 | 125388 | | |
| 2026-07-12 20:00 | 134725 | | |
| 2026-07-12 19:00 | 135656 | | |
| 2026-07-12 18:00 | 129338 | | |
| 2026-07-12 17:00 | 121044 | | |
| 2026-07-12 16:00 | 114231 | | |
| 2026-07-12 15:00 | 109200 | | |
| 2026-07-12 14:00 | 104513 | | |
| 2026-07-12 13:00 | 99256 | | |
| 2026-07-12 12:00 | 94388 | | |
| 2026-07-12 11:00 | 90938 | | |
| 2026-07-12 10:00 | 87975 | | |
| 2026-07-12 09:00 | 83037 | | |
| 2026-07-12 08:00 | 74919 | | |
| 2026-07-12 07:00 | 65650 | | |
| 2026-07-12 06:00 | 58950 | | |
| 2026-07-12 05:00 | 57663 | | |
| 2026-07-12 04:00 | 61744 | | |
| 2026-07-12 03:00 | 68206 | | |
| 2026-07-12 02:00 | 75006 | | |
| 2026-07-12 01:00 | 83394 | | |
| 2026-07-12 00:00 | 94794 | | |
| 2026-07-11 23:00 | 108656 | | |
| 2026-07-11 22:00 | 124375 | | |
| 2026-07-11 21:00 | 141613 | | |
| 2026-07-11 20:00 | 156694 | | |
| 2026-07-11 19:00 | 163931 | | |
| 2026-07-11 18:00 | 162356 | | |
| 2026-07-11 17:00 | 154919 | | |
| 2026-07-11 16:00 | 144925 | | |
| 2026-07-11 15:00 | 136256 | | |
| 2026-07-11 14:00 | 130150 | | |
| 2026-07-11 13:00 | 123881 | | |
| 2026-07-11 12:00 | 116800 | | |
| 2026-07-11 11:00 | 111638 | | |
| 2026-07-11 10:00 | 107800 | | |
| 2026-07-11 09:00 | 101825 | | |
| 2026-07-11 08:00 | 93444 | | |
| 2026-07-11 07:00 | 83606 | | |
| 2026-07-11 06:00 | 73050 | | |
| 2026-07-11 05:00 | 65031 | | |
| 2026-07-11 04:00 | 61825 | | |
| 2026-07-11 03:00 | 62450 | | |
| 2026-07-11 02:00 | 66200 | | |
| 2026-07-11 01:00 | 73925 | | |
| 2026-07-11 00:00 | 87519 | | |
| 2026-07-10 23:00 | 107950 | | |
| 2026-07-10 22:00 | 131512 | | |
| 2026-07-10 21:00 | 150925 | | |
| 2026-07-10 20:00 | 161406 | | |
| 2026-07-10 19:00 | 162731 | | |
| 2026-07-10 18:00 | 157644 | | |
| 2026-07-10 17:00 | 151469 | | |
| 2026-07-10 16:00 | 149181 | | |
| 2026-07-10 15:00 | 151575 | | |
| 2026-07-10 14:00 | 154825 | | |
| 2026-07-10 13:00 | 153838 | | |
| 2026-07-10 12:00 | 147162 | | |
| 2026-07-10 11:00 | 135144 | | |
| 2026-07-10 10:00 | 117562 | | |
| 2026-07-10 09:00 | 97394 | | |
| 2026-07-10 08:00 | 78844 | | |
| 2026-07-10 07:00 | 63981 | | |
| 2026-07-10 06:00 | 55419 | | |
| 2026-07-10 05:00 | 53944 | | |
| 2026-07-10 04:00 | 56581 | | |
| 2026-07-10 03:00 | 62675 | | |
| 2026-07-10 02:00 | 72431 | | |
| 2026-07-10 01:00 | 83031 | | |
| 2026-07-10 00:00 | 94950 | | |
| 2026-07-09 23:00 | 111625 | | |
| 2026-07-09 22:00 | 131363 | | |
| 2026-07-09 21:00 | 148194 | | |
| 2026-07-09 20:00 | 157812 | | |
| 2026-07-09 19:00 | 160662 | | |
| 2026-07-09 18:00 | 159994 | | |
| 2026-07-09 17:00 | 157088 | | |
| 2026-07-09 16:00 | 152681 | | |
| 2026-07-09 15:00 | 148769 | | |
| 2026-07-09 14:00 | 144256 | | |
| 2026-07-09 13:00 | 135356 | | |
| 2026-07-09 12:00 | 121069 | | |
| 2026-07-09 11:00 | 105275 | | |
| 2026-07-09 10:00 | 93294 | | |
| 2026-07-09 09:00 | 86556 | | |
| 2026-07-09 08:00 | 81156 | | |
| 2026-07-09 07:00 | 72194 | | |
| 2026-07-09 06:00 | 60825 | | |
| 2026-07-09 05:00 | 53056 | | |
| 2026-07-09 04:00 | 51419 | | |
| 2026-07-09 03:00 | 54725 | | |
| 2026-07-09 02:00 | 63100 | | |
| 2026-07-09 01:00 | 76688 | | |
| 2026-07-09 00:00 | 92463 | | |
| 2026-07-08 23:00 | 107094 | | |
| 2026-07-08 22:00 | 119819 | | |
| 2026-07-08 21:00 | 130125 | | |
| 2026-07-08 20:00 | 136025 | | |
| 2026-07-08 19:00 | 136831 | | |
| 2026-07-08 18:00 | 134819 | | |
| 2026-07-08 17:00 | 131088 | | |
| 2026-07-08 16:00 | 124969 | | |
| 2026-07-08 15:00 | 116425 | | |
| 2026-07-08 14:00 | 105294 | | |
| 2026-07-08 13:00 | 93644 | | |
| 2026-07-08 12:00 | 85037 | | |
| 2026-07-08 11:00 | 79231 | | |
| 2026-07-08 10:00 | 73812 | | |
| 2026-07-08 09:00 | 69569 | | |
| 2026-07-08 08:00 | 69356 | | |
| 2026-07-08 07:00 | 72156 | | |
| 2026-07-08 06:00 | 74213 | | |
| 2026-07-08 05:00 | 74537 | | |
| 2026-07-08 04:00 | 74362 | | |
| 2026-07-08 03:00 | 75106 | | |
| 2026-07-08 02:00 | 76544 | | |
| 2026-07-08 01:00 | 76562 | | |
| 2026-07-08 00:00 | 77031 | | |
| 2026-07-07 23:00 | 82938 | | |
| 2026-07-07 22:00 | 94094 | | |
| 2026-07-07 21:00 | 106925 | | |
| 2026-07-07 20:00 | 119812 | | |
| 2026-07-07 19:00 | 131450 | | |
| 2026-07-07 18:00 | 138900 | | |
| 2026-07-07 17:00 | 139919 | | |
| 2026-07-07 16:00 | 136713 | | |
| 2026-07-07 15:00 | 132281 | | |
| 2026-07-07 14:00 | 125906 | | |
| 2026-07-07 13:00 | 118731 | | |
| 2026-07-07 12:00 | 114088 | | |
| 2026-07-07 11:00 | 111169 | | |
| 2026-07-07 10:00 | 107025 | | |
| 2026-07-07 09:00 | 99994 | | |
| 2026-07-07 08:00 | 89025 | | |
| 2026-07-07 07:00 | 74619 | | |
| 2026-07-07 06:00 | 61138 | | |
| 2026-07-07 05:00 | 54519 | | |
| 2026-07-07 04:00 | 56256 | | |
| 2026-07-07 03:00 | 62719 | | |
| 2026-07-07 02:00 | 69381 | | |
| 2026-07-07 01:00 | 75469 | | |
| 2026-07-07 00:00 | 84463 | | |
| 2026-07-06 23:00 | 97719 | | |
| 2026-07-06 22:00 | 113575 | | |
| 2026-07-06 21:00 | 130412 | | |
| 2026-07-06 20:00 | 143069 | | |
| 2026-07-06 19:00 | 145675 | | |
| 2026-07-06 18:00 | 139363 | | |
| 2026-07-06 17:00 | 128581 | | |
| 2026-07-06 16:00 | 115344 | | |
| 2026-07-06 15:00 | 101562 | | |
| 2026-07-06 14:00 | 90825 | | |
| 2026-07-06 13:00 | 84919 | | |
| 2026-07-06 12:00 | 81681 | | |
| 2026-07-06 11:00 | 78500 | | |
| 2026-07-06 10:00 | 75381 | | |
| 2026-07-06 09:00 | 73362 | | |
| 2026-07-06 08:00 | 72938 | | |
| 2026-07-06 07:00 | 73575 | | |
| 2026-07-06 06:00 | 74206 | | |
| 2026-07-06 05:00 | 74581 | | |
| 2026-07-06 04:00 | 75100 | | |
| 2026-07-06 03:00 | 77194 | | |
| 2026-07-06 02:00 | 84206 | | |
| 2026-07-06 01:00 | 98175 | | |
| 2026-07-06 00:00 | 115287 | | |
| 2026-07-05 23:00 | 128600 | | |
| 2026-07-05 22:00 | 135500 | | |
| 2026-07-05 21:00 | 138731 | | |
| 2026-07-05 20:00 | 140431 | | |
| 2026-07-05 19:00 | 138894 | | |
| 2026-07-05 18:00 | 131931 | | |
| 2026-07-05 17:00 | 121444 | | |