COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PST) | Discharge |
| 2026-01-30 00:00 | 132287 | | |
| 2026-01-29 23:00 | 138856 | | |
| 2026-01-29 22:00 | 146238 | | |
| 2026-01-29 21:00 | 151244 | | |
| 2026-01-29 20:00 | 153956 | | |
| 2026-01-29 19:00 | 155869 | | |
| 2026-01-29 18:00 | 154037 | | |
| 2026-01-29 17:00 | 142738 | | |
| 2026-01-29 16:00 | 124606 | | |
| 2026-01-29 15:00 | 110875 | | |
| 2026-01-29 14:00 | 105763 | | |
| 2026-01-29 13:00 | 105162 | | |
| 2026-01-29 12:00 | 106981 | | |
| 2026-01-29 11:00 | 112763 | | |
| 2026-01-29 10:00 | 124487 | | |
| 2026-01-29 09:00 | 138338 | | |
| 2026-01-29 08:00 | 145794 | | |
| 2026-01-29 07:00 | 143812 | | |
| 2026-01-29 06:00 | 135238 | | |
| 2026-01-29 05:00 | 124706 | | |
| 2026-01-29 04:00 | 117312 | | |
| 2026-01-29 03:00 | 115013 | | |
| 2026-01-29 02:00 | 116763 | | |
| 2026-01-29 01:00 | 120881 | | |
| 2026-01-29 00:00 | 125438 | | |
| 2026-01-28 23:00 | 128950 | | |
| 2026-01-28 22:00 | 130894 | | |
| 2026-01-28 21:00 | 133169 | | |
| 2026-01-28 20:00 | 138713 | | |
| 2026-01-28 19:00 | 145762 | | |
| 2026-01-28 18:00 | 146669 | | |
| 2026-01-28 17:00 | 135019 | | |
| 2026-01-28 16:00 | 115769 | | |
| 2026-01-28 15:00 | 102175 | | |
| 2026-01-28 14:00 | 99075 | | |
| 2026-01-28 13:00 | 100231 | | |
| 2026-01-28 12:00 | 100794 | | |
| 2026-01-28 11:00 | 102694 | | |
| 2026-01-28 10:00 | 110537 | | |
| 2026-01-28 09:00 | 124475 | | |
| 2026-01-28 08:00 | 136613 | | |
| 2026-01-28 07:00 | 138144 | | |
| 2026-01-28 06:00 | 128950 | | |
| 2026-01-28 05:00 | 117138 | | |
| 2026-01-28 04:00 | 110981 | | |
| 2026-01-28 03:00 | 111275 | | |
| 2026-01-28 02:00 | 112769 | | |
| 2026-01-28 01:00 | 112744 | | |
| 2026-01-28 00:00 | 114000 | | |
| 2026-01-27 23:00 | 119456 | | |
| 2026-01-27 22:00 | 128794 | | |
| 2026-01-27 21:00 | 140975 | | |
| 2026-01-27 20:00 | 153075 | | |
| 2026-01-27 19:00 | 159431 | | |
| 2026-01-27 18:00 | 155512 | | |
| 2026-01-27 17:00 | 140494 | | |
| 2026-01-27 16:00 | 121800 | | |
| 2026-01-27 15:00 | 112381 | | |
| 2026-01-27 14:00 | 116162 | | |
| 2026-01-27 13:00 | 124525 | | |
| 2026-01-27 12:00 | 129119 | | |
| 2026-01-27 11:00 | 130762 | | |
| 2026-01-27 10:00 | 134456 | | |
| 2026-01-27 09:00 | 141106 | | |
| 2026-01-27 08:00 | 146719 | | |
| 2026-01-27 07:00 | 146356 | | |
| 2026-01-27 06:00 | 138419 | | |
| 2026-01-27 05:00 | 127963 | | |
| 2026-01-27 04:00 | 121950 | | |
| 2026-01-27 03:00 | 120375 | | |
| 2026-01-27 02:00 | 120725 | | |
| 2026-01-27 01:00 | 125612 | | |
| 2026-01-27 00:00 | 136062 | | |
| 2026-01-26 23:00 | 146425 | | |
| 2026-01-26 22:00 | 152306 | | |
| 2026-01-26 21:00 | 155394 | | |
| 2026-01-26 20:00 | 157963 | | |
| 2026-01-26 19:00 | 159119 | | |
| 2026-01-26 18:00 | 155963 | | |
| 2026-01-26 17:00 | 146325 | | |
| 2026-01-26 16:00 | 134488 | | |
| 2026-01-26 15:00 | 129188 | | |
| 2026-01-26 14:00 | 132269 | | |
| 2026-01-26 13:00 | 138719 | | |
| 2026-01-26 12:00 | 144306 | | |
| 2026-01-26 11:00 | 146081 | | |
| 2026-01-26 10:00 | 145088 | | |
| 2026-01-26 09:00 | 146700 | | |
| 2026-01-26 08:00 | 150281 | | |
| 2026-01-26 07:00 | 148125 | | |
| 2026-01-26 06:00 | 136938 | | |
| 2026-01-26 05:00 | 122188 | | |
| 2026-01-26 04:00 | 110956 | | |
| 2026-01-26 03:00 | 105044 | | |
| 2026-01-26 02:00 | 103569 | | |
| 2026-01-26 01:00 | 107244 | | |
| 2026-01-26 00:00 | 116525 | | |
| 2026-01-25 23:00 | 129019 | | |
| 2026-01-25 22:00 | 139806 | | |
| 2026-01-25 21:00 | 145325 | | |
| 2026-01-25 20:00 | 146394 | | |
| 2026-01-25 19:00 | 143781 | | |
| 2026-01-25 18:00 | 134037 | | |
| 2026-01-25 17:00 | 116600 | | |
| 2026-01-25 16:00 | 100994 | | |
| 2026-01-25 15:00 | 97013 | | |
| 2026-01-25 14:00 | 103106 | | |
| 2026-01-25 13:00 | 112525 | | |
| 2026-01-25 12:00 | 122375 | | |
| 2026-01-25 11:00 | 131738 | | |
| 2026-01-25 10:00 | 139300 | | |
| 2026-01-25 09:00 | 144900 | | |
| 2026-01-25 08:00 | 147963 | | |
| 2026-01-25 07:00 | 147938 | | |
| 2026-01-25 06:00 | 147944 | | |
| 2026-01-25 05:00 | 150787 | | |
| 2026-01-25 04:00 | 153812 | | |
| 2026-01-25 03:00 | 153706 | | |
| 2026-01-25 02:00 | 151925 | | |
| 2026-01-25 01:00 | 151363 | | |
| 2026-01-25 00:00 | 152238 | | |
| 2026-01-24 23:00 | 153275 | | |
| 2026-01-24 22:00 | 153481 | | |
| 2026-01-24 21:00 | 153544 | | |
| 2026-01-24 20:00 | 155081 | | |
| 2026-01-24 19:00 | 155412 | | |
| 2026-01-24 18:00 | 146750 | | |
| 2026-01-24 17:00 | 126806 | | |
| 2026-01-24 16:00 | 106281 | | |
| 2026-01-24 15:00 | 97369 | | |
| 2026-01-24 14:00 | 101056 | | |
| 2026-01-24 13:00 | 111869 | | |
| 2026-01-24 12:00 | 125606 | | |
| 2026-01-24 11:00 | 138769 | | |
| 2026-01-24 10:00 | 147838 | | |
| 2026-01-24 09:00 | 151700 | | |
| 2026-01-24 08:00 | 152281 | | |
| 2026-01-24 07:00 | 153000 | | |
| 2026-01-24 06:00 | 156131 | | |
| 2026-01-24 05:00 | 160156 | | |
| 2026-01-24 04:00 | 161069 | | |
| 2026-01-24 03:00 | 157213 | | |
| 2026-01-24 02:00 | 151769 | | |
| 2026-01-24 01:00 | 149056 | | |
| 2026-01-24 00:00 | 149844 | | |
| 2026-01-23 23:00 | 152025 | | |
| 2026-01-23 22:00 | 153662 | | |
| 2026-01-23 21:00 | 154719 | | |
| 2026-01-23 20:00 | 155750 | | |
| 2026-01-23 19:00 | 154956 | | |
| 2026-01-23 18:00 | 149525 | | |
| 2026-01-23 17:00 | 138331 | | |
| 2026-01-23 16:00 | 123812 | | |
| 2026-01-23 15:00 | 113237 | | |
| 2026-01-23 14:00 | 112369 | | |
| 2026-01-23 13:00 | 119287 | | |
| 2026-01-23 12:00 | 128756 | | |
| 2026-01-23 11:00 | 137744 | | |
| 2026-01-23 10:00 | 144725 | | |
| 2026-01-23 09:00 | 148519 | | |
| 2026-01-23 08:00 | 148731 | | |
| 2026-01-23 07:00 | 144506 | | |
| 2026-01-23 06:00 | 135562 | | |
| 2026-01-23 05:00 | 124881 | | |
| 2026-01-23 04:00 | 116844 | | |
| 2026-01-23 03:00 | 113362 | | |
| 2026-01-23 02:00 | 111763 | | |
| 2026-01-23 01:00 | 108281 | | |
| 2026-01-23 00:00 | 104875 | | |
| 2026-01-22 23:00 | 106194 | | |
| 2026-01-22 22:00 | 112544 | | |
| 2026-01-22 21:00 | 122463 | | |
| 2026-01-22 20:00 | 134856 | | |
| 2026-01-22 19:00 | 145244 | | |
| 2026-01-22 18:00 | 146944 | | |
| 2026-01-22 17:00 | 139119 | | |
| 2026-01-22 16:00 | 129887 | | |
| 2026-01-22 15:00 | 127369 | | |
| 2026-01-22 14:00 | 131525 | | |
| 2026-01-22 13:00 | 137531 | | |
| 2026-01-22 12:00 | 142144 | | |
| 2026-01-22 11:00 | 145919 | | |
| 2026-01-22 10:00 | 150713 | | |
| 2026-01-22 09:00 | 155088 | | |
| 2026-01-22 08:00 | 155688 | | |
| 2026-01-22 07:00 | 153494 | | |
| 2026-01-22 06:00 | 149944 | | |
| 2026-01-22 05:00 | 139238 | | |
| 2026-01-22 04:00 | 120750 | | |
| 2026-01-22 03:00 | 106869 | | |
| 2026-01-22 02:00 | 105169 | | |
| 2026-01-22 01:00 | 113344 | | |
| 2026-01-22 00:00 | 128281 | | |
| 2026-01-21 23:00 | 143775 | | |
| 2026-01-21 22:00 | 153363 | | |
| 2026-01-21 21:00 | 158206 | | |
| 2026-01-21 20:00 | 160550 | | |
| 2026-01-21 19:00 | 158256 | | |
| 2026-01-21 18:00 | 149012 | | |
| 2026-01-21 17:00 | 133350 | | |
| 2026-01-21 16:00 | 119106 | | |
| 2026-01-21 15:00 | 115750 | | |
| 2026-01-21 14:00 | 121513 | | |
| 2026-01-21 13:00 | 128506 | | |
| 2026-01-21 12:00 | 132875 | | |
| 2026-01-21 11:00 | 136544 | | |
| 2026-01-21 10:00 | 143194 | | |
| 2026-01-21 09:00 | 149613 | | |
| 2026-01-21 08:00 | 149756 | | |
| 2026-01-21 07:00 | 145556 | | |
| 2026-01-21 06:00 | 142012 | | |
| 2026-01-21 05:00 | 139394 | | |
| 2026-01-21 04:00 | 136188 | | |
| 2026-01-21 03:00 | 133887 | | |
| 2026-01-21 02:00 | 136056 | | |
| 2026-01-21 01:00 | 142650 | | |
| 2026-01-21 00:00 | 148994 | | |
| 2026-01-20 23:00 | 151019 | | |
| 2026-01-20 22:00 | 149644 | | |
| 2026-01-20 21:00 | 149831 | | |
| 2026-01-20 20:00 | 153537 | | |
| 2026-01-20 19:00 | 157613 | | |
| 2026-01-20 18:00 | 156531 | | |
| 2026-01-20 17:00 | 144688 | | |
| 2026-01-20 16:00 | 127062 | | |
| 2026-01-20 15:00 | 117994 | | |
| 2026-01-20 14:00 | 121662 | | |
| 2026-01-20 13:00 | 131600 | | |
| 2026-01-20 12:00 | 142325 | | |
| 2026-01-20 11:00 | 149919 | | |
| 2026-01-20 10:00 | 152594 | | |
| 2026-01-20 09:00 | 152400 | | |
| 2026-01-20 08:00 | 151988 | | |
| 2026-01-20 07:00 | 150775 | | |
| 2026-01-20 06:00 | 145931 | | |
| 2026-01-20 05:00 | 137637 | | |
| 2026-01-20 04:00 | 129519 | | |
| 2026-01-20 03:00 | 124194 | | |
| 2026-01-20 02:00 | 122737 | | |
| 2026-01-20 01:00 | 125650 | | |
| 2026-01-20 00:00 | 131419 | | |
| 2026-01-19 23:00 | 136613 | | |
| 2026-01-19 22:00 | 139256 | | |
| 2026-01-19 21:00 | 140525 | | |
| 2026-01-19 20:00 | 143256 | | |
| 2026-01-19 19:00 | 147006 | | |
| 2026-01-19 18:00 | 144206 | | |
| 2026-01-19 17:00 | 131438 | | |
| 2026-01-19 16:00 | 118650 | | |