COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2026-09-29 07:00 | 38438 | | |
| 2026-09-29 06:00 | 34856 | | |
| 2026-09-29 05:00 | 29775 | | |
| 2026-09-29 04:00 | 26644 | | |
| 2026-09-29 03:00 | 26462 | | |
| 2026-09-29 02:00 | 28181 | | |
| 2026-09-29 01:00 | 30094 | | |
| 2026-09-29 00:00 | 31562 | | |
| 2026-09-28 23:00 | 35112 | | |
| 2026-09-28 22:00 | 43069 | | |
| 2026-09-28 21:00 | 54112 | | |
| 2026-09-28 20:00 | 63731 | | |
| 2026-09-28 19:00 | 65300 | | |
| 2026-09-28 18:00 | 57250 | | |
| 2026-09-28 17:00 | 47225 | | |
| 2026-09-28 16:00 | 41806 | | |
| 2026-09-28 15:00 | 40425 | | |
| 2026-09-28 14:00 | 41181 | | |
| 2026-09-28 13:00 | 43925 | | |
| 2026-09-28 12:00 | 49212 | | |
| 2026-09-28 11:00 | 57581 | | |
| 2026-09-28 10:00 | 68256 | | |
| 2026-09-28 09:00 | 78456 | | |
| 2026-09-28 08:00 | 84438 | | |
| 2026-09-28 07:00 | 83506 | | |
| 2026-09-28 06:00 | 76044 | | |
| 2026-09-28 05:00 | 66287 | | |
| 2026-09-28 04:00 | 59425 | | |
| 2026-09-28 03:00 | 56794 | | |
| 2026-09-28 02:00 | 56631 | | |
| 2026-09-28 01:00 | 58081 | | |
| 2026-09-28 00:00 | 61319 | | |
| 2026-09-27 23:00 | 66425 | | |
| 2026-09-27 22:00 | 72581 | | |
| 2026-09-27 21:00 | 77513 | | |
| 2026-09-27 20:00 | 78369 | | |
| 2026-09-27 19:00 | 73263 | | |
| 2026-09-27 18:00 | 64331 | | |
| 2026-09-27 17:00 | 57081 | | |
| 2026-09-27 16:00 | 54044 | | |
| 2026-09-27 15:00 | 53550 | | |
| 2026-09-27 14:00 | 54006 | | |
| 2026-09-27 13:00 | 55212 | | |
| 2026-09-27 12:00 | 57263 | | |
| 2026-09-27 11:00 | 59837 | | |
| 2026-09-27 10:00 | 62337 | | |
| 2026-09-27 09:00 | 63606 | | |
| 2026-09-27 08:00 | 61469 | | |
| 2026-09-27 07:00 | 55837 | | |
| 2026-09-27 06:00 | 50288 | | |
| 2026-09-27 05:00 | 48081 | | |
| 2026-09-27 04:00 | 50062 | | |
| 2026-09-27 03:00 | 55869 | | |
| 2026-09-27 02:00 | 65050 | | |
| 2026-09-27 01:00 | 76475 | | |
| 2026-09-27 00:00 | 86969 | | |
| 2026-09-26 23:00 | 92694 | | |
| 2026-09-26 22:00 | 93175 | | |
| 2026-09-26 21:00 | 91956 | | |
| 2026-09-26 20:00 | 91531 | | |
| 2026-09-26 19:00 | 90162 | | |
| 2026-09-26 18:00 | 84112 | | |
| 2026-09-26 17:00 | 72612 | | |
| 2026-09-26 16:00 | 60306 | | |
| 2026-09-26 15:00 | 52844 | | |
| 2026-09-26 14:00 | 51337 | | |
| 2026-09-26 13:00 | 53125 | | |
| 2026-09-26 12:00 | 56381 | | |
| 2026-09-26 11:00 | 60825 | | |
| 2026-09-26 10:00 | 65056 | | |
| 2026-09-26 09:00 | 66688 | | |
| 2026-09-26 08:00 | 65019 | | |
| 2026-09-26 07:00 | 60569 | | |
| 2026-09-26 06:00 | 53144 | | |
| 2026-09-26 05:00 | 44856 | | |
| 2026-09-26 04:00 | 40700 | | |
| 2026-09-26 03:00 | 42356 | | |
| 2026-09-26 02:00 | 47031 | | |
| 2026-09-26 01:00 | 51681 | | |
| 2026-09-26 00:00 | 54506 | | |
| 2026-09-25 23:00 | 55337 | | |
| 2026-09-25 22:00 | 55200 | | |
| 2026-09-25 21:00 | 54844 | | |
| 2026-09-25 20:00 | 55000 | | |
| 2026-09-25 19:00 | 55331 | | |
| 2026-09-25 18:00 | 53194 | | |
| 2026-09-25 17:00 | 48081 | | |
| 2026-09-25 16:00 | 44150 | | |
| 2026-09-25 15:00 | 43600 | | |
| 2026-09-25 14:00 | 43487 | | |
| 2026-09-25 13:00 | 41737 | | |
| 2026-09-25 12:00 | 39469 | | |
| 2026-09-25 11:00 | 37606 | | |
| 2026-09-25 10:00 | 36694 | | |
| 2026-09-25 09:00 | 38081 | | |
| 2026-09-25 08:00 | 41375 | | |
| 2026-09-25 07:00 | 42831 | | |
| 2026-09-25 06:00 | 39506 | | |
| 2026-09-25 05:00 | 33500 | | |
| 2026-09-25 04:00 | 30056 | | |
| 2026-09-25 03:00 | 32631 | | |
| 2026-09-25 02:00 | 39094 | | |
| 2026-09-25 01:00 | 44644 | | |
| 2026-09-25 00:00 | 49600 | | |
| 2026-09-24 23:00 | 56625 | | |
| 2026-09-24 22:00 | 64050 | | |
| 2026-09-24 21:00 | 69825 | | |
| 2026-09-24 20:00 | 74056 | | |
| 2026-09-24 19:00 | 76225 | | |
| 2026-09-24 18:00 | 75519 | | |
| 2026-09-24 17:00 | 71425 | | |
| 2026-09-24 16:00 | 65419 | | |
| 2026-09-24 15:00 | 62625 | | |
| 2026-09-24 14:00 | 65250 | | |
| 2026-09-24 13:00 | 68950 | | |
| 2026-09-24 12:00 | 70794 | | |
| 2026-09-24 11:00 | 72206 | | |
| 2026-09-24 10:00 | 74088 | | |
| 2026-09-24 09:00 | 76894 | | |
| 2026-09-24 08:00 | 81244 | | |
| 2026-09-24 07:00 | 82987 | | |
| 2026-09-24 06:00 | 76256 | | |
| 2026-09-24 05:00 | 63875 | | |
| 2026-09-24 04:00 | 54462 | | |
| 2026-09-24 03:00 | 51812 | | |
| 2026-09-24 02:00 | 53019 | | |
| 2026-09-24 01:00 | 54300 | | |
| 2026-09-24 00:00 | 57094 | | |
| 2026-09-23 23:00 | 63763 | | |
| 2026-09-23 22:00 | 71575 | | |
| 2026-09-23 21:00 | 78094 | | |
| 2026-09-23 20:00 | 82681 | | |
| 2026-09-23 19:00 | 83369 | | |
| 2026-09-23 18:00 | 79906 | | |
| 2026-09-23 17:00 | 73969 | | |
| 2026-09-23 16:00 | 66831 | | |
| 2026-09-23 15:00 | 59850 | | |
| 2026-09-23 14:00 | 54500 | | |
| 2026-09-23 13:00 | 50956 | | |
| 2026-09-23 12:00 | 48038 | | |
| 2026-09-23 11:00 | 46263 | | |
| 2026-09-23 10:00 | 47425 | | |
| 2026-09-23 09:00 | 51319 | | |
| 2026-09-23 08:00 | 56188 | | |
| 2026-09-23 07:00 | 58444 | | |
| 2026-09-23 06:00 | 54069 | | |
| 2026-09-23 05:00 | 45119 | | |
| 2026-09-23 04:00 | 38525 | | |
| 2026-09-23 03:00 | 37519 | | |
| 2026-09-23 02:00 | 40800 | | |
| 2026-09-23 01:00 | 46594 | | |
| 2026-09-23 00:00 | 52281 | | |
| 2026-09-22 23:00 | 55475 | | |
| 2026-09-22 22:00 | 57225 | | |
| 2026-09-22 21:00 | 59769 | | |
| 2026-09-22 20:00 | 63425 | | |
| 2026-09-22 19:00 | 64763 | | |
| 2026-09-22 18:00 | 58594 | | |
| 2026-09-22 17:00 | 47144 | | |
| 2026-09-22 16:00 | 39062 | | |
| 2026-09-22 15:00 | 36994 | | |
| 2026-09-22 14:00 | 37050 | | |
| 2026-09-22 13:00 | 37362 | | |
| 2026-09-22 12:00 | 38006 | | |
| 2026-09-22 11:00 | 38181 | | |
| 2026-09-22 10:00 | 38837 | | |
| 2026-09-22 09:00 | 42494 | | |
| 2026-09-22 08:00 | 49150 | | |
| 2026-09-22 07:00 | 55138 | | |
| 2026-09-22 06:00 | 55237 | | |
| 2026-09-22 05:00 | 49269 | | |
| 2026-09-22 04:00 | 43925 | | |
| 2026-09-22 03:00 | 43013 | | |
| 2026-09-22 02:00 | 44881 | | |
| 2026-09-22 01:00 | 47862 | | |
| 2026-09-22 00:00 | 50938 | | |
| 2026-09-21 23:00 | 53581 | | |
| 2026-09-21 22:00 | 55712 | | |
| 2026-09-21 21:00 | 58419 | | |
| 2026-09-21 20:00 | 63631 | | |
| 2026-09-21 19:00 | 69506 | | |
| 2026-09-21 18:00 | 70919 | | |
| 2026-09-21 17:00 | 65881 | | |
| 2026-09-21 16:00 | 57294 | | |
| 2026-09-21 15:00 | 49900 | | |
| 2026-09-21 14:00 | 45931 | | |
| 2026-09-21 13:00 | 43600 | | |
| 2026-09-21 12:00 | 41337 | | |
| 2026-09-21 11:00 | 39275 | | |
| 2026-09-21 10:00 | 37362 | | |
| 2026-09-21 09:00 | 36656 | | |
| 2026-09-21 08:00 | 38244 | | |
| 2026-09-21 07:00 | 39975 | | |
| 2026-09-21 06:00 | 39450 | | |
| 2026-09-21 05:00 | 37725 | | |
| 2026-09-21 04:00 | 36913 | | |
| 2026-09-21 03:00 | 37956 | | |
| 2026-09-21 02:00 | 40987 | | |
| 2026-09-21 01:00 | 45156 | | |
| 2026-09-21 00:00 | 49669 | | |
| 2026-09-20 23:00 | 55456 | | |
| 2026-09-20 22:00 | 63237 | | |
| 2026-09-20 21:00 | 71056 | | |
| 2026-09-20 20:00 | 76456 | | |
| 2026-09-20 19:00 | 78281 | | |
| 2026-09-20 18:00 | 75681 | | |
| 2026-09-20 17:00 | 69088 | | |
| 2026-09-20 16:00 | 59794 | | |
| 2026-09-20 15:00 | 49038 | | |
| 2026-09-20 14:00 | 39950 | | |
| 2026-09-20 13:00 | 35250 | | |
| 2026-09-20 12:00 | 34500 | | |
| 2026-09-20 11:00 | 35931 | | |
| 2026-09-20 10:00 | 37188 | | |
| 2026-09-20 09:00 | 37175 | | |
| 2026-09-20 08:00 | 37419 | | |
| 2026-09-20 07:00 | 38581 | | |
| 2026-09-20 06:00 | 39244 | | |
| 2026-09-20 05:00 | 38475 | | |
| 2026-09-20 04:00 | 37337 | | |
| 2026-09-20 03:00 | 37987 | | |
| 2026-09-20 02:00 | 40644 | | |
| 2026-09-20 01:00 | 43337 | | |
| 2026-09-20 00:00 | 45375 | | |
| 2026-09-19 23:00 | 48538 | | |
| 2026-09-19 22:00 | 54644 | | |
| 2026-09-19 21:00 | 62456 | | |
| 2026-09-19 20:00 | 68025 | | |
| 2026-09-19 19:00 | 68056 | | |
| 2026-09-19 18:00 | 62169 | | |
| 2026-09-19 17:00 | 52913 | | |
| 2026-09-19 16:00 | 44006 | | |
| 2026-09-19 15:00 | 38275 | | |
| 2026-09-19 14:00 | 36500 | | |
| 2026-09-19 13:00 | 37569 | | |
| 2026-09-19 12:00 | 39288 | | |
| 2026-09-19 11:00 | 39681 | | |
| 2026-09-19 10:00 | 38250 | | |
| 2026-09-19 09:00 | 35587 | | |
| 2026-09-19 08:00 | 33319 | | |
| 2026-09-19 07:00 | 33337 | | |
| 2026-09-19 06:00 | 35188 | | |
| 2026-09-19 05:00 | 36562 | | |
| 2026-09-19 04:00 | 36525 | | |
| 2026-09-19 03:00 | 36606 | | |
| 2026-09-19 02:00 | 37981 | | |
| 2026-09-19 01:00 | 39094 | | |
| 2026-09-19 00:00 | 38800 | | |
| 2026-09-18 23:00 | 38562 | | |
| 2026-09-18 22:00 | 40288 | | |
| 2026-09-18 21:00 | 45350 | | |
| 2026-09-18 20:00 | 52962 | | |
| 2026-09-18 19:00 | 58106 | | |
| 2026-09-18 18:00 | 55994 | | |
| 2026-09-18 17:00 | 48931 | | |