COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed |
| Date/Time (PST) | Discharge |
| 2026-01-09 15:00 | 116800 | | |
| 2026-01-09 14:00 | 116175 | | |
| 2026-01-09 13:00 | 120731 | | |
| 2026-01-09 12:00 | 127431 | | |
| 2026-01-09 11:00 | 134081 | | |
| 2026-01-09 10:00 | 140062 | | |
| 2026-01-09 09:00 | 145262 | | |
| 2026-01-09 08:00 | 146800 | | |
| 2026-01-09 07:00 | 143375 | | |
| 2026-01-09 06:00 | 138556 | | |
| 2026-01-09 05:00 | 134581 | | |
| 2026-01-09 04:00 | 131537 | | |
| 2026-01-09 03:00 | 131069 | | |
| 2026-01-09 02:00 | 133281 | | |
| 2026-01-09 01:00 | 136175 | | |
| 2026-01-09 00:00 | 139262 | | |
| 2026-01-08 23:00 | 142613 | | |
| 2026-01-08 22:00 | 145938 | | |
| 2026-01-08 21:00 | 149494 | | |
| 2026-01-08 20:00 | 152762 | | |
| 2026-01-08 19:00 | 153025 | | |
| 2026-01-08 18:00 | 146750 | | |
| 2026-01-08 17:00 | 134525 | | |
| 2026-01-08 16:00 | 121900 | | |
| 2026-01-08 15:00 | 114088 | | |
| 2026-01-08 14:00 | 113419 | | |
| 2026-01-08 13:00 | 119562 | | |
| 2026-01-08 12:00 | 130125 | | |
| 2026-01-08 11:00 | 140750 | | |
| 2026-01-08 10:00 | 146975 | | |
| 2026-01-08 09:00 | 148475 | | |
| 2026-01-08 08:00 | 148194 | | |
| 2026-01-08 07:00 | 148225 | | |
| 2026-01-08 06:00 | 148750 | | |
| 2026-01-08 05:00 | 148919 | | |
| 2026-01-08 04:00 | 146731 | | |
| 2026-01-08 03:00 | 141156 | | |
| 2026-01-08 02:00 | 135963 | | |
| 2026-01-08 01:00 | 135494 | | |
| 2026-01-08 00:00 | 138387 | | |
| 2026-01-07 23:00 | 140831 | | |
| 2026-01-07 22:00 | 141881 | | |
| 2026-01-07 21:00 | 142944 | | |
| 2026-01-07 20:00 | 145075 | | |
| 2026-01-07 19:00 | 146625 | | |
| 2026-01-07 18:00 | 144938 | | |
| 2026-01-07 17:00 | 142312 | | |
| 2026-01-07 16:00 | 143512 | | |
| 2026-01-07 15:00 | 147213 | | |
| 2026-01-07 14:00 | 149037 | | |
| 2026-01-07 13:00 | 149213 | | |
| 2026-01-07 12:00 | 149144 | | |
| 2026-01-07 11:00 | 148269 | | |
| 2026-01-07 10:00 | 147500 | | |
| 2026-01-07 09:00 | 147681 | | |
| 2026-01-07 08:00 | 147950 | | |
| 2026-01-07 07:00 | 148613 | | |
| 2026-01-07 06:00 | 149988 | | |
| 2026-01-07 05:00 | 149931 | | |
| 2026-01-07 04:00 | 147169 | | |
| 2026-01-07 03:00 | 144256 | | |
| 2026-01-07 02:00 | 143431 | | |
| 2026-01-07 01:00 | 143506 | | |
| 2026-01-07 00:00 | 142725 | | |
| 2026-01-06 23:00 | 141119 | | |
| 2026-01-06 22:00 | 141131 | | |
| 2026-01-06 21:00 | 143825 | | |
| 2026-01-06 20:00 | 145644 | | |
| 2026-01-06 19:00 | 145662 | | |
| 2026-01-06 18:00 | 146794 | | |
| 2026-01-06 17:00 | 147825 | | |
| 2026-01-06 16:00 | 146338 | | |
| 2026-01-06 15:00 | 144481 | | |
| 2026-01-06 14:00 | 144694 | | |
| 2026-01-06 13:00 | 145725 | | |
| 2026-01-06 12:00 | 145806 | | |
| 2026-01-06 11:00 | 145706 | | |
| 2026-01-06 10:00 | 146162 | | |
| 2026-01-06 09:00 | 145400 | | |
| 2026-01-06 08:00 | 143044 | | |
| 2026-01-06 07:00 | 142787 | | |
| 2026-01-06 06:00 | 147044 | | |
| 2026-01-06 05:00 | 152825 | | |
| 2026-01-06 04:00 | 156088 | | |
| 2026-01-06 03:00 | 157056 | | |
| 2026-01-06 02:00 | 156825 | | |
| 2026-01-06 01:00 | 152400 | | |
| 2026-01-06 00:00 | 144406 | | |
| 2026-01-05 23:00 | 141094 | | |
| 2026-01-05 22:00 | 144787 | | |
| 2026-01-05 21:00 | 150000 | | |
| 2026-01-05 20:00 | 154744 | | |
| 2026-01-05 19:00 | 157688 | | |
| 2026-01-05 18:00 | 155175 | | |
| 2026-01-05 17:00 | 148137 | | |
| 2026-01-05 16:00 | 140875 | | |
| 2026-01-05 15:00 | 136044 | | |
| 2026-01-05 14:00 | 134262 | | |
| 2026-01-05 13:00 | 133488 | | |
| 2026-01-05 12:00 | 131975 | | |
| 2026-01-05 11:00 | 131569 | | |
| 2026-01-05 10:00 | 133600 | | |
| 2026-01-05 09:00 | 136438 | | |
| 2026-01-05 08:00 | 137106 | | |
| 2026-01-05 07:00 | 131819 | | |
| 2026-01-05 06:00 | 121200 | | |
| 2026-01-05 05:00 | 112213 | | |
| 2026-01-05 04:00 | 109144 | | |
| 2026-01-05 03:00 | 110713 | | |
| 2026-01-05 02:00 | 112713 | | |
| 2026-01-05 01:00 | 109188 | | |
| 2026-01-05 00:00 | 100881 | | |
| 2026-01-04 23:00 | 97894 | | |
| 2026-01-04 22:00 | 107638 | | |
| 2026-01-04 21:00 | 125031 | | |
| 2026-01-04 20:00 | 137756 | | |
| 2026-01-04 19:00 | 140394 | | |
| 2026-01-04 18:00 | 135750 | | |
| 2026-01-04 17:00 | 127006 | | |
| 2026-01-04 16:00 | 116519 | | |
| 2026-01-04 15:00 | 106056 | | |
| 2026-01-04 14:00 | 96894 | | |
| 2026-01-04 13:00 | 90350 | | |
| 2026-01-04 12:00 | 87156 | | |
| 2026-01-04 11:00 | 86775 | | |
| 2026-01-04 10:00 | 86744 | | |
| 2026-01-04 09:00 | 85375 | | |
| 2026-01-04 08:00 | 84688 | | |
| 2026-01-04 07:00 | 87050 | | |
| 2026-01-04 06:00 | 91206 | | |
| 2026-01-04 05:00 | 93519 | | |
| 2026-01-04 04:00 | 92763 | | |
| 2026-01-04 03:00 | 92244 | | |
| 2026-01-04 02:00 | 94513 | | |
| 2026-01-04 01:00 | 98388 | | |
| 2026-01-04 00:00 | 103225 | | |
| 2026-01-03 23:00 | 109344 | | |
| 2026-01-03 22:00 | 115444 | | |
| 2026-01-03 21:00 | 120775 | | |
| 2026-01-03 20:00 | 126169 | | |
| 2026-01-03 19:00 | 130387 | | |
| 2026-01-03 18:00 | 130844 | | |
| 2026-01-03 17:00 | 127975 | | |
| 2026-01-03 16:00 | 123544 | | |
| 2026-01-03 15:00 | 118881 | | |
| 2026-01-03 14:00 | 115938 | | |
| 2026-01-03 13:00 | 115519 | | |
| 2026-01-03 12:00 | 117456 | | |
| 2026-01-03 11:00 | 122319 | | |
| 2026-01-03 10:00 | 129444 | | |
| 2026-01-03 09:00 | 134344 | | |
| 2026-01-03 08:00 | 133519 | | |
| 2026-01-03 07:00 | 129069 | | |
| 2026-01-03 06:00 | 122987 | | |
| 2026-01-03 05:00 | 116056 | | |
| 2026-01-03 04:00 | 111150 | | |
| 2026-01-03 03:00 | 109700 | | |
| 2026-01-03 02:00 | 110263 | | |
| 2026-01-03 01:00 | 111394 | | |
| 2026-01-03 00:00 | 113900 | | |
| 2026-01-02 23:00 | 119681 | | |
| 2026-01-02 22:00 | 127175 | | |
| 2026-01-02 21:00 | 132819 | | |
| 2026-01-02 20:00 | 136412 | | |
| 2026-01-02 19:00 | 138881 | | |
| 2026-01-02 18:00 | 138600 | | |
| 2026-01-02 17:00 | 134225 | | |
| 2026-01-02 16:00 | 128219 | | |
| 2026-01-02 15:00 | 124419 | | |
| 2026-01-02 14:00 | 123375 | | |
| 2026-01-02 13:00 | 123912 | | |
| 2026-01-02 12:00 | 125775 | | |
| 2026-01-02 11:00 | 127900 | | |
| 2026-01-02 10:00 | 129625 | | |
| 2026-01-02 09:00 | 132194 | | |
| 2026-01-02 08:00 | 134213 | | |
| 2026-01-02 07:00 | 131213 | | |
| 2026-01-02 06:00 | 122475 | | |
| 2026-01-02 05:00 | 112438 | | |
| 2026-01-02 04:00 | 105525 | | |
| 2026-01-02 03:00 | 102800 | | |
| 2026-01-02 02:00 | 102263 | | |
| 2026-01-02 01:00 | 102044 | | |
| 2026-01-02 00:00 | 103612 | | |
| 2026-01-01 23:00 | 108819 | | |
| 2026-01-01 22:00 | 115944 | | |
| 2026-01-01 21:00 | 123375 | | |
| 2026-01-01 20:00 | 131994 | | |
| 2026-01-01 19:00 | 141050 | | |
| 2026-01-01 18:00 | 147094 | | |
| 2026-01-01 17:00 | 148463 | | |
| 2026-01-01 16:00 | 146637 | | |
| 2026-01-01 15:00 | 143006 | | |
| 2026-01-01 14:00 | 139450 | | |
| 2026-01-01 13:00 | 138725 | | |
| 2026-01-01 12:00 | 140325 | | |
| 2026-01-01 11:00 | 141131 | | |
| 2026-01-01 10:00 | 139387 | | |
| 2026-01-01 09:00 | 135162 | | |
| 2026-01-01 08:00 | 130131 | | |
| 2026-01-01 07:00 | 127069 | | |
| 2026-01-01 06:00 | 126544 | | |
| 2026-01-01 05:00 | 125862 | | |
| 2026-01-01 04:00 | 123819 | | |
| 2026-01-01 03:00 | 122381 | | |
| 2026-01-01 02:00 | 121025 | | |
| 2026-01-01 01:00 | 115681 | | |
| 2026-01-01 00:00 | 107725 | | |
| 2025-12-31 23:00 | 105075 | | |
| 2025-12-31 22:00 | 110294 | | |
| 2025-12-31 21:00 | 118594 | | |
| 2025-12-31 20:00 | 126588 | | |
| 2025-12-31 19:00 | 132606 | | |
| 2025-12-31 18:00 | 134281 | | |
| 2025-12-31 17:00 | 133062 | | |
| 2025-12-31 16:00 | 132631 | | |
| 2025-12-31 15:00 | 132450 | | |
| 2025-12-31 14:00 | 132256 | | |
| 2025-12-31 13:00 | 136175 | | |
| 2025-12-31 12:00 | 143469 | | |
| 2025-12-31 11:00 | 146287 | | |
| 2025-12-31 10:00 | 142550 | | |
| 2025-12-31 09:00 | 137137 | | |
| 2025-12-31 08:00 | 131869 | | |
| 2025-12-31 07:00 | 126425 | | |
| 2025-12-31 06:00 | 123025 | | |
| 2025-12-31 05:00 | 123031 | | |
| 2025-12-31 04:00 | 123756 | | |
| 2025-12-31 03:00 | 122975 | | |
| 2025-12-31 02:00 | 121787 | | |
| 2025-12-31 01:00 | 122275 | | |
| 2025-12-31 00:00 | 127625 | | |
| 2025-12-30 23:00 | 139231 | | |
| 2025-12-30 22:00 | 151244 | | |
| 2025-12-30 21:00 | 156544 | | |
| 2025-12-30 20:00 | 156050 | | |
| 2025-12-30 19:00 | 153625 | | |
| 2025-12-30 18:00 | 147644 | | |
| 2025-12-30 17:00 | 136769 | | |
| 2025-12-30 16:00 | 126362 | | |
| 2025-12-30 15:00 | 121731 | | |
| 2025-12-30 14:00 | 123144 | | |
| 2025-12-30 13:00 | 128594 | | |
| 2025-12-30 12:00 | 134550 | | |
| 2025-12-30 11:00 | 138119 | | |
| 2025-12-30 10:00 | 140350 | | |
| 2025-12-30 09:00 | 141456 | | |
| 2025-12-30 08:00 | 138312 | | |
| 2025-12-30 07:00 | 132269 | | |
| 2025-12-30 06:00 | 129050 | | |
| 2025-12-30 05:00 | 129506 | | |
| 2025-12-30 04:00 | 129925 | | |
| 2025-12-30 03:00 | 128619 | | |
| 2025-12-30 02:00 | 126469 | | |
| 2025-12-30 01:00 | 123650 | | |
| 2025-12-30 00:00 | 120981 | | |
| 2025-12-29 23:00 | 122312 | | |
| 2025-12-29 22:00 | 130137 | | |
| 2025-12-29 21:00 | 141306 | | |
| 2025-12-29 20:00 | 149769 | | |
| 2025-12-29 19:00 | 152356 | | |
| 2025-12-29 18:00 | 148894 | | |
| 2025-12-29 17:00 | 137881 | | |
| 2025-12-29 16:00 | 121075 | | |