COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 2026-04-12 13:00 | 175531 | | |
| 2026-04-12 12:00 | 178881 | | |
| 2026-04-12 11:00 | 180000 | | |
| 2026-04-12 10:00 | 180831 | | |
| 2026-04-12 09:00 | 182131 | | |
| 2026-04-12 08:00 | 183056 | | |
| 2026-04-12 07:00 | 183056 | | |
| 2026-04-12 06:00 | 182713 | | |
| 2026-04-12 05:00 | 182631 | | |
| 2026-04-12 04:00 | 182650 | | |
| 2026-04-12 03:00 | 180387 | | |
| 2026-04-12 02:00 | 173531 | | |
| 2026-04-12 01:00 | 163688 | | |
| 2026-04-12 00:00 | 154975 | | |
| 2026-04-11 23:00 | 151150 | | |
| 2026-04-11 22:00 | 151250 | | |
| 2026-04-11 21:00 | 145944 | | |
| 2026-04-11 20:00 | 125850 | | |
| 2026-04-11 19:00 | 93481 | | |
| 2026-04-11 18:00 | 61163 | | |
| 2026-04-11 17:00 | 40644 | | |
| 2026-04-11 16:00 | 39312 | | |
| 2026-04-11 15:00 | 57206 | | |
| 2026-04-11 14:00 | 82231 | | |
| 2026-04-11 13:00 | 101838 | | |
| 2026-04-11 12:00 | 114750 | | |
| 2026-04-11 11:00 | 122081 | | |
| 2026-04-11 10:00 | 125394 | | |
| 2026-04-11 09:00 | 130438 | | |
| 2026-04-11 08:00 | 139319 | | |
| 2026-04-11 07:00 | 148831 | | |
| 2026-04-11 06:00 | 155919 | | |
| 2026-04-11 05:00 | 159719 | | |
| 2026-04-11 04:00 | 161225 | | |
| 2026-04-11 03:00 | 161400 | | |
| 2026-04-11 02:00 | 161050 | | |
| 2026-04-11 01:00 | 160838 | | |
| 2026-04-11 00:00 | 159444 | | |
| 2026-04-10 23:00 | 156000 | | |
| 2026-04-10 22:00 | 150506 | | |
| 2026-04-10 21:00 | 138575 | | |
| 2026-04-10 20:00 | 116725 | | |
| 2026-04-10 19:00 | 89825 | | |
| 2026-04-10 18:00 | 67050 | | |
| 2026-04-10 17:00 | 58269 | | |
| 2026-04-10 16:00 | 69987 | | |
| 2026-04-10 15:00 | 97500 | | |
| 2026-04-10 14:00 | 125162 | | |
| 2026-04-10 13:00 | 141644 | | |
| 2026-04-10 12:00 | 150000 | | |
| 2026-04-10 11:00 | 156100 | | |
| 2026-04-10 10:00 | 159775 | | |
| 2026-04-10 09:00 | 159300 | | |
| 2026-04-10 08:00 | 154569 | | |
| 2026-04-10 07:00 | 148312 | | |
| 2026-04-10 06:00 | 144019 | | |
| 2026-04-10 05:00 | 142381 | | |
| 2026-04-10 04:00 | 143213 | | |
| 2026-04-10 03:00 | 146056 | | |
| 2026-04-10 02:00 | 148050 | | |
| 2026-04-10 01:00 | 145688 | | |
| 2026-04-10 00:00 | 138562 | | |
| 2026-04-09 23:00 | 128994 | | |
| 2026-04-09 22:00 | 118906 | | |
| 2026-04-09 21:00 | 109575 | | |
| 2026-04-09 20:00 | 101631 | | |
| 2026-04-09 19:00 | 95731 | | |
| 2026-04-09 18:00 | 93631 | | |
| 2026-04-09 17:00 | 94756 | | |
| 2026-04-09 16:00 | 96562 | | |
| 2026-04-09 15:00 | 99144 | | |
| 2026-04-09 14:00 | 102619 | | |
| 2026-04-09 13:00 | 104638 | | |
| 2026-04-09 12:00 | 105400 | | |
| 2026-04-09 11:00 | 107700 | | |
| 2026-04-09 10:00 | 110219 | | |
| 2026-04-09 09:00 | 112500 | | |
| 2026-04-09 08:00 | 120150 | | |
| 2026-04-09 07:00 | 126912 | | |
| 2026-04-09 06:00 | 117494 | | |
| 2026-04-09 05:00 | 98331 | | |
| 2026-04-09 04:00 | 89088 | | |
| 2026-04-09 03:00 | 95631 | | |
| 2026-04-09 02:00 | 109781 | | |
| 2026-04-09 01:00 | 120150 | | |
| 2026-04-09 00:00 | 124419 | | |
| 2026-04-08 23:00 | 128875 | | |
| 2026-04-08 22:00 | 134762 | | |
| 2026-04-08 21:00 | 133219 | | |
| 2026-04-08 20:00 | 114662 | | |
| 2026-04-08 19:00 | 85694 | | |
| 2026-04-08 18:00 | 64950 | | |
| 2026-04-08 17:00 | 58719 | | |
| 2026-04-08 16:00 | 62763 | | |
| 2026-04-08 15:00 | 77263 | | |
| 2026-04-08 14:00 | 98312 | | |
| 2026-04-08 13:00 | 114994 | | |
| 2026-04-08 12:00 | 124525 | | |
| 2026-04-08 11:00 | 131994 | | |
| 2026-04-08 10:00 | 139650 | | |
| 2026-04-08 09:00 | 146900 | | |
| 2026-04-08 08:00 | 151912 | | |
| 2026-04-08 07:00 | 150850 | | |
| 2026-04-08 06:00 | 141294 | | |
| 2026-04-08 05:00 | 127787 | | |
| 2026-04-08 04:00 | 118450 | | |
| 2026-04-08 03:00 | 116737 | | |
| 2026-04-08 02:00 | 122550 | | |
| 2026-04-08 01:00 | 132675 | | |
| 2026-04-08 00:00 | 140412 | | |
| 2026-04-07 23:00 | 143544 | | |
| 2026-04-07 22:00 | 143619 | | |
| 2026-04-07 21:00 | 137675 | | |
| 2026-04-07 20:00 | 120381 | | |
| 2026-04-07 19:00 | 92550 | | |
| 2026-04-07 18:00 | 65900 | | |
| 2026-04-07 17:00 | 53975 | | |
| 2026-04-07 16:00 | 55981 | | |
| 2026-04-07 15:00 | 60900 | | |
| 2026-04-07 14:00 | 65088 | | |
| 2026-04-07 13:00 | 72706 | | |
| 2026-04-07 12:00 | 84650 | | |
| 2026-04-07 11:00 | 97269 | | |
| 2026-04-07 10:00 | 106550 | | |
| 2026-04-07 09:00 | 111069 | | |
| 2026-04-07 08:00 | 113300 | | |
| 2026-04-07 07:00 | 113638 | | |
| 2026-04-07 06:00 | 109650 | | |
| 2026-04-07 05:00 | 104688 | | |
| 2026-04-07 04:00 | 104956 | | |
| 2026-04-07 03:00 | 109994 | | |
| 2026-04-07 02:00 | 113737 | | |
| 2026-04-07 01:00 | 112900 | | |
| 2026-04-07 00:00 | 111631 | | |
| 2026-04-06 23:00 | 115700 | | |
| 2026-04-06 22:00 | 123619 | | |
| 2026-04-06 21:00 | 130325 | | |
| 2026-04-06 20:00 | 135350 | | |
| 2026-04-06 19:00 | 137338 | | |
| 2026-04-06 18:00 | 133412 | | |
| 2026-04-06 17:00 | 127688 | | |
| 2026-04-06 16:00 | 123963 | | |
| 2026-04-06 15:00 | 120806 | | |
| 2026-04-06 14:00 | 119625 | | |
| 2026-04-06 13:00 | 121681 | | |
| 2026-04-06 12:00 | 123731 | | |
| 2026-04-06 11:00 | 125256 | | |
| 2026-04-06 10:00 | 130025 | | |
| 2026-04-06 09:00 | 136838 | | |
| 2026-04-06 08:00 | 137856 | | |
| 2026-04-06 07:00 | 130037 | | |
| 2026-04-06 06:00 | 119562 | | |
| 2026-04-06 05:00 | 112956 | | |
| 2026-04-06 04:00 | 111031 | | |
| 2026-04-06 03:00 | 112169 | | |
| 2026-04-06 02:00 | 116875 | | |
| 2026-04-06 01:00 | 124287 | | |
| 2026-04-06 00:00 | 130463 | | |
| 2026-04-05 23:00 | 134919 | | |
| 2026-04-05 22:00 | 137881 | | |
| 2026-04-05 21:00 | 135944 | | |
| 2026-04-05 20:00 | 128169 | | |
| 2026-04-05 19:00 | 117144 | | |
| 2026-04-05 18:00 | 105275 | | |
| 2026-04-05 17:00 | 95925 | | |
| 2026-04-05 16:00 | 93669 | | |
| 2026-04-05 15:00 | 98294 | | |
| 2026-04-05 14:00 | 104025 | | |
| 2026-04-05 13:00 | 107794 | | |
| 2026-04-05 12:00 | 111569 | | |
| 2026-04-05 11:00 | 117075 | | |
| 2026-04-05 10:00 | 122950 | | |
| 2026-04-05 09:00 | 128144 | | |
| 2026-04-05 08:00 | 134062 | | |
| 2026-04-05 07:00 | 140181 | | |
| 2026-04-05 06:00 | 141562 | | |
| 2026-04-05 05:00 | 134387 | | |
| 2026-04-05 04:00 | 124463 | | |
| 2026-04-05 03:00 | 123237 | | |
| 2026-04-05 02:00 | 132969 | | |
| 2026-04-05 01:00 | 145188 | | |
| 2026-04-05 00:00 | 151244 | | |
| 2026-04-04 23:00 | 149981 | | |
| 2026-04-04 22:00 | 147613 | | |
| 2026-04-04 21:00 | 146037 | | |
| 2026-04-04 20:00 | 139606 | | |
| 2026-04-04 19:00 | 128019 | | |
| 2026-04-04 18:00 | 116713 | | |
| 2026-04-04 17:00 | 108575 | | |
| 2026-04-04 16:00 | 105181 | | |
| 2026-04-04 15:00 | 107019 | | |
| 2026-04-04 14:00 | 111281 | | |
| 2026-04-04 13:00 | 114562 | | |
| 2026-04-04 12:00 | 116188 | | |
| 2026-04-04 11:00 | 117694 | | |
| 2026-04-04 10:00 | 119812 | | |
| 2026-04-04 09:00 | 121938 | | |
| 2026-04-04 08:00 | 123744 | | |
| 2026-04-04 07:00 | 124281 | | |
| 2026-04-04 06:00 | 121975 | | |
| 2026-04-04 05:00 | 117438 | | |
| 2026-04-04 04:00 | 114138 | | |
| 2026-04-04 03:00 | 115987 | | |
| 2026-04-04 02:00 | 123013 | | |
| 2026-04-04 01:00 | 130988 | | |
| 2026-04-04 00:00 | 137606 | | |
| 2026-04-03 23:00 | 143344 | | |
| 2026-04-03 22:00 | 146281 | | |
| 2026-04-03 21:00 | 144475 | | |
| 2026-04-03 20:00 | 139537 | | |
| 2026-04-03 19:00 | 131719 | | |
| 2026-04-03 18:00 | 121681 | | |
| 2026-04-03 17:00 | 115119 | | |
| 2026-04-03 16:00 | 114419 | | |
| 2026-04-03 15:00 | 115831 | | |
| 2026-04-03 14:00 | 117638 | | |
| 2026-04-03 13:00 | 120725 | | |
| 2026-04-03 12:00 | 123550 | | |
| 2026-04-03 11:00 | 123513 | | |
| 2026-04-03 10:00 | 123619 | | |
| 2026-04-03 09:00 | 130069 | | |
| 2026-04-03 08:00 | 140363 | | |
| 2026-04-03 07:00 | 143256 | | |
| 2026-04-03 06:00 | 133113 | | |
| 2026-04-03 05:00 | 117656 | | |
| 2026-04-03 04:00 | 108763 | | |
| 2026-04-03 03:00 | 109806 | | |
| 2026-04-03 02:00 | 116381 | | |
| 2026-04-03 01:00 | 124325 | | |
| 2026-04-03 00:00 | 132581 | | |
| 2026-04-02 23:00 | 141181 | | |
| 2026-04-02 22:00 | 148012 | | |
| 2026-04-02 21:00 | 150269 | | |
| 2026-04-02 20:00 | 145825 | | |
| 2026-04-02 19:00 | 130375 | | |
| 2026-04-02 18:00 | 108250 | | |
| 2026-04-02 17:00 | 96950 | | |
| 2026-04-02 16:00 | 103475 | | |
| 2026-04-02 15:00 | 116856 | | |
| 2026-04-02 14:00 | 124794 | | |
| 2026-04-02 13:00 | 123219 | | |
| 2026-04-02 12:00 | 118556 | | |
| 2026-04-02 11:00 | 119537 | | |
| 2026-04-02 10:00 | 125644 | | |
| 2026-04-02 09:00 | 132044 | | |
| 2026-04-02 08:00 | 135081 | | |
| 2026-04-02 07:00 | 128569 | | |
| 2026-04-02 06:00 | 113119 | | |
| 2026-04-02 05:00 | 100888 | | |
| 2026-04-02 04:00 | 98069 | | |
| 2026-04-02 03:00 | 99850 | | |
| 2026-04-02 02:00 | 101275 | | |
| 2026-04-02 01:00 | 100925 | | |
| 2026-04-02 00:00 | 99419 | | |
| 2026-04-01 23:00 | 99463 | | |
| 2026-04-01 22:00 | 107256 | | |
| 2026-04-01 21:00 | 122237 | | |
| 2026-04-01 20:00 | 127394 | | |
| 2026-04-01 19:00 | 113425 | | |
| 2026-04-01 18:00 | 98319 | | |
| 2026-04-01 17:00 | 100556 | | |