COLUMBIA--BLO ROCK ISLAND DAM (RISW1)
| Observed |
| Date/Time (PDT) | Discharge |
| 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 | | |
| 2026-04-01 16:00 | 113856 | | |
| 2026-04-01 15:00 | 121987 | | |
| 2026-04-01 14:00 | 122475 | | |
| 2026-04-01 13:00 | 122662 | | |
| 2026-04-01 12:00 | 125456 | | |
| 2026-04-01 11:00 | 131113 | | |
| 2026-04-01 10:00 | 140562 | | |
| 2026-04-01 09:00 | 151113 | | |
| 2026-04-01 08:00 | 157625 | | |
| 2026-04-01 07:00 | 159287 | | |
| 2026-04-01 06:00 | 159175 | | |
| 2026-04-01 05:00 | 158619 | | |
| 2026-04-01 04:00 | 155775 | | |
| 2026-04-01 03:00 | 149988 | | |
| 2026-04-01 02:00 | 145819 | | |
| 2026-04-01 01:00 | 147969 | | |
| 2026-04-01 00:00 | 155125 | | |
| 2026-03-31 23:00 | 161956 | | |
| 2026-03-31 22:00 | 163488 | | |
| 2026-03-31 21:00 | 158950 | | |
| 2026-03-31 20:00 | 152688 | | |
| 2026-03-31 19:00 | 148475 | | |
| 2026-03-31 18:00 | 144981 | | |
| 2026-03-31 17:00 | 139675 | | |
| 2026-03-31 16:00 | 132556 | | |
| 2026-03-31 15:00 | 125831 | | |
| 2026-03-31 14:00 | 123019 | | |
| 2026-03-31 13:00 | 124981 | | |
| 2026-03-31 12:00 | 129631 | | |
| 2026-03-31 11:00 | 137025 | | |
| 2026-03-31 10:00 | 148438 | | |
| 2026-03-31 09:00 | 162169 | | |
| 2026-03-31 08:00 | 174050 | | |
| 2026-03-31 07:00 | 178475 | | |
| 2026-03-31 06:00 | 171463 | | |
| 2026-03-31 05:00 | 158575 | | |
| 2026-03-31 04:00 | 150219 | | |
| 2026-03-31 03:00 | 148137 | | |
| 2026-03-31 02:00 | 149137 | | |
| 2026-03-31 01:00 | 154463 | | |
| 2026-03-31 00:00 | 165188 | | |
| 2026-03-30 23:00 | 175250 | | |
| 2026-03-30 22:00 | 176531 | | |
| 2026-03-30 21:00 | 168556 | | |
| 2026-03-30 20:00 | 156988 | | |
| 2026-03-30 19:00 | 145706 | | |
| 2026-03-30 18:00 | 136463 | | |
| 2026-03-30 17:00 | 131431 | | |
| 2026-03-30 16:00 | 129944 | | |
| 2026-03-30 15:00 | 128975 | | |
| 2026-03-30 14:00 | 129838 | | |
| 2026-03-30 13:00 | 135281 | | |
| 2026-03-30 12:00 | 142731 | | |
| 2026-03-30 11:00 | 148931 | | |
| 2026-03-30 10:00 | 154463 | | |
| 2026-03-30 09:00 | 159275 | | |
| 2026-03-30 08:00 | 161400 | | |
| 2026-03-30 07:00 | 160756 | | |
| 2026-03-30 06:00 | 159262 | | |
| 2026-03-30 05:00 | 158000 | | |
| 2026-03-30 04:00 | 156000 | | |
| 2026-03-30 03:00 | 152588 | | |
| 2026-03-30 02:00 | 149394 | | |
| 2026-03-30 01:00 | 146950 | | |
| 2026-03-30 00:00 | 142869 | | |
| 2026-03-29 23:00 | 137225 | | |
| 2026-03-29 22:00 | 132881 | | |
| 2026-03-29 21:00 | 131094 | | |
| 2026-03-29 20:00 | 133125 | | |
| 2026-03-29 19:00 | 137256 | | |
| 2026-03-29 18:00 | 137912 | | |
| 2026-03-29 17:00 | 135956 | | |
| 2026-03-29 16:00 | 136287 | | |
| 2026-03-29 15:00 | 135931 | | |
| 2026-03-29 14:00 | 127706 | | |
| 2026-03-29 13:00 | 114300 | | |
| 2026-03-29 12:00 | 106956 | | |
| 2026-03-29 11:00 | 109144 | | |
| 2026-03-29 10:00 | 115231 | | |
| 2026-03-29 09:00 | 120950 | | |
| 2026-03-29 08:00 | 124700 | | |
| 2026-03-29 07:00 | 126275 | | |
| 2026-03-29 06:00 | 126606 | | |
| 2026-03-29 05:00 | 124894 | | |
| 2026-03-29 04:00 | 120481 | | |
| 2026-03-29 03:00 | 117631 | | |
| 2026-03-29 02:00 | 121369 | | |
| 2026-03-29 01:00 | 130369 | | |
| 2026-03-29 00:00 | 139537 | | |
| 2026-03-28 23:00 | 145856 | | |
| 2026-03-28 22:00 | 148825 | | |
| 2026-03-28 21:00 | 148762 | | |
| 2026-03-28 20:00 | 145044 | | |
| 2026-03-28 19:00 | 137825 | | |
| 2026-03-28 18:00 | 131031 | | |
| 2026-03-28 17:00 | 128769 | | |