COLUMBIA--MCNARY DAM (MCDW1)
| Observed | Forecast/Trend Issued: 2026-04-23 16:25 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-04-23 00:00 | 224000 | 2026-04-23 23:00 | 232503.22 |
| 2026-04-22 00:00 | 216900 | 2026-04-24 05:00 | 235472.94 |
| 2026-04-21 00:00 | 215400 | 2026-04-24 11:00 | 240600.9 |
| 2026-04-20 00:00 | 194000 | 2026-04-24 17:00 | 247302.24 |
| 2026-04-19 00:00 | 220900 | 2026-04-24 23:00 | 250995.26 |
| 2026-04-18 00:00 | 219700 | 2026-04-25 05:00 | 252249.78 |
| 2026-04-17 00:00 | 214900 | 2026-04-25 11:00 | 252343.82 |
| 2026-04-16 00:00 | 204600 | 2026-04-25 17:00 | 252200.66 |
| 2026-04-15 00:00 | 207000 | 2026-04-25 23:00 | 252053.5 |
| 2026-04-14 00:00 | 210500 | 2026-04-26 05:00 | 251860.1 |
| 2026-04-13 00:00 | 200700 | 2026-04-26 11:00 | 251382.54 |
| 2026-04-26 17:00 | 250162.58 | ||
| 2026-04-26 23:00 | 248238.46 | ||
| 2026-04-27 05:00 | 245806.32 | ||
| 2026-04-27 11:00 | 243103.3 | ||
| 2026-04-27 17:00 | 240279.44 | ||
| 2026-04-27 23:00 | 237410.22 | ||
| 2026-04-28 05:00 | 234570.92 | ||
| 2026-04-28 11:00 | 231879.98 | ||
| 2026-04-28 17:00 | 229461.34 | ||
| 2026-04-28 23:00 | 227353.14 | ||
| 2026-04-29 05:00 | 225475 | ||
| 2026-04-29 11:00 | 223745.14 | ||
| 2026-04-29 17:00 | 222201.62 | ||
| 2026-04-29 23:00 | 220945.38 | ||
| 2026-04-30 05:00 | 220015.94 | ||
| 2026-04-30 11:00 | 219383.32 | ||
| 2026-04-30 17:00 | 219010.92 | ||
| 2026-04-30 23:00 | 218880.96 | ||
| 2026-05-01 05:00 | 218969.28 | ||
| 2026-05-01 11:00 | 219211.08 | ||
| 2026-05-01 17:00 | 219498.98 | ||
| 2026-05-01 23:00 | 219747.84 | ||
| 2026-05-02 05:00 | 219969.4 | ||
| 2026-05-02 11:00 | 220263.72 | ||
| 2026-05-02 17:00 | 220730.46 | ||
| 2026-05-02 23:00 | 221414.32 | ||
| 2026-05-03 05:00 | 222319.8 | ||