COLUMBIA--JOHN DAY DAM (JDAO3)
| Observed | Forecast/Trend Issued: 2026-05-09 15:16 PDT | ||
| Date/Time (PDT) | Inflow | Date/Time (PDT) | Inflow |
| 2026-05-10 00:00 | 230700 | 2026-05-10 11:00 | 250047.22 |
| 2026-05-09 00:00 | 223300 | 2026-05-10 17:00 | 257140.72 |
| 2026-05-08 00:00 | 237900 | 2026-05-10 23:00 | 264226.48 |
| 2026-05-07 00:00 | 228000 | 2026-05-11 05:00 | 268784.52 |
| 2026-05-06 00:00 | 250000 | 2026-05-11 11:00 | 270562.86 |
| 2026-05-05 00:00 | 223800 | 2026-05-11 17:00 | 270544.62 |
| 2026-05-04 00:00 | 245800 | 2026-05-11 23:00 | 270245.94 |
| 2026-05-03 00:00 | 236000 | 2026-05-12 05:00 | 270410.92 |
| 2026-05-02 00:00 | 242600 | 2026-05-12 11:00 | 271132.18 |
| 2026-05-01 00:00 | 230300 | 2026-05-12 17:00 | 272101.74 |
| 2026-04-30 00:00 | 225900 | 2026-05-12 23:00 | 273175.5 |
| 2026-05-13 05:00 | 274098.38 | ||
| 2026-05-13 11:00 | 274903.1 | ||
| 2026-05-13 17:00 | 275637.14 | ||
| 2026-05-13 23:00 | 276515.78 | ||
| 2026-05-14 05:00 | 277517.64 | ||
| 2026-05-14 11:00 | 278732.46 | ||
| 2026-05-14 17:00 | 280031.92 | ||
| 2026-05-14 23:00 | 281317.48 | ||
| 2026-05-15 05:00 | 282289.3 | ||
| 2026-05-15 11:00 | 282906.64 | ||
| 2026-05-15 17:00 | 283092.72 | ||
| 2026-05-15 23:00 | 282932.58 | ||
| 2026-05-16 05:00 | 282346.22 | ||
| 2026-05-16 11:00 | 281507.62 | ||
| 2026-05-16 17:00 | 280497.86 | ||
| 2026-05-16 23:00 | 279367.12 | ||
| 2026-05-17 05:00 | 278159.18 | ||
| 2026-05-17 11:00 | 276852.48 | ||
| 2026-05-17 17:00 | 275427.06 | ||
| 2026-05-17 23:00 | 273813.3 | ||
| 2026-05-18 05:00 | 272002.6 | ||
| 2026-05-18 11:00 | 269980.4 | ||
| 2026-05-18 17:00 | 267761.32 | ||
| 2026-05-18 23:00 | 265386.94 | ||
| 2026-05-19 05:00 | 262968.72 | ||