COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed | Forecast/Trend Issued: 2026-11-14 10:15 PST | ||
| Date/Time (PST) | Inflow | Date/Time (PST) | Inflow |
| 2026-11-14 00:00 | 65600 | 2026-11-14 22:00 | 67672.17 |
| 2026-11-13 00:00 | 69200 | 2026-11-15 04:00 | 68058.41 |
| 2026-11-12 00:00 | 68400 | 2026-11-15 10:00 | 68471.81 |
| 2026-11-11 00:00 | 75500 | 2026-11-15 16:00 | 67895.16 |
| 2026-11-10 00:00 | 77600 | 2026-11-15 22:00 | 67366.02 |
| 2026-11-09 00:00 | 69600 | 2026-11-16 04:00 | 66935.78 |
| 2026-11-08 00:00 | 75600 | 2026-11-16 10:00 | 66679.22 |
| 2026-11-07 00:00 | 74100 | 2026-11-16 16:00 | 66630.34 |
| 2026-11-06 00:00 | 73700 | 2026-11-16 22:00 | 66736.61 |
| 2026-11-05 00:00 | 77400 | 2026-11-17 04:00 | 66959.72 |
| 2026-11-04 00:00 | 74000 | 2026-11-17 10:00 | 67315.12 |
| 2026-11-17 16:00 | 67709.37 | ||
| 2026-11-17 22:00 | 68050.97 | ||
| 2026-11-18 04:00 | 68319.91 | ||
| 2026-11-18 10:00 | 68482.28 | ||
| 2026-11-18 16:00 | 68508.14 | ||
| 2026-11-18 22:00 | 68428.54 | ||
| 2026-11-19 04:00 | 68299.71 | ||
| 2026-11-19 10:00 | 68159.62 | ||
| 2026-11-19 16:00 | 68019.69 | ||
| 2026-11-19 22:00 | 67885.09 | ||
| 2026-11-20 04:00 | 67760.16 | ||
| 2026-11-20 10:00 | 67655.59 | ||
| 2026-11-20 16:00 | 67576.53 | ||
| 2026-11-20 22:00 | 67523.52 | ||
| 2026-11-21 04:00 | 67493.65 | ||
| 2026-11-21 10:00 | 67488.58 | ||
| 2026-11-21 16:00 | 67501.73 | ||
| 2026-11-21 22:00 | 67523.64 | ||
| 2026-11-22 04:00 | 67546.39 | ||
| 2026-11-22 10:00 | 67579.52 | ||
| 2026-11-22 16:00 | 67621.48 | ||
| 2026-11-22 22:00 | 67655.57 | ||
| 2026-11-23 04:00 | 67675.04 | ||
| 2026-11-23 10:00 | 67694.56 | ||
| 2026-11-23 16:00 | 67716.14 | ||
| 2026-11-23 22:00 | 67731.09 | ||
| 2026-11-24 04:00 | 67741.2 | ||