COLUMBIA--GRAND COULEE DAM (GCDW1)
| Observed | Forecast/Trend Issued: 2026-11-07 08:25 PST | ||
| Date/Time (PST) | Inflow | Date/Time (PST) | Inflow |
| 2026-11-07 00:00 | 74100 | 2026-11-07 22:00 | 75127.89 |
| 2026-11-06 00:00 | 73700 | 2026-11-08 04:00 | 74926.14 |
| 2026-11-05 00:00 | 77400 | 2026-11-08 10:00 | 74713.98 |
| 2026-11-04 00:00 | 74000 | 2026-11-08 16:00 | 74237.6 |
| 2026-11-03 00:00 | 76400 | 2026-11-08 22:00 | 73360.67 |
| 2026-11-02 00:00 | 63400 | 2026-11-09 04:00 | 72255.06 |
| 2026-11-01 00:00 | 58000 | 2026-11-09 10:00 | 71238.98 |
| 2026-10-30 23:00 | 59200 | 2026-11-09 16:00 | 70500.19 |
| 2026-10-29 23:00 | 59000 | 2026-11-09 22:00 | 70038.88 |
| 2026-10-28 23:00 | 57700 | 2026-11-10 04:00 | 69779.92 |
| 2026-10-27 23:00 | 51500 | 2026-11-10 10:00 | 69671.27 |
| 2026-11-10 16:00 | 69687.01 | ||
| 2026-11-10 22:00 | 69795.31 | ||
| 2026-11-11 04:00 | 69957.89 | ||
| 2026-11-11 10:00 | 70146.98 | ||
| 2026-11-11 16:00 | 70336.5 | ||
| 2026-11-11 22:00 | 70502.86 | ||
| 2026-11-12 04:00 | 70634.93 | ||
| 2026-11-12 10:00 | 70739.91 | ||
| 2026-11-12 16:00 | 70831.03 | ||
| 2026-11-12 22:00 | 70921.25 | ||
| 2026-11-13 04:00 | 71022.17 | ||
| 2026-11-13 10:00 | 71142.64 | ||
| 2026-11-13 16:00 | 71283.01 | ||
| 2026-11-13 22:00 | 71435.95 | ||
| 2026-11-14 04:00 | 71594.71 | ||
| 2026-11-14 10:00 | 71772.42 | ||
| 2026-11-14 16:00 | 71996.36 | ||
| 2026-11-14 22:00 | 72277.48 | ||
| 2026-11-15 04:00 | 72573.07 | ||
| 2026-11-15 10:00 | 72743.23 | ||
| 2026-11-15 16:00 | 72566.5 | ||
| 2026-11-15 22:00 | 71931.28 | ||
| 2026-11-16 04:00 | 71007.45 | ||
| 2026-11-16 10:00 | 70142.54 | ||
| 2026-11-16 16:00 | 69563.07 | ||
| 2026-11-16 22:00 | 69182.28 | ||
| 2026-11-17 04:00 | 68945.28 | ||