The Dalles Dam
October 2026
| Day of Month | Total Generation MWh | Average Generation MW | Station Use MWh | Inflow kcfs | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Midnight Reservoir Elevation | Average Forebay Elevation | Average Tailwater Elevation | Average Head feet |
| 1 | 11169 | 465 | 48 | 80.50 | 79.60 | 73.80 | 0.00 | 158.99 | 158.88 | 75.71 | 83.17 |
| 2 | 10520 | 438 | 48 | 74.40 | 75.70 | 69.90 | 0.00 | 158.77 | 158.83 | 76.41 | 82.42 |
| 3 | 8983 | 374 | 48 | 67.20 | 66.30 | 59.40 | 0.00 | 158.92 | 158.79 | 75.87 | 82.92 |
| 4 | 10843 | 452 | 48 | 79.00 | 78.70 | 71.40 | 0.00 | 159.01 | 159.13 | 75.88 | 83.25 |
| 5 | 11298 | 471 | 48 | 81.30 | 81.60 | 74.60 | 0.00 | 158.97 | 159.20 | 76.04 | 83.16 |
| 6 | 12193 | 508 | 48 | 86.60 | 86.50 | 80.70 | 0.00 | 159.01 | 159.01 | 76.06 | 82.95 |
| 7 | | | | 97.90 | 96.50 | 90.70 | 0.00 | 159.24 | 159.05 | 76.21 | 82.84 |
| 8 | | | | 98.60 | 102.50 | 96.70 | 0.00 | 158.52 | 158.83 | 76.43 | 82.40 |
| 9 | | | | 85.90 | 86.00 | 80.10 | 0.00 | 158.51 | 158.45 | 76.70 | 81.75 |
| 10 | | | | 83.70 | 78.60 | 72.70 | 0.00 | 159.46 | 158.97 | 76.31 | 82.66 |
| 11 | | | | 74.80 | 75.40 | 69.50 | 0.00 | 159.35 | 159.48 | 76.09 | 83.39 |
| 12 | | | | 75.90 | 74.10 | 68.20 | 0.00 | 159.68 | 159.57 | 76.23 | 83.34 |
| 13 | | | | 77.60 | 79.50 | 73.70 | 0.00 | 159.35 | 159.39 | 76.38 | 83.01 |
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| TOT | 65006 | | 288 | | | | | | | | |
| AVG | 10834 | 451 | 48 | 81.80 | 81.62 | 75.49 | 0.00 | 159.06 | 159.04 | 76.18 | 82.87 |
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| MAX | 12193 | | | 98.60 | 102.50 | 96.70 | 0.00 | 159.68 | 159.57 | 76.70 | 83.39 |
| MIN | 8983 | | | 67.20 | 66.30 | 59.40 | 0.00 | 158.51 | 158.45 | 75.71 | 81.75 |