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 | 13668 | 570 | 48 | 97.90 | 96.50 | 90.70 | 0.00 | 159.24 | 159.05 | 76.21 | 82.84 |
| 8 | 14528 | 605 | 48 | 98.60 | 102.50 | 96.70 | 0.00 | 158.52 | 158.83 | 76.43 | 82.40 |
| 9 | 11922 | 497 | 48 | 85.90 | 86.00 | 80.10 | 0.00 | 158.51 | 158.45 | 76.70 | 81.75 |
| 10 | 10960 | 457 | 48 | 83.70 | 78.60 | 72.70 | 0.00 | 159.46 | 158.97 | 76.31 | 82.66 |
| 11 | 10562 | 440 | 48 | 74.80 | 75.40 | 69.50 | 0.00 | 159.35 | 159.48 | 76.09 | 83.39 |
| 12 | 10376 | 432 | 48 | 75.90 | 74.10 | 68.20 | 0.00 | 159.68 | 159.57 | 76.23 | 83.34 |
| 13 | 11142 | 464 | 48 | 77.60 | 79.50 | 73.70 | 0.00 | 159.35 | 159.39 | 76.38 | 83.01 |
| 14 | | | | 78.00 | 77.90 | 72.10 | 0.00 | 159.35 | 159.33 | 76.43 | 82.90 |
| 15 | | | | 71.70 | 74.30 | 68.50 | 0.00 | 158.86 | 159.23 | 76.18 | 83.05 |
| 16 | | | | 76.50 | 77.50 | 71.70 | 0.00 | 158.67 | 158.83 | 76.36 | 82.47 |
| 17 | | | | 63.20 | 61.80 | 56.00 | 0.00 | 158.94 | 158.68 | 76.56 | 82.12 |
| 18 | | | | 66.00 | 63.40 | 57.60 | 0.00 | 159.43 | 159.23 | 75.95 | 83.28 |
| 19 | | | | 65.10 | 66.40 | 60.60 | 0.00 | 159.18 | 159.42 | 75.85 | 83.57 |
| 20 | | | | 65.30 | 65.30 | 59.40 | 0.00 | 159.17 | 159.20 | 75.86 | 83.34 |
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| TOT | 148164 | | 624 | | | | | | | | |
| AVG | 11397 | 475 | 48 | 77.46 | 77.38 | 71.37 | 0.00 | 159.07 | 159.07 | 76.18 | 82.90 |
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| MAX | 14528 | | | 98.60 | 102.50 | 96.70 | 0.00 | 159.68 | 159.57 | 76.70 | 83.57 |
| MIN | 8983 | | | 63.20 | 61.80 | 56.00 | 0.00 | 158.51 | 158.45 | 75.71 | 81.75 |