The Dalles Dam
August 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 | 9444 | 394 | 48 | 115.50 | 114.50 | 63.70 | 45.00 | 159.18 | 158.85 | 77.44 | 81.41 |
| 2 | 9465 | 394 | 48 | 114.20 | 114.40 | 63.60 | 45.00 | 159.15 | 159.06 | 77.35 | 81.71 |
| 3 | 9066 | 378 | 48 | 112.10 | 111.40 | 60.60 | 45.00 | 159.24 | 159.31 | 77.18 | 82.13 |
| 4 | 9392 | 391 | 48 | 111.90 | 113.80 | 63.00 | 45.00 | 158.92 | 158.84 | 76.91 | 81.93 |
| 5 | 9993 | 416 | 48 | 117.70 | 117.60 | 66.80 | 45.00 | 158.91 | 159.01 | 76.87 | 82.14 |
| 6 | 10245 | 427 | 48 | 122.90 | 121.30 | 68.50 | 47.00 | 159.23 | 159.08 | 76.92 | 82.16 |
| 7 | 9821 | 409 | 48 | 117.20 | 121.20 | 66.40 | 49.00 | 158.46 | 158.74 | 77.29 | 81.45 |
| 8 | 9157 | 382 | 48 | 116.50 | 117.10 | 62.30 | 49.00 | 158.31 | 158.09 | 77.33 | 80.76 |
| 9 | 9108 | 380 | 48 | 114.80 | 114.70 | 61.90 | 47.00 | 158.35 | 158.17 | 77.32 | 80.85 |
| 10 | 8312 | 346 | 48 | 110.00 | 108.10 | 56.30 | 46.00 | 158.74 | 158.48 | 77.22 | 81.26 |
| 11 | 8860 | 369 | 48 | 109.00 | 108.50 | 59.70 | 43.00 | 158.79 | 158.35 | 76.83 | 81.52 |
| 12 | 8805 | 367 | 48 | 110.20 | 108.20 | 59.40 | 43.00 | 159.18 | 158.49 | 76.95 | 81.54 |
| 13 | 8740 | 364 | 48 | 107.20 | 107.60 | 58.80 | 43.00 | 159.07 | 158.99 | 77.27 | 81.72 |
| 14 | 8311 | 346 | 48 | 102.30 | 104.80 | 56.00 | 43.00 | 158.60 | 158.82 | 77.18 | 81.64 |
| 15 | 9481 | 395 | 48 | 112.10 | 111.90 | 64.10 | 42.00 | 158.69 | 158.62 | 77.32 | 81.30 |
| 16 | 8097 | 337 | 48 | 109.90 | 105.30 | 54.50 | 45.00 | 159.48 | 158.67 | 77.15 | 81.52 |
| 17 | 8834 | 368 | 48 | 105.30 | 107.00 | 59.10 | 42.00 | 159.18 | 159.15 | 77.09 | 82.06 |
| 18 | | | | 105.50 | 99.10 | 54.40 | 38.90 | 159.65 | 158.92 | 77.20 | 81.72 |
| 19 | | | | 104.90 | 106.60 | 60.40 | 40.30 | 159.36 | 159.47 | 77.24 | 82.23 |
| 20 | | | | 108.90 | 108.10 | 60.30 | 42.00 | 159.48 | 158.88 | 77.17 | 81.71 |
| 21 | | | | 106.80 | 109.60 | 60.80 | 43.00 | 159.00 | 158.78 | 77.11 | 81.67 |
| 22 | | | | 106.50 | 105.70 | 55.90 | 44.00 | 159.14 | 158.36 | 77.02 | 81.34 |
| 23 | | | | 94.40 | 90.70 | 52.90 | 31.90 | 159.79 | 159.18 | 76.57 | 82.61 |
| 24 | | | | 99.60 | 102.70 | 60.90 | 36.00 | 159.22 | 159.32 | 76.19 | 83.13 |
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| TOT | 155131 | | 816 | | | | | | | | |
| AVG | 9125 | 380 | 48 | 109.81 | 109.58 | 60.43 | 43.34 | 159.05 | 158.82 | 77.09 | 81.73 |
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| MAX | 10245 | | | 122.90 | 121.30 | 68.50 | 49.00 | 159.79 | 159.47 | 77.44 | 83.13 |
| MIN | 8097 | | | 94.40 | 90.70 | 52.90 | 31.90 | 158.31 | 158.09 | 76.19 | 80.76 |