The Dalles Dam
April 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 | 23951 | 998 | 48 | 223.10 | 225.50 | 170.30 | 49.80 | 158.99 | 158.84 | 80.24 | 78.60 |
| 2 | 23958 | 998 | 48 | 203.00 | 204.30 | 171.00 | 27.50 | 158.73 | 158.14 | 79.77 | 78.37 |
| 3 | 23988 | 1000 | 48 | 204.50 | 202.30 | 168.70 | 27.80 | 159.14 | 158.99 | 79.60 | 79.39 |
| 4 | 23991 | 1000 | 48 | 201.70 | 201.10 | 167.20 | 28.10 | 159.24 | 159.37 | 79.37 | 80.00 |
| 5 | 23963 | 998 | 48 | 205.30 | 206.00 | 166.10 | 34.20 | 159.20 | 159.41 | 79.08 | 80.33 |
| 6 | 23952 | 998 | 48 | 198.40 | 201.50 | 167.80 | 27.90 | 158.60 | 158.86 | 79.26 | 79.60 |
| 7 | | | | 188.60 | 191.20 | 168.90 | 16.50 | 158.05 | 158.22 | 78.98 | 79.24 |
| 8 | | | | 174.20 | 175.00 | 164.00 | 5.20 | 157.93 | 158.39 | 77.81 | 80.58 |
| 9 | | | | 177.20 | 169.20 | 163.40 | 0.00 | 159.43 | 158.91 | 77.57 | 81.34 |
| 10 | | | | 174.70 | 180.90 | 107.10 | 68.00 | 158.27 | 158.47 | 77.53 | 80.94 |
| 11 | | | | 188.00 | 185.80 | 108.00 | 72.00 | 158.70 | 158.80 | 77.26 | 81.54 |
| 12 | | | | 204.20 | 206.10 | 126.30 | 74.00 | 158.31 | 158.78 | 78.29 | 80.49 |
| 13 | | | | 199.30 | 197.20 | 108.40 | 83.00 | 158.71 | 158.38 | 78.20 | 80.18 |
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| TOT | 143803 | | 288 | | | | | | | | |
| AVG | 23967 | 999 | 48 | 195.55 | 195.85 | 150.55 | 39.54 | 158.72 | 158.74 | 78.69 | 80.05 |
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| MAX | 23991 | | | 223.10 | 225.50 | 171.00 | 83.00 | 159.43 | 159.41 | 80.24 | 81.54 |
| MIN | 23951 | | | 174.20 | 169.20 | 107.10 | 0.00 | 157.93 | 158.14 | 77.26 | 78.37 |