Priest Rapids Dam & Reservoir
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 | 16578 | 691 | 45 | 145.50 | 149.40 | 125.70 | 22.60 | 486.10 | 486.89 | 412.84 | 74.05 |
| 2 | 12326 | 514 | 45 | 119.30 | 119.60 | 91.90 | 26.90 | 486.01 | 485.10 | 410.38 | 74.72 |
| 3 | 14846 | 619 | 44 | 135.90 | 138.40 | 113.70 | 23.70 | 485.30 | 485.35 | 411.92 | 73.43 |
| 4 | 16576 | 691 | 45 | 132.60 | 128.40 | 127.40 | 0.00 | 486.48 | 484.79 | 411.51 | 73.28 |
| 5 | 16626 | 693 | 45 | 122.50 | 127.80 | 126.90 | 0.00 | 485.00 | 485.08 | 411.44 | 73.64 |
| 6 | 15874 | 661 | 46 | 124.40 | 118.00 | 117.10 | 0.00 | 486.77 | 486.35 | 410.68 | 75.67 |
| 7 | | | | 99.90 | 105.60 | 104.70 | 0.10 | 485.20 | 484.79 | 409.62 | 75.17 |
| 8 | | | | 119.90 | 116.90 | 99.10 | 16.90 | 486.04 | 485.50 | 410.32 | 75.18 |
| 9 | | | | 120.00 | 120.70 | 95.20 | 24.60 | 485.84 | 485.69 | 410.48 | 75.21 |
| 10 | | | | 129.80 | 130.80 | 104.50 | 25.50 | 485.56 | 486.01 | 411.32 | 74.69 |
| 11 | | | | 123.60 | 127.60 | 102.60 | 24.10 | 484.44 | 485.47 | 411.09 | 74.38 |
| 12 | | | | 143.00 | 137.20 | 111.50 | 24.90 | 486.07 | 485.77 | 411.84 | 73.93 |
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| TOT | 92826 | | 270 | | | | | | | | |
| AVG | 15471 | 645 | 45 | 126.37 | 126.70 | 110.03 | 15.77 | 485.73 | 485.57 | 411.12 | 74.45 |
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| MAX | 16626 | | | 145.50 | 149.40 | 127.40 | 26.90 | 486.77 | 486.89 | 412.84 | 75.67 |
| MIN | 12326 | | | 99.90 | 105.60 | 91.90 | 0.00 | 484.44 | 484.79 | 409.62 | 73.28 |