Rocky Reach Dam & Lake
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 | 19496 | 812 | 0 | 115.35 | 119.18 | 118.88 | 0.00 | 705.22 | 705.22 | 617.64 | 87.58 |
| 2 | 18673 | 778 | 0 | 112.98 | 112.58 | 112.25 | 0.00 | 705.43 | 705.89 | 617.07 | 88.82 |
| 3 | 19578 | 816 | 0 | 118.27 | 118.67 | 118.36 | 0.00 | 705.16 | 705.53 | 617.62 | 87.91 |
| 4 | 19085 | 795 | 0 | 114.55 | 115.35 | 115.05 | 0.00 | 705.06 | 705.51 | 617.42 | 88.09 |
| 5 | 18907 | 788 | 0 | 115.82 | 114.92 | 114.62 | 0.00 | 705.32 | 705.19 | 617.30 | 87.89 |
| 6 | 18988 | 791 | 0 | 112.25 | 115.33 | 115.03 | 0.00 | 704.61 | 705.11 | 617.30 | 87.81 |
| 7 | | | | 98.81 | 95.63 | 95.32 | 0.00 | 705.75 | 705.34 | 616.10 | 89.24 |
| 8 | | | | 103.67 | 108.03 | 107.72 | 0.00 | 704.49 | 704.91 | 616.75 | 88.16 |
| 9 | | | | 105.24 | 101.29 | 100.99 | 0.00 | 705.54 | 705.09 | 616.43 | 88.66 |
| 10 | | | | 126.76 | 123.36 | 123.08 | 0.00 | 705.85 | 705.32 | 618.09 | 87.23 |
| 11 | | | | 116.33 | 115.73 | 115.47 | 0.00 | 706.14 | 705.53 | 617.42 | 88.11 |
| 12 | | | | 138.04 | 140.57 | 140.27 | 0.00 | 704.96 | 705.18 | 619.18 | 86.00 |
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| TOT | 114727 | | 0 | | | | | | | | |
| AVG | 19121 | 797 | 0 | 114.84 | 115.05 | 114.75 | 0.00 | 705.29 | 705.32 | 617.36 | 87.96 |
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| MAX | 19578 | | | 138.04 | 140.57 | 140.27 | 0.00 | 706.14 | 705.89 | 619.18 | 89.24 |
| MIN | 18673 | | | 98.81 | 95.63 | 95.32 | 0.00 | 704.49 | 704.91 | 616.10 | 86.00 |