Rocky Reach Dam & Lake
June 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 |
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| 1 | | | | 160.22 | 158.07 | 144.38 | 13.36 | 705.96 | 705.64 | 620.46 | 85.18 |
| 2 | | | | 184.12 | 179.76 | 165.85 | 13.60 | 706.55 | 706.55 | 622.15 | 84.40 |
| 3 | | | | 184.62 | 184.18 | 168.29 | 15.57 | 706.45 | 706.55 | 622.36 | 84.19 |
| 4 | | | | 172.15 | 179.75 | 165.13 | 14.30 | 704.92 | 705.97 | 621.87 | 84.10 |
| 5 | | | | 159.17 | 155.75 | 140.07 | 15.34 | 706.25 | 705.55 | 620.14 | 85.41 |
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| TOT | | | | | | | | | | | |
| AVG | | | | 172.06 | 171.50 | 156.74 | 14.43 | 706.03 | 706.05 | 621.40 | 84.66 |
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| MAX | | | | 184.62 | 184.18 | 168.29 | 15.57 | 706.55 | 706.55 | 622.36 | 85.41 |
| MIN | | | | 159.17 | 155.75 | 140.07 | 13.36 | 704.92 | 705.55 | 620.14 | 84.10 |