McNary Dam & Lake Wallula
April 2025
| 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 | | | | 221.10 | 204.80 | 174.80 | 25.30 | 338.93 | 338.50 | 268.40 | 70.10 |
| 2 | | | | 184.10 | 182.30 | 165.30 | 12.40 | 339.09 | 339.19 | 267.82 | 71.37 |
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| TOT | | | | | | | | | | | |
| AVG | | | | 202.60 | 193.55 | 170.05 | 18.85 | 339.01 | 338.85 | 268.11 | 70.74 |
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| MAX | | | | 221.10 | 204.80 | 174.80 | 25.30 | 339.09 | 339.19 | 268.40 | 71.37 |
| MIN | | | | 184.10 | 182.30 | 165.30 | 12.40 | 338.93 | 338.50 | 267.82 | 70.10 |