McNary Dam & Lake Wallula
March 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 | | | | 167.70 | 167.20 | 153.30 | 10.30 | 339.49 | 339.52 | 267.37 | 72.15 |
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| TOT | | | | | | | | | | | |
| AVG | | | | 167.70 | 167.20 | 153.30 | 10.30 | 339.49 | 339.52 | 267.37 | 72.15 |
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| MAX | | | | 167.70 | 167.20 | 153.30 | 10.30 | 339.49 | 339.52 | 267.37 | 72.15 |
| MIN | | | | 167.70 | 167.20 | 153.30 | 10.30 | 339.49 | 339.52 | 267.37 | 72.15 |