Wanapum Dam & Lake
July 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 | 17809 | 742 | 17 | 150.80 | 149.50 | 127.60 | 19.90 | 570.49 | 570.13 | 492.16 | 77.97 |
| 2 | 17532 | 730 | 17 | 140.70 | 147.10 | 125.50 | 19.60 | 569.62 | 569.68 | 491.99 | 77.69 |
| 3 | | | | 131.70 | 137.90 | 117.30 | 18.60 | 568.77 | 568.29 | 491.28 | 77.01 |
| 4 | | | | 140.00 | 136.40 | 115.50 | 18.90 | 569.26 | 568.76 | 491.31 | 77.45 |
| 5 | | | | 126.70 | 138.10 | 117.70 | 18.50 | 567.67 | 568.07 | 491.40 | 76.67 |
| 6 | | | | 127.80 | 141.70 | 122.50 | 17.20 | 565.73 | 566.22 | 491.46 | 74.76 |
| 7 | | | | 112.10 | 116.70 | 98.50 | 16.30 | 565.07 | 564.90 | 489.91 | 74.99 |
| 8 | | | | 101.80 | 101.10 | 82.90 | 16.20 | 565.16 | 564.77 | 489.14 | 75.63 |
| 9 | | | | 119.90 | 107.50 | 88.70 | 16.80 | 566.92 | 565.64 | 489.44 | 76.20 |
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| TOT | 35341 | | 34 | | | | | | | | |
| AVG | 17670 | 736 | 17 | 127.94 | 130.67 | 110.69 | 18.00 | 567.63 | 567.38 | 490.90 | 76.49 |
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| MAX | 17809 | | | 150.80 | 149.50 | 127.60 | 19.90 | 570.49 | 570.13 | 492.16 | 77.97 |
| MIN | 17532 | | | 101.80 | 101.10 | 82.90 | 16.20 | 565.07 | 564.77 | 489.14 | 74.76 |