Ice Harbor Dam
May 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 | 2259 | 94 | 54 | 70.00 | 69.80 | 13.00 | 56.20 | 437.72 | 437.70 | 342.17 | 95.53 |
| 2 | 2239 | 93 | 53 | 70.60 | 68.70 | 12.80 | 55.10 | 438.19 | 437.87 | 342.14 | 95.73 |
| 3 | 2237 | 93 | 54 | 62.40 | 62.60 | 12.70 | 49.20 | 438.13 | 438.09 | 341.59 | 96.50 |
| 4 | 2238 | 93 | 55 | 69.00 | 69.90 | 12.80 | 56.40 | 437.91 | 438.00 | 342.17 | 95.83 |
| 5 | 2259 | 94 | 54 | 75.50 | 75.70 | 13.00 | 61.90 | 437.88 | 437.98 | 342.70 | 95.28 |
| 6 | 2265 | 94 | 55 | 77.40 | 75.90 | 13.00 | 62.20 | 438.25 | 438.10 | 342.74 | 95.36 |
| 7 | 2266 | 94 | 54 | 80.70 | 81.70 | 13.10 | 67.90 | 438.04 | 438.16 | 343.38 | 94.78 |
| 8 | | | | 86.70 | 85.70 | 13.00 | 72.00 | 438.26 | 438.03 | 343.70 | 94.33 |
| 9 | | | | 90.40 | 91.80 | 13.10 | 78.10 | 437.92 | 438.06 | 344.13 | 93.93 |
| 10 | | | | 87.10 | 87.10 | 13.10 | 73.40 | 437.91 | 437.92 | 343.87 | 94.05 |
| 11 | | | | 88.10 | 88.30 | 13.10 | 74.60 | 437.87 | 437.94 | 343.90 | 94.04 |
| 12 | | | | 89.50 | 88.80 | 13.10 | 75.00 | 438.01 | 437.90 | 343.94 | 93.96 |
| 13 | | | | 93.90 | 93.40 | 13.10 | 79.70 | 438.12 | 437.99 | 344.34 | 93.65 |
| 14 | | | | 101.70 | 102.60 | 13.20 | 88.80 | 437.91 | 438.04 | 345.00 | 93.04 |
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| TOT | 15763 | | 379 | | | | | | | | |
| AVG | 2252 | 94 | 54 | 81.64 | 81.57 | 13.01 | 67.89 | 438.01 | 437.98 | 343.27 | 94.72 |
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| MAX | 2266 | | | 101.70 | 102.60 | 13.20 | 88.80 | 438.26 | 438.16 | 345.00 | 96.50 |
| MIN | 2237 | | | 62.40 | 62.60 | 12.70 | 49.20 | 437.72 | 437.70 | 341.59 | 93.04 |