Libby Dam & Lake Koocanusa
December 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 | Midnight Storage kaf |
| 1 | | | | 3.80 | 15.00 | 15.00 | 0.00 | 2431.82 | 2432.07 | 2122.00 | 310.07 | 3787.30 |
| 2 | | | | 4.32 | 15.50 | 15.25 | 0.25 | 2431.28 | 2431.55 | 2122.14 | 309.41 | 3765.20 |
| 3 | | | | 4.03 | 16.00 | 15.50 | 0.50 | 2430.70 | 2430.98 | 2122.22 | 308.76 | 3741.40 |
| 4 | | | | 3.45 | 16.00 | 15.50 | 0.50 | 2430.09 | 2430.39 | 2122.25 | 308.14 | 3716.50 |
| 5 | | | | 4.72 | 16.00 | 15.50 | 0.50 | 2429.54 | 2429.80 | 2122.26 | 307.54 | 3694.10 |
| 6 | | | | 6.79 | 16.00 | 15.50 | 0.50 | 2429.09 | 2429.30 | 2122.25 | 307.05 | 3675.80 |
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| TOT | | | | | | | | | | | | |
| AVG | | | | 4.52 | 15.75 | 15.38 | 0.38 | 2430.42 | 2430.68 | 2122.19 | 308.50 | 3730.05 |
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| MAX | | | | 6.79 | 16.00 | 15.50 | 0.50 | 2431.82 | 2432.07 | 2122.26 | 310.07 | 3787.30 |
| MIN | | | | 3.45 | 15.00 | 15.00 | 0.00 | 2429.09 | 2429.30 | 2122.00 | 307.05 | 3675.80 |