US Army Corps of Engineers

Libby Dam & Lake Koocanusa

December 2025

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetMidnight Storage kaf
1 8358 348 26 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
7 5.18 16.00 15.50 0.50 2428.56 2428.83 2122.25 306.58 3654.40
8 4.32 16.00 15.50 0.50 2427.56 2427.99 2122.33 305.66 3614.10
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TOT 8358  26         
AVG 8358 348 26 4.58 15.81 15.41 0.41 2429.83 2430.11 2122.21 307.90 3706.10
MAX 8358   6.79 16.00 15.50 0.50 2431.82 2432.07 2122.33 310.07 3787.30
MIN 8358   3.45 15.00 15.00 0.00 2427.56 2427.99 2122.00 305.66 3614.10