US Army Corps of Engineers

Bonneville Dam & Lake on Columbia River

December 2022

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetProject Average Tailwater2nd Powerhouse Total MWh2nd Powerhouse Flow kcfs
1 128.10 133.10 124.80 0.90 75.40 75.20 12.50 62.70 12.40 58.70
2 141.60 139.60 131.10 1.10 75.80 74.90 12.90 62.00 12.40 36.20
3
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10
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31
TOT              
AVG    134.85 136.35 127.95 1.00 75.60 75.05 12.70 62.35 12.40  47.45
MAX    141.60 139.60 131.10 1.10 75.80 75.20 12.90 62.70 12.40  58.70
MIN    128.10 133.10 124.80 0.90 75.40 74.90 12.50 62.00 12.40  36.20