US Army Corps of Engineers

Lower Granite Dam & Lake

December 2024

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetMidnight Lewiston Gage ft
1 3278 137 48 16.60 19.10 18.70 0.00 733.43 733.84 634.63 99.21 733.85
2 2759 115 48 16.40 16.20 15.80 0.00 733.47 733.46 634.16 99.30 733.58
3 16.90 16.10 15.70 0.00 733.68 733.55 633.65 99.90 733.69
4 16.70 15.00 14.50 0.00 734.10 733.83 633.64 100.19 734.03
5 16.40 16.40 15.90 0.00 734.11 733.97 633.53 100.44 734.07
6 16.30 17.50 17.00 0.00 733.82 733.77 633.47 100.30 733.77
7 16.00 16.10 15.70 0.00 733.79 733.78 633.43 100.35 733.80
8 16.00 18.20 17.80 0.00 733.25 733.87 633.39 100.48 733.66
9 17.20 14.50 14.10 0.00 733.94 733.47 633.43 100.04 733.53
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TOT 6037  96         
AVG 3018 126 48 16.50 16.57 16.13 0.00 733.73 733.73 633.70 100.02 733.78
MAX 3278   17.20 19.10 18.70 0.00 734.11 733.97 634.63 100.48 734.07
MIN 2759   16.00 14.50 14.10 0.00 733.25 733.46 633.39 99.21 733.53