US Army Corps of Engineers

Lower Granite Dam & Lake

June 2023

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 8044 335 34 110.30 110.30 47.20 62.60 733.50 733.55 635.17 98.38 734.65
2 109.30 109.50 46.70 62.20 733.45 733.62 635.08 98.54 734.75
3 102.60 101.80 39.20 62.20 733.66 733.73 634.82 98.91 734.75
4 100.80 102.10 39.40 62.10 733.34 733.67 634.74 98.93 734.63
5 96.70 95.60 33.10 62.00 733.60 733.56 634.26 99.30 734.49
6 97.10 96.90 34.20 62.20 733.64 733.74 634.38 99.36 734.62
7 94.10 94.20 33.70 60.00 733.61 733.63 634.35 99.28 734.50
8 91.60 91.30 31.80 58.90 733.71 733.53 634.33 99.20 734.36
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TOT 8044  34         
AVG 8044 335 34 100.31 100.21 38.16 61.52 733.56 733.63 634.64 98.99 734.59
MAX 8044   110.30 110.30 47.20 62.60 733.71 733.74 635.17 99.36 734.75
MIN 8044   91.60 91.30 31.80 58.90 733.34 733.53 634.26 98.38 734.36