US Army Corps of Engineers

Priest Rapids Dam & Reservoir

June 2026

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 16426 684 48 166.00 165.30 125.30 39.00 487.48 487.32 413.39 73.93
2 197.50 197.30 118.80 77.40 487.53 487.43 415.09 72.34
3 207.30 207.60 123.30 83.20 487.44 487.48 415.75 71.73
4 203.00 204.60 111.30 92.20 487.01 487.10 415.79 71.31
5 171.80 172.60 122.90 48.70 486.81 486.72 414.52 72.20
6 169.40 167.70 107.60 59.10 487.25 487.16 413.45 73.71
7 176.30 178.90 100.70 77.20 486.54 486.87 414.53 72.34
8 175.70 172.60 127.90 43.70 487.36 486.90 414.96 71.94
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TOT 16426  48        
AVG 16426 684 48 183.38 183.33 117.23 65.06 487.18 487.12 414.68 72.44
MAX 16426   207.30 207.60 127.90 92.20 487.53 487.48 415.79 73.93
MIN 16426   166.00 165.30 100.70 39.00 486.54 486.72 413.39 71.31