US Army Corps of Engineers

The Dalles Dam

May 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 19747 823 48 228.60 233.60 136.80 91.00 157.24 158.35 78.74 79.61
2 17167 715 48 214.90 217.40 118.60 93.00 156.76 158.08 78.48 79.60
3 18539 772 48 228.20 221.40 128.60 87.00 158.03 158.32 79.18 79.14
4 223.70 223.10 128.80 88.50 158.18 158.72 79.00 79.72
5 241.30 236.70 141.90 89.00 158.99 158.35 79.69 78.66
6 211.60 214.10 113.80 94.50 158.53 158.70 78.85 79.85
7 213.50 210.60 118.80 86.00 159.12 159.40 78.79 80.61
8 215.00 219.30 129.40 84.00 158.31 158.96 79.35 79.61
9 222.10 223.20 129.40 88.00 158.09 158.66 79.19 79.47
10 236.80 234.50 139.70 89.00 158.53 157.97 79.95 78.02
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TOT 55453  144        
AVG 18484 770 48 223.57 223.39 128.58 89.00 158.18 158.55 79.12 79.43
MAX 19747   241.30 236.70 141.90 94.50 159.12 159.40 79.95 80.61
MIN 17167   211.60 210.60 113.80 84.00 156.76 157.97 78.48 78.02