US Army Corps of Engineers

Rocky Reach Dam & Lake

April 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 19496 812 0 115.35 119.18 118.88 0.00 705.22 705.22 617.64 87.58
2 18673 778 0 112.98 112.58 112.25 0.00 705.43 705.89 617.07 88.82
3 19578 816 0 118.27 118.67 118.36 0.00 705.16 705.53 617.62 87.91
4 19085 795 0 114.55 115.35 115.05 0.00 705.06 705.51 617.42 88.09
5 18907 788 0 115.82 114.92 114.62 0.00 705.32 705.19 617.30 87.89
6 18988 791 0 112.25 115.33 115.03 0.00 704.61 705.11 617.30 87.81
7 98.81 95.63 95.32 0.00 705.75 705.34 616.10 89.24
8 103.67 108.03 107.72 0.00 704.49 704.91 616.75 88.16
9 105.24 101.29 100.99 0.00 705.54 705.09 616.43 88.66
10 126.76 123.36 123.08 0.00 705.85 705.32 618.09 87.23
11 116.33 115.73 115.47 0.00 706.14 705.53 617.42 88.11
12 138.04 140.57 140.27 0.00 704.96 705.18 619.18 86.00
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TOT114727  0        
AVG 19121 797 0 114.84 115.05 114.75 0.00 705.29 705.32 617.36 87.96
MAX 19578   138.04 140.57 140.27 0.00 706.14 705.89 619.18 89.24
MIN 18673   98.81 95.63 95.32 0.00 704.49 704.91 616.10 86.00