US Army Corps of Engineers

McNary Dam & Lake Wallula

May 2024

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 7032 293 72 146.60 146.30 54.90 86.60 338.43 338.61 266.10 72.51
2 7033 293 72 142.30 139.40 54.60 80.10 338.63 338.63 266.06 72.57
3 7068 295 72 150.50 146.00 54.80 86.50 338.80 339.02 266.05 72.97
4 7023 293 72 140.20 144.60 54.40 85.40 338.62 338.78 265.96 72.82
5 7003 292 72 131.90 150.60 55.20 90.80 337.56 338.22 266.49 71.73
6 7185 299 72 147.30 127.20 56.70 65.80 338.65 337.99 265.89 72.10
7 7130 297 72 145.50 135.10 56.20 74.20 339.18 339.04 266.11 72.93
8 7170 299 72 141.80 141.40 56.00 80.60 339.15 339.18 266.10 73.08
9 7005 292 72 145.60 144.50 54.50 85.20 339.32 339.29 266.27 73.02
10 7032 293 72 153.30 161.60 54.60 102.30 338.87 339.13 266.36 72.77
11 7016 292 72 140.80 156.10 54.80 96.60 338.07 338.59 266.27 72.32
12 7020 293 72 153.50 149.30 55.00 89.60 338.26 338.10 266.01 72.09
13 174.20 167.70 55.00 108.00 338.58 338.39 266.31 72.08
14 190.60 192.80 55.20 132.90 338.50 338.56 266.73 71.83
15 208.30 221.00 55.60 160.60 337.83 338.27 267.03 71.24
16 230.60 226.90 56.60 165.60 338.00 337.76 267.41 70.35
17 217.50 211.40 56.10 150.60 338.37 338.28 266.90 71.38
18 232.40 219.10 55.90 158.50 339.10 338.65 266.89 71.76
19 240.10 237.60 55.40 177.50 339.12 339.27 267.25 72.02
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TOT 84718  864        
AVG 7060 294 72 170.16 169.40 55.34 109.34 338.58 338.62 266.43 72.19
MAX 7185   240.10 237.60 56.70 177.50 339.32 339.29 267.41 73.08
MIN 7003   131.90 127.20 54.40 65.80 337.56 337.76 265.89 70.35