US Army Corps of Engineers

McNary Dam & Lake Wallula

May 2022

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 6350 265 96 150.70 155.40 50.60 100.10 338.68 338.68 265.99 72.69
2 6358 265 96 151.80 149.00 50.60 93.70 338.82 338.78 266.01 72.77
3 6350 265 96 150.80 160.30 50.80 104.80 338.32 338.64 266.27 72.37
4 6343 264 96 152.70 155.40 51.00 99.70 338.17 338.18 266.15 72.03
5 6299 262 96 179.70 180.50 50.90 124.90 338.05 338.26 266.60 71.66
6 6310 263 96 201.00 198.20 51.40 142.10 338.23 338.20 267.07 71.13
7 6331 264 96 217.70 209.00 51.80 152.50 338.70 338.25 267.40 70.85
8 6378 266 96 222.80 232.20 51.90 175.50 338.25 338.76 267.65 71.11
9 6340 264 96 220.70 211.20 51.50 155.00 338.78 338.68 267.34 71.34
10 6314 263 96 220.30 224.30 51.30 168.20 338.53 338.63 267.38 71.25
11 6292 262 96 241.40 244.70 51.60 188.40 338.31 338.42 267.78 70.64
12 6320 263 96 227.60 230.10 51.70 173.70 338.26 338.30 267.51 70.79
13 6326 264 96 238.10 237.30 51.80 180.80 338.28 338.33 267.60 70.73
14 6346 264 96 237.00 240.60 51.90 184.00 338.09 338.24 267.38 70.86
15 6331 264 96 244.60 239.30 51.60 183.00 338.37 338.30 267.29 71.01
16 6389 266 96 229.40 232.70 52.10 175.90 338.18 338.28 267.29 70.99
17 6348 264 96 247.60 250.60 52.20 193.80 337.99 338.40 267.83 70.57
18 6341 264 96 253.80 245.00 52.10 188.20 338.47 338.43 267.87 70.56
19 6326 264 96 260.10 263.10 52.00 206.40 338.33 338.72 268.24 70.48
20 6342 264 96 271.80 274.50 52.60 217.30 338.18 338.40 268.41 69.99
21 264.40 271.20 52.70 213.80 337.79 338.17 268.02 70.15
22 262.30 263.10 52.70 205.70 337.76 337.72 267.83 69.89
23 252.60 253.60 52.40 196.50 337.71 337.79 267.51 70.28
24 252.60 257.00 51.70 200.60 337.50 337.80 267.74 70.06
25 268.80 263.30 53.20 205.50 337.73 337.62 268.01 69.61
26 265.20 268.40 53.30 210.40 337.57 337.80 267.83 69.97
27 293.30 287.20 53.00 229.50 337.90 337.89 268.20 69.69
28
29
30
31
TOT126734  1920        
AVG 6337 264 96 228.84 229.53 51.87 172.96 338.18 338.28 267.41 70.87
MAX 6389   293.30 287.20 53.30 229.50 338.82 338.78 268.41 72.77
MIN 6292   150.70 149.00 50.60 93.70 337.50 337.62 265.99 69.61