US Army Corps of Engineers

McNary Dam & Lake Wallula

February 2020

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 17335 722 48 136.90 135.90 133.40 0.00 339.24 339.13 265.55 73.58
2 16320 680 48 116.00 129.50 127.00 0.00 338.48 338.67 265.65 73.02
3 18775 782 48 156.60 151.10 148.60 0.00 338.75 338.61 266.17 72.44
4 21404 892 48 178.40 179.10 176.60 0.00 338.74 338.50 266.92 71.58
5 20920 872 48 165.60 171.00 168.50 0.00 338.40 338.66 266.75 71.91
6 21241 885 48 172.80 176.40 173.90 0.00 338.22 337.97 266.98 70.99
7 23008 959 48 212.00 195.30 190.30 2.50 339.12 338.48 267.14 71.34
8 23980 999 48 228.60 224.10 201.00 20.60 339.38 339.34 267.78 71.56
9 24072 1003 48 201.40 203.30 200.80 0.00 339.25 339.41 267.58 71.83
10 22937 956 48 199.00 192.70 190.20 0.00 339.64 339.32 267.07 72.25
11 22934 956 48 187.10 190.40 187.90 0.00 339.43 339.44 266.92 72.52
12 22156 923 48 182.10 179.00 176.50 0.00 339.59 339.35 266.50 72.85
13 23546 981 48 187.30 195.80 193.30 0.00 339.10 339.36 266.85 72.51
14 21853 911 48 165.20 181.30 178.80 0.00 338.26 338.42 266.65 71.77
15 182.00 185.90 183.40 0.00 338.07 337.95 266.37 71.58
16 159.70 155.40 152.90 0.00 338.27 338.36 265.52 72.84
17 181.30 183.70 181.20 0.00 338.12 338.07 266.15 71.92
18 188.80 194.60 192.10 0.00 337.84 337.88 266.43 71.45
19 183.30 159.20 156.70 0.00 339.11 338.70 265.48 73.22
20 167.80 167.20 164.70 0.00 339.14 338.94 265.84 73.10
21 171.40 175.00 172.50 0.00 338.98 339.10 266.34 72.76
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TOT300481  672        
AVG 21463 894 48 177.30 177.42 173.82 1.10 338.82 338.75 266.51 72.24
MAX 24072   228.60 224.10 201.00 20.60 339.64 339.44 267.78 73.58
MIN 16320   116.00 129.50 127.00 0.00 337.84 337.88 265.48 70.99
BUILDING STRONG®