US Army Corps of Engineers

Lower Granite Dam & Lake

February 2020

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetMidnight Lewiston Gage ft
1 5584 233 16 34.20 32.50 32.40 0.00 736.42 736.71 636.69 100.02 736.57
2 6215 259 17 36.20 34.90 34.80 0.00 736.74 737.13 636.72 100.41 736.82
3 6188 258 18 34.70 34.80 34.80 0.00 736.72 736.60 636.80 99.80 736.82
4 6693 279 19 35.00 38.20 37.90 0.00 735.93 736.73 636.69 100.04 735.87
5 5021 209 19 31.70 28.80 28.70 0.00 736.67 736.54 636.28 100.26 736.83
6 6150 256 20 31.90 35.70 35.60 0.00 735.74 736.17 636.49 99.68 735.87
7 10265 428 20 58.70 58.80 58.70 0.00 735.72 736.17 637.04 99.13 736.16
8 12116 505 19 68.90 69.80 69.80 0.00 735.50 735.64 637.68 97.96 735.91
9 8869 370 19 51.70 50.00 50.00 0.00 735.91 735.93 636.79 99.14 736.10
10 7756 323 19 44.00 43.70 43.70 0.00 736.00 736.26 636.96 99.30 736.20
11 7198 300 31 41.90 40.80 40.70 0.00 736.25 736.41 637.21 99.20 736.51
12 6626 276 48 38.20 37.70 37.60 0.00 736.37 736.30 636.87 99.43 736.60
13 6930 289 37 38.80 39.10 39.00 0.00 736.31 736.37 635.62 100.75 736.39
14 6646 277 29 36.60 37.40 37.20 0.00 736.12 736.43 635.00 101.43 736.36
15 6610 275 29 36.90 37.30 37.20 0.00 736.04 736.11 634.33 101.78 736.14
16 5926 247 29 35.50 33.00 32.80 0.00 736.66 736.81 634.19 102.62 736.82
17 30.00 34.10 34.00 0.00 735.64 736.22 634.20 102.02 735.84
18 32.00 32.80 32.50 0.00 735.48 735.96 633.96 102.00 735.62
19 31.70 30.00 29.80 0.00 735.92 735.76 634.13 101.63 736.06
20 30.40 29.50 29.30 0.00 736.15 736.30 635.46 100.84 736.26
21 27.60 26.90 26.70 0.00 736.34 736.11 635.88 100.23 736.39
22 25.80 24.10 23.90 0.00 736.76 736.83 636.26 100.57 737.01
23 25.20 26.30 26.20 0.00 736.49 736.55 637.23 99.32 736.70
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TOT114795  389         
AVG 7175 299 24 37.29 37.23 37.10 0.00 736.17 736.35 636.02 100.33 736.34
MAX 12116   68.90 69.80 69.80 0.00 736.76 737.13 637.68 102.62 737.01
MIN 5021   25.20 24.10 23.90 0.00 735.48 735.64 633.96 97.96 735.62