US Army Corps of Engineers

Priest Rapids Dam & Reservoir

September 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 11595 483 51 89.60 86.60 84.40 1.60 486.87 486.57 406.59 79.98
2 10658 444 37 76.20 80.40 77.90 2.10 485.72 485.49 406.11 79.38
3 9520 397 23 70.10 69.80 68.10 1.40 485.81 485.46 405.03 80.43
4 10046 419 20 76.20 74.10 72.00 1.60 486.38 486.05 405.32 80.73
5 9766 407 35 75.60 72.00 68.80 2.60 487.34 486.87 405.24 81.63
6 10638 443 46 77.50 78.80 75.50 2.70 486.99 486.93 405.93 81.00
7 10305 429 45 76.50 75.80 72.40 2.70 487.19 487.17 405.71 81.46
8 11005 459 46 78.70 82.10 79.00 2.50 486.28 486.44 406.44 80.00
9 11184 466 50 83.50 83.50 80.60 2.50 486.28 486.11 406.46 79.65
10 11927 497 50 91.40 89.50 86.50 2.40 486.79 486.24 407.07 79.17
11 12143 506 45 92.80 92.50 89.10 2.50 486.86 486.48 407.08 79.40
12 12845 535 43 93.10 97.70 94.40 2.30 485.60 485.77 407.79 77.98
13 10241 427 43 76.00 76.70 73.70 2.20 485.40 485.49 405.83 79.66
14 10687 445 43 80.00 80.70 77.80 2.00 485.20 485.05 406.24 78.81
15 64.80 63.30 60.60 2.00 485.62 485.10 404.32 80.78
16 82.30 78.80 75.60 2.30 486.57 486.03 405.88 80.15
17 89.50 92.30 89.00 2.30 485.82 485.84 407.10 78.74
18 83.00 84.60 81.70 2.00 485.37 485.07 406.47 78.60
19 47.70 47.60 45.10 2.00 485.39 485.03 402.54 82.49
20 51.40 50.20 47.80 1.90 485.74 484.59 402.77 81.82
21 66.70 60.70 57.60 2.40 487.38 486.26 403.94 82.32
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TOT152560  577        
AVG 10897 454 41 77.27 77.03 74.17 2.19 486.22 485.91 405.71 80.20
MAX 12845   93.10 97.70 94.40 2.70 487.38 487.17 407.79 82.49
MIN 9520   47.70 47.60 45.10 1.40 485.20 484.59 402.54 77.98