US Army Corps of Engineers

John Day & Lake Umatilla

October 2021

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 14003 583 42 83.60 75.90 73.90 0.90 265.83 265.63 159.52 106.11
2 14099 587 42 71.30 76.40 74.30 0.90 265.63 265.66 159.21 106.45
3 13726 572 42 72.00 74.60 72.60 0.80 265.53 265.59 159.59 106.00
4 14048 585 41 76.50 76.50 74.40 0.90 265.53 265.49 159.72 105.77
5 15369 640 40 86.10 83.60 81.70 0.80 265.63 265.56 160.02 105.54
6 15791 658 40 88.50 85.90 83.90 0.80 265.73 265.77 160.01 105.76
7 16816 701 40 91.20 91.20 89.10 1.10 265.73 265.79 159.95 105.84
8 19946 831 40 100.50 108.40 106.40 0.90 265.43 265.58 160.32 105.26
9 13489 562 41 68.40 73.60 71.50 0.80 265.23 265.24 159.44 105.80
10 11870 495 40 65.00 65.00 63.20 0.80 265.23 265.28 160.11 105.17
11 14998 625 42 84.50 81.90 79.90 0.80 265.33 265.43 160.03 105.40
12 16449 685 43 89.60 89.60 87.40 0.80 265.33 265.33 159.71 105.62
13 15962 665 43 86.90 86.80 84.90 0.80 265.33 265.19 159.73 105.46
14 13343 556 42 75.10 72.50 70.70 0.80 265.43 265.32 159.44 105.88
15 84.60 81.90 79.90 0.70 265.53 265.52 159.60 105.92
16 68.90 76.80 74.60 0.80 265.23 265.32 159.89 105.43
17 71.70 69.10 67.10 0.80 265.33 265.33 159.48 105.85
18 71.90 77.10 75.20 0.80 265.13 265.30 159.89 105.41
19 88.40 91.00 89.10 0.80 265.03 265.09 159.94 105.15
20 80.40 90.90 88.80 0.80 264.63 264.70 159.81 104.89
21 72.10 95.30 93.30 0.80 263.72 264.21 159.92 104.29
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TOT209909  578        
AVG 14994 625 41 79.87 82.10 80.09 0.83 265.31 265.35 159.78 105.57
MAX 19946   100.50 108.40 106.40 1.10 265.83 265.79 160.32 106.45
MIN 11870   65.00 65.00 63.20 0.70 263.72 264.21 159.21 104.29
BUILDING STRONG®