US Army Corps of Engineers

John Day & Lake Umatilla

September 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 18844 785 46 104.30 104.30 102.20 0.90 263.82 263.71 159.68 104.03
2 17174 716 48 113.50 95.50 93.20 1.00 264.53 263.95 160.00 103.95
3 16816 701 47 108.50 92.90 90.60 1.00 265.13 264.76 160.00 104.76
4 14795 616 48 86.70 81.40 79.40 0.90 265.33 265.17 159.95 105.22
5 14508 605 47 85.20 80.00 77.60 0.90 265.53 265.34 159.83 105.51
6 13638 568 47 72.70 75.40 73.20 1.00 265.43 265.30 160.18 105.12
7 14426 601 47 89.90 79.40 77.40 1.00 265.83 265.58 160.28 105.30
8 9045 377 21 119.50 106.90 103.80 1.10 266.03 266.02 160.42 105.60
9 17755 740 47 94.30 96.90 94.60 0.90 265.93 265.97 160.19 105.78
10 13341 556 46 62.70 73.10 71.30 0.80 265.53 265.72 160.23 105.49
11 12241 510 45 65.00 67.70 65.50 1.00 265.43 265.46 159.94 105.52
12 11615 484 45 59.30 64.50 62.30 0.90 265.22 265.38 159.87 105.51
13 15236 635 46 94.00 83.50 81.40 0.90 265.63 265.50 160.00 105.50
14 15107 629 46 77.50 82.80 80.70 0.90 265.42 265.51 159.97 105.54
15 12212 509 46 70.30 67.60 65.40 1.00 265.53 265.42 159.81 105.61
16 13210 550 48 75.30 72.70 70.40 0.90 265.63 265.63 159.66 105.97
17 14345 598 47 83.90 78.70 76.60 0.90 265.83 265.56 159.91 105.65
18 13955 581 48 69.00 76.80 74.70 0.90 265.53 265.66 160.14 105.52
19 12215 509 46 67.10 67.10 65.20 0.80 265.53 265.53 159.81 105.72
20 15760 657 45 91.40 86.30 84.20 0.90 265.73 265.61 160.11 105.50
21 79.30 84.50 82.70 0.90 265.53 265.61 159.85 105.76
22 80.50 80.60 78.50 0.90 265.53 265.36 160.10 105.26
23 84.20 84.20 82.10 0.90 265.53 265.40 159.91 105.49
24 104.30 99.10 97.20 0.90 265.73 265.71 160.11 105.60
25 83.50 88.70 86.60 0.90 265.53 265.71 159.63 106.08
26 79.30 74.10 72.20 0.90 265.73 265.63 159.46 106.17
27 75.50 80.60 78.50 0.90 265.53 265.56 159.64 105.92
28
29
30
TOT286240  905        
AVG 14312 596 45 84.32 82.42 80.28 0.92 265.47 265.40 159.95 105.45
MAX 18844   119.50 106.90 103.80 1.10 266.03 266.02 160.42 106.17
MIN 9045   59.30 64.50 62.30 0.80 263.82 263.71 159.46 103.95