US Army Corps of Engineers

John Day & Lake Umatilla

May 2022

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 12829 535 52 155.60 155.60 68.10 86.40 265.33 265.30 159.82 105.48
2 12699 529 52 142.60 147.70 67.50 79.10 265.13 265.13 159.99 105.14
3 13091 545 52 164.70 156.90 69.70 86.10 265.43 265.30 160.35 104.95
4 12911 538 51 158.80 156.10 68.40 86.60 265.53 265.49 160.04 105.45
5 13863 578 50 181.20 176.00 73.70 101.00 265.73 265.53 160.32 105.21
6 14816 617 50 203.20 203.20 78.50 123.70 265.73 265.73 160.31 105.42
7 11774 491 51 210.50 215.70 62.70 151.90 265.53 265.36 160.15 105.21
8 13805 575 50 240.30 237.70 74.00 162.60 265.63 265.68 161.01 104.67
9 15580 649 52 228.00 225.40 83.20 141.20 265.73 265.62 160.87 104.75
10 15839 660 52 230.70 228.00 84.70 142.00 265.83 265.71 161.14 104.57
11 16579 691 52 253.00 250.40 89.00 160.10 265.93 265.92 161.62 104.30
12 16565 690 52 234.20 244.60 89.10 154.30 265.53 265.76 161.49 104.27
13 16905 704 52 243.80 241.20 90.90 149.00 265.63 265.68 161.40 104.28
14 16841 702 52 245.60 250.90 90.90 158.80 265.43 265.46 161.49 103.97
15 17083 712 50 248.20 245.50 91.80 152.40 265.53 265.39 161.00 104.39
16 16132 672 51 231.50 234.20 87.10 145.70 265.43 265.31 161.52 103.79
17 17584 733 50 260.20 247.20 94.60 151.50 265.93 265.74 161.59 104.15
18 17240 718 51 263.10 256.70 93.30 162.20 265.63 265.48 161.83 103.65
19 17448 727 52 270.30 262.50 94.40 166.90 265.93 265.56 161.94 103.62
20 20826 868 51 285.10 290.30 113.20 176.00 265.73 265.91 162.66 103.25
21 278.80 278.80 105.60 171.90 265.73 265.63 162.14 103.49
22 263.70 271.60 104.80 165.30 265.43 265.59 161.95 103.64
23 258.00 258.00 92.90 164.00 265.43 265.26 161.94 103.32
24 259.00 248.50 93.00 154.10 265.83 265.64 161.56 104.08
25 263.00 273.40 102.00 170.40 265.43 265.75 162.17 103.58
26 272.90 272.90 99.20 172.40 265.43 265.42 162.05 103.37
27 283.10 285.70 103.50 181.00 265.33 265.19 162.56 102.63
28
29
30
31
TOT310412  1023        
AVG 15521 647 51 234.41 233.88 87.62 145.06 265.59 265.54 161.29 104.25
MAX 20826   285.10 290.30 113.20 181.00 265.93 265.92 162.66 105.48
MIN 11774   142.60 147.70 62.70 79.10 265.13 265.13 159.82 102.63