US Army Corps of Engineers

McNary Dam & Lake Wallula

January 2025

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 16048 669 96 124.20 128.40 124.40 0.00 338.19 338.41 265.73 72.68
2 16912 705 96 150.80 135.80 131.80 0.00 338.95 338.58 265.89 72.69
3 17632 735 96 141.10 141.50 137.50 0.00 338.95 339.16 266.23 72.93
4 16682 695 96 132.60 133.40 129.40 0.00 338.88 339.04 266.28 72.76
5 14630 610 45 111.10 117.70 113.80 0.00 338.55 338.65 266.35 72.30
6 14792 616 24 119.20 119.30 116.20 0.00 338.50 338.43 266.53 71.90
7 16197 675 24 133.70 129.90 127.10 0.00 338.63 338.78 266.56 72.22
8 15289 637 24 123.50 121.60 118.80 0.00 338.80 338.89 266.40 72.49
9 15284 637 24 123.20 121.00 118.20 0.00 339.08 339.03 266.21 72.82
10 14703 613 24 110.20 117.10 114.30 0.00 338.58 338.71 266.37 72.34
11 12733 531 24 104.40 101.60 98.80 0.00 338.72 338.60 266.11 72.49
12 12842 535 24 103.30 102.20 99.40 0.00 338.92 338.62 266.04 72.58
13 16641 693 24 119.50 133.00 130.20 0.00 338.16 338.59 266.32 72.27
14 14509 605 24 130.20 115.20 112.40 0.00 339.02 338.69 265.94 72.75
15 16481 687 24 124.50 130.40 127.60 0.00 338.56 338.83 266.05 72.78
16 13577 566 24 112.90 107.30 104.50 0.00 338.90 338.76 265.63 73.13
17 13811 575 24 111.60 108.70 105.90 0.00 339.17 339.01 265.60 73.41
18 15573 649 24 124.40 122.00 119.20 0.00 339.18 339.31 265.85 73.46
19 16929 705 24 133.80 134.00 131.20 0.00 339.24 339.16 266.22 72.94
20 16997 708 24 122.10 134.90 132.10 0.00 338.48 338.63 265.98 72.65
21 142.10 137.80 135.00 0.00 338.73 338.66 265.80 72.86
22 146.10 144.50 141.00 0.00 338.73 338.91 265.94 72.97
23 123.00 124.50 120.50 0.00 338.67 338.47 265.87 72.60
24 124.30 124.00 120.00 0.00 338.64 338.75 265.97 72.78
25 127.50 120.80 116.80 0.00 339.00 338.85 266.17 72.68
26 113.40 119.10 116.50 0.00 338.64 338.91 266.03 72.88
27 119.60 121.00 119.00 0.00 338.68 338.48 265.85 72.63
28
29
30
31
TOT308263  789        
AVG 15413 642 39 124.16 123.95 120.80 0.00 338.76 338.77 266.07 72.70
MAX 17632   150.80 144.50 141.00 0.00 339.24 339.31 266.56 73.46
MIN 12733   103.30 101.60 98.80 0.00 338.16 338.41 265.60 71.90
BUILDING STRONG®