US Army Corps of Engineers

McNary Dam & Lake Wallula

January 2023

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 12066 503 96 96.00 95.60 93.10 0.00 339.21 339.10 265.81 73.29
2 15027 626 96 112.40 120.10 117.60 0.00 338.78 338.91 266.42 72.49
3 14709 613 96 120.90 117.50 115.00 0.00 338.97 339.08 266.54 72.54
4 13063 544 96 97.90 103.90 101.40 0.00 338.66 338.97 266.00 72.97
5 12478 520 96 102.00 98.90 96.90 0.00 338.80 338.56 265.69 72.87
6 15923 663 96 132.50 125.50 123.70 0.00 339.19 339.26 266.16 73.10
7 13639 568 96 109.20 106.90 105.10 0.00 339.33 339.38 265.97 73.41
8 14019 584 96 114.20 109.70 107.90 0.00 339.55 339.49 266.23 73.26
9 13604 567 96 104.20 107.60 105.80 0.00 339.38 339.42 266.18 73.24
10 15350 640 96 120.90 122.50 120.70 0.00 339.29 339.48 266.33 73.15
11 15914 663 96 132.10 127.50 125.70 0.00 339.57 339.56 266.28 73.28
12 15335 639 96 116.70 122.90 121.10 0.00 339.23 339.21 266.20 73.01
13 13893 579 96 111.40 110.60 108.70 0.00 339.25 339.27 265.91 73.36
14 13818 576 96 110.20 111.40 107.40 0.00 339.21 339.22 266.18 73.04
15 13342 556 96 112.40 107.70 103.70 0.00 339.47 339.44 266.04 73.40
16 13834 576 96 103.30 112.20 108.20 0.00 338.95 339.12 266.14 72.98
17 12694 529 96 108.30 101.80 98.50 0.00 339.33 339.27 265.97 73.30
18 15590 650 96 117.70 126.20 123.40 0.00 338.89 338.95 266.52 72.43
19 14429 601 54 105.70 116.80 114.00 0.00 338.28 338.52 266.36 72.16
20 14805 617 48 126.20 119.20 116.40 0.00 338.65 338.69 266.20 72.49
21 15225 634 48 134.70 123.20 120.40 0.00 339.28 338.85 266.29 72.56
22 110.90 111.50 108.70 0.00 339.26 339.25 265.93 73.32
23 126.40 131.20 128.40 0.00 338.96 339.16 266.42 72.74
24 116.90 114.40 111.60 0.00 339.10 339.26 266.16 73.10
25 118.90 113.20 110.40 0.00 339.41 339.29 266.16 73.13
26 116.00 117.40 114.60 0.00 339.35 339.47 266.27 73.20
27 100.20 100.20 97.40 0.00 339.34 339.28 265.88 73.40
28
29
30
31
TOT298755  1878        
AVG 14226 593 89 114.01 113.91 111.33 0.00 339.14 339.17 266.16 73.01
MAX 15923   134.70 131.20 128.40 0.00 339.57 339.56 266.54 73.41
MIN 12066   96.00 95.60 93.10 0.00 338.28 338.52 265.69 72.16