US Army Corps of Engineers

Priest Rapids Dam & Reservoir

February 2026

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 16485 687 28 126.90 136.00 127.10 7.90 485.06 486.34 411.66 74.68
2 16334 681 33 128.50 126.60 125.80 0.00 485.57 485.59 411.06 74.53
3 15954 665 37 132.40 125.90 121.00 4.30 487.34 486.18 410.95 75.23
4 17502 729 40 147.30 147.90 135.90 11.50 487.17 487.02 412.62 74.40
5 17611 734 40 134.90 143.10 136.90 5.60 484.91 486.31 412.24 74.07
6 16098 671 40 128.30 124.40 123.90 0.00 486.01 485.51 410.84 74.67
7 15952 665 38 118.10 124.80 124.20 0.00 484.12 484.60 410.92 73.68
8 14062 586 38 111.30 107.20 106.70 0.00 485.28 484.38 409.44 74.94
9 15817 659 36 128.50 120.70 118.60 1.30 487.44 486.57 410.55 76.02
10 17877 745 37 139.90 147.30 139.00 7.50 485.42 486.57 412.59 73.98
11 17966 749 41 144.90 140.50 140.00 0.00 486.64 486.03 412.30 73.73
12 18849 785 42 144.60 149.20 148.60 0.00 485.38 486.11 412.99 73.12
13 17212 717 42 134.00 133.20 132.70 0.00 485.59 485.66 411.70 73.96
14 17517 730 41 135.30 136.20 135.70 0.00 485.32 485.71 412.00 73.71
15 16627 693 39 128.70 129.00 128.40 0.00 485.24 485.61 411.39 74.22
16 16866 703 39 133.90 129.50 129.00 0.00 486.47 486.06 411.39 74.67
17 19150 798 38 154.40 151.20 150.50 0.00 487.32 486.54 413.17 73.37
18 19190 800 39 146.60 151.20 150.50 0.00 486.06 486.67 413.28 73.39
19 18713 780 41 147.80 148.40 147.90 0.00 485.90 486.05 413.07 72.98
20 17594 733 40 140.60 137.90 137.30 0.00 486.65 486.33 412.07 74.26
21 16967 707 39 132.40 129.20 128.60 0.00 487.52 487.10 411.33 75.77
22 18284 762 39 152.70 154.00 142.00 11.40 487.16 487.37 413.27 74.10
23 18996 792 40 161.40 159.90 148.50 10.80 487.56 487.32 413.85 73.47
24 19796 825 40 164.60 165.00 155.90 8.50 487.46 487.55 414.25 73.30
25 17403 725 40 143.70 147.70 135.40 11.60 486.39 486.97 412.81 74.16
26 17079 712 40 144.80 140.60 129.30 10.80 487.51 487.12 412.35 74.77
27 16390 683 36 134.20 135.80 125.40 9.70 487.11 487.24 411.81 75.43
28 18046 752 35 137.20 139.90 139.20 0.00 486.37 486.07 412.44 73.63
TOT486337  1078        
AVG 17369 724 38 138.50 138.65 134.43 3.60 486.28 486.31 412.08 74.22
MAX 19796   164.60 165.00 155.90 11.60 487.56 487.55 414.25 76.02
MIN 14062   111.30 107.20 106.70 0.00 484.12 484.38 409.44 72.98
BUILDING STRONG®