US Army Corps of Engineers

Priest Rapids Dam & Reservoir

March 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 18144 756 38 142.40 139.80 139.30 0.00 487.07 486.40 412.40 74.00
2 17273 720 39 126.50 131.20 130.70 0.00 485.78 486.25 411.75 74.50
3 16909 705 39 131.40 130.90 129.00 1.00 485.92 485.83 411.67 74.16
4 15112 630 38 115.60 114.70 113.60 0.00 486.18 485.10 410.34 74.76
5 15026 626 38 117.10 114.40 113.30 0.00 486.91 484.82 410.30 74.52
6 16215 676 38 133.70 131.30 121.50 8.60 487.53 486.84 411.64 75.20
7 14957 623 38 141.70 145.90 113.90 30.80 486.38 486.66 412.47 74.19
8 485.68
9 485.82
10 485.47
11 487.01
12 485.68
13 485.70
14 486.19
15 485.23
16 487.25
17 487.24
18 486.65
19 486.58
20 487.50
21 486.49
22 485.73
23 485.81
24 485.27
25 485.77
26 485.99
27 487.11
28 486.57
29 484.44
30 487.12
31 487.12
TOT113636  268        
AVG 16234 676 38 129.77 129.74 123.04 5.77 486.30 485.99 411.51 74.48
MAX 18144   142.40 145.90 139.30 30.80 487.53 486.84 412.47 75.20
MIN 14957   115.60 114.40 113.30 0.00 484.44 484.82 410.30 74.00