US Army Corps of Engineers

Priest Rapids Dam

Sunday September 20, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage Head
1 44.30 41.53 2.36 485.73 402.63 83.10
2 43.00 40.06 2.38 485.75 402.58 83.17
3 45.20 42.22 2.35 485.57 402.91 82.66
4 43.10 40.27 2.25 485.27 402.56 82.71
5 42.30 39.62 2.16 485.09 402.57 82.52
6 43.40 40.77 2.07 484.86 402.59 82.26
7 42.50 39.98 2.01 484.80 402.64 82.15
8 43.20 40.62 2.01 484.72 402.66 82.06
9 43.20 40.70 1.94 484.51 402.68 81.84
10 43.20 40.73 1.89 484.45 402.74 81.71
11 42.70 40.23 1.88 484.42 402.59 81.83
12 42.50 40.06 1.90 484.47 402.57 81.90
13 42.60 40.10 1.89 484.42 402.60 81.82
14 43.10 40.62 1.88 484.43 402.62 81.81
15 42.80 40.37 1.92 484.49 402.65 81.84
16 43.10 40.62 1.89 484.45 402.54 81.91
17 42.70 40.17 1.94 484.60 402.63 81.97
18 44.60 42.04 1.95 484.69 403.19 81.50
19 44.50 41.83 2.07 485.24 402.64 82.60
20 54.80 51.84 2.29 485.71 404.89 80.82
21 57.70 54.50 2.44 486.01 404.49 81.52
22 64.30 61.20 2.46 485.88 405.18 80.70
23 69.90 66.87 2.38 485.61 404.86 80.75
24 53.50 50.73 2.27 485.30 403.75 81.55
AVG 46.76 44.07 2.11 485.02 403.07 81.95
MAX 69.90 66.87 2.46 486.01 405.18 83.17
MIN 42.30 39.62 1.88 484.42 402.54 80.70
BUILDING STRONG®