US Army Corps of Engineers

Ice Harbor Dam

August 2021

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 2810 117 49 23.80 23.40 15.60 6.90 437.85 438.08 338.74 99.34
2 2680 112 52 23.40 22.30 15.00 6.60 438.11 438.14 339.34 98.80
3 3237 135 55 28.20 26.60 18.30 8.00 438.00 438.16 340.10 98.06
4 3374 141 54 28.20 28.40 19.40 8.30 437.87 438.01 340.14 97.87
5 3196 133 54 26.30 27.10 18.30 8.00 437.69 437.92 339.95 97.97
6 2660 111 55 22.50 22.70 15.30 6.70 437.63 437.91 339.40 98.51
7 2600 108 54 23.10 22.30 14.90 6.50 437.83 437.87 339.15 98.72
8 2828 118 54 24.40 24.00 16.20 7.00 437.94 437.96 339.47 98.49
9 437.62
10 437.86
11 2837 118 54 22.20 24.40 16.30 7.20 437.57 437.78 339.54 98.24
12 2814 117 47 24.70 24.00 16.00 7.10 437.73 437.96 339.10 98.86
13 3323 138 39 28.10 28.00 19.00 8.30 437.76 437.93 339.71 98.22
14 3553 148 39 31.50 29.90 20.30 8.90 438.14 437.85 339.91 97.94
15 1988 83 39 21.10 20.60 11.40 8.40 438.27 438.25 339.31 98.94
16 1719 72 39 19.60 18.90 9.90 8.40 438.44 438.36 339.41 98.95
17 1751 73 40 19.90 19.10 10.00 8.50 438.62 438.47 339.23 99.24
18 1864 78 40 22.30 19.80 10.60 8.50 439.23 438.91 338.80 100.11
19 3218 134 40 25.00 27.40 18.20 8.50 438.66 439.10 339.51 99.59
20 2447 102 46 21.20 23.00 14.00 8.50 438.22 438.47 339.35 99.12
21 1685 70 49 19.70 18.80 9.60 8.50 438.42 438.46 338.59 99.87
22 1654 69 49 21.10 18.60 9.30 8.50 439.00 438.73 338.22 100.51
23 2226 93 50 20.10 21.60 12.50 8.50 438.64 439.06 338.54 100.52
24 2833 118 44 23.00 25.40 16.10 8.50 438.07 438.48 339.01 99.47
25 2164 90 40 24.70 21.60 12.30 8.50 438.81 438.65 339.13 99.52
26 1788 74 42 20.20 19.30 10.10 8.50 439.01 438.93 338.84 100.09
27 2416 101 45 22.60 22.90 13.60 8.50 438.95 439.18 338.78 100.40
28 1896 79 45 20.80 19.90 10.80 8.50 439.16 439.16 339.09 100.07
29 2792 116 45 22.90 25.20 15.80 8.50 438.61 439.10 339.63 99.47
30 2379 99 46 23.30 22.60 13.50 8.50 438.79 438.89 339.54 99.35
31 2533 106 46 23.60 23.60 14.30 8.50 438.93 439.06 339.40 99.66
TOT 73266  1351        
AVG 2526 105 47 23.36 23.15 14.37 8.06 438.30 438.44 339.27 99.17
MAX 3553   31.50 29.90 20.30 8.90 439.23 439.18 340.14 100.52
MIN 1654   19.60 18.60 9.30 6.50 437.57 437.78 338.22 97.87