US Army Corps of Engineers

The Dalles Dam

September 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 11816 492 48 85.80 84.20 78.40 0.00 159.51 159.53 76.96 82.57
2 12119 505 48 86.10 86.20 80.40 0.00 159.50 159.43 76.75 82.68
3 12066 503 48 84.60 85.20 79.80 0.00 159.41 159.64 76.84 82.80
4 12727 530 48 90.40 90.30 84.50 0.00 159.38 159.59 77.13 82.46
5 10018 417 48 72.20 72.20 66.40 0.00 159.37 159.42 76.68 82.74
6 9667 403 48 69.50 70.10 64.30 0.00 159.30 159.24 76.83 82.41
7 8795 366 48 66.60 64.00 58.20 0.00 159.72 159.54 76.42 83.12
8 10673 445 48 75.10 76.20 70.40 0.00 159.57 159.64 76.54 83.10
9 10415 434 48 75.20 74.90 69.10 0.00 159.65 159.51 76.70 82.81
10 11111 463 48 78.30 79.60 73.80 0.00 159.39 159.45 76.91 82.54
11 9352 390 48 67.90 67.90 62.10 0.00 159.34 159.31 76.74 82.57
12 9950 415 48 70.00 71.60 65.80 0.00 159.08 159.33 76.44 82.89
13 9803 408 48 70.70 70.80 65.00 0.00 159.03 159.08 76.35 82.73
14 9482 395 48 67.20 68.70 62.90 0.00 158.77 159.00 76.19 82.81
15 67.10 66.80 61.00 0.00 158.81 158.77 76.08 82.69
16 68.50 66.60 60.80 0.00 159.20 158.94 76.03 82.91
17 67.90 67.00 61.20 0.00 159.37 159.27 76.07 83.20
18 67.60 68.10 62.30 0.00 159.29 159.30 76.33 82.97
19 71.70 71.20 65.40 0.00 159.37 159.40 76.58 82.82
20 71.10 71.60 65.80 0.00 159.28 159.14 76.71 82.43
21 69.50 71.10 65.30 0.00 158.96 158.94 76.85 82.09
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TOT147994  672        
AVG 10571 440 48 73.48 73.54 67.76 0.00 159.30 159.31 76.58 82.73
MAX 12727   90.40 90.30 84.50 0.00 159.72 159.64 77.13 83.20
MIN 8795   66.60 64.00 58.20 0.00 158.77 158.77 76.03 82.09
BUILDING STRONG®