US Army Corps of Engineers

The Dalles Dam

August 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 9444 394 48 115.50 114.50 63.70 45.00 159.18 158.85 77.44 81.41
2 9465 394 48 114.20 114.40 63.60 45.00 159.15 159.06 77.35 81.71
3 9066 378 48 112.10 111.40 60.60 45.00 159.24 159.31 77.18 82.13
4 9392 391 48 111.90 113.80 63.00 45.00 158.92 158.84 76.91 81.93
5 9993 416 48 117.70 117.60 66.80 45.00 158.91 159.01 76.87 82.14
6 10245 427 48 122.90 121.30 68.50 47.00 159.23 159.08 76.92 82.16
7 9821 409 48 117.20 121.20 66.40 49.00 158.46 158.74 77.29 81.45
8 9157 382 48 116.50 117.10 62.30 49.00 158.31 158.09 77.33 80.76
9 9108 380 48 114.80 114.70 61.90 47.00 158.35 158.17 77.32 80.85
10 8312 346 48 110.00 108.10 56.30 46.00 158.74 158.48 77.22 81.26
11 8860 369 48 109.00 108.50 59.70 43.00 158.79 158.35 76.83 81.52
12 8805 367 48 110.20 108.20 59.40 43.00 159.18 158.49 76.95 81.54
13 8740 364 48 107.20 107.60 58.80 43.00 159.07 158.99 77.27 81.72
14 8311 346 48 102.30 104.80 56.00 43.00 158.60 158.82 77.18 81.64
15 9481 395 48 112.10 111.90 64.10 42.00 158.69 158.62 77.32 81.30
16 8097 337 48 109.90 105.30 54.50 45.00 159.48 158.67 77.15 81.52
17 8834 368 48 105.30 107.00 59.10 42.00 159.18 159.15 77.09 82.06
18 8070 336 48 105.50 99.10 54.40 38.90 159.65 158.92 77.20 81.72
19 9055 377 48 104.90 106.60 60.40 40.30 159.36 159.47 77.24 82.23
20 8969 374 48 108.90 108.10 60.30 42.00 159.48 158.88 77.17 81.71
21 9030 376 48 106.80 109.60 60.80 43.00 159.00 158.78 77.11 81.67
22 8276 345 48 106.50 105.70 55.90 44.00 159.14 158.36 77.02 81.34
23 7953 331 48 94.40 90.70 52.90 31.90 159.79 159.18 76.57 82.61
24 9186 383 48 99.60 102.70 60.90 36.00 159.22 159.32 76.19 83.13
25 9804 408 48 113.00 112.10 65.30 41.00 159.44 159.03 76.62 82.41
26 10270 428 48 117.70 119.70 68.90 45.00 159.05 159.20 77.16 82.04
27 8033 335 48 102.00 99.60 53.60 40.20 159.49 159.11 76.73 82.38
28 12032 501 48 125.30 126.30 80.50 40.00 159.28 159.46 77.39 82.07
29 7863 328 48 89.30 92.40 52.60 34.00 158.72 158.91 76.56 82.35
30 7826 326 48 91.40 86.80 52.00 29.00 159.63 159.19 76.35 82.84
31 7938 331 48 90.20 92.10 52.70 33.60 159.22 159.48 76.52 82.96
TOT279436  1488        
AVG 9014 376 48 108.53 108.35 60.51 42.03 159.10 158.90 77.01 81.89
MAX 12032   125.30 126.30 80.50 49.00 159.79 159.48 77.44 83.13
MIN 7826   89.30 86.80 52.00 29.00 158.31 158.09 76.19 80.76
BUILDING STRONG®