US Army Corps of Engineers

The Dalles Dam

December 2025

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feet
1 17879 745 48 118.40 124.00 118.20 0.00 157.42 158.32 75.35 82.97
2 17576 732 48 121.70 123.60 117.70 0.00 157.08 157.98 76.15 81.83
3 16515 688 48 122.80 116.60 110.70 0.00 158.27 157.79 76.08 81.71
4 18543 773 48 131.20 128.50 122.70 0.00 158.78 158.79 76.01 82.78
5 19561 815 48 135.40 134.30 128.50 0.00 159.00 158.97 75.86 83.11
6 20680 862 48 142.60 143.60 137.80 0.00 158.79 158.75 76.73 82.02
7 20296 846 48 140.60 141.70 135.80 0.00 158.55 158.93 77.16 81.77
8 19387 808 48 134.50 135.20 129.40 0.00 158.42 159.00 77.04 81.96
9 18221 759 48 131.50 127.80 121.90 0.00 159.12 158.75 77.00 81.75
10 21235 885 48 150.00 149.70 143.80 0.00 159.15 159.05 78.37 80.68
11 22095 921 48 153.00 149.70 143.80 0.00 158.80 159.01 78.01 81.00
12 24911 1038 48 166.90 172.10 166.30 0.00 157.86 158.91 76.80 82.11
13 25667 1069 48 177.70 178.20 172.40 0.00 157.74 157.81 76.41 81.40
14 25591 1066 48 178.90 177.90 172.10 0.00 157.95 157.88 76.62 81.26
15 24830 1035 48 174.60 172.30 166.40 0.00 158.37 158.36 76.76 81.60
16 26171 1090 48 177.00 177.50 176.40 0.00 158.28 158.41 77.20 81.21
17 25804 1075 48 179.50 181.50 174.70 5.60 157.87 158.55 77.43 81.12
18 30804 1284 48 218.70 219.30 218.30 0.00 157.77 157.66 78.88 78.78
19 29716 1238 48 213.20 209.80 208.70 0.00 158.42 158.79 79.68 79.11
20 29901 1246 48 209.70 207.70 206.60 0.00 158.78 158.64 78.42 80.22
21 29364 1224 48 199.20 202.50 201.40 0.00 158.19 158.66 78.11 80.55
22 27784 1158 48 195.00 193.20 192.10 0.00 158.54 158.45 78.71 79.74
23 26723 1113 48 185.60 187.10 186.10 0.00 158.22 158.40 79.37 79.03
24 26587 1108 48 182.60 184.60 183.50 0.00 157.88 157.95 78.30 79.65
25 27055 1127 48 189.20 185.80 184.70 0.00 158.51 158.17 77.77 80.40
26 27884 1162 48 189.10 193.00 192.00 0.00 157.77 158.18 78.21 79.97
27 27329 1139 48 189.70 189.00 187.90 0.00 157.91 157.95 77.87 80.08
28 28705 1196 48 201.70 199.40 198.30 0.00 158.34 158.18 78.26 79.92
29 28757 1198 48 205.10 200.90 199.90 0.00 159.14 158.59 79.02 79.57
30 26937 1122 48 188.30 186.10 185.00 0.00 159.60 159.07 79.09 79.98
31 28145 1173 48 188.40 194.50 193.50 0.00 158.39 158.90 78.56 80.34
TOT760653  1488        
AVG 24537 1022 48 170.70 170.55 166.99 0.18 158.35 158.48 77.59 80.89
MAX 30804   218.70 219.30 218.30 5.60 159.60 159.07 79.68 83.11
MIN 16515   118.40 116.60 110.70 0.00 157.08 157.66 75.35 78.78
BUILDING STRONG®