US Army Corps of Engineers

Bonneville Dam & Lake on Columbia River

June 2022

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetProject Average Tailwater2nd Powerhouse Total MWh2nd Powerhouse Flow kcfs
1 15537 647 96 344.90 345.90 185.40 148.10 71.90 72.30 25.30 47.00 24.60 7507 91.00
2 15549 648 96 353.70 347.70 185.60 149.70 72.70 72.40 25.50 46.90 24.70 7497 90.80
3 15404 642 96 347.20 346.20 183.70 150.10 72.70 72.40 25.30 47.10 24.60 7221 87.30
4 16371 682 96 353.30 361.30 198.70 150.20 72.00 72.40 25.90 46.50 25.20 7454 91.30
5 16768 699 96 380.80 374.80 207.10 155.30 72.60 72.50 26.60 45.90 25.90 7960 99.60
6 14628 610 96 401.60 390.60 185.60 192.60 73.70 72.30 27.60 44.70 26.80 7027 90.50
7 15179 632 96 372.40 378.40 189.10 176.90 73.10 72.40 27.00 45.40 26.30 7234 91.20
8 15024 626 96 402.50 396.50 187.10 197.00 73.70 73.30 27.70 45.60 26.90 7023 88.60
9 15179 632 96 416.70 417.70 191.40 213.90 73.60 73.80 28.70 45.10 27.90 7065 90.40
10 15379 641 96 439.90 432.90 197.00 223.50 74.50 74.10 29.60 44.50 28.70 6921 90.30
11 14661 611 96 432.80 441.80 194.40 235.10 73.40 73.50 30.30 43.20 29.40 6420 86.70
12 14564 607 96 446.20 449.20 197.40 239.30 73.10 73.20 30.80 42.40 30.00 6445 88.80
13 13900 579 96 453.90 449.90 189.30 248.20 73.70 73.20 31.00 42.20 30.20 6254 87.10
14 14416 601 96 442.50 436.50 189.70 234.40 74.20 74.00 30.50 43.50 29.70 6479 87.10
15 14744 614 96 436.20 442.20 193.20 236.60 73.70 74.30 30.70 43.60 29.80 6614 88.50
16 14175 591 96 437.90 444.90 192.00 240.50 72.80 73.10 30.80 42.30 29.90 6557 90.80
17 14192 591 96 446.20 434.20 189.70 232.10 74.10 73.20 30.30 42.90 29.50 6412 87.60
18 14225 593 96 435.20 440.20 189.00 238.80 73.40 73.50 30.30 43.20 29.50 6335 86.20
19 14246 594 96 441.90 440.90 190.20 238.30 73.60 73.20 30.30 42.90 29.40 6424 87.80
20 15077 628 96 431.10 428.10 195.10 220.60 74.00 73.90 29.70 44.20 28.90 6790 89.80
21 14972 624 96 435.90 428.90 194.40 222.20 74.60 73.80 29.60 44.20 28.80 6908 91.70
22 15479 645 96 411.00 415.00 195.50 207.10 74.20 74.00 28.90 45.10 28.10 6969 89.60
23 15798 658 96 407.60 407.60 196.60 198.60 74.20 74.10 28.50 45.60 27.70 7029 88.90
24 15805 659 96 407.30 410.30 196.90 201.00 74.00 74.10 28.40 45.70 27.60 7036 89.30
25 408.40 405.40 196.60 196.40 74.20 73.80 28.10 45.70 27.40 89.30
26 404.20 405.20 196.40 196.40 74.00 73.80 28.10 45.70 27.30 88.80
27 401.20 395.20 191.00 191.70 74.70 74.70 27.70 47.00 27.00 81.70
28 394.40 395.40 191.10 191.90 74.70 74.70 27.70 47.00 27.00 81.20
29 379.20 377.20 193.50 171.30 74.90 74.50 27.00 47.50 26.20 82.80
30 365.60 367.60 209.80 145.40 74.30 74.60 26.40 48.20 25.80 98.30
TOT361272  2304           
AVG 15053 627 96 407.72 406.92 193.08 201.44 73.68 73.50 28.48 45.03 27.69 6899 89.10
MAX 16768   453.90 449.90 209.80 248.20 74.90 74.70 31.00 48.20 30.20 7960 99.60
MIN 13900   344.90 345.90 183.70 145.40 71.90 72.30 25.30 42.20 24.60 6254 81.20