US Army Corps of Engineers

Bonneville Dam & Lake on Columbia River

March 2024

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 13802 575 96 145.50 139.50 127.30 1.30 74.60 74.30 13.80 60.50 13.90 12616 116.70
2 13823 576 96 140.80 139.80 128.30 1.30 74.60 74.10 14.00 60.10 14.10 12655 117.80
3 13324 555 96 140.90 130.90 121.30 1.40 75.60 74.70 13.20 61.50 13.40 12218 111.60
4 13706 571 96 137.00 132.00 122.80 1.40 76.10 75.70 12.80 62.90 13.00 12548 112.90
5 13300 554 96 126.20 130.20 118.80 3.60 75.80 75.80 12.60 63.20 12.70 12151 109.00
6 13279 553 96 130.00 127.00 117.80 1.40 76.00 75.70 12.10 63.60 12.30 12107 107.80
7 13787 574 96 126.40 132.40 123.10 1.40 75.40 75.50 12.40 63.10 12.60 12638 113.40
8 13507 563 96 129.40 129.40 120.30 1.40 75.40 75.30 12.10 63.20 12.30 12454 111.40
9 12829 535 96 114.00 125.00 115.00 1.40 74.30 74.40 12.10 62.30 12.30 11779 106.00
10 11598 483 96 117.80 118.80 108.60 1.50 74.20 74.00 11.90 62.10 12.20 10613 99.70
11 13066 544 96 129.10 131.10 119.30 1.30 73.70 73.80 12.90 60.90 13.10 11973 109.60
12 13427 559 96 131.70 134.70 124.30 1.40 73.50 73.30 13.50 59.80 13.60 12345 114.60
13 13204 550 96 128.10 133.10 121.90 1.60 73.20 73.10 13.30 59.80 13.40 12121 112.20
14 13277 553 96 137.60 131.60 121.50 1.50 73.60 73.30 12.80 60.50 13.00 12194 111.90
15 13524 564 96 137.80 132.80 122.70 1.40 74.20 73.80 12.50 61.30 12.70 12441 113.30
16 13955 581 96 131.70 137.70 127.20 1.50 73.60 73.70 12.70 61.00 12.90 12864 117.60
17 14149 590 96 137.40 140.40 130.00 1.40 73.30 73.40 12.90 60.50 13.00 12987 119.50
18 14025 584 96 133.90 139.90 129.30 1.50 72.70 72.80 12.80 60.00 12.90 12875 118.90
19 13600 567 96 142.40 135.40 124.90 1.50 73.50 72.60 12.60 60.00 12.70 12480 114.80
20 147.90 140.90 128.30 1.50 74.20 73.80 12.90 60.90 13.00 118.10
21 143.40 141.40 127.60 1.40 74.30 74.10 13.00 61.10 13.10 117.50
22 160.80 154.80 128.50 13.90 75.10 74.50 13.80 60.70 13.90 118.30
23 163.30 163.30 130.30 20.60 75.00 74.90 14.60 60.30 14.60 120.20
24 145.70 165.70 132.80 20.40 72.80 73.80 14.90 58.90 14.90 123.10
25 162.10 154.10 132.80 8.90 74.10 72.90 14.30 58.60 14.40 123.00
26 138.60 143.60 129.70 1.40 73.30 73.50 13.60 59.90 13.70 120.10
27 75.20
28
29
30
31
TOT255182  1824           
AVG 13431 560 96 137.67 137.90 124.40 3.74 74.34 74.11 13.08 61.03 13.22 12319 114.58
MAX 14149   163.30 165.70 132.80 20.60 76.10 75.80 14.90 63.60 14.90 12987 123.10
MIN 11598   114.00 118.80 108.60 1.30 72.70 72.60 11.90 58.60 12.20 10613 99.70