US Army Corps of Engineers

Bonneville Dam & Lake on Columbia River

February 2020

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 15605 650 96 155.00 152.00 147.90 0.60 74.90 74.60 15.30 59.30 15.40 11255 103.70
2 16343 681 96 158.60 158.60 154.50 0.60 74.70 74.60 15.30 59.30 15.30 10769 103.20
3 17727 739 88 162.40 172.40 168.30 0.60 73.70 74.20 15.90 58.30 15.70 90.00
4 17633 735 96 198.60 180.60 169.20 7.90 75.50 74.50 16.50 58.00 16.10 7932 77.90
5 20656 861 96 188.90 205.90 201.90 0.60 73.70 74.40 17.70 56.70 17.30 11512 114.40
6 20516 855 96 206.30 213.30 209.30 0.50 72.90 73.00 18.40 54.60 18.10 11652 121.10
7 21376 891 96 227.80 224.80 220.70 0.60 73.20 73.40 19.30 54.10 19.00 12530 132.10
8 22358 932 96 248.90 235.90 231.90 0.60 74.70 74.40 20.20 54.20 19.90 13486 142.80
9 22566 940 96 231.80 240.80 236.80 0.60 73.70 74.10 20.40 53.70 20.10 13718 147.00
10 22085 920 96 234.30 233.30 229.80 0.00 73.70 73.80 19.80 54.00 19.50 13143 139.50
11 20746 864 96 211.80 217.80 214.30 0.00 73.10 73.30 18.90 54.40 18.60 10535 109.70
12 20298 846 96 218.50 204.50 200.80 0.20 74.70 74.00 17.90 56.10 17.60 10739 107.90
13 20425 851 96 208.10 203.10 198.80 0.60 75.10 74.70 17.70 57.00 17.30 10718 105.90
14 20699 862 96 204.00 209.00 204.50 0.60 74.60 74.10 17.90 56.20 17.60 10855 108.80
15 21160 882 96 209.60 216.60 212.10 0.60 73.80 73.80 18.20 55.60 17.80 11097 112.60
16 18259 761 96 176.80 182.80 178.20 0.60 73.40 73.70 16.40 57.30 16.20 10354 102.80
17 202.10 194.10 189.60 0.60 74.20 73.70 16.80 56.90 16.40 108.50
18 206.70 205.70 201.20 0.60 74.30 74.10 17.40 56.70 17.00 111.10
19 185.30 189.30 184.80 0.60 73.90 73.90 16.40 57.50 16.00 98.90
20 173.70 171.70 167.20 0.60 74.10 73.80 15.00 58.80 14.80 94.90
21 170.80 171.80 167.30 0.60 74.00 73.90 15.20 58.70 15.00 97.30
22 162.90 163.90 159.30 0.60 74.00 73.70 14.80 58.90 14.60 97.40
23 142.60 141.60 137.10 0.60 74.20 73.90 13.40 60.50 13.40 98.20
24
25
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29
TOT318452  1528           
AVG 19903 829 96 195.02 195.20 190.67 0.84 74.09 73.98 17.17 56.82 16.90 11353 109.81
MAX 22566   248.90 240.80 236.80 7.90 75.50 74.70 20.40 60.50 20.10 13718 147.00
MIN 15605   142.60 141.60 137.10 0.00 72.90 73.00 13.40 53.70 13.40 7932 77.90