US Army Corps of Engineers

Bonneville Dam & Lake on Columbia River

May 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 3729 155 96 163.80 159.80 35.10 112.40 73.10 72.80 13.90 58.90 14.00 3729 35.10
2 3599 150 96 163.90 162.90 33.80 116.70 73.30 73.20 14.00 59.20 14.10 3599 33.80
3 3558 148 96 165.90 163.90 33.30 118.20 73.50 73.70 14.10 59.60 14.10 3558 33.30
4 3903 163 96 166.70 179.70 37.90 129.40 72.10 72.70 15.50 57.20 15.50 3903 37.90
5 4076 170 96 166.50 167.50 39.50 115.60 72.10 72.10 15.10 57.00 15.10 4076 39.50
6 3730 155 96 165.90 151.90 35.40 104.10 73.60 72.80 14.40 58.40 14.50 3730 35.40
7 3571 149 96 148.80 152.80 33.70 106.60 73.10 73.10 14.40 58.70 14.50 3571 33.70
8 3960 165 96 165.90 164.90 38.10 114.40 73.20 73.00 15.10 57.90 15.10 3960 38.10
9 3677 153 96 168.50 167.50 35.60 119.50 73.30 72.90 15.00 57.90 15.10 3677 35.60
10 3429 143 96 189.60 186.60 34.00 140.10 73.50 73.30 15.90 57.40 16.00 3429 34.00
11 3838 160 96 181.80 193.80 38.80 142.60 72.30 72.60 16.50 56.10 16.50 3838 38.80
12 3999 167 96 181.40 178.40 39.10 126.90 72.60 72.20 15.60 56.60 15.60 3999 39.10
13 180.40 180.40 39.80 128.30 72.60 72.50 15.50 57.00 15.50 39.80
14 213.10 209.10 53.10 143.60 73.10 72.60 17.10 55.50 17.00 53.10
15 240.60 239.60 78.50 148.70 73.20 72.60 19.00 53.60 19.00 78.50
16 249.50 239.50 77.90 149.30 74.30 73.00 19.00 54.00 18.90 77.90
17 226.70 239.70 77.80 149.50 73.00 73.10 19.10 54.00 19.00 77.80
18 234.30 237.30 75.80 149.00 72.70 72.70 18.90 53.80 18.80 75.80
19 254.60 238.60 77.10 149.10 74.30 72.90 18.90 54.00 18.80 77.10
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TOT 45069  1152           
AVG 3756 156 96 190.94 190.21 48.12 129.68 73.10 72.83 16.16 56.67 16.16 3756 48.12
MAX 4076   254.60 239.70 78.50 149.50 74.30 73.70 19.10 59.60 19.00 4076 78.50
MIN 3429   148.80 151.90 33.30 104.10 72.10 72.10 13.90 53.60 14.00 3429 33.30