US Army Corps of Engineers

Bonneville Dam & Lake on Columbia River

May 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 9588 400 96 238.60 245.60 100.00 133.20 73.70 73.90 19.10 54.80 19.00 7677 80.80
2 11338 472 96 272.60 265.60 120.00 133.20 74.60 74.20 20.30 53.90 20.20 9256 99.10
3 11585 483 96 263.70 266.70 121.70 132.70 74.30 74.60 20.60 54.00 20.40 9104 97.00
4 11785 491 96 275.60 270.60 125.20 132.90 74.70 74.20 20.80 53.40 20.60 8847 95.20
5 11812 492 96 266.20 270.20 125.60 132.20 74.50 74.30 20.80 53.50 20.70 9150 98.50
6 10021 418 96 244.30 250.30 105.30 132.60 73.70 74.20 19.90 54.30 19.90 8477 89.80
7 11813 492 96 275.70 271.70 126.40 133.00 74.20 74.00 20.80 53.20 20.60 8773 95.10
8 13225 551 96 278.90 290.90 146.00 132.50 72.80 73.30 21.90 51.40 21.60 8764 98.30
9 11738 489 96 275.90 272.90 127.50 133.00 73.10 73.50 21.00 52.50 20.90 8939 98.40
10 10585 441 96 258.30 259.30 113.90 133.00 73.00 73.30 20.30 53.00 20.20 8662 94.00
11 12276 512 96 281.00 279.00 133.90 132.70 73.30 73.30 21.20 52.10 21.00 8673 95.80
12 14893 621 96 319.40 313.40 167.80 133.20 73.90 73.20 23.20 50.00 22.70 8506 98.10
13 14836 618 96 308.80 309.80 164.90 132.50 73.60 73.70 23.10 50.60 22.70 8422 95.80
14 16906 704 96 343.00 353.00 198.20 142.40 72.50 73.20 25.30 47.90 24.50 8470 101.40
15 15309 638 96 338.30 331.30 179.00 139.90 73.30 72.60 24.50 48.10 23.90 8255 98.60
16 14901 621 96 301.60 313.60 168.10 133.10 72.20 73.20 23.40 49.80 23.00 8478 97.90
17 14041 585 96 312.60 302.60 157.40 132.80 73.20 73.10 22.90 50.20 22.50 8517 97.40
18 14574 607 96 311.00 305.00 159.60 133.00 73.80 74.10 22.90 51.20 22.50 8310 93.40
19 15536 647 96 332.70 338.70 178.00 148.30 73.10 73.60 24.70 48.90 24.00 7963 93.20
20 16081 670 96 353.10 349.10 188.10 148.60 73.50 73.30 25.40 47.90 24.70 7980 95.40
21 16447 685 96 349.80 354.80 193.60 148.80 73.00 73.50 25.70 47.80 25.00 8151 98.10
22 349.90 340.90 179.80 148.70 73.90 73.50 25.20 48.30 24.50 97.30
23 346.10 336.10 174.80 148.90 75.00 74.70 24.90 49.80 24.30 97.20
24 339.50 344.50 185.10 147.00 74.30 74.60 25.20 49.40 24.50 98.10
25 323.50 328.50 167.90 148.10 73.90 74.20 24.40 49.80 23.90 96.30
26 308.60 323.60 173.10 138.10 72.60 72.70 24.00 48.70 23.50 97.20
27 323.20 313.20 158.90 141.90 73.40 73.10 23.40 49.70 23.00 89.10
28 333.60 322.60 174.20 136.00 74.40 73.60 23.70 49.90 23.20 97.70
29
30
31
TOT279290  2016           
AVG 13300 554 96 304.48 304.41 154.07 137.94 73.62 73.67 22.81 50.86 22.41 8542 95.86
MAX 16906   353.10 354.80 198.20 148.90 75.00 74.70 25.70 54.80 25.00 9256 101.40
MIN 9588   238.60 245.60 100.00 132.20 72.20 72.60 19.10 47.80 19.00 7677 80.80