Bonneville Dam & Lake on Columbia River
September 2023
| Day of Month | Total Generation MWh | Average Generation MW | Station Use MWh | Inflow kcfs | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | Midnight Reservoir Elevation | Average Forebay Elevation | Average Tailwater Elevation | Average Head feet | Project Average Tailwater | 2nd Powerhouse Total MWh | 2nd Powerhouse Flow kcfs |
|---|
| 1 | 11190 | 466 | 96 | 101.20 | 107.20 | 97.20 | 2.40 | 75.70 | 75.40 | 10.50 | 64.90 | 10.70 | 8821 | 77.30 |
| 2 | 10524 | 438 | 96 | 94.30 | 99.30 | 90.40 | 1.50 | 75.10 | 75.30 | 9.50 | 65.80 | 9.70 | 9550 | 82.40 |
| 3 | 10126 | 422 | 96 | 99.70 | 95.70 | 86.80 | 1.50 | 75.50 | 75.00 | 9.20 | 65.80 | 9.40 | 8453 | 73.00 |
| 4 | 9905 | 413 | 96 | 87.10 | 93.20 | 84.30 | 1.50 | 75.00 | 75.00 | 8.90 | 66.10 | 9.10 | 7627 | 65.70 |
| 5 | 9551 | 398 | 96 | 90.00 | 89.00 | 80.20 | 1.40 | 75.00 | 74.70 | 8.60 | 66.10 | 8.70 | 4562 | 39.40 |
| 6 | 9200 | 383 | 96 | 89.50 | 84.50 | 76.10 | 0.90 | 75.50 | 75.00 | 8.10 | 66.90 | 8.30 | 4508 | 38.70 |
| 7 | 8819 | 367 | 96 | 83.20 | 81.20 | 72.30 | 1.50 | 75.70 | 75.50 | 7.60 | 67.90 | 7.80 | 4656 | 39.40 |
| 8 | 8876 | 370 | 96 | 81.20 | 81.20 | 72.40 | 1.50 | 75.70 | 75.60 | 7.40 | 68.20 | 7.60 | 4789 | 40.20 |
| 9 | 8917 | 372 | 96 | 84.30 | 81.30 | 72.30 | 1.60 | 76.00 | 75.80 | 7.30 | 68.50 | 7.50 | 4668 | 39.10 |
| 10 | 9396 | 392 | 96 | 82.50 | 85.50 | 76.60 | 1.50 | 75.70 | 75.80 | 7.80 | 68.00 | 8.00 | 4630 | 39.10 |
| 11 | 8303 | 346 | 96 | 73.00 | 77.00 | 68.10 | 1.50 | 75.20 | 75.10 | 7.30 | 67.80 | 7.50 | 4658 | 39.40 |
| 12 | 8536 | 356 | 96 | 86.00 | 79.00 | 70.20 | 1.50 | 75.70 | 75.20 | 7.40 | 67.80 | 7.60 | 4647 | 39.40 |
| 13 | 8961 | 373 | 96 | 84.60 | 82.60 | 73.70 | 1.50 | 75.80 | 75.40 | 7.80 | 67.60 | 8.00 | 4627 | 39.30 |
| 14 | 10577 | 441 | 96 | 96.20 | 96.20 | 87.30 | 1.50 | 75.70 | 75.60 | 8.70 | 66.90 | 8.80 | 4736 | 40.40 |
| 15 | 9324 | 388 | 96 | 88.60 | 85.60 | 76.70 | 1.50 | 76.20 | 75.50 | 8.00 | 67.50 | 8.20 | 4596 | 39.20 |
| 16 | 9042 | 377 | 96 | 71.00 | 83.00 | 74.10 | 1.50 | 75.00 | 75.50 | 7.90 | 67.60 | 8.10 | 4574 | 38.90 |
| 17 | 7712 | 321 | 96 | 75.50 | 72.50 | 63.70 | 1.40 | 75.30 | 74.90 | 7.10 | 67.80 | 7.40 | 4532 | 38.60 |
| 18 | 7704 | 321 | 96 | 73.80 | 71.80 | 63.00 | 1.40 | 75.50 | 75.40 | 6.90 | 68.50 | 7.20 | 4820 | 40.40 |
| 19 | 7818 | 326 | 96 | 74.70 | 72.70 | 63.90 | 1.40 | 75.70 | 75.40 | 7.00 | 68.40 | 7.20 | 4586 | 38.70 |
| 20 | | | | 83.30 | 77.30 | 68.50 | 1.40 | 76.30 | 75.70 | 7.20 | 68.50 | 7.40 | | 39.10 |
| 21 | | | | 81.40 | 86.40 | 77.60 | 1.40 | 75.80 | 75.90 | 7.80 | 68.10 | 8.00 | | 51.10 |
| 22 | | | | 76.40 | 74.40 | 65.70 | 1.40 | 76.00 | 75.80 | 7.10 | 68.70 | 7.00 | | 65.50 |
| 23 | | | | 76.80 | 80.80 | 72.00 | 1.40 | 75.60 | 75.60 | 7.60 | 68.00 | 7.40 | | 72.00 |
| 24 | | | | 82.20 | 77.20 | 68.40 | 1.40 | 76.20 | 75.80 | 7.20 | 68.60 | 7.10 | | 68.40 |
| 25 | | | | 73.50 | 73.50 | 64.70 | 1.30 | 76.10 | 76.00 | 7.20 | 68.80 | 7.20 | | 64.70 |
| 26 | | | | 75.70 | 75.70 | 67.60 | 1.40 | 76.10 | 76.00 | 7.50 | 68.50 | 7.70 | | 66.40 |
| 27 | | | | | | | | | | | | | | |
| 28 | | | | | | | | | | | | | | |
| 29 | | | | | | | | | | | | | | |
| 30 | | | | | | | | | | | | | | |
|
| TOT | 174481 | | 1824 | | | | | | | | | | | |
| AVG | 9183 | 383 | 96 | 83.30 | 83.22 | 74.38 | 1.47 | 75.66 | 75.46 | 7.87 | 67.59 | 8.02 | 5476 | 50.61 |
|
| MAX | 11190 | | | 101.20 | 107.20 | 97.20 | 2.40 | 76.30 | 76.00 | 10.50 | 68.80 | 10.70 | 9550 | 82.40 |
| MIN | 7704 | | | 71.00 | 71.80 | 63.00 | 0.90 | 75.00 | 74.70 | 6.90 | 64.90 | 7.00 | 4508 | 38.60 |