Bonneville Dam
Saturday October 9, 2021
| Hour | Total Outflow kcfs | Generation Flow kcfs | Spill kcfs | PH 1 Forebay Elevation | Tailwater Elevation | Average Head | Project Forebay Elevation | Stevenson Gage Elevation | Project Tailwater Elevation |
|---|
| 1 | 90.20 | 82.80 | 0.00 | 75.70 | 10.10 | 65.60 | 75.50 | 75.90 | 10.10 |
| 2 | 76.70 | 69.30 | 0.00 | 75.80 | 9.20 | 66.60 | 75.60 | 75.90 | 9.30 |
| 3 | 75.50 | 68.10 | 0.00 | 75.70 | 8.90 | 66.80 | 75.50 | 75.80 | 8.90 |
| 4 | 75.40 | 68.00 | 0.00 | 75.50 | 8.70 | 66.80 | 75.40 | 75.80 | 8.60 |
| 5 | 74.60 | 67.20 | 0.00 | 75.50 | 8.40 | 67.10 | 75.30 | 75.80 | 8.50 |
| 6 | 84.40 | 77.00 | 0.00 | 75.60 | 8.70 | 66.90 | 75.40 | 75.80 | 8.70 |
| 7 | 85.40 | 78.00 | 0.00 | 75.40 | 8.50 | 66.90 | 75.20 | 75.58 | 8.50 |
| 8 | 97.00 | 88.20 | 1.40 | 75.30 | 9.10 | 66.20 | 75.10 | 75.60 | 9.10 |
| 9 | 98.40 | 88.70 | 2.30 | 75.30 | 9.10 | 66.20 | 75.10 | 75.60 | 9.00 |
| 10 | 98.60 | 88.90 | 2.30 | 75.30 | 9.30 | 66.00 | 75.00 | 75.50 | 9.30 |
| 11 | 99.00 | 89.30 | 2.30 | 75.10 | 9.60 | 65.50 | 74.90 | 75.40 | 9.70 |
| 12 | 100.20 | 90.50 | 2.30 | 75.00 | 9.60 | 65.40 | 74.80 | 75.30 | 9.70 |
| 13 | 97.70 | 88.00 | 2.30 | 74.90 | 9.50 | 65.40 | 74.70 | 75.20 | 9.50 |
| 14 | 97.10 | 87.40 | 2.30 | 74.90 | 9.40 | 65.50 | 74.70 | 75.20 | 9.40 |
| 15 | 97.10 | 87.40 | 2.30 | 74.80 | 9.30 | 65.50 | 74.60 | 75.10 | 9.30 |
| 16 | 78.90 | 69.20 | 2.30 | 75.00 | 8.20 | 66.80 | 74.80 | 75.20 | 8.00 |
| 17 | 77.30 | 67.60 | 2.30 | 74.90 | 8.00 | 66.90 | 74.70 | 75.10 | 7.90 |
| 18 | 77.50 | 67.80 | 2.30 | 74.90 | 7.80 | 67.10 | 74.70 | 75.10 | 7.70 |
| 19 | 76.80 | 67.10 | 2.30 | 74.90 | 7.60 | 67.30 | 74.80 | 75.10 | 7.40 |
| 20 | 74.30 | 65.70 | 1.20 | 75.00 | 7.50 | 67.50 | 74.90 | 75.30 | 7.40 |
| 21 | 73.10 | 65.70 | 0.00 | 75.10 | 8.00 | 67.10 | 74.90 | 75.30 | 8.00 |
| 22 | 73.60 | 66.20 | 0.00 | 75.00 | 8.80 | 66.20 | 74.90 | 75.30 | 8.80 |
| 23 | 74.70 | 67.30 | 0.00 | 74.90 | 9.20 | 65.70 | 74.80 | 75.20 | 9.20 |
| 24 | 74.90 | 67.50 | 0.00 | 74.80 | 9.00 | 65.80 | 74.60 | 75.10 | 9.00 |
|
| AVG | 84.52 | 75.95 | 1.16 | 75.18 | 8.81 | 66.37 | 75.00 | 75.42 | 8.79 |
|
| MAX | 100.20 | 90.50 | 2.30 | 75.80 | 10.10 | 67.50 | 75.60 | 75.90 | 10.10 |
| MIN | 73.10 | 65.70 | 0.00 | 74.80 | 7.50 | 65.40 | 74.60 | 75.10 | 7.40 |
| |
Powerhouse 1 |
Powerhouse 2 |
Project |
| Hour | Generation Flow kcfs | Forebay Elevation | Forebay Elevation | Generation Flow kcfs | Spillway Gates in Use | Miscellaneous Flow kcfs* |
|---|
| 1 | 0.80 | 75.7 | 75.5 | 82.00 | 0 | 7.4 |
| 2 | 0.80 | 75.8 | 75.6 | 68.50 | 0 | 7.4 |
| 3 | 0.80 | 75.7 | 75.5 | 67.30 | 0 | 7.4 |
| 4 | 0.80 | 75.5 | 75.4 | 67.20 | 0 | 7.4 |
| 5 | 0.80 | 75.5 | 75.3 | 66.40 | 0 | 7.4 |
| 6 | 0.80 | 75.6 | 75.4 | 76.20 | 0 | 7.4 |
| 7 | 0.70 | 75.4 | 75.2 | 77.30 | 0 | 7.4 |
| 8 | 0.80 | 75.3 | 75.1 | 87.40 | 2 | 7.4 |
| 9 | 0.70 | 75.3 | 75.1 | 88.00 | 2 | 7.4 |
| 10 | 0.80 | 75.3 | 75.0 | 88.10 | 2 | 7.4 |
| 11 | 0.80 | 75.1 | 74.9 | 88.50 | 2 | 7.4 |
| 12 | 0.80 | 75.0 | 74.8 | 89.70 | 2 | 7.4 |
| 13 | 0.80 | 74.9 | 74.7 | 87.20 | 2 | 7.4 |
| 14 | 0.80 | 74.9 | 74.7 | 86.60 | 2 | 7.4 |
| 15 | 0.80 | 74.8 | 74.6 | 86.60 | 2 | 7.4 |
| 16 | 0.70 | 75.0 | 74.8 | 68.50 | 2 | 7.4 |
| 17 | 0.80 | 74.9 | 74.7 | 66.80 | 2 | 7.4 |
| 18 | 0.80 | 74.9 | 74.7 | 67.00 | 2 | 7.4 |
| 19 | 0.80 | 74.9 | 74.8 | 66.30 | 2 | 7.4 |
| 20 | 0.80 | 75.0 | 74.9 | 64.90 | 0 | 7.4 |
| 21 | 0.80 | 75.1 | 74.9 | 64.90 | 0 | 7.4 |
| 22 | 0.80 | 75.0 | 74.9 | 65.40 | 0 | 7.4 |
| 23 | 0.80 | 74.9 | 74.8 | 66.50 | 0 | 7.4 |
| 24 | 0.70 | 74.8 | 74.6 | 66.80 | 0 | 7.4 |
|
| AVG | 0.78 | 75.2 | 75.0 | 75.17 | 1 | 7.4 |
|
| MAX | 0.80 | 75.8 | 75.6 | 89.70 | 2 | 7.4 |
| MIN | 0.70 | 74.8 | 74.6 | 64.90 | 0 | 7.4 |
* Miscellaneous Flow includes fish ladders, PH1 sluiceway, navigation lock,
PH2 DSM, UMT, and PH2 corner collector (B2CC). When all routes are in
operation (March-August), total Misc Flow will be ~12.4 kcfs. Flow through
the B2CC is ~5 kcfs, so fluctuations of +/-5 kcfs at any time of year
indicate the B2CC is open/closed.