Bonneville Dam
Friday July 28, 2023
| 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 | 139.60 | 32.30 | 94.90 | 75.80 | 12.50 | 63.30 | 75.70 | 76.20 | 12.60 |
| 2 | 138.90 | 31.80 | 94.70 | 75.70 | 12.50 | 63.20 | 75.60 | 76.20 | 12.60 |
| 3 | 138.80 | 31.70 | 94.70 | 75.80 | 12.60 | 63.20 | 75.70 | 76.10 | 12.60 |
| 4 | 138.90 | 31.80 | 94.70 | 75.70 | 12.70 | 63.00 | 75.60 | 76.10 | 12.80 |
| 5 | 138.90 | 31.80 | 94.70 | 75.60 | 12.70 | 62.90 | 75.50 | 76.10 | 12.80 |
| 6 | 139.40 | 32.40 | 94.60 | 75.50 | 12.70 | 62.80 | 75.40 | 76.00 | 12.80 |
| 7 | 153.10 | 46.30 | 94.40 | 75.30 | 13.30 | 62.00 | 75.20 | 75.90 | 13.50 |
| 8 | 154.50 | 47.80 | 94.30 | 75.40 | 13.40 | 62.00 | 75.20 | 75.90 | 13.50 |
| 9 | 154.60 | 47.90 | 94.30 | 75.30 | 13.40 | 61.90 | 75.10 | 75.90 | 13.50 |
| 10 | 154.50 | 47.90 | 94.20 | 75.20 | 13.30 | 61.90 | 75.00 | 75.70 | 13.40 |
| 11 | 154.20 | 47.80 | 94.00 | 75.00 | 13.30 | 61.70 | 74.90 | 75.60 | 13.30 |
| 12 | 154.30 | 48.00 | 93.90 | 75.00 | 13.30 | 61.70 | 74.80 | 75.50 | 13.30 |
| 13 | 154.10 | 47.80 | 93.90 | 74.90 | 13.10 | 61.80 | 74.80 | 75.50 | 13.20 |
| 14 | 153.70 | 47.50 | 93.80 | 74.80 | 13.10 | 61.70 | 74.70 | 75.40 | 13.20 |
| 15 | 154.10 | 48.00 | 93.70 | 74.70 | 13.00 | 61.70 | 74.60 | 75.30 | 13.10 |
| 16 | 153.70 | 47.80 | 93.50 | 74.60 | 13.00 | 61.60 | 74.50 | 75.20 | 13.20 |
| 17 | 153.70 | 47.90 | 93.40 | 74.50 | 13.00 | 61.50 | 74.40 | 75.10 | 13.10 |
| 18 | 166.90 | 61.30 | 93.20 | 74.40 | 13.80 | 60.60 | 74.30 | 75.10 | 13.90 |
| 19 | 177.40 | 71.80 | 93.20 | 74.50 | 14.30 | 60.20 | 74.40 | 75.20 | 14.40 |
| 20 | 178.40 | 72.60 | 93.40 | 74.70 | 14.30 | 60.40 | 74.50 | 75.40 | 14.50 |
| 21 | 178.00 | 72.00 | 93.60 | 74.80 | 14.40 | 60.40 | 74.70 | 75.50 | 14.50 |
| 22 | 162.60 | 56.30 | 93.90 | 75.20 | 13.60 | 61.60 | 75.00 | 75.60 | 13.60 |
| 23 | 149.90 | 43.30 | 94.20 | 75.50 | 13.10 | 62.40 | 75.30 | 75.80 | 13.10 |
| 24 | 138.40 | 31.50 | 94.50 | 75.50 | 12.40 | 63.10 | 75.40 | 75.90 | 12.50 |
|
| AVG | 153.36 | 46.89 | 94.07 | 75.14 | 13.20 | 61.94 | 75.01 | 75.67 | 13.29 |
|
| MAX | 178.40 | 72.60 | 94.90 | 75.80 | 14.40 | 63.30 | 75.70 | 76.20 | 14.50 |
| MIN | 138.40 | 31.50 | 93.20 | 74.40 | 12.40 | 60.20 | 74.30 | 75.10 | 12.50 |
| |
Powerhouse 1 |
Powerhouse 2 |
Project |
| Hour | Generation Flow kcfs | Forebay Elevation | Forebay Elevation | Generation Flow kcfs | Spillway Gates in Use | Miscellaneous Flow kcfs* |
|---|
| 1 | 0.00 | 75.8 | 75.7 | 32.30 | 18 | 12.4 |
| 2 | 0.00 | 75.7 | 75.6 | 31.80 | 18 | 12.4 |
| 3 | 0.00 | 75.8 | 75.7 | 31.70 | 18 | 12.4 |
| 4 | 0.00 | 75.7 | 75.6 | 31.80 | 18 | 12.4 |
| 5 | 0.00 | 75.6 | 75.5 | 31.80 | 18 | 12.4 |
| 6 | 0.00 | 75.5 | 75.4 | 32.40 | 18 | 12.4 |
| 7 | 0.00 | 75.3 | 75.2 | 46.30 | 18 | 12.4 |
| 8 | 0.00 | 75.4 | 75.2 | 47.80 | 18 | 12.4 |
| 9 | 0.00 | 75.3 | 75.1 | 47.90 | 18 | 12.4 |
| 10 | 0.00 | 75.2 | 75.0 | 47.90 | 18 | 12.4 |
| 11 | 0.00 | 75.0 | 74.9 | 47.80 | 18 | 12.4 |
| 12 | 0.00 | 75.0 | 74.8 | 48.00 | 18 | 12.4 |
| 13 | 0.00 | 74.9 | 74.8 | 47.80 | 18 | 12.4 |
| 14 | 0.00 | 74.8 | 74.7 | 47.50 | 18 | 12.4 |
| 15 | 0.00 | 74.7 | 74.6 | 48.00 | 18 | 12.4 |
| 16 | 0.00 | 74.6 | 74.5 | 47.80 | 18 | 12.4 |
| 17 | 0.00 | 74.5 | 74.4 | 47.90 | 18 | 12.4 |
| 18 | 0.00 | 74.4 | 74.3 | 61.30 | 18 | 12.4 |
| 19 | 0.00 | 74.5 | 74.4 | 71.80 | 18 | 12.4 |
| 20 | 0.00 | 74.7 | 74.5 | 72.60 | 18 | 12.4 |
| 21 | 0.00 | 74.8 | 74.7 | 72.00 | 18 | 12.4 |
| 22 | 0.00 | 75.2 | 75.0 | 56.30 | 18 | 12.4 |
| 23 | 0.00 | 75.5 | 75.3 | 43.30 | 18 | 12.4 |
| 24 | 0.00 | 75.5 | 75.4 | 31.50 | 18 | 12.4 |
|
| AVG | 0.00 | 75.1 | 75.0 | 46.89 | 18 | 12.4 |
|
| MAX | 0.00 | 75.8 | 75.7 | 72.60 | 18 | 12.4 |
| MIN | 0.00 | 74.4 | 74.3 | 31.50 | 18 | 12.4 |
* 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.