Bonneville Dam
Sunday January 3, 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 | 143.40 | 138.40 | 0.00 | 75.00 | 14.80 | 60.20 | 75.00 | 75.60 | 14.80 |
| 2 | 131.70 | 126.70 | 0.00 | 75.20 | 14.30 | 60.90 | 75.10 | 75.80 | 14.40 |
| 3 | 123.10 | 118.10 | 0.00 | 75.20 | 13.90 | 61.30 | 75.20 | 75.80 | 13.90 |
| 4 | 121.80 | 116.80 | 0.00 | 75.10 | 13.70 | 61.40 | 75.10 | 75.70 | 13.70 |
| 5 | 122.40 | 117.40 | 0.00 | 75.20 | 13.60 | 61.60 | 75.10 | 75.70 | 13.50 |
| 6 | 122.00 | 117.00 | 0.00 | 75.30 | 13.40 | 61.90 | 75.20 | 75.80 | 13.30 |
| 7 | 121.50 | 116.50 | 0.00 | 75.40 | 13.20 | 62.20 | 75.30 | 75.90 | 13.20 |
| 8 | 116.00 | 109.90 | 1.10 | 75.50 | 13.00 | 62.50 | 75.50 | 76.00 | 12.90 |
| 9 | 115.50 | 109.40 | 1.10 | 75.60 | 12.90 | 62.70 | 75.50 | 76.10 | 12.80 |
| 10 | 118.30 | 112.20 | 1.10 | 75.70 | 13.10 | 62.60 | 75.70 | 76.20 | 13.00 |
| 11 | 118.40 | 112.30 | 1.10 | 75.60 | 13.30 | 62.30 | 75.60 | 76.20 | 13.20 |
| 12 | 122.30 | 116.20 | 1.10 | 75.70 | 13.50 | 62.20 | 75.70 | 76.20 | 13.40 |
| 13 | 123.50 | 117.40 | 1.10 | 75.70 | 13.50 | 62.20 | 75.70 | 76.30 | 13.40 |
| 14 | 133.20 | 127.10 | 1.10 | 75.40 | 14.10 | 61.30 | 75.50 | 76.20 | 13.80 |
| 15 | 142.20 | 136.10 | 1.10 | 75.30 | 14.10 | 61.20 | 75.30 | 76.00 | 14.30 |
| 16 | 145.60 | 139.50 | 1.10 | 75.10 | 14.50 | 60.60 | 75.20 | 76.00 | 14.30 |
| 17 | 149.80 | 143.70 | 1.10 | 75.00 | 14.70 | 60.30 | 75.10 | 75.90 | 14.50 |
| 18 | 149.40 | 143.80 | 0.60 | 74.90 | 14.70 | 60.20 | 75.00 | 75.70 | 14.40 |
| 19 | 149.60 | 144.60 | 0.00 | 75.00 | 14.80 | 60.20 | 74.90 | 75.80 | 14.70 |
| 20 | 156.20 | 151.20 | 0.00 | 75.20 | 14.70 | 60.50 | 75.20 | 75.80 | 14.70 |
| 21 | 138.90 | 133.90 | 0.00 | 75.40 | 14.00 | 61.40 | 75.30 | 75.90 | 14.00 |
| 22 | 124.20 | 119.20 | 0.00 | 75.50 | 13.70 | 61.80 | 75.40 | 75.90 | 13.60 |
| 23 | 112.30 | 107.30 | 0.00 | 75.50 | 13.20 | 62.30 | 75.50 | 76.00 | 13.20 |
| 24 | 108.40 | 103.40 | 0.00 | 75.20 | 13.30 | 61.90 | 75.40 | 75.80 | 13.20 |
|
| AVG | 129.57 | 124.09 | 0.48 | 75.32 | 13.83 | 61.49 | 75.31 | 75.93 | 13.76 |
|
| MAX | 156.20 | 151.20 | 1.10 | 75.70 | 14.80 | 62.70 | 75.70 | 76.30 | 14.80 |
| MIN | 108.40 | 103.40 | 0.00 | 74.90 | 12.90 | 60.20 | 74.90 | 75.60 | 12.80 |
| |
Powerhouse 1 |
Powerhouse 2 |
Project |
| Hour | Generation Flow kcfs | Forebay Elevation | Forebay Elevation | Generation Flow kcfs | Spillway Gates in Use | Miscellaneous Flow kcfs* |
|---|
| 1 | 66.90 | 75.0 | 75.0 | 71.50 | 0 | 5.0 |
| 2 | 55.50 | 75.2 | 75.1 | 71.20 | 0 | 5.0 |
| 3 | 58.40 | 75.2 | 75.2 | 59.70 | 0 | 5.0 |
| 4 | 57.70 | 75.1 | 75.1 | 59.10 | 0 | 5.0 |
| 5 | 58.10 | 75.2 | 75.1 | 59.30 | 0 | 5.0 |
| 6 | 57.90 | 75.3 | 75.2 | 59.10 | 0 | 5.0 |
| 7 | 57.60 | 75.4 | 75.3 | 58.90 | 0 | 5.0 |
| 8 | 62.60 | 75.5 | 75.5 | 47.30 | 1 | 5.0 |
| 9 | 61.60 | 75.6 | 75.5 | 47.80 | 1 | 5.0 |
| 10 | 64.80 | 75.7 | 75.7 | 47.40 | 1 | 5.0 |
| 11 | 64.50 | 75.6 | 75.6 | 47.80 | 1 | 5.0 |
| 12 | 68.50 | 75.7 | 75.7 | 47.70 | 1 | 5.0 |
| 13 | 69.80 | 75.7 | 75.7 | 47.60 | 1 | 5.0 |
| 14 | 79.50 | 75.4 | 75.5 | 47.60 | 1 | 5.0 |
| 15 | 84.30 | 75.3 | 75.3 | 51.80 | 1 | 5.0 |
| 16 | 79.30 | 75.1 | 75.2 | 60.20 | 1 | 5.0 |
| 17 | 82.30 | 75.0 | 75.1 | 61.40 | 1 | 5.0 |
| 18 | 82.30 | 74.9 | 75.0 | 61.50 | 0 | 5.0 |
| 19 | 81.70 | 75.0 | 74.9 | 62.90 | 0 | 5.0 |
| 20 | 79.00 | 75.2 | 75.2 | 72.20 | 0 | 5.0 |
| 21 | 63.60 | 75.4 | 75.3 | 70.30 | 0 | 5.0 |
| 22 | 60.00 | 75.5 | 75.4 | 59.20 | 0 | 5.0 |
| 23 | 59.00 | 75.5 | 75.5 | 48.30 | 0 | 5.0 |
| 24 | 56.50 | 75.2 | 75.4 | 46.90 | 0 | 5.0 |
|
| AVG | 67.14 | 75.3 | 75.3 | 56.95 | 0 | 5.0 |
|
| MAX | 84.30 | 75.7 | 75.7 | 72.20 | 1 | 5.0 |
| MIN | 55.50 | 74.9 | 74.9 | 46.90 | 0 | 5.0 |
* 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.