Bonneville Dam
Wednesday December 29, 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 | 189.00 | 185.50 | 0.00 | 74.20 | 16.80 | 57.40 | 74.40 | 75.40 | 16.50 |
| 2 | 190.50 | 187.00 | 0.00 | 74.10 | 16.90 | 57.20 | 74.30 | 75.30 | 16.50 |
| 3 | 190.10 | 186.60 | 0.00 | 74.00 | 16.90 | 57.10 | 74.20 | 75.20 | 16.50 |
| 4 | 190.80 | 187.30 | 0.00 | 73.90 | 16.90 | 57.00 | 74.10 | 75.10 | 16.50 |
| 5 | 190.50 | 187.00 | 0.00 | 73.90 | 17.00 | 56.90 | 74.10 | 75.10 | 16.50 |
| 6 | 199.20 | 195.70 | 0.00 | 73.80 | 17.30 | 56.50 | 74.00 | 75.10 | 16.80 |
| 7 | 204.50 | 200.30 | 0.70 | 73.60 | 17.50 | 56.10 | 73.70 | 75.00 | 17.00 |
| 8 | 205.60 | 200.90 | 1.20 | 73.70 | 17.60 | 56.10 | 73.90 | 75.00 | 17.00 |
| 9 | 204.20 | 199.50 | 1.20 | 73.70 | 17.50 | 56.20 | 73.90 | 75.00 | 17.00 |
| 10 | 203.20 | 198.50 | 1.20 | 73.70 | 17.60 | 56.10 | 73.90 | 75.00 | 17.00 |
| 11 | 203.10 | 198.40 | 1.20 | 73.70 | 17.50 | 56.20 | 73.90 | 75.00 | 17.00 |
| 12 | 204.60 | 199.90 | 1.20 | 73.60 | 17.60 | 56.00 | 73.80 | 75.00 | 17.00 |
| 13 | 204.90 | 200.20 | 1.20 | 73.60 | 17.70 | 55.90 | 73.80 | 74.90 | 17.10 |
| 14 | 206.30 | 201.60 | 1.20 | 73.10 | 17.80 | 55.30 | 73.70 | 74.80 | 17.30 |
| 15 | 206.20 | 201.50 | 1.20 | 73.20 | 18.20 | 55.00 | 73.50 | 74.70 | 17.60 |
| 16 | 209.80 | 205.10 | 1.20 | 73.10 | 18.10 | 55.00 | 73.30 | 74.60 | 17.60 |
| 17 | 211.10 | 206.40 | 1.20 | 73.00 | 18.10 | 54.90 | 73.30 | 74.50 | 17.70 |
| 18 | 207.90 | 204.00 | 0.40 | 72.90 | 18.20 | 54.70 | 73.20 | 74.50 | 17.70 |
| 19 | 209.10 | 205.20 | 0.40 | 73.00 | 18.00 | 55.00 | 73.30 | 74.40 | 17.60 |
| 20 | 200.20 | 196.70 | 0.00 | 73.20 | 17.90 | 55.30 | 73.40 | 74.50 | 17.40 |
| 21 | 199.20 | 195.70 | 0.00 | 73.20 | 17.80 | 55.40 | 73.40 | 74.50 | 17.40 |
| 22 | 199.80 | 196.30 | 0.00 | 73.20 | 17.80 | 55.40 | 73.40 | 74.50 | 17.30 |
| 23 | 196.90 | 193.40 | 0.00 | 73.20 | 17.60 | 55.60 | 73.40 | 74.50 | 17.20 |
| 24 | 186.50 | 183.00 | 0.00 | 73.60 | 17.10 | 56.50 | 73.70 | 74.60 | 16.70 |
|
| AVG | 200.55 | 196.49 | 0.56 | 73.51 | 17.56 | 55.95 | 73.73 | 74.84 | 17.08 |
|
| MAX | 211.10 | 206.40 | 1.20 | 74.20 | 18.20 | 57.40 | 74.40 | 75.40 | 17.70 |
| MIN | 186.50 | 183.00 | 0.00 | 72.90 | 16.80 | 54.70 | 73.20 | 74.40 | 16.50 |
| |
Powerhouse 1 |
Powerhouse 2 |
Project |
| Hour | Generation Flow kcfs | Forebay Elevation | Forebay Elevation | Generation Flow kcfs | Spillway Gates in Use | Miscellaneous Flow kcfs* |
|---|
| 1 | 96.50 | 74.2 | 74.4 | 89.00 | 0 | 3.5 |
| 2 | 97.50 | 74.1 | 74.3 | 89.50 | 0 | 3.5 |
| 3 | 97.40 | 74.0 | 74.2 | 89.20 | 0 | 3.5 |
| 4 | 97.80 | 73.9 | 74.1 | 89.50 | 0 | 3.5 |
| 5 | 97.90 | 73.9 | 74.1 | 89.10 | 0 | 3.5 |
| 6 | 102.90 | 73.8 | 74.0 | 92.80 | 0 | 3.5 |
| 7 | 105.50 | 73.6 | 73.7 | 94.80 | 1 | 3.5 |
| 8 | 105.60 | 73.7 | 73.9 | 95.30 | 1 | 3.5 |
| 9 | 104.40 | 73.7 | 73.9 | 95.10 | 1 | 3.5 |
| 10 | 103.90 | 73.7 | 73.9 | 94.60 | 1 | 3.5 |
| 11 | 103.90 | 73.7 | 73.9 | 94.50 | 1 | 3.5 |
| 12 | 106.40 | 73.6 | 73.8 | 93.50 | 1 | 3.5 |
| 13 | 106.30 | 73.6 | 73.8 | 93.90 | 1 | 3.5 |
| 14 | 107.20 | 73.1 | 73.7 | 94.40 | 1 | 3.5 |
| 15 | 107.10 | 73.2 | 73.5 | 94.40 | 1 | 3.5 |
| 16 | 109.30 | 73.1 | 73.3 | 95.80 | 1 | 3.5 |
| 17 | 109.90 | 73.0 | 73.3 | 96.50 | 1 | 3.5 |
| 18 | 108.70 | 72.9 | 73.2 | 95.30 | 0 | 3.5 |
| 19 | 109.50 | 73.0 | 73.3 | 95.70 | 0 | 3.5 |
| 20 | 103.50 | 73.2 | 73.4 | 93.20 | 0 | 3.5 |
| 21 | 103.00 | 73.2 | 73.4 | 92.70 | 0 | 3.5 |
| 22 | 103.20 | 73.2 | 73.4 | 93.10 | 0 | 3.5 |
| 23 | 101.40 | 73.2 | 73.4 | 92.00 | 0 | 3.5 |
| 24 | 95.40 | 73.6 | 73.7 | 87.60 | 0 | 3.5 |
|
| AVG | 103.51 | 73.5 | 73.7 | 92.98 | 0 | 3.5 |
|
| MAX | 109.90 | 74.2 | 74.4 | 96.50 | 1 | 3.5 |
| MIN | 95.40 | 72.9 | 73.2 | 87.60 | 0 | 3.5 |
* 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.