Bonneville Dam
Sunday February 9, 2025
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 | 122.50 | 117.10 | 0.00 | 73.10 | 11.30 | 61.80 | 72.90 | 73.70 | 11.50 |
2 | 122.80 | 117.40 | 0.00 | 73.10 | 11.30 | 61.80 | 72.90 | 73.70 | 11.40 |
3 | 124.50 | 119.10 | 0.00 | 73.00 | 11.20 | 61.80 | 72.80 | 73.60 | 11.40 |
4 | 124.60 | 119.20 | 0.00 | 72.80 | 11.30 | 61.50 | 72.70 | 73.50 | 11.50 |
5 | 125.30 | 119.90 | 0.00 | 72.80 | 11.40 | 61.40 | 72.60 | 73.40 | 11.50 |
6 | 126.10 | 120.70 | 0.00 | 72.70 | 11.50 | 61.20 | 72.60 | 73.30 | 11.60 |
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AVG | 124.30 | 118.90 | 0.00 | 72.92 | 11.33 | 61.58 | 72.75 | 73.53 | 11.48 |
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MAX | 126.10 | 120.70 | 0.00 | 73.10 | 11.50 | 61.80 | 72.90 | 73.70 | 11.60 |
MIN | 122.50 | 117.10 | 0.00 | 72.70 | 11.20 | 61.20 | 72.60 | 73.30 | 11.40 |
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Powerhouse 1 |
Powerhouse 2 |
Project |
Hour | Generation Flow kcfs | Forebay Elevation | Forebay Elevation | Generation Flow kcfs | Spillway Gates in Use | Miscellaneous Flow kcfs* |
1 | 40.40 | 73.1 | 72.9 | 76.70 | 0 | 5.4 |
2 | 40.50 | 73.1 | 72.9 | 76.90 | 0 | 5.4 |
3 | 41.10 | 73.0 | 72.8 | 78.00 | 0 | 5.4 |
4 | 41.00 | 72.8 | 72.7 | 78.20 | 0 | 5.4 |
5 | 41.40 | 72.8 | 72.6 | 78.50 | 0 | 5.4 |
6 | 40.60 | 72.7 | 72.6 | 80.10 | 0 | 5.4 |
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AVG | 40.83 | 72.9 | 72.8 | 78.07 | 0 | 5.4 |
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MAX | 41.40 | 73.1 | 72.9 | 80.10 | 0 | 5.4 |
MIN | 40.40 | 72.7 | 72.6 | 76.70 | 0 | 5.4 |
* 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.