Bull Run Hydroelectric Project
The Bull Run Hydroelectric Project was a Portland General Electric (PGE) development in the Sandy River basin in the U.S. state of Oregon. Originally built between 1908 and 1912 near the town of Bull Run, it supplied hydroelectric power for the Portland area for nearly a century, until it was removed in 2007 and 2008. The project used a system of canals, tunnels, wood box flumes and diversion dams to feed a remote storage reservoir and powerhouse. The entire project was removed because of rising environmental costs. Marmot Dam on the Sandy River was demolished in 2007, and the Little Sandy Dam on the Little Sandy River was taken down in 2008.
| Marmot Dam and Little Sandy Dam | |
|---|---|
Map of the components of the Bull Run Hydroelectric Project | |
| Official name | Bull Run Hydroelectric Project |
| Country | United States |
| Location | Oregon |
| Coordinates | 45.42901°N 122.23395°W |
| Purpose | Power generation |
| Status | Decommissioned |
| Construction began | 1908 |
| Opening date | 1912 |
| Demolition date | 2007-2008 |
| Owner(s) | Portland General Electric |
| Reservoir | |
| Creates | Roslyn Lake |
| Total capacity | 928 acre-feet (1,145,000 m3) |
| Installed capacity | 22 MW |
| Annual generation | 110,000 MW·h (400 TJ) |
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