The Dalles Dam
| The Dalles Dam | |
|---|---|
From the Washington side
|
|
| Official name | The Dalles Lock and Dam |
| Location | Klickitat County, Washington / Wasco County, Oregon, USA |
| Coordinates | 45°36′44″N 121°08′04″W / 45.61222°N 121.13444°WCoordinates: 45°36′44″N 121°08′04″W / 45.61222°N 121.13444°W |
| Construction began | 1952 |
| Opening date | 1957 |
| Operator(s) |
U.S. Army Corps of Engineers (Operator) Bonneville Power Administration (Marketer) |
| Dam and spillways | |
| Type of dam | Concrete gravity, run-of-the-river |
| Height | 200 feet (61 m) |
| Length | 8,835 feet (2,693 m) |
| Width (base) | 239 feet (73 m) (Spillway) |
| Spillway type | Service, gate-controlled |
| Spillway capacity | 2,290,000 cu ft/s (65,000 m3/s) |
| Reservoir | |
| Creates | Lake Celilo |
| Total capacity | 330,000 acre·ft (0.41 km3) |
| Power station | |
| Turbines | 22 |
| Installed capacity | 1,878.3 MW Max.: 2,160 MW |
| Annual generation | 6,180 GWh |
The Dalles Dam is a concrete-gravity run-of-the-river dam spanning the Columbia River, two miles (3 km) east of the city of The Dalles, Oregon, United States. It joins Wasco County, Oregon with Klickitat County, Washington, 192 miles (309 km) upriver from the mouth of the Columbia near Astoria, Oregon. The closest towns on the Washington side are Dallesport and Wishram.
The Army Corps of Engineers began work on the dam in 1952 and completed it five years later. Slackwater created by the dam submerged Celilo Falls, the economic and cultural hub of Native Americans in the region and the oldest continuously inhabited settlement in North America. On March 10, 1957, hundreds of observers looked on as the rising waters rapidly silenced the falls, submerged fishing platforms, and consumed the village of Celilo.
The reservoir behind the dam is named Lake Celilo and runs 24 miles (39 km) up the river channel, to the foot of John Day Dam. The dam is operated by the U.S. Army Corps of Engineers (USACE), and the power is marketed by the Bonneville Power Administration (BPA). It is part of an extensive system of dams on the Columbia and Snake Rivers.
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