Ice Harbor Dam
Ice Harbor Lock and Dam is a hydroelectric, concrete gravity run-of-the-river dam in the northwest United States. On the lower Snake River in southeastern Washington, it bridges Walla Walla and Franklin counties. Located eight miles (13 km) northeast of Burbank and twelve miles (19 km) east of Pasco, river mile 9.7, the dam's name comes from a tiny bay in the river where boats once tied up to wait for upstream ice-jams to break up.
| Ice Harbor Dam | |
|---|---|
Aerial view from northwest | |
Location in the United States Location in Washington | |
| Country | United States |
| Location | Franklin and Walla Walla counties, Washington |
| Coordinates | 46.25°N 118.88°W |
| Construction began | June 1955 |
| Opening date | 1962 |
| Owner(s) | U.S. Army Corps of Engineers |
| Dam and spillways | |
| Type of dam | Concrete gravity |
| Impounds | Snake River |
| Height | 100 feet (30 m) |
| Length | 2,822 feet (860 m) |
| Spillway type | Service, gate-controlled |
| Reservoir | |
| Creates | Lake Sacajawea |
| Total capacity | 249,000 acre⋅ft (0.307 km3) |
| Surface area | 8,375 acres (33.89 km2) |
| Normal elevation | 443 feet (135 m) AMSL |
| Power Station | |
| Type | Run-of-the-river |
| Turbines | 3 x 90 MW units; 3 x 111 MW units |
| Installed capacity | 603 MW 693 MW (max) |
Construction began in June 1955; the main structure and three generators were completed 63 years ago in 1961, with an additional three generators finished in 1976. Generating capacity is 603 megawatts, with an overload capacity of 693 MW. The spillway has ten gates and is 590 feet (180 m) in length.
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