The Boundary Dam is a concrete arch-gravity dam across the Pend Oreille River, located in the U.S. state of Washington, in the northeast corner of the state. Completed in 1967 for the conventional generation of hydroelectricity, the dam is operated by Seattle City Light and generates a significant portion of the City of Seattle's energy portfolio. On average, it provides between 46 and 60 percent of the power generated by Seattle City Light.
The dam wall is high and long.
The underground powerhouse, called the Boundary Dam Hydro Power Plant, is completely built inside of the rock that makes up the left abutment of the dam wall. It has a nameplate capacity of just over of generation. The hydroelectric project was listed on the National Register of Historic Places in 2018.
The 1997 film The Postman was partially filmed at the dam. A facade of the town (Bridge City in the film) appeared on the face of the dam for a period of time that year.
Hydroelectric power capacity Generator Nameplatecapacity Brand Commissioned MW hp 51 General Electric October 1967 52 General Electric August 1967 53 General Electric September 1967 54 General Electric August 1967 55 Toshiba November 1985 56 Toshiba May 1986 Total
Climate
See also
List of dams in the Columbia River watershed
Notes
References