Boundary Dam is a concrete arch gravity-type hydroelectric dam, finished in 1967, on the Pend Oreille River, in the U.S. state of Washington. The dam is located in the northeast corner of Washington state.

Feb 14, 2003 · Unlike the meteorological, geological, and engineering obstacles posed along the Skagit River, the Boundary Dam project ran into legal difficulties. The Pend Oreille County Public Utilities District (PUD) proposed its own smaller dam at Z Canyon, up stream. The construction of one dam would preclude the construction of the other.

City Light implements a wide range of measures focused on the protection, mitigation and enhancement of native fish populations in the Boundary Dam vicinity. These measures have been developed using innovative research and are being implemented in the mainstem Pend Oreille River and over 250 square miles of tributaries draining into Boundary ...

Construction in August 1963 included carving out 500,000 cubic yards of the limestone mountain to make way for, at the time, the world's largest underground powerhouse. The machine hall, which houses the turbine-generators that generate electricity, was excavated to be 15 stories below the ground.

Mar 9, 2018 · For more than 50 years, the Boundary Hydroelectric Project has powered Seattle with its clean hydropower. At 340 feet tall, the concrete double-curvature arch of Boundary Dam cuts an imposing figure on the Pend Oreille River in northeastern Washington.

Boundary Dam is a concrete arch gravity dam located about 23 miles from Northport, Pend Oreille, Washington. The dam, which is on the Pend Oreille River, was primarily built for Hydroelectric purposes, but also serves for Recreation benefits.

Mar 1, 2020 · The Boundary hydroelectric project is located in a narrow canyon in the Selkirk Mountains in the northeast corner of Washington, about 10 miles north of the city of Metaline Falls and one mile south of the U.S.-Canada border.

Black and white and color; no sound. Construction of Seattle City Light's Boundary Dam, 1965-1967. From excavation and dredging to spillway tests. (Part 1...

Dec 6, 2000 · On September 1, 1967, the first commercial electricity from Seattle City Light's new Boundary Dam arrives in Seattle. The thin-arch, concrete dam sits in Box Canyon on the Pend Oreille River in northeastern Washington. Its four generators produce 600,000 kilowatts of current, more than any other powerhouse on the City Light system.

The dam is a 340-foot-high double curvature concrete dam with the underground powerhouse generating over 1,000 megawatts of electricity and, at certain times of the year, providing as much as 60% of Seattle’s power. Schnabel performed the 2015 FERC Part 12D dam safety inspection of …