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The Boundary Hydroelectric Project located on the Pend Oreille River in Northeastern Washington supplies over one third of Seattle City Light's power. Last year we celebrated our 40th year of power, people and progress.

Discover the Boundary Hydroelectric Project nestled in the foothills of the Selkirk Mountains and situated along the banks of the scenic Pend Oreille (pronounced "pond-ah-ray") River.

Our 265,000 horsepower turbines and electrical generating facilities produce clean, renewable energy. Tour our Visitors' Gallery located deep inside a massive limestone cavern. Enjoy expansive views at the Vista House and observation deck.

City Light's Boundary Dam in remote Pend Oreille County has much available for the recreation minded visitor. Learn why it's well worth the trip.

See video

Boundary Country

Culture and attractions of Pend Oreille County

Meet the people of Pend Oreille County

Seattle Post-Intelligencer reporter Jeff Larson visited Boundary in August, 2004. Read his reports here:

August 19: Remote corner is worth checking out

August 26: A gem of a cave and a stunning dam await


Free guided group tours are available Memorial Day weekend through Labor Day. Reservations are not required, but groups of 10 or more should call in advance. Contact (509) 446-3083 for information and reservations.

Boundary Project Visitors' Gallery Hours:
Thursday through Monday
10:30 am - 4:30 pm
Boundary Vista House will reopen May 23rd, 2008.


Inside Boundary Dam


For a behind-the-scenes look at how 50 percent of Seattle's power is generated, visit the Boundary Hydroelectric Project, just one mile south of the Canadian border. Boundary Dam, which is nestled in the foothills of the Selkirk Range, arches between two massive rock cliffs. Its gates retain the flow of Washington's second largest river, the Pend Oreille (say Pond-er-ray).

Tour Information

Free guided tours are available from Memorial Day through Labor Day, Thursdays through Mondays from 10:30 a.m. to 4:30 p.m. Reservations are not required, but groups of 10 or more should call in advance. Accommodations for persons with disabilities are available with an advance request. For more information, please call 509.446.3083.

Gear Up for Adventure!

Enjoy the splendor of Pend Oreille County. The area has an array of sights and activities including fishing, camping, backpacking and horseback riding for year-round recreational fun. A picnic area, campsites and a boat launch provide access to the clear, sparkling water of the reservoir. See local sights .

If you're a camper, Boundary is a great site to enjoy the water and mountains. The recreational campground is just upstream of the dam and has eight RV sites and an area for tents. Services include restrooms with running water (no showers) and a boat ramp providing access to Boundary reservoir. There also primitive camp sites located near Z Canyon which are only accessible by water.

There is no charge for the facilities but availability is on a first come basis and reservations are not taken. No rv sanitation dump facilities or boat moorage.

Forging Partnerships with Local Business

Seattle City Light is one of the area's largest employers. The utility won the "National Eyes on Wildlife Award" for teaming up with the Colville National Forest to assist in the development of Flume Creek Mountain Goat Viewing Area. Seattle City Light manages the Boundary Project and six other hydroelectric plants in Washington state, providing the lowest cost, most reliable and greenest electricity in urban America.

Security Note: With heightened security concerns, access may be limited. Photo ID is required for all adults and some areas of the project are restricted.

Click here for more contact information! Customer Service
Call (206) 684-3000






For additional information, please send email to Gary Baird at gary.baird@seattle.gov or call (509) 446-3083.

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The Seattle City Light Web Team:

Seattle City Light -- 700 5th Avenue, Suite 3200, Seattle, WA 98104-5031 -- 206.684.3000
Mailing address: 700 5th Avenue, Suite 3200, P.O. Box 34023 Seattle, WA 98124-4023