Bonneville Lock and Dam and Dalles Hydroelectric Facilities

Tour Date: Monday, July 22, 2019
Tour Time: 8:00am – 5:00pm
Max Number of Attendees: 50
Price: $130

Sponsored by:


Tour Description: This tour features two hydroelectric facilities operated by the U.S. Army Corps of Engineers. At 2,100 MW, The Dalles is one of the ten largest hydropower facilities in the U.S. It was completed in 1957 to provide the Pacific Northwest with a reliable water source for hydropower, navigation, recreation, fish passage, irrigation and flood mitigation.

The project consists of a concrete structure with a navigation lock, spillway, gated powerhouse and fish passage facilities. Since its construction, the facility has generated more than 9.2 billion kWh of electricity and the dam has passed up to 10 million tons of river cargo annually.

The Dalles powerhouse contains 22 turbine-generator units.

The 1,050-MW Bonneville facility is the last dam on the Columbia River before it enters the Pacific Ocean. The first powerhouse, spillway and original navigation lock were completed in 1938 to improve navigation on the river and provide hydropower to the Pacific Northwest. A second powerhouse was completed in 1981 and a larger navigation lock in 1993.

The Bonneville First Powerhouse, which contains 11 turbine-generator units, is undergoing a rehabilitation that includes new turbine guide bearings, replacement main unit circuit breakers and instrument transformers, turbine repair work and much more.

The dam features fish ladders that provide an elevation gain of 60 feet and are used to transport returning adult chinook salmon, coho salmon, sockeye salmon, steelhead trout, American shad and lamprey to their spawning grounds.

Security Requirements: All US citizens must submit a color copy of a government issued id no later than 60 days in advance of the tour. All foreign nationals must submit a color copy of their passport no later than 60 days in advance. US citizens must bring their government id with them on the tour and all foreign nationals must bring their passports on the tour. Please email a copy of the above mentioned id to no later than May 22, 2018.

Safety/Physical Requirements: All attendees must wear long pants and closed toe shoes. Attendees will be provided with all necessary safety equipment upon arrival. No backpacks will be allowed. Attendees will be required to climb stairs.