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Dams of the Columbia Basin & Their
Effects on the Native Fishery
Bonneville *
The Dalles *
Priest Rapids & Wanapum *
Rock Island, Rocky Reach, Wells & Chief Joseph *
Grand Coulee *
Ice Harbor, Lower Monument, Little Goose & Lower Granite *
Hells Canyon, Oxbow, Brownlee & Dworshak *
Revelstoke, Keenleyside, Mica & Duncan
John Day fish ladder. Courtesy of Army Corps of Engineers
John Day Dam:
Columbia River, at mile marker 215.6,completed 1968, federally owned, concrete gravity type, hydroelectric, fish ladder. The dam was
opened before the fish ladder was completed. As a result the Oregon Fish Commission estimated
that 30,000 sockeye salmon died.
Later estimates put the total fish kill at over 200,000.
McNary Dam. Courtesy of Army Corps of Engineers
McNary Dam:
Columbia River, at mile marker 292.0, completed in 1953, federally owned, concrete gravity type, hydroelectric, 2 fish ladders, 1310 foot spillway,
22 gates,7365 feet long, 183 feet high, 1 lock. McNary Dam creates Lake Wallula which extends 64 miles upstream to Hanford. Named
after Oregon Senator Charles L. McNary. In 1948, the Nez Perce and Umatilla filed an
injunction against the cofferdam because they feared it would damage salmon runs. The
district court denied the request.
There is power for us all and if we absorb it all, Congress will go up the river and build more river dams for you.
-- Senator Charles McNary
 Additional information about
John Day Dam
Additional information about
McNary Dam
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