Alder Dam Powerhouse 1912

La Grande Powerhouse
La Grande Powerhouse

Drive up to La Grande and you can’t miss the Alder Dam, built in the 1940s. But there was another dam before this one — smaller and built in the 1910.

“The water was forced through a pipe bridge that carried the water across the valley and then down four large pipes (5 feet wide) to a powerhouse 410 feet blow.

Inside the powerhouse the four sets of Allis-Chalmers turbines and generators each produced 8,000 horsepower.”  (Per Upper Nisqually Valley)

Photos courtesy Rich Williams

Click on photo to Enlarge.

Tram to La Grande Powerhouse
Tram to La Grande Powerhouse

 

 


 

 

 

 

 

 

 

 

 

Transformers inside La Grande Powerhouse

Transformers inside La Grande Powerhouse

 

 

7 thoughts on “Alder Dam Powerhouse 1912”

  1. Pingback: Eatonville to Rainier » Alder Dam Pipes – 1915

  2. Pingback: Eatonville to Rainier » La Grande Dam (ca. 1915)

  3. Diane Purdy Arnold

    We moved to Alder in 1952… my Dad was able to get on with the City of TAcoma’s Nisqually project…. his first job was the run the tram. I could get away with saying he was a dam tram man…. closest to swearing allowed in our house.. was able to ride it several times. It was scary and awesome at the same time.

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