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History
John Samuel Eastwood
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John Samuel Eastwood was an American engineer who built the world's first reinforced concrete multiple-arch dam on bedrock foundation at Hume Lake, California, in 1908, and was one of California's pioneers of hydroelectric power production. Eastwood's papers are held at the Water Resources Collections and Archives, University of California, Riverside.
John Samuel Eastwood
John Samuel Eastwood
Mountain Dell Dam
Mountain Dell Dam
Hume Lake Dam, completed 1909, displaying its reinforced concrete 50-foot (15 m)-span arches resting on inclined vertical buttresses
Hume Lake Dam, completed 1909, displaying its reinforced concrete 50-foot (15 m)-span arches resting on inclined vertical buttresses
Lake Hodges Dam, 1918
Lake Hodges Dam, 1918
Hume Lake
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Hume Lake is a reservoir in the Sierra Nevada, within Sequoia National Forest and Fresno County, central California.
Hume Lake
Hume Lake
Dam impounding the waters of Hume Lake, illustrating the unique multiple arch construction designed by John S. Eastwood.
Dam impounding the waters of Hume Lake, illustrating the unique multiple arch construction designed by John S. Eastwood.
1940s conference postcard
1940s conference postcard
Hume Lake showing extensive mountain pine beetle damage as of April 2016.
Hume Lake showing extensive mountain pine beetle damage as of April 2016.