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 pio
John Samuel Eastwood
Hume Lake Dam, completed 1909, displaying its reinforced concrete 50-foot (15 m)-span arches resting on inclined vertical buttresses
The San Joaquin River is the longest river of Central California. The 366-mile long river starts in the high Sierra Nevada and flows through the rich agricultural region of the northern San Joaquin Va
John Samuel Eastwood
…Fresno Gas and Electric Company, that led to the demise of the San Joaquin Electric Company in 1899 after a long drought dried up the North Fork of the San Joaquin River. Shortly thereafter, Eastwood became engaged with the Pacific Light and Power Company as engineer in charge of designing a large hydroelectric project…
San Joaquin River near Vernalis
Crossings of California State Route 99 and the Union Pacific Railroad along the northern border of Fresno. The early stages of construction of California High-Speed Rail's San Joaquin River Viaduct is also visible.
The San Joaquin at Mendota Pool during the high flows of April 2006
Headwaters of the Middle Fork San Joaquin River, just downstream of Thousand Island Lake